Adam Guerin [Fri, 9 Jun 2023 16:38:22 +0000 (17:38 +0100)]
crypto: qat - extend configuration for 4xxx
A QAT GEN4 device can be currently configured for crypto (sym;asym) or
compression (dc).
This patch extends the configuration to support more variations of these
services, download the correct FW images on the device and report the
correct capabilities on the device based on the configured service.
The device can now be configured with the following services:
"sym", "asym", "dc", "sym;asym", "asym;sym", "sym;dc", "dc;sym",
"asym;dc", "dc;asym".
With this change, the configuration "sym", "asym", "sym;dc", "dc;sym",
"asym;dc", "dc;asym" will be accessible only via userspace, i.e. the driver
for those configurations will not register into the crypto framework.
Support for such configurations in kernel will be enabled in a later
patch.
The pairs "sym;asym" and "asym;sym" result in identical device config.
As do "sym;dc", "dc;sym", and "asym;dc", "dc;asym".
Signed-off-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Giovanni Cabiddu [Fri, 9 Jun 2023 16:38:21 +0000 (17:38 +0100)]
crypto: qat - refactor fw config logic for 4xxx
The data structure adf_fw_config is used to select which firmware image
is loaded on a certain set of accelerator engines.
When support for 402xx was added, the adf_fw_config arrays were
duplicated in order to select different firmware images.
Since the configurations are the same regardless of the QAT GEN4
flavour, in preparation for adding support for multiple configurations,
refactor the logic that retrieves the firmware names in the 4xxx driver.
The structure adf_fw_config has been changed to contain a firmware object
id that is then mapped to a firmware name depending of the device type.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Giovanni Cabiddu [Fri, 9 Jun 2023 16:38:20 +0000 (17:38 +0100)]
crypto: qat - make fw images name constant
Update fw image names to be constant throughout the driver.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Adam Guerin [Fri, 9 Jun 2023 16:38:19 +0000 (17:38 +0100)]
crypto: qat - move returns to default case
Make use of the default statements by changing the pattern:
switch(condition) {
case COND_A:
...
break;
case COND_b:
...
break;
}
return ret;
in
switch(condition) {
case COND_A:
...
break;
case COND_b:
...
break;
default:
return ret;
}
Signed-off-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Franziska Naepelt [Tue, 6 Jun 2023 11:17:49 +0000 (13:17 +0200)]
crypto: hmac - Add missing blank line
The following checkpatch warning has been fixed:
- WARNING: Missing a blank line after declarations
Signed-off-by: Franziska Naepelt <franziska.naepelt@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hareshx Sankar Raj [Mon, 5 Jun 2023 21:06:07 +0000 (22:06 +0100)]
crypto: qat - unmap buffers before free for RSA
The callback function for RSA frees the memory allocated for the source
and destination buffers before unmapping them.
This sequence is wrong.
Change the cleanup sequence to unmap the buffers before freeing them.
Fixes:
3dfaf0071ed7 ("crypto: qat - remove dma_free_coherent() for RSA")
Signed-off-by: Hareshx Sankar Raj <hareshx.sankar.raj@intel.com>
Co-developed-by: Bolemx Sivanagaleela <bolemx.sivanagaleela@intel.com>
Signed-off-by: Bolemx Sivanagaleela <bolemx.sivanagaleela@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hareshx Sankar Raj [Mon, 5 Jun 2023 21:06:06 +0000 (22:06 +0100)]
crypto: qat - unmap buffer before free for DH
The callback function for DH frees the memory allocated for the
destination buffer before unmapping it.
This sequence is wrong.
Change the cleanup sequence to unmap the buffer before freeing it.
Fixes:
029aa4624a7f ("crypto: qat - remove dma_free_coherent() for DH")
Signed-off-by: Hareshx Sankar Raj <hareshx.sankar.raj@intel.com>
Co-developed-by: Bolemx Sivanagaleela <bolemx.sivanagaleela@intel.com>
Signed-off-by: Bolemx Sivanagaleela <bolemx.sivanagaleela@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 1 Jun 2023 08:47:43 +0000 (16:47 +0800)]
dm crypt: Avoid using MAX_CIPHER_BLOCKSIZE
MAX_CIPHER_BLOCKSIZE is an internal implementation detail and should
not be relied on by users of the Crypto API.
Instead of storing the IV on the stack, allocate it together with
the crypto request.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Karthikeyan Gopal [Tue, 30 May 2023 16:01:47 +0000 (17:01 +0100)]
crypto: qat - update slice mask for 4xxx devices
Update slice mask enum for 4xxx device with BIT(7) to mask SMX fuse.
This change is done to align the slice mask with the hardware fuse
register.
Signed-off-by: Karthikeyan Gopal <karthikeyan.gopal@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Karthikeyan Gopal [Tue, 30 May 2023 15:58:11 +0000 (16:58 +0100)]
crypto: qat - set deprecated capabilities as reserved
The LZS and RAND features are no longer available on QAT.
Remove the definition of bit 6 (LZS) and bit 7 (RAND) in the enum that
represents the capabilities and replace them with a comment mentioning
that those bits are reserved.
Those bits shall not be used in future.
Signed-off-by: Karthikeyan Gopal <karthikeyan.gopal@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Giovanni Cabiddu [Sat, 3 Jun 2023 08:28:53 +0000 (09:28 +0100)]
crypto: qat - add missing function declaration in adf_dbgfs.h
The function adf_dbgfs_exit() was improperly named causing the build to
fail when CONFIG_DEBUG_FS=n.
Rename adf_dbgfs_cleanup() as adf_dbgfs_exit().
This fixes the following build error:
CC [M] drivers/crypto/intel/qat/qat_c62x/adf_drv.o
drivers/crypto/intel/qat/qat_c62x/adf_drv.c: In function ‘adf_cleanup_accel’:
drivers/crypto/intel/qat/qat_c62x/adf_drv.c:69:9: error: implicit declaration of function ‘adf_dbgfs_exit’; did you mean ‘adf_dbgfs_init’? [-Werror=implicit-function-declaration]
69 | adf_dbgfs_exit(accel_dev);
| ^~~~~~~~~~~~~~
| adf_dbgfs_init
cc1: all warnings being treated as errors
make[2]: *** [scripts/Makefile.build:252: drivers/crypto/intel/qat/qat_c62x/adf_drv.o] Error 1
make[1]: *** [scripts/Makefile.build:494: drivers/crypto/intel/qat/qat_c62x] Error 2
make: *** [Makefile:2026: drivers/crypto/intel/qat] Error 2
Fixes:
9260db6640a6 ("crypto: qat - move dbgfs init to separate file")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/
202306030654.5t4qkyN1-lkp@intel.com/
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Bhupesh Sharma [Fri, 26 May 2023 19:22:05 +0000 (00:52 +0530)]
dt-bindings: qcom-qce: Add compatibles for SM6115 and QCM2290
The core clock for the Crypto Engine block on Qualcomm SoCs SM6115 and
QCM2290 are provided via the RPM block.
So mark the compatibles for these SoCs to indicate that only 'core'
clock is required for such SoCs.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Bhupesh Sharma [Fri, 26 May 2023 19:22:04 +0000 (00:52 +0530)]
dt-bindings: qcom-qce: Fix compatible combinations for SM8150 and IPQ4019 SoCs
Currently the compatible list available in 'qce' dt-bindings does not
support SM8150 and IPQ4019 SoCs directly which may lead to potential
'dtbs_check' error(s).
Fix the same.
Fixes:
00f3bc2db351 ("dt-bindings: qcom-qce: Add new SoC compatible strings for Qualcomm QCE IP")
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Damian Muszynski [Fri, 26 May 2023 16:48:59 +0000 (17:48 +0100)]
crypto: qat - move dbgfs init to separate file
Move initialization of debugfs entries to a separate file.
This simplifies the exclusion of the debugfs logic in the QAT driver
when the kernel is built with CONFIG_DEBUG_FS=n.
In addition, it will allow to consolidate the addition of debugfs
entries to a single location in the code.
This implementation adds infrastructure to create (and remove) debugfs
entries at two different stages. The first, done when a device is probed,
allows to keep debugfs entries persistent between a transition in device
state (up to down or vice versa). The second, done after the initialization
phase, allows to have debugfs entries that are accessible only when
the device is up.
In addition, move the creation of debugfs entries for configuration
to the newly created function adf_dbgfs_init() and replace symbolic
permissions with octal permissions when creating the debugfs files.
This is to resolve the following warning reported by checkpatch:
WARNING: Symbolic permissions 'S_IRUSR' are not preferred. Consider using octal permissions '0400'.
Signed-off-by: Damian Muszynski <damian.muszynski@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Uwe Kleine-König [Thu, 25 May 2023 21:03:47 +0000 (23:03 +0200)]
crypto: atmel - Switch i2c drivers back to use .probe()
After commit
b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter")
convert back to (the new) .probe() to be able to eventually drop
.probe_new() from struct i2c_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Stephan Müller [Thu, 25 May 2023 17:00:05 +0000 (19:00 +0200)]
crypto: jitter - correct health test during initialization
With the update of the permanent and intermittent health errors, the
actual indicator for the health test indicates a potential error only
for the one offending time stamp gathered in the current iteration
round. The next iteration round will "overwrite" the health test result.
Thus, the entropy collection loop in jent_gen_entropy checks for
the health test failure upon each loop iteration. However, the
initialization operation checked for the APT health test once for
an APT window which implies it would not catch most errors.
Thus, the check for all health errors is now invoked unconditionally
during each loop iteration for the startup test.
With the change, the error JENT_ERCT becomes unused as all health
errors are only reported with the JENT_HEALTH return code. This
allows the removal of the error indicator.
Fixes:
3fde2fe99aa6 ("crypto: jitter - permanent and intermittent health errors"
)
Reported-by: Joachim Vandersmissen <git@jvdsn.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Bharat Bhushan [Thu, 25 May 2023 03:42:00 +0000 (09:12 +0530)]
hwrng: cn10k - Add extended trng register support
The way random data is read from hardware has changed from
Octeon CN10KA-B0 and later SoCs onwards. A new set of registers
have been added to read random data and to verify whether the
read data is valid or not. This patch extends and uses
RNM_PF_TRNG_DAT and RNM_PF_TRNG_STS CSRs to read random number
and status for the applicable silicon variants.
Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Arnd Bergmann [Tue, 23 May 2023 08:33:04 +0000 (10:33 +0200)]
crypto: marvell/cesa - Fix type mismatch warning
Commit
df8fc4e934c1 ("kbuild: Enable -fstrict-flex-arrays=3") uncovered
a type mismatch in cesa 3des support that leads to a memcpy beyond the
end of a structure:
In function 'fortify_memcpy_chk',
inlined from 'mv_cesa_des3_ede_setkey' at drivers/crypto/marvell/cesa/cipher.c:307:2:
include/linux/fortify-string.h:583:25: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror=attribute-warning]
583 | __write_overflow_field(p_size_field, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is probably harmless as the actual data that is copied has the correct
type, but clearly worth fixing nonetheless.
Fixes:
4ada48397823 ("crypto: marvell/cesa - add Triple-DES support")
Cc: Kees Cook <keescook@chromium.org>
Cc: Gustavo A. R. Silva" <gustavoars@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
John Allen [Fri, 19 May 2023 03:24:14 +0000 (22:24 -0500)]
crypto: ccp - Add support for PCI device 0x156E
Add a new CCP/PSP PCI device ID and new PSP register offsets.
Signed-off-by: John Allen <john.allen@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Mario Limonciello [Fri, 19 May 2023 03:24:13 +0000 (22:24 -0500)]
crypto: ccp - Add support for PCI device 0x17E0
PCI device 0x17E0 includes new TEE offsets, doesn't support a
platform mailbox, and does support platform doorbell
so introduce a new structure to represent it.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Mario Limonciello [Fri, 19 May 2023 03:24:12 +0000 (22:24 -0500)]
crypto: ccp - Validate that platform access mailbox registers are declared
Some platforms might support platform access doorbell but not mailbox.
Add an extra guard to ensure this doesn't cause accesses to wrong ranges
if a consumer calls psp_send_platform_access_msg().
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sat, 20 May 2023 17:31:05 +0000 (10:31 -0700)]
crypto: Kconfig - warn about performance overhead of CRYPTO_STATS
Make the help text for CRYPTO_STATS explicitly mention that it reduces
the performance of the crypto API.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Randy Dunlap [Fri, 19 May 2023 22:33:34 +0000 (15:33 -0700)]
crypto: nx - fix build warnings when DEBUG_FS is not enabled
Fix build warnings when DEBUG_FS is not enabled by using an empty
do-while loop instead of a value:
In file included from ../drivers/crypto/nx/nx.c:27:
../drivers/crypto/nx/nx.c: In function 'nx_register_algs':
../drivers/crypto/nx/nx.h:173:33: warning: statement with no effect [-Wunused-value]
173 | #define NX_DEBUGFS_INIT(drv) (0)
../drivers/crypto/nx/nx.c:573:9: note: in expansion of macro 'NX_DEBUGFS_INIT'
573 | NX_DEBUGFS_INIT(&nx_driver);
../drivers/crypto/nx/nx.c: In function 'nx_remove':
../drivers/crypto/nx/nx.h:174:33: warning: statement with no effect [-Wunused-value]
174 | #define NX_DEBUGFS_FINI(drv) (0)
../drivers/crypto/nx/nx.c:793:17: note: in expansion of macro 'NX_DEBUGFS_FINI'
793 | NX_DEBUGFS_FINI(&nx_driver);
Also, there is no need to build nx_debugfs.o when DEBUG_FS is not
enabled, so change the Makefile to accommodate that.
Fixes:
ae0222b7289d ("powerpc/crypto: nx driver code supporting nx encryption")
Fixes:
aef7b31c8833 ("powerpc/crypto: Build files for the nx device driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Breno Leitão <leitao@debian.org>
Cc: Nayna Jain <nayna@linux.ibm.com>
Cc: Paulo Flabiano Smorigo <pfsmorigo@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Martin Kaiser [Fri, 19 May 2023 16:11:19 +0000 (18:11 +0200)]
hwrng: imx-rngc - don't init of_device_id's data
We have no device-specific data for fsl,imx25-rngb. There's no need to
set .data = NULL, this is the default.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Martin Kaiser [Fri, 19 May 2023 16:11:18 +0000 (18:11 +0200)]
hwrng: imx-rngc - mark the probe function as __init
Mark the imx_rngc_probe function as __init.
There's no need to support hotplugging in the imx-rngc driver. We use
module_platform_driver_probe, the probe function will only be called at
startup.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Martin Kaiser [Fri, 19 May 2023 16:04:33 +0000 (18:04 +0200)]
hwrng: imx-rngc - use BIT(x) for register bit defines
Rewrite the defines for register bits to use BIT(x) instead of writing
out the 32-bit number. This makes it easier to compare the code with the
register descriptions in the reference manual.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Martin Kaiser [Fri, 19 May 2023 16:04:32 +0000 (18:04 +0200)]
hwrng: imx-rngc - use bitfield macros to read rng type
Use the mechanism from bitfield.h to read the rng type field in the
version_id register. This makes the code a tiny bit simpler.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Martin Kaiser [Fri, 19 May 2023 16:04:31 +0000 (18:04 +0200)]
hwrng: imx-rngc - simpler check for available random bytes
The "level" field in the status register contains the number of random
bytes that are available in the FIFO. Use GENMASK to extract this field.
We only want to check if level is 0 or if we can read another byte.
There's no need for the shift or the level variable.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 19 May 2023 09:04:04 +0000 (17:04 +0800)]
crypto: shash - Allow cloning on algorithms with no init_tfm
Some shash algorithms are so simple that they don't have an init_tfm
function. These can be cloned trivially. Check this before failing
in crypto_clone_shash.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 19 May 2023 08:28:37 +0000 (16:28 +0800)]
crypto: cmac - Add support for cloning
Allow cmac to be cloned. The underlying cipher needs to support
cloning by not having a cra_init function (all implementations of
aes that do not require a fallback can be cloned).
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 19 May 2023 08:28:35 +0000 (16:28 +0800)]
crypto: cipher - Add crypto_clone_cipher
Allow simple ciphers to be cloned, if they don't have a cra_init
function. This basically rules out those ciphers that require a
fallback.
In future simple ciphers will be eliminated, and replaced with a
linear skcipher interface. When that happens this restriction will
disappear.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 19 May 2023 08:28:32 +0000 (16:28 +0800)]
crypto: cmac - Use modern init_tfm/exit_tfm
Use the modern init_tfm/exit_tfm interface instead of the obsolete
cra_init/cra_exit interface.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Arnd Bergmann [Tue, 16 May 2023 20:28:48 +0000 (22:28 +0200)]
crypto: aegis128-neon - add header for internal prototypes
gcc warns if prototypes are only visible to the caller but
not the callee:
crypto/aegis128-neon-inner.c:134:6: warning: no previous prototype for 'crypto_aegis128_init_neon' [-Wmissing-prototypes]
crypto/aegis128-neon-inner.c:164:6: warning: no previous prototype for 'crypto_aegis128_update_neon' [-Wmissing-prototypes]
crypto/aegis128-neon-inner.c:221:6: warning: no previous prototype for 'crypto_aegis128_encrypt_chunk_neon' [-Wmissing-prototypes]
crypto/aegis128-neon-inner.c:270:6: warning: no previous prototype for 'crypto_aegis128_decrypt_chunk_neon' [-Wmissing-prototypes]
crypto/aegis128-neon-inner.c:316:5: warning: no previous prototype for 'crypto_aegis128_final_neon' [-Wmissing-prototypes]
The prototypes cannot be in the regular aegis.h, as the inner neon code
cannot include normal kernel headers. Instead add a new header just for
the functions provided by this file.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Tue, 23 May 2023 02:33:38 +0000 (10:33 +0800)]
crypto: starfive - Depend on AMBA_PL08X instead of selecting it
A platform option like AMBA should never be selected by a driver.
Use a dependency instead.
Also remove the depenency on DMADEVICES because the driver builds
just fine without it. Instead add a dependency on HAS_DMA for dma
mapping support.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jia Jie Ho [Fri, 19 May 2023 13:42:33 +0000 (21:42 +0800)]
crypto: starfive - Fix driver dependencies
Kconfig updated to depend on DMADEVICES instead of selecting it.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202305191929.Eq4OVZ6D-lkp@intel.com/
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 19 May 2023 12:41:55 +0000 (20:41 +0800)]
crypto: arm64/sha256-glue - Include module.h
Include module.h in arch/arm64/crypto/sha256-glue.c as it uses
various macros (such as MODULE_AUTHOR) that are defined there.
Also fix the ordering of types.h.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/
202305191953.PIB1w80W-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jia Jie Ho [Mon, 15 May 2023 12:53:55 +0000 (20:53 +0800)]
crypto: starfive - Add hash and HMAC support
Adding hash/HMAC support for SHA-2 and SM3 to StarFive cryptographic
module.
Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jia Jie Ho [Mon, 15 May 2023 12:53:53 +0000 (20:53 +0800)]
crypto: starfive - Add crypto engine support
Adding device probe and DMA init for StarFive cryptographic module.
Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jia Jie Ho [Mon, 15 May 2023 12:53:52 +0000 (20:53 +0800)]
dt-bindings: crypto: Add StarFive crypto module
Add documentation to describe StarFive cryptographic engine.
Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Pankaj Gupta [Fri, 12 May 2023 15:10:33 +0000 (20:40 +0530)]
crypto: caam - Fix soc_id matching
Since, CAAM driver is probed before soc_device_attribute done as part of:
- drivers/soc/imx/soc-imx8m.c (for i.MX8M)
- drivers/firmware/imx/ele_mu.c (EdgeLock Enclave kernel driver, for i.MX8ULP)
It is needed to return -EPROBE_DEFER, after calling soc_device_match() in
drivers/crypto/caam/ctrl.c.
soc_device_match returns NULL for:
- i.MX8M
- i.MX8ULP,
can be considered that the SoC device has not been probed yet.
Hence, it returns -EPROBE_DEFER directly.
caam: imx: change to use of_match_node in run_descriptor_deco0
Providing imx8m_machine_match to match:
- i.MX8M{Q,M,N,P},
- i.MX8ULP,
so as to start using of_match_node, to simplify the code.
