Stefan Haberland [Wed, 5 Jan 2011 11:48:06 +0000 (12:48 +0100)]
[S390] dasd: Add support for raw ECKD access.
Normal I/O operations through the DASD device driver give only access
to the data fields of an ECKD device even for track based I/O.
This patch extends the DASD device driver to give access to whole
ECKD tracks including count, key and data fields.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Haberland [Wed, 5 Jan 2011 11:48:05 +0000 (12:48 +0100)]
[S390] dasd: Prevent deadlock during suspend/resume.
The freeze callback may set a stop bit so that a worker thread could
not start I/O. The discipline specific freeze function waits for the
worker to be completed.
Set the stop_bit after the discipline specific freeze function has
returned and no worker is running.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Weinhuber [Wed, 5 Jan 2011 11:48:04 +0000 (12:48 +0100)]
[S390] dasd: Improve handling of stolen DASD reservation
If a DASD device has been reserved by a Linux system, and later
this reservation is ‘stolen’ by a second system by means of an
unconditional reserve, then the first system receives a
notification about this fact. With this patch such an event can
be either ignored, as before, or it can be used to let the device
fail all I/O request, so that the device will not block anymore.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Weinhuber [Wed, 5 Jan 2011 11:48:03 +0000 (12:48 +0100)]
[S390] dasd: do path verification for paths added at runtime
When a new path is added at runtime, the CIO layer will call the drivers
path_event callback. The DASD device driver uses this callback to trigger
a path verification for the new path. The driver will use only those
paths for I/O, which have been successfully verified.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Weinhuber [Wed, 5 Jan 2011 11:48:02 +0000 (12:48 +0100)]
[S390] dasd: add High Performance FICON multitrack support
Some storage systems support multitrack High Performance FICON
requests, which read or write data to more than one track.
This patch enables the DASD device driver to generate multitrack
High Performance FICON requests.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Weinhuber [Wed, 5 Jan 2011 11:48:01 +0000 (12:48 +0100)]
[S390] cio: reduce memory consumption of itcw structures
Any list of indirect data adresses (TIDAL) used by a TCW must not
cross a page boundary. The original itcw implementation complies with
this restriction by allocating allmost twice as much memory as
actually needed, so that in any case there is enough room for the full
TIDAL, either above or below the page boundary.
This patch implements an alternative method, by using a TTIC TIDAW to
connect TIDAL parts below and above a page boundary.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:48:00 +0000 (12:48 +0100)]
[S390] nmi: enable machine checks early
Until now machine checks for the swapper process of the IPL cpu are just
implicitly (and more or less accidently) enabled when the first time the
idle process goes into idle state and loads an enabled wait psw.
Before that machine checks are disabled.
So let's enable them explicitly in trap_init() so we have a well defined
time when machine checks are enabled.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:59 +0000 (12:47 +0100)]
[S390] qeth: buffer count imbalance
The used buffers counter is not incremented in case of an error so
the counter can become negative. Increment the used buffers counter
before checking for errors.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