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Horia Geanta <horia.geanta@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Alice Guo <alice.guo@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tero Kristo [Fri, 12 May 2023 10:40:44 +0000 (16:10 +0530)]
crypto: sa2ul - change unsafe data size limit to 255 bytes
256 bytes is quite often used in performance benchmarks and this size
appears to be also working just fine, so mark it as safe so that we do
not fallback to software implementation for this packet size. Otherwise
there is a strange bump up in crypto performance at 256 byte packet size.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 11 May 2023 04:30:29 +0000 (12:30 +0800)]
crypto: lib/sha256 - Use generic code from sha256_base
Instead of duplicating the sha256 block processing code, reuse
the common code from crypto/sha256_base.h.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 11 May 2023 04:29:36 +0000 (12:29 +0800)]
crypto: lib/sha256 - Remove redundant and unused sha224_update
The function sha224_update is exactly the same as sha256_update.
Moreover it's not even used in the kernel so it can be removed.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 4 May 2023 03:59:32 +0000 (11:59 +0800)]
hwrng: virtio - Fix race on data_avail and actual data
The virtio rng device kicks off a new entropy request whenever the
data available reaches zero. When a new request occurs at the end
of a read operation, that is, when the result of that request is
only needed by the next reader, then there is a race between the
writing of the new data and the next reader.
This is because there is no synchronisation whatsoever between the
writer and the reader.
Fix this by writing data_avail with smp_store_release and reading
it with smp_load_acquire when we first enter read. The subsequent
reads are safe because they're either protected by the first load
acquire, or by the completion mechanism.
Also remove the redundant zeroing of data_idx in random_recv_done
(data_idx must already be zero at this point) and data_avail in
request_entropy (ditto).
Reported-by: syzbot+726dc8c62c3536431ceb@syzkaller.appspotmail.com
Fixes:
f7f510ec1957 ("virtio: An entropy device, as suggested by hpa.")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Srujana Challa [Tue, 25 Apr 2023 14:06:20 +0000 (19:36 +0530)]
crypto: octeontx2 - hardware configuration for inline IPsec
On OcteonTX2/OctoenTX3 variants of silicon, Admin function (AF)
handles resource allocation and configuration for PFs and their VFs.
PFs request the AF directly, via mailboxes.
Unlike PFs, VFs cannot send a mailbox request directly. A VF sends
mailbox messages to its parent PF, with which it shares a
mailbox region. The PF then forwards these messages to the AF.
This patch adds code to configure inline-IPsec HW resources for
CPT VFs as CPT VFs cannot send a mailbox request directly to AF.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Srujana Challa [Tue, 25 Apr 2023 14:06:19 +0000 (19:36 +0530)]
crypto: octeontx2 - add support for AF to CPT PF uplink mbox
This patch adds support for AF -> CPT PF uplink mailbox messages
and adds a mailbox handler to submit a CPT instruction from AF as
current architecture doesn't allow AF to submit CPT instruction
directly to HW.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
David Yang [Mon, 24 Apr 2023 17:20:21 +0000 (01:20 +0800)]
crypto: engine - Fix struct crypto_engine_op doc
Remove redundant underscore and fix some grammar in prepare_request doc.
Signed-off-by: David Yang <mmyangfl@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
David Yang [Fri, 21 Apr 2023 16:56:49 +0000 (00:56 +0800)]
hwrng: histb - Move driver to drivers/char/hw_random/histb-rng.c
Move to drivers/char/hw_random since histb-(t)rng does not provide
cryptography pseudo rng.
histb-rng is pretty like hisi-rng, but after investigation, we confirm
there is no RNG_PHY_SEED register on histb-rng so a separate driver is
needed.
Still we rename relevant function names to match those in hisi-rng.
Link: https://lore.kernel.org/r/20230401164448.1393336-1-mmyangfl@gmail.com
Signed-off-by: David Yang <mmyangfl@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Stephan Müller [Fri, 21 Apr 2023 06:08:23 +0000 (08:08 +0200)]
crypto: jitter - add interface for gathering of raw entropy
The test interface allows a privileged process to capture the raw
unconditioned noise that is collected by the Jitter RNG for statistical
analysis. Such testing allows the analysis how much entropy
the Jitter RNG noise source provides on a given platform. The obtained
data is the time stamp sampled by the Jitter RNG. Considering that
the Jitter RNG inserts the delta of this time stamp compared to the
immediately preceding time stamp, the obtained data needs to be
post-processed accordingly to obtain the data the Jitter RNG inserts
into its entropy pool.
The raw entropy collection is provided to obtain the raw unmodified
time stamps that are about to be added to the Jitter RNG entropy pool
and are credited with entropy. Thus, this patch adds an interface
which renders the Jitter RNG insecure. This patch is NOT INTENDED
FOR PRODUCTION SYSTEMS, but solely for development/test systems to
verify the available entropy rate.
Access to the data is given through the jent_raw_hires debugfs file.
The data buffer should be multiples of sizeof(u32) to fill the entire
buffer. Using the option jitterentropy_testing.boot_raw_hires_test=1
the raw noise of the first 1000 entropy events since boot can be
sampled.
This test interface allows generating the data required for
analysis whether the Jitter RNG is in compliance with SP800-90B
sections 3.1.3 and 3.1.4.
If the test interface is not compiled, its code is a noop which has no
impact on the performance.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Stephan Müller [Fri, 21 Apr 2023 06:08:04 +0000 (08:08 +0200)]
crypto: jitter - replace LFSR with SHA3-256
Using the kernel crypto API, the SHA3-256 algorithm is used as
conditioning element to replace the LFSR in the Jitter RNG. All other
parts of the Jitter RNG are unchanged.
The application and use of the SHA-3 conditioning operation is identical
to the user space Jitter RNG 3.4.0 by applying the following concept:
- the Jitter RNG initializes a SHA-3 state which acts as the "entropy
pool" when the Jitter RNG is allocated.
- When a new time delta is obtained, it is inserted into the "entropy
pool" with a SHA-3 update operation. Note, this operation in most of
the cases is a simple memcpy() onto the SHA-3 stack.
- To cause a true SHA-3 operation for each time delta operation, a
second SHA-3 operation is performed hashing Jitter RNG status
information. The final message digest is also inserted into the
"entropy pool" with a SHA-3 update operation. Yet, this data is not
considered to provide any entropy, but it shall stir the entropy pool.
- To generate a random number, a SHA-3 final operation is performed to
calculate a message digest followed by an immediate SHA-3 init to
re-initialize the "entropy pool". The obtained message digest is one
block of the Jitter RNG that is returned to the caller.
Mathematically speaking, the random number generated by the Jitter RNG
is:
aux_t = SHA-3(Jitter RNG state data)
Jitter RNG block = SHA-3(time_i || aux_i || time_(i-1) || aux_(i-1) ||
... || time_(i-255) || aux_(i-255))
when assuming that the OSR = 1, i.e. the default value.
This operation implies that the Jitter RNG has an output-blocksize of
256 bits instead of the 64 bits of the LFSR-based Jitter RNG that is
replaced with this patch.
The patch also replaces the varying number of invocations of the
conditioning function with one fixed number of invocations. The use
of the conditioning function consistent with the userspace Jitter RNG
library version 3.4.0.
The code is tested with a system that exhibited the least amount of
entropy generated by the Jitter RNG: the SiFive Unmatched RISC-V
system. The measured entropy rate is well above the heuristically
implied entropy value of 1 bit of entropy per time delta. On all other
tested systems, the measured entropy rate is even higher by orders
of magnitude. The measurement was performed using updated tooling
provided with the user space Jitter RNG library test framework.
The performance of the Jitter RNG with this patch is about en par
with the performance of the Jitter RNG without the patch.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 20 Apr 2023 10:05:41 +0000 (18:05 +0800)]
crypto: hash - Make crypto_ahash_alg helper available
Move the crypto_ahash_alg helper into include/crypto/internal so
that drivers can use it.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 20 Apr 2023 10:05:16 +0000 (18:05 +0800)]
crypto: hash - Add statesize to crypto_ahash
As ahash drivers may need to use fallbacks, their state size
is thus variable. Deal with this by making it an attribute
of crypto_ahash.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Dan Carpenter [Wed, 19 Apr 2023 14:26:04 +0000 (17:26 +0300)]
crypto: ixp4xx - silence uninitialized variable warning
Smatch complains that "dma" is uninitialized if dma_pool_alloc() fails.
This is true, but also harmless. Anyway, move the assignment after the
error checking to silence this warning.
Fixes:
586d492f2856 ("crypto: ixp4xx - fix building wiht 64-bit dma_addr_t")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 19 Apr 2023 09:34:30 +0000 (17:34 +0800)]
crypto: arm/sha512-neon - Fix clang function cast warnings
Instead of casting the function which upsets clang for some reason,
change the assembly function siganture instead.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202304081828.zjGcFUyE-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 19 Apr 2023 09:31:49 +0000 (17:31 +0800)]
crypto: arm/sha256-neon - Fix clang function cast warnings
Instead of casting the function which upsets clang for some reason,
change the assembly function siganture instead.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202304081828.zjGcFUyE-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 19 Apr 2023 09:27:40 +0000 (17:27 +0800)]
crypto: arm/sha1-neon - Fix clang function cast warnings
Instead of casting the function which upsets clang for some reason,
change the assembly function siganture instead.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202304081828.zjGcFUyE-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 19 Apr 2023 08:37:59 +0000 (16:37 +0800)]
hwrng: Kconfig - Add HAS_IOMEM dependencies for exynos/meson/mtk/npcm
Add missing dependencies on HAS_IOMEM as otherwise they will trigger
failed builds with COMPILE_TEST enabled.
Also add dependencies on OF where appropriate.
Change the default so that these drivers are not enabled just because
COMPILE_TEST is turned on.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202304191106.swKbBeDh-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Łukasz Stelmach <l.stelmach@samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Horia GeantA [Mon, 17 Apr 2023 18:28:39 +0000 (20:28 +0200)]
crypto: caam - refactor RNG initialization
RNG (re-)initialization will be needed on pm resume path,
thus refactor the corresponding code out of the probe callback.
Signed-off-by: Horia GeantA <horia.geanta@nxp.com>
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linus Torvalds [Sun, 7 May 2023 20:34:35 +0000 (13:34 -0700)]
Linux 6.4-rc1
Linus Torvalds [Sun, 7 May 2023 18:32:18 +0000 (11:32 -0700)]
Merge tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git./linux/kernel/git/acme/linux
Pull perf tool updates from Arnaldo Carvalho de Melo:
"Third version of perf tool updates, with the build problems with with
using a 'vmlinux.h' generated from the main build fixed, and the bpf
skeleton build disabled by default.
Build:
- Require libtraceevent to build, one can disable it using
NO_LIBTRACEEVENT=1.
It is required for tools like 'perf sched', 'perf kvm', 'perf
trace', etc.
libtraceevent is available in most distros so installing
'libtraceevent-devel' should be a one-time event to continue
building perf as usual.
Using NO_LIBTRACEEVENT=1 produces tooling that is functional and
sufficient for lots of users not interested in those libtraceevent
dependent features.
- Allow Python support in 'perf script' when libtraceevent isn't
linked, as not all features requires it, for instance Intel PT does
not use tracepoints.
- Error if the python interpreter needed for jevents to work isn't
available and NO_JEVENTS=1 isn't set, preventing a build without
support for JSON vendor events, which is a rare but possible
condition. The two check error messages:
$(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
$(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
- Make libbpf 1.0 the minimum required when building with out of
tree, distro provided libbpf.
- Use libsdtc++'s and LLVM's libcxx's __cxa_demangle, a portable C++
demangler, add 'perf test' entry for it.
- Make binutils libraries opt in, as distros disable building with it
due to licensing, they were used for C++ demangling, for instance.
- Switch libpfm4 to opt-out rather than opt-in, if libpfm-devel (or
equivalent) isn't installed, we'll just have a build warning:
Makefile.config:1144: libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev
- Add a feature test for scandirat(), that is not implemented so far
in musl and uclibc, disabling features that need it, such as
scanning for tracepoints in /sys/kernel/tracing/events.
perf BPF filters:
- New feature where BPF can be used to filter samples, for instance:
$ sudo ./perf record -e cycles --filter 'period > 1000' true
$ sudo ./perf script
perf-exec 2273949 546850.708501: 5029 cycles:
ffffffff826f9e25 finish_wait+0x5 ([kernel.kallsyms])
perf-exec 2273949 546850.708508: 32409 cycles:
ffffffff826f9e25 finish_wait+0x5 ([kernel.kallsyms])
perf-exec 2273949 546850.708526: 143369 cycles:
ffffffff82b4cdbf xas_start+0x5f ([kernel.kallsyms])
perf-exec 2273949 546850.708600: 372650 cycles:
ffffffff8286b8f7 __pagevec_lru_add+0x117 ([kernel.kallsyms])
perf-exec 2273949 546850.708791: 482953 cycles:
ffffffff829190de __mod_memcg_lruvec_state+0x4e ([kernel.kallsyms])
true 2273949 546850.709036: 501985 cycles:
ffffffff828add7c tlb_gather_mmu+0x4c ([kernel.kallsyms])
true 2273949 546850.709292: 503065 cycles:
7f2446d97c03 _dl_map_object_deps+0x973 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2)
- In addition to 'period' (PERF_SAMPLE_PERIOD), the other
PERF_SAMPLE_ can be used for filtering, and also some other sample
accessible values, from tools/perf/Documentation/perf-record.txt:
Essentially the BPF filter expression is:
<term> <operator> <value> (("," | "||") <term> <operator> <value>)*
The <term> can be one of:
ip, id, tid, pid, cpu, time, addr, period, txn, weight, phys_addr,
code_pgsz, data_pgsz, weight1, weight2, weight3, ins_lat, retire_lat,
p_stage_cyc, mem_op, mem_lvl, mem_snoop, mem_remote, mem_lock,
mem_dtlb, mem_blk, mem_hops
The <operator> can be one of:
==, !=, >, >=, <, <=, &
The <value> can be one of:
<number> (for any term)
na, load, store, pfetch, exec (for mem_op)
l1, l2, l3, l4, cxl, io, any_cache, lfb, ram, pmem (for mem_lvl)
na, none, hit, miss, hitm, fwd, peer (for mem_snoop)
remote (for mem_remote)
na, locked (for mem_locked)
na, l1_hit, l1_miss, l2_hit, l2_miss, any_hit, any_miss, walk, fault (for mem_dtlb)
na, by_data, by_addr (for mem_blk)
hops0, hops1, hops2, hops3 (for mem_hops)
perf lock contention:
- Show lock type with address.
- Track and show mmap_lock, siglock and per-cpu rq_lock with address.
This is done for mmap_lock by following the current->mm pointer:
$ sudo ./perf lock con -abl -- sleep 10
contended total wait max wait avg wait address symbol
...
16344 312.30 ms 2.22 ms 19.11 us
ffff8cc702595640
17686 310.08 ms 1.49 ms 17.53 us
ffff8cc7025952c0
3 84.14 ms 45.79 ms 28.05 ms
ffff8cc78114c478 mmap_lock
3557 76.80 ms 68.75 us 21.59 us
ffff8cc77ca3af58
1 68.27 ms 68.27 ms 68.27 ms
ffff8cda745dfd70
9 54.53 ms 7.96 ms 6.06 ms
ffff8cc7642a48b8 mmap_lock
14629 44.01 ms 60.00 us 3.01 us
ffff8cc7625f9ca0
3481 42.63 ms 140.71 us 12.24 us
ffffffff937906ac vmap_area_lock
16194 38.73 ms 42.15 us 2.39 us
ffff8cd397cbc560
11 38.44 ms 10.39 ms 3.49 ms
ffff8ccd6d12fbb8 mmap_lock
1 5.43 ms 5.43 ms 5.43 ms
ffff8cd70018f0d8
1674 5.38 ms 422.93 us 3.21 us
ffffffff92e06080 tasklist_lock
581 4.51 ms 130.68 us 7.75 us
ffff8cc9b1259058
5 3.52 ms 1.27 ms 703.23 us
ffff8cc754510070
112 3.47 ms 56.47 us 31.02 us
ffff8ccee38b3120
381 3.31 ms 73.44 us 8.69 us
ffffffff93790690 purge_vmap_area_lock
255 3.19 ms 36.35 us 12.49 us
ffff8d053ce30c80
- Update default map size to 16384.
- Allocate single letter option -M for --map-nr-entries, as it is
proving being frequently used.
- Fix struct rq lock access for older kernels with BPF's CO-RE
(Compile once, run everywhere).
- Fix problems found with MSAn.
perf report/top:
- Add inline information when using --call-graph=fp or lbr, as was
already done to the --call-graph=dwarf callchain mode.
- Improve the 'srcfile' sort key performance by really using an
optimization introduced in 6.2 for the 'srcline' sort key that
avoids calling addr2line for comparision with each sample.
perf sched:
- Make 'perf sched latency/map/replay' to use "sched:sched_waking"
instead of "sched:sched_waking", consistent with 'perf record'
since
d566a9c2d482 ("perf sched: Prefer sched_waking event when it
exists").
perf ftrace:
- Make system wide the default target for latency subcommand, run the
following command then generate some network traffic and press
control+C:
# perf ftrace latency -T __kfree_skb
^C
DURATION | COUNT | GRAPH |
0 - 1 us | 27 | ############# |
1 - 2 us | 22 | ########### |
2 - 4 us | 8 | #### |
4 - 8 us | 5 | ## |
8 - 16 us | 24 | ############ |
16 - 32 us | 2 | # |
32 - 64 us | 1 | |
64 - 128 us | 0 | |
128 - 256 us | 0 | |
256 - 512 us | 0 | |
512 - 1024 us | 0 | |
1 - 2 ms | 0 | |
2 - 4 ms | 0 | |
4 - 8 ms | 0 | |
8 - 16 ms | 0 | |
16 - 32 ms | 0 | |
32 - 64 ms | 0 | |
64 - 128 ms | 0 | |
128 - 256 ms | 0 | |
256 - 512 ms | 0 | |
512 - 1024 ms | 0 | |
1 - ... s | 0 | |
#
perf top:
- Add --branch-history (LBR: Last Branch Record) option, just like
already available for 'perf record'.
- Fix segfault in thread__comm_len() where thread->comm was being
used outside thread->comm_lock.
perf annotate:
- Allow configuring objdump and addr2line in ~/.perfconfig., so that
you can use alternative binaries, such as llvm's.
perf kvm:
- Add TUI mode for 'perf kvm stat report'.
Reference counting:
- Add reference count checking infrastructure to check for use after
free, done to the 'cpumap', 'namespaces', 'maps' and 'map' structs,
more to come.
To build with it use -DREFCNT_CHECKING=1 in the make command line
to build tools/perf. Documented at:
https://perf.wiki.kernel.org/index.php/Reference_Count_Checking
- The above caught, for instance, fix, present in this series:
- Fix maps use after put in 'perf test "Share thread maps"':
'maps' is copied from leader, but the leader is put on line 79
and then 'maps' is used to read the reference count below - so
a use after put, with the put of maps happening within
thread__put.
Fixed by reversing the order of puts so that the leader is put
last.
- Also several fixes were made to places where reference counts were
not being held.
- Make this one of the tests in 'make -C tools/perf build-test' to
regularly build test it and to make sure no direct access to the
reference counted structs are made, doing that via accessors to
check the validity of the struct pointer.
ARM64:
- Fix 'perf report' segfault when filtering coresight traces by
sparse lists of CPUs.
- Add support for 'simd' as a sort field for 'perf report', to show
ARM's NEON SIMD's predicate flags: "partial" and "empty".
arm64 vendor events:
- Add N1 metrics.
Intel vendor events:
- Add graniterapids, grandridge and sierraforrest events.
- Refresh events for: alderlake, aldernaken, broadwell, broadwellde,
broadwellx, cascadelakx, haswell, haswellx, icelake, icelakex,
jaketown, meteorlake, knightslanding, sandybridge, sapphirerapids,
silvermont, skylake, tigerlake and westmereep-dp
- Refresh metrics for alderlake-n, broadwell, broadwellde,
broadwellx, haswell, haswellx, icelakex, ivybridge, ivytown and
skylakex.
perf stat:
- Implement --topdown using JSON metrics.
- Add TopdownL1 JSON metric as a default if present, but disable it
for now for some Intel hybrid architectures, a series of patches
addressing this is being reviewed and will be submitted for v6.5.
- Use metrics for --smi-cost.
- Update topdown documentation.
Vendor events (JSON) infrastructure:
- Add support for computing and printing metric threshold values. For
instance, here is one found in thesapphirerapids json file:
{
"BriefDescription": "Percentage of cycles spent in System Management Interrupts.",
"MetricExpr": "((msr@aperf@ - cycles) / msr@aperf@ if msr@smi@ > 0 else 0)",
"MetricGroup": "smi",
"MetricName": "smi_cycles",
"MetricThreshold": "smi_cycles > 0.1",
"ScaleUnit": "100%"
},
- Test parsing metric thresholds with the fake PMU in 'perf test
pmu-events'.
- Support for printing metric thresholds in 'perf list'.
- Add --metric-no-threshold option to 'perf stat'.
- Add rand (reverse and) and has_pmem (optane memory) support to
metrics.
- Sort list of input files to avoid depending on the order from
readdir() helping in obtaining reproducible builds.
S/390:
- Add common metrics: - CPI (cycles per instruction), prbstate (ratio
of instructions executed in problem state compared to total number
of instructions), l1mp (Level one instruction and data cache misses
per 100 instructions).
- Add cache metrics for z13, z14, z15 and z16.
- Add metric for TLB and cache.
ARM:
- Add raw decoding for SPE (Statistical Profiling Extension) v1.3 MTE
(Memory Tagging Extension) and MOPS (Memory Operations) load/store.
Intel PT hardware tracing:
- Add event type names UINTR (User interrupt delivered) and UIRET
(Exiting from user interrupt routine), documented in table 32-50
"CFE Packet Type and Vector Fields Details" in the Intel Processor
Trace chapter of The Intel SDM Volume 3 version 078.
- Add support for new branch instructions ERETS and ERETU.
- Fix CYC timestamps after standalone CBR
ARM CoreSight hardware tracing:
- Allow user to override timestamp and contextid settings.
- Fix segfault in dso lookup.
- Fix timeless decode mode detection.
- Add separate decode paths for timeless and per-thread modes.
auxtrace:
- Fix address filter entire kernel size.
Miscellaneous:
- Fix use-after-free and unaligned bugs in the PLT handling routines.
- Use zfree() to reduce chances of use after free.
- Add missing 0x prefix for addresses printed in hexadecimal in 'perf
probe'.
- Suppress massive unsupported target platform errors in the unwind
code.
- Fix return incorrect build_id size in elf_read_build_id().
- Fix 'perf scripts intel-pt-events.py' IPC output for Python 2 .
- Add missing new parameter in kfree_skb tracepoint to the python
scripts using it.
- Add 'perf bench syscall fork' benchmark.
- Add support for printing PERF_MEM_LVLNUM_UNC (Uncached access) in
'perf mem'.
- Fix wrong size expectation for perf test 'Setup struct
perf_event_attr' caused by the patch adding
perf_event_attr::config3.
- Fix some spelling mistakes"
* tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (365 commits)
Revert "perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL"
Revert "perf build: Warn for BPF skeletons if endian mismatches"
perf metrics: Fix SEGV with --for-each-cgroup
perf bpf skels: Stop using vmlinux.h generated from BTF, use subset of used structs + CO-RE
perf stat: Separate bperf from bpf_profiler
perf test record+probe_libc_inet_pton: Fix call chain match on x86_64
perf test record+probe_libc_inet_pton: Fix call chain match on s390
perf tracepoint: Fix memory leak in is_valid_tracepoint()
perf cs-etm: Add fix for coresight trace for any range of CPUs
perf build: Fix unescaped # in perf build-test
perf unwind: Suppress massive unsupported target platform errors
perf script: Add new parameter in kfree_skb tracepoint to the python scripts using it
perf script: Print raw ip instead of binary offset for callchain
perf symbols: Fix return incorrect build_id size in elf_read_build_id()
perf list: Modify the warning message about scandirat(3)
perf list: Fix memory leaks in print_tracepoint_events()
perf lock contention: Rework offset calculation with BPF CO-RE
perf lock contention: Fix struct rq lock access
perf stat: Disable TopdownL1 on hybrid
perf stat: Avoid SEGV on counter->name
...
Linus Torvalds [Sun, 7 May 2023 18:04:26 +0000 (11:04 -0700)]
Merge tag 'core-debugobjects-2023-05-06' of git://git./linux/kernel/git/tip/tip
Pull debugobjects fix from Thomas Gleixner:
"A single fix for debugobjects:
The recent fix to ensure atomicity of lookup and allocation
inadvertently broke the pool refill mechanism, so that debugobject
OOMs now in certain situations. The reason is that the functions which
got updated no longer invoke debug_objecs_init(), which is now the
only place to care about refilling the tracking object pool.
Restore the original behaviour by adding explicit refill opportunities
to those places"
* tag 'core-debugobjects-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobject: Ensure pool refill (again)
Linus Torvalds [Sun, 7 May 2023 17:57:14 +0000 (10:57 -0700)]
Merge tag 'v6.4-p2' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- A long-standing bug in crypto_engine
- A buggy but harmless check in the sun8i-ss driver
- A regression in the CRYPTO_USER interface
* tag 'v6.4-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: api - Fix CRYPTO_USER checks for report function
crypto: engine - fix crypto_queue backlog handling
crypto: sun8i-ss - Fix a test in sun8i_ss_setup_ivs()
Linus Torvalds [Sun, 7 May 2023 17:46:21 +0000 (10:46 -0700)]
Merge tag '6.4-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"smb3 client fixes, mostly DFS or reconnect related:
- Two DFS connection sharing fixes
- DFS refresh fix
- Reconnect fix
- Two potential use after free fixes
- Also print prefix patch in mount debug msg
- Two small cleanup fixes"
* tag '6.4-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Remove unneeded semicolon
cifs: fix sharing of DFS connections
cifs: avoid potential races when handling multiple dfs tcons
cifs: protect access of TCP_Server_Info::{origin,leaf}_fullpath
cifs: fix potential race when tree connecting ipc
cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname
cifs: print smb3_fs_context::source when mounting
cifs: protect session status check in smb2_reconnect()
SMB3.1.1: correct definition for app_instance_id create contexts
Linus Torvalds [Sun, 7 May 2023 17:31:45 +0000 (10:31 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A couple more patches that would be good to get into -rc1:
- Revert an i.MX patch that's causing video failures because division
math goes sideways
- Fix a clang + W=1 build isue where FIELD_PREP() is taking a 32-bit
variable instead of the usual u64 type
- Fix a Kconfig bug in the StarFive JH7110 clk config that selects a
reset controller when it can't be selected"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: starfive: Fix RESET_STARFIVE_JH7110 can't be selected in a specified case
clk: sp7021: Adjust width of _m in HWM_FIELD_PREP()
Revert "clk: imx: composite-8m: Add support to determine_rate"
Linus Torvalds [Sun, 7 May 2023 17:17:33 +0000 (10:17 -0700)]
Merge tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
- mailbox api: allow direct registration to a channel and convert omap
and pcc to use mbox_bind_client
- omap and hi6220 : use of_property_read_bool
- test: fix double-free and use spinlock header
- rockchip and bcm-pdc: drop of_match_ptr
- mpfs: change config symbol
- mediatek gce: support MT6795
- qcom apcs: consolidate of_device_id and support IPQ9574
* tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
dt-bindings: mailbox: qcom: add compatible for IPQ9574 SoC
mailbox: qcom-apcs-ipc: do not grow the of_device_id
dt-bindings: mailbox: qcom,apcs-kpss-global: use fallbacks for few variants
dt-bindings: mailbox: mediatek,gce-mailbox: Add support for MT6795
mailbox: mpfs: convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIRE
mailbox: bcm-pdc: drop of_match_ptr for ID table
mailbox: rockchip: drop of_match_ptr for ID table
mailbox: mailbox-test: Fix potential double-free in mbox_test_message_write()
mailbox: mailbox-test: Explicitly include header for spinlock support
mailbox: Use of_property_read_bool() for boolean properties
mailbox: pcc: Use mbox_bind_client
mailbox: omap: Use mbox_bind_client
mailbox: Allow direct registration to a channel
Linus Torvalds [Sun, 7 May 2023 17:00:09 +0000 (10:00 -0700)]
Merge tag 'for-6.4/io_uring-2023-05-07' of git://git.kernel.dk/linux
Pull more io_uring updates from Jens Axboe:
"Nothing major in here, just two different parts:
- A small series from Breno that enables passing the full SQE down
for ->uring_cmd().
This is a prerequisite for enabling full network socket operations.
Queued up a bit late because of some stylistic concerns that got
resolved, would be nice to have this in 6.4-rc1 so the dependent
work will be easier to handle for 6.5.
- Fix for the huge page coalescing, which was a regression introduced
in the 6.3 kernel release (Tobias)"
* tag 'for-6.4/io_uring-2023-05-07' of git://git.kernel.dk/linux:
io_uring: Remove unnecessary BUILD_BUG_ON
io_uring: Pass whole sqe to commands
io_uring: Create a helper to return the SQE size
io_uring/rsrc: check for nonconsecutive pages
Arnaldo Carvalho de Melo [Sat, 6 May 2023 21:07:37 +0000 (18:07 -0300)]
Revert "perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL"
This reverts commit
a980755beb5aca9002e1c95ba519b83a44242b5b.
We need to better polish building with BPF skels, so revert back to
making it an experimental feature that has to be explicitely enabled
using BUILD_BPF_SKEL=1.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Sat, 6 May 2023 21:06:43 +0000 (18:06 -0300)]
Revert "perf build: Warn for BPF skeletons if endian mismatches"
This reverts commit
51924ae69eea5bc90b5da525fbcf4bbd5f8551b3.
We need to better polish building with BPF skels, so revert back to
making it an experimental feature that has to be explicitely enabled
using BUILD_BPF_SKEL=1.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Sat, 6 May 2023 18:43:08 +0000 (11:43 -0700)]
Merge tag 'mm-stable-2023-05-06-10-49' of git://git./linux/kernel/git/akpm/mm
Pull dmapool updates - again - from Andrew Morton:
"Reinstate the dmapool changes which were accidentally removed by a
mishap on the last commit in the previous attempt at the series"
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup").
[ The whole old series:
def8574308ed..
2d55c16c0c54 results in an empty
diff because that last commit ended up being just a revert of all that
came everything before it. - Linus ]
* tag 'mm-stable-2023-05-06-10-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
dmapool: link blocks across pages
dmapool: don't memset on free twice
dmapool: simplify freeing
dmapool: consolidate page initialization
dmapool: rearrange page alloc failure handling
dmapool: move debug code to own functions
dmapool: speedup DMAPOOL_DEBUG with init_on_alloc
dmapool: cleanup integer types
dmapool: use sysfs_emit() instead of scnprintf()
dmapool: remove checks for dev == NULL
Linus Torvalds [Sat, 6 May 2023 18:25:03 +0000 (11:25 -0700)]
Merge tag 'mm-hotfixes-stable-2023-05-06-10-45' of git://git./linux/kernel/git/akpm/mm
Pull hotfixes from Andrew Morton:
"Five hotfixes.
Three are cc:stable, two pertain to merge window changes"
* tag 'mm-hotfixes-stable-2023-05-06-10-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
afs: fix the afs_dir_get_folio return value
nilfs2: do not write dirty data after degenerating to read-only
mm: do not reclaim private data from pinned page
nilfs2: fix infinite loop in nilfs_mdt_get_block()
mm/mmap/vma_merge: always check invariants
Keith Busch [Thu, 26 Jan 2023 21:51:24 +0000 (13:51 -0800)]
dmapool: link blocks across pages
The allocated dmapool pages are never freed for the lifetime of the pool.
There is no need for the two level list+stack lookup for finding a free
block since nothing is ever removed from the list. Just use a simple
stack, reducing time complexity to constant.
The implementation inserts the stack linking elements and the dma handle
of the block within itself when freed. This means the smallest possible
dmapool block is increased to at most 16 bytes to accommodate these
fields, but there are no exisiting users requesting a dma pool smaller
than that anyway.
Removing the list has a significant change in performance. Using the
kernel's micro-benchmarking self test:
Before:
# modprobe dmapool_test
dmapool test: size:16 blocks:8192 time:57282
dmapool test: size:64 blocks:8192 time:172562
dmapool test: size:256 blocks:8192 time:789247
dmapool test: size:1024 blocks:2048 time:371823
dmapool test: size:4096 blocks:1024 time:362237
After:
# modprobe dmapool_test
dmapool test: size:16 blocks:8192 time:24997
dmapool test: size:64 blocks:8192 time:26584
dmapool test: size:256 blocks:8192 time:33542
dmapool test: size:1024 blocks:2048 time:9022
dmapool test: size:4096 blocks:1024 time:6045
The module test allocates quite a few blocks that may not accurately
represent how these pools are used in real life. For a more marco level
benchmark, running fio high-depth + high-batched on nvme, this patch shows
submission and completion latency reduced by ~100usec each, 1% IOPs
improvement, and perf record's time spent in dma_pool_alloc/free were
reduced by half.
[kbusch@kernel.org: push new blocks in ascending order]
Link: https://lkml.kernel.org/r/20230221165400.1595247-1-kbusch@meta.com
Link: https://lkml.kernel.org/r/20230126215125.4069751-12-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:23 +0000 (13:51 -0800)]
dmapool: don't memset on free twice
If debug is enabled, dmapool will poison the range, so no need to clear it
to 0 immediately before writing over it.
Link: https://lkml.kernel.org/r/20230126215125.4069751-11-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:22 +0000 (13:51 -0800)]
dmapool: simplify freeing
The actions for busy and not busy are mostly the same, so combine these
and remove the unnecessary function. Also, the pool is about to be freed
so there's no need to poison the page data since we only check for poison
on alloc, which can't be done on a freed pool.
Link: https://lkml.kernel.org/r/20230126215125.4069751-10-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:21 +0000 (13:51 -0800)]
dmapool: consolidate page initialization
Various fields of the dma pool are set in different places. Move it all
to one function.
Link: https://lkml.kernel.org/r/20230126215125.4069751-9-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:20 +0000 (13:51 -0800)]
dmapool: rearrange page alloc failure handling
Handle the error in a condition so the good path can be in the normal
flow.
Link: https://lkml.kernel.org/r/20230126215125.4069751-8-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:19 +0000 (13:51 -0800)]
dmapool: move debug code to own functions
Clean up the normal path by moving the debug code outside it.
Link: https://lkml.kernel.org/r/20230126215125.4069751-7-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:18 +0000 (13:51 -0800)]
dmapool: speedup DMAPOOL_DEBUG with init_on_alloc
Avoid double-memset of the same allocated memory in dma_pool_alloc() when
both DMAPOOL_DEBUG is enabled and init_on_alloc=1.
Link: https://lkml.kernel.org/r/20230126215125.4069751-6-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:17 +0000 (13:51 -0800)]
dmapool: cleanup integer types
To represent the size of a single allocation, dmapool currently uses
'unsigned int' in some places and 'size_t' in other places. Standardize
on 'unsigned int' to reduce overhead, but use 'size_t' when counting all
the blocks in the entire pool.
Link: https://lkml.kernel.org/r/20230126215125.4069751-5-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:16 +0000 (13:51 -0800)]
dmapool: use sysfs_emit() instead of scnprintf()
Use sysfs_emit instead of scnprintf, snprintf or sprintf.
Link: https://lkml.kernel.org/r/20230126215125.4069751-4-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:15 +0000 (13:51 -0800)]
dmapool: remove checks for dev == NULL
dmapool originally tried to support pools without a device because
dma_alloc_coherent() supports allocations without a device. But nobody
ended up using dma pools without a device, and trying to do so will result
in an oops. So remove the checks for pool->dev == NULL since they are
unneeded bloat.
[kbusch@kernel.org: add check for null dev on create]
Link: https://lkml.kernel.org/r/20230126215125.4069751-3-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linus Torvalds [Sat, 6 May 2023 17:16:19 +0000 (10:16 -0700)]
nfs: fix mis-merged __filemap_get_folio() error check
Fix another case of an incorrect check for the returned 'folio' value
from __filemap_get_folio().
The failure case used to return NULL, but was changed by commit
66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio").
But in the meantime, commit
ec108d3cc766 ("NFS: Convert readdir page
array functions to use a folio") added a new user of that function.
And my merge of the two did not fix this up correctly.
The ext4 merge had the same issue, but that one had been caught in
linux-next and got properly fixed while merging.
Fixes:
0127f25b5dfc ("Merge tag 'nfs-for-6.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs")
Cc: Anna Schumaker <anna@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christoph Hellwig [Wed, 3 May 2023 15:45:26 +0000 (17:45 +0200)]
afs: fix the afs_dir_get_folio return value
Keep returning NULL on failure instead of letting an ERR_PTR escape to
callers that don't expect it.
Link: https://lkml.kernel.org/r/20230503154526.1223095-2-hch@lst.de
Fixes:
66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: David Howells <dhowells@redhat.com>
Tested-by: David Howells <dhowells@redhat.com>
Cc: Marc Dionne <marc.dionne@auristor.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Ryusuke Konishi [Thu, 27 Apr 2023 01:15:26 +0000 (10:15 +0900)]
nilfs2: do not write dirty data after degenerating to read-only
According to syzbot's report, mark_buffer_dirty() called from
nilfs_segctor_do_construct() outputs a warning with some patterns after
nilfs2 detects metadata corruption and degrades to read-only mode.
After such read-only degeneration, page cache data may be cleared through
nilfs_clear_dirty_page() which may also clear the uptodate flag for their
buffer heads. However, even after the degeneration, log writes are still
performed by unmount processing etc., which causes mark_buffer_dirty() to
be called for buffer heads without the "uptodate" flag and causes the
warning.
Since any writes should not be done to a read-only file system in the
first place, this fixes the warning in mark_buffer_dirty() by letting
nilfs_segctor_do_construct() abort early if in read-only mode.
This also changes the retry check of nilfs_segctor_write_out() to avoid
unnecessary log write retries if it detects -EROFS that
nilfs_segctor_do_construct() returned.
Link: https://lkml.kernel.org/r/20230427011526.13457-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+2af3bc9585be7f23f290@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=2af3bc9585be7f23f290
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Jan Kara [Fri, 28 Apr 2023 12:41:40 +0000 (14:41 +0200)]
mm: do not reclaim private data from pinned page
If the page is pinned, there's no point in trying to reclaim it.
Furthermore if the page is from the page cache we don't want to reclaim
fs-private data from the page because the pinning process may be writing
to the page at any time and reclaiming fs private info on a dirty page can
upset the filesystem (see link below).
Link: https://lore.kernel.org/linux-mm/20180103100430.GE4911@quack2.suse.cz
Link: https://lkml.kernel.org/r/20230428124140.30166-1-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Ryusuke Konishi [Sun, 30 Apr 2023 19:30:46 +0000 (04:30 +0900)]
nilfs2: fix infinite loop in nilfs_mdt_get_block()
If the disk image that nilfs2 mounts is corrupted and a virtual block
address obtained by block lookup for a metadata file is invalid,
nilfs_bmap_lookup_at_level() may return the same internal return code as
-ENOENT, meaning the block does not exist in the metadata file.
This duplication of return codes confuses nilfs_mdt_get_block(), causing
it to read and create a metadata block indefinitely.
In particular, if this happens to the inode metadata file, ifile,
semaphore i_rwsem can be left held, causing task hangs in lock_mount.
Fix this issue by making nilfs_bmap_lookup_at_level() treat virtual block
address translation failures with -ENOENT as metadata corruption instead
of returning the error code.
Link: https://lkml.kernel.org/r/20230430193046.6769-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+221d75710bde87fa0e97@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=221d75710bde87fa0e97
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Lorenzo Stoakes [Sun, 30 Apr 2023 20:19:17 +0000 (21:19 +0100)]
mm/mmap/vma_merge: always check invariants
We may still have inconsistent input parameters even if we choose not to
merge and the vma_merge() invariant checks are useful for checking this
with no production runtime cost (these are only relevant when
CONFIG_DEBUG_VM is specified).
Therefore, perform these checks regardless of whether we merge.
This is relevant, as a recent issue (addressed in commit "mm/mempolicy:
Correctly update prev when policy is equal on mbind") in the mbind logic
was only picked up in the 6.2.y stable branch where these assertions are
performed prior to determining mergeability.
Had this remained the same in mainline this issue may have been picked up
faster, so moving forward let's always check them.
Link: https://lkml.kernel.org/r/df548a6ae3fa135eec3b446eb3dae8eb4227da97.1682885809.git.lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Matthew Wilcox [Sat, 6 May 2023 16:04:14 +0000 (17:04 +0100)]
filemap: Handle error return from __filemap_get_folio()
Smatch reports that filemap_fault() was missed in the conversion of
__filemap_get_folio() error returns from NULL to ERR_PTR.
Fixes:
66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Reported-by: syzbot+48011b86c8ea329af1b9@syzkaller.appspotmail.com
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 6 May 2023 15:37:28 +0000 (08:37 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"Six late arriving patches for the merge window. Five are minor
assorted fixes and updates.
The IPR driver change removes SATA support, which will now allow a
major cleanup in the ATA subsystem because it was the only driver
still using the old attachment mechanism. The driver is only used on
power systems and SATA was used to support a DVD device, which has
long been moved to a different hba. IBM chose this route instead of
porting ipr to the newer SATA interfaces"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qedi: Fix use after free bug in qedi_remove()
scsi: ufs: core: mcq: Fix &hwq->cq_lock deadlock issue
scsi: ipr: Remove several unused variables
scsi: pm80xx: Log device registration
scsi: ipr: Remove SATA support
scsi: scsi_debug: Abort commands from scsi_debug_device_reset()
Linus Torvalds [Sat, 6 May 2023 15:28:58 +0000 (08:28 -0700)]
Merge tag 'for-6.4/block-2023-05-06' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- MD pull request via Song:
- Improve raid5 sequential IO performance on spinning disks, which
fixes a regression since v6.0 (Jan Kara)
- Fix bitmap offset types, which fixes an issue introduced in this
merge window (Jonathan Derrick)
- Cleanup of hweight type used for cgroup writeback (Maxim)
- Fix a regression with the "has_submit_bio" changes across partitions
(Ming)
- Cleanup of QUEUE_FLAG_ADD_RANDOM clearing.
We used to set this flag on queues non blk-mq queues, and hence some
drivers clear it unconditionally. Since all of these have since been
converted to true blk-mq drivers, drop the useless clear as the bit
is not set (Chaitanya)
- Fix the flags being set in a bio for a flush for drbd (Christoph)
- Cleanup and deduplication of the code handling setting block device
capacity (Damien)
- Fix for ublk handling IO timeouts (Ming)
- Fix for a regression in blk-cgroup teardown (Tao)
- NBD documentation and code fixes (Eric)
- Convert blk-integrity to using device_attributes rather than a second
kobject to manage lifetimes (Thomas)
* tag 'for-6.4/block-2023-05-06' of git://git.kernel.dk/linux:
ublk: add timeout handler
drbd: correctly submit flush bio on barrier
mailmap: add mailmap entries for Jens Axboe
block: Skip destroyed blkg when restart in blkg_destroy_all()
writeback: fix call of incorrect macro
md: Fix bitmap offset type in sb writer
md/raid5: Improve performance for sequential IO
docs nbd: userspace NBD now favors github over sourceforge
block nbd: use req.cookie instead of req.handle
uapi nbd: add cookie alias to handle
uapi nbd: improve doc links to userspace spec
blk-integrity: register sysfs attributes on struct device
blk-integrity: convert to struct device_attribute
blk-integrity: use sysfs_emit
block/drivers: remove dead clear of random flag
block: sync part's ->bd_has_submit_bio with disk's
block: Cleanup set_capacity()/bdev_set_nr_sectors()
Linus Torvalds [Sat, 6 May 2023 15:15:20 +0000 (08:15 -0700)]
Merge tag 'pipe-nonblock-2023-05-06' of git://git.kernel.dk/linux
Pull nonblocking pipe io_uring support from Jens Axboe:
"Here's the revised edition of the FMODE_NOWAIT support for pipes, in
which we just flag it as such supporting FMODE_NOWAIT unconditionally,
but clear it if we ever end up using splice/vmsplice on the pipe.
The pipe read/write side is perfectly fine for nonblocking IO, however
splice and vmsplice can potentially wait for IO with the pipe lock
held"
* tag 'pipe-nonblock-2023-05-06' of git://git.kernel.dk/linux:
pipe: set FMODE_NOWAIT on pipes
splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
Linus Torvalds [Sat, 6 May 2023 15:07:11 +0000 (08:07 -0700)]
Merge tag 'sound-fix-6.4-rc1' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes for rc1.
The only (LOC-wise) dominant change was ASoC Qualcomm fix, but most of
it was merely a code shuffling.
Another significant change here is for ALSA PCM core; it received a
revert and a series of fixes for PCM auto-silencing where it caused a
regression in the previous PR for rc1.
Others are all small: ASoC Intel fixes, various quirks for ASoC AMD,
HD-audio and USB-audio, the continued legacy emu10k1 code cleanup, and
some documentation updates"
* tag 'sound-fix-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (23 commits)
ALSA: pcm: use exit controlled loop in snd_pcm_playback_silence()
ALSA: pcm: simplify top-up mode init in snd_pcm_playback_silence()
ALSA: pcm: playback silence - move silence variable updates to separate function
ALSA: pcm: playback silence - remove extra code
ALSA: pcm: fix playback silence - correct incremental silencing
ALSA: pcm: fix playback silence - use the actual new_hw_ptr for the threshold mode
ALSA: pcm: Revert "ALSA: pcm: rewrite snd_pcm_playback_silence()"
ALSA: hda/realtek: Fix mute and micmute LEDs for an HP laptop
ALSA: caiaq: input: Add error handling for unsupported input methods in `snd_usb_caiaq_input_init`
ALSA: usb-audio: Add quirk for Pioneer DDJ-800
ALSA: hda/realtek: support HP Pavilion Aero 13-be0xxx Mute LED
ASoC: Intel: soc-acpi-cht: Add quirk for Nextbook Ares 8A tablet
ASoC: amd: yc: Add Asus VivoBook Pro 14 OLED M6400RC to the quirks list for acp6x
ASoC: codecs: wcd938x: fix accessing regmap on unattached devices
ALSA: docs: Fix code block indentation in ALSA driver example
ALSA: docs: Extend module parameters description
ALSA: hda/realtek: Add quirk for ASUS UM3402YAR using CS35L41
ALSA: emu10k1: use more existing defines instead of open-coded numbers
ASoC: amd: yc: Add ASUS M3402RA into DMI table
ALSA: hda/realtek: Add quirk for ThinkPad P1 Gen 6
...
Linus Torvalds [Sat, 6 May 2023 15:06:09 +0000 (08:06 -0700)]
Merge tag 'regulator-fix-v6.4' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"A trivial typo fix that came in during the merge window"
* tag 'regulator-fix-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: consumer.rst: fix 'regulator_enable' typo.
Linus Torvalds [Sat, 6 May 2023 02:16:58 +0000 (19:16 -0700)]
Merge tag '6.4-rc-ksmbd-server-fixes-part2' of git://git.samba.org/ksmbd
Pull ksmbd server fixes from Steve French:
"Ten ksmbd server fixes, including some important security fixes:
- Two use after free fixes
- Fix RCU callback race
- Deadlock fix
- Three patches to prevent session setup attacks
- Prevent guest users from establishing multichannel sessions
- Fix null pointer dereference in query FS info
- Memleak fix"
* tag '6.4-rc-ksmbd-server-fixes-part2' of git://git.samba.org/ksmbd:
ksmbd: call rcu_barrier() in ksmbd_server_exit()
ksmbd: fix racy issue under cocurrent smb2 tree disconnect
ksmbd: fix racy issue from smb2 close and logoff with multichannel
ksmbd: not allow guest user on multichannel
ksmbd: fix deadlock in ksmbd_find_crypto_ctx()
ksmbd: block asynchronous requests when making a delay on session setup
ksmbd: destroy expired sessions
ksmbd: fix racy issue from session setup and logoff
ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()
ksmbd: fix memleak in session setup
Linus Torvalds [Sat, 6 May 2023 02:12:01 +0000 (19:12 -0700)]
Merge tag 'net-6.4-rc1' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter.
Current release - regressions:
- sched: act_pedit: free pedit keys on bail from offset check
Current release - new code bugs:
- pds_core:
- Kconfig fixes (DEBUGFS and AUXILIARY_BUS)
- fix mutex double unlock in error path
Previous releases - regressions:
- sched: cls_api: remove block_cb from driver_list before freeing
- nf_tables: fix ct untracked match breakage
- eth: mtk_eth_soc: drop generic vlan rx offload
- sched: flower: fix error handler on replace
Previous releases - always broken:
- tcp: fix skb_copy_ubufs() vs BIG TCP
- ipv6: fix skb hash for some RST packets
- af_packet: don't send zero-byte data in packet_sendmsg_spkt()
- rxrpc: timeout handling fixes after moving client call connection
to the I/O thread
- ixgbe: fix panic during XDP_TX with > 64 CPUs
- igc: RMW the SRRCTL register to prevent losing timestamp config
- dsa: mt7530: fix corrupt frames using TRGMII on 40 MHz XTAL MT7621
- r8152:
- fix flow control issue of RTL8156A
- fix the poor throughput for 2.5G devices
- move setting r8153b_rx_agg_chg_indicate() to fix coalescing
- enable autosuspend
- ncsi: clear Tx enable mode when handling a Config required AEN
- octeontx2-pf: macsec: fixes for CN10KB ASIC rev
Misc:
- 9p: remove INET dependency"
* tag 'net-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (69 commits)
net: bcmgenet: Remove phy_stop() from bcmgenet_netif_stop()
pds_core: fix mutex double unlock in error path
net/sched: flower: fix error handler on replace
Revert "net/sched: flower: Fix wrong handle assignment during filter change"
net/sched: flower: fix filter idr initialization
net: fec: correct the counting of XDP sent frames
bonding: add xdp_features support
net: enetc: check the index of the SFI rather than the handle
sfc: Add back mailing list
virtio_net: suppress cpu stall when free_unused_bufs
ice: block LAN in case of VF to VF offload
net: dsa: mt7530: fix network connectivity with multiple CPU ports
net: dsa: mt7530: fix corrupt frames using trgmii on 40 MHz XTAL MT7621
9p: Remove INET dependency
netfilter: nf_tables: fix ct untracked match breakage
af_packet: Don't send zero-byte data in packet_sendmsg_spkt().
igc: read before write to SRRCTL register
pds_core: add AUXILIARY_BUS and NET_DEVLINK to Kconfig
pds_core: remove CONFIG_DEBUG_FS from makefile
ionic: catch failure from devlink_alloc
...
Linus Torvalds [Sat, 6 May 2023 02:07:17 +0000 (19:07 -0700)]
Merge tag 'i2c-for-6.4-rc1-part2' of git://git./linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:
"Some more driver bugfixes and a DT binding conversion"
* tag 'i2c-for-6.4-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: brcm,kona-i2c: convert to YAML
i2c: gxp: fix build failure without CONFIG_I2C_SLAVE
i2c: imx-lpi2c: avoid taking clk_prepare mutex in PM callbacks
i2c: omap: Fix standard mode false ACK readings
i2c: tegra: Fix PEC support for SMBUS block read
Lukas Bulwahn [Fri, 5 May 2023 22:39:09 +0000 (00:39 +0200)]
s390: remove the unneeded select GCC12_NO_ARRAY_BOUNDS
Commit
0da6e5fd6c37 ("gcc: disable '-Warray-bounds' for gcc-13 too") makes
config GCC11_NO_ARRAY_BOUNDS to be for disabling -Warray-bounds in any gcc
version 11 and upwards, and with that, removes the GCC12_NO_ARRAY_BOUNDS
config as it is now covered by the semantics of GCC11_NO_ARRAY_BOUNDS.
As GCC11_NO_ARRAY_BOUNDS is yes by default, there is no need for the s390
architecture to explicitly select GCC11_NO_ARRAY_BOUNDS. Hence, the select
GCC12_NO_ARRAY_BOUNDS in arch/s390/Kconfig can simply be dropped.
Remove the unneeded "select GCC12_NO_ARRAY_BOUNDS".
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ian Rogers [Fri, 5 May 2023 20:41:19 +0000 (13:41 -0700)]
perf metrics: Fix SEGV with --for-each-cgroup
Ensure the metric threshold is copied correctly or else a use of
uninitialized memory happens.
Fixes:
d0a3052f6faefffc ("perf metric: Compute and print threshold values")
Reported-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230505204119.3443491-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 4 May 2023 22:03:51 +0000 (19:03 -0300)]
perf bpf skels: Stop using vmlinux.h generated from BTF, use subset of used structs + CO-RE
Linus reported a build break due to using a vmlinux without a BTF elf
section to generate the vmlinux.h header with bpftool for use in the BPF
tools in tools/perf/util/bpf_skel/*.bpf.c.
Instead add a vmlinux.h file with the structs needed with the fields the
tools need, marking the structs with __attribute__((preserve_access_index)),
so that libbpf's CO-RE code can fixup the struct field offsets.
In some cases the vmlinux.h file that was being generated by bpftool
from the kernel BTF information was not needed at all, just including
linux/bpf.h, sometimes linux/perf_event.h was enough as non-UAPI
types were not being used.
To keep te patch small, include those UAPI headers from the trimmed down
vmlinux.h file, that then provides the tools with just the structs and
the subset of its fields needed for them.
Testing it:
# perf lock contention -b find / > /dev/null
^C contended total wait max wait avg wait type caller
7 53.59 us 10.86 us 7.66 us rwlock:R start_this_handle+0xa0
2 30.35 us 21.99 us 15.17 us rwsem:R iterate_dir+0x52
1 9.04 us 9.04 us 9.04 us rwlock:W start_this_handle+0x291
1 8.73 us 8.73 us 8.73 us spinlock raw_spin_rq_lock_nested+0x1e
#
# perf lock contention -abl find / > /dev/null
^C contended total wait max wait avg wait address symbol
1 262.96 ms 262.96 ms 262.96 ms
ffff8e67502d0170 (mutex)
12 244.24 us 39.91 us 20.35 us
ffff8e6af56f8070 mmap_lock (rwsem)
7 30.28 us 6.85 us 4.33 us
ffff8e6c865f1d40 rq_lock (spinlock)
3 7.42 us 4.03 us 2.47 us
ffff8e6c864b1d40 rq_lock (spinlock)
2 3.72 us 2.19 us 1.86 us
ffff8e6c86571d40 rq_lock (spinlock)
1 2.42 us 2.42 us 2.42 us
ffff8e6c86471d40 rq_lock (spinlock)
4 2.11 us 559 ns 527 ns
ffffffff9a146c80 rcu_state (spinlock)
3 1.45 us 818 ns 482 ns
ffff8e674ae8384c (rwlock)
1 870 ns 870 ns 870 ns
ffff8e68456ee060 (rwlock)
1 663 ns 663 ns 663 ns
ffff8e6c864f1d40 rq_lock (spinlock)
1 573 ns 573 ns 573 ns
ffff8e6c86531d40 rq_lock (spinlock)
1 472 ns 472 ns 472 ns
ffff8e6c86431740 (spinlock)
1 397 ns 397 ns 397 ns
ffff8e67413a4f04 (spinlock)
#
# perf test offcpu
95: perf record offcpu profiling tests : Ok
#
# perf kwork latency --use-bpf
Starting trace, Hit <Ctrl+C> to stop and report
^C
Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end |
--------------------------------------------------------------------------------------------------------------------------------
(w)flush_memcg_stats_dwork | 0000 | 1056.212 ms | 2 | 2112.345 ms | 550113.229573 s | 550115.341919 s |
(w)toggle_allocation_gate | 0000 | 10.144 ms | 62 | 416.389 ms | 550113.453518 s | 550113.869907 s |
(w)0xffff8e6748e28080 | 0002 | 0.623 ms | 1 | 0.623 ms | 550110.989841 s | 550110.990464 s |
(w)vmstat_shepherd | 0000 | 0.586 ms | 10 | 2.828 ms | 550111.971536 s | 550111.974364 s |
(w)vmstat_update | 0007 | 0.363 ms | 5 | 1.634 ms | 550113.222520 s | 550113.224154 s |
(w)vmstat_update | 0000 | 0.324 ms | 10 | 2.827 ms | 550111.971526 s | 550111.974354 s |
(w)0xffff8e674c5f4a58 | 0002 | 0.102 ms | 5 | 0.134 ms | 550110.989839 s | 550110.989972 s |
(w)psi_avgs_work | 0001 | 0.086 ms | 3 | 0.107 ms | 550114.957852 s | 550114.957959 s |
(w)psi_avgs_work | 0000 | 0.079 ms | 5 | 0.100 ms | 550118.605668 s | 550118.605768 s |
(w)kfree_rcu_monitor | 0006 | 0.079 ms | 1 | 0.079 ms | 550110.925821 s | 550110.925900 s |
(w)psi_avgs_work | 0004 | 0.079 ms | 1 | 0.079 ms | 550109.581835 s | 550109.581914 s |
(w)psi_avgs_work | 0001 | 0.078 ms | 1 | 0.078 ms | 550109.197809 s | 550109.197887 s |
(w)psi_avgs_work | 0002 | 0.077 ms | 5 | 0.086 ms | 550110.669819 s | 550110.669905 s |
<SNIP>
# strace -e bpf -o perf-stat-bpf-counters.output perf stat -e cycles --bpf-counters sleep 1
Performance counter stats for 'sleep 1':
6,197,983 cycles
1.
003922848 seconds time elapsed
0.
000000000 seconds user
0.
002032000 seconds sys
# head -7 perf-stat-bpf-counters.output
bpf(BPF_OBJ_GET, {pathname="/sys/fs/bpf/perf_attr_map", bpf_fd=0, file_flags=0}, 16) = 3
bpf(BPF_OBJ_GET_INFO_BY_FD, {info={bpf_fd=3, info_len=88, info=0x7ffcead64990}}, 16) = 0
bpf(BPF_MAP_LOOKUP_ELEM, {map_fd=3, key=0x24129e0, value=0x7ffcead65a48, flags=BPF_ANY}, 32) = 0
bpf(BPF_LINK_GET_FD_BY_ID, {link_id=1252}, 12) = -1 ENOENT (No such file or directory)
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0x7ffcead65780, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0,
+func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0}, 116) = 4
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0x7ffcead65920, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0,
+func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 4
bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0\20\0\0\0\20\0\0\0\5\0\0\0\1\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=45, btf_log_size=0, btf_log_level=0}, 28) = 4
#
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Song Liu <song@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Co-developed-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/lkml/ZFU1PJrn8YtHIqno@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jakub Kicinski [Fri, 5 May 2023 20:35:45 +0000 (13:35 -0700)]
Merge git://git./linux/kernel/git/netdev/net-next
There's a fix which landed in net-next, pull it in along
with the couple of minor cleanups.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Dmitrii Dolgov [Wed, 12 Apr 2023 18:23:16 +0000 (20:23 +0200)]
perf stat: Separate bperf from bpf_profiler
It seems that perf stat -b <prog id> doesn't produce any results:
$ perf stat -e cycles -b 4 -I 10000 -vvv
Control descriptor is not initialized
cycles: 0 0 0
time counts unit events
10.
007641640 <not supported> cycles
Looks like this happens because fentry/fexit progs are getting loaded, but the
corresponding perf event is not enabled and not added into the events bpf map.
I think there is some mixing up between two type of bpf support, one for bperf
and one for bpf_profiler. Both are identified via evsel__is_bpf, based on which
perf events are enabled, but for the latter (bpf_profiler) a perf event is
required. Using evsel__is_bperf to check only bperf produces expected results:
$ perf stat -e cycles -b 4 -I 10000 -vvv
Control descriptor is not initialized
------------------------------------------------------------
perf_event_attr:
size 136
sample_type IDENTIFIER
read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
disabled 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 3
------------------------------------------------------------
[...perf_event_attr for other CPUs...]
------------------------------------------------------------
cycles: 309426 169009 169009
time counts unit events
10.
010091271 309426 cycles
The final numbers correspond (at least in the level of magnitude) to the
same metric obtained via bpftool.
Fixes:
112cb56164bc2108 ("perf stat: Introduce config stat.bpf-counter-events")
Reviewed-by: Song Liu <song@kernel.org>
Signed-off-by: Dmitrii Dolgov <9erthalion6@gmail.com>
Tested-by: Song Liu <song@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230412182316.11628-1-9erthalion6@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>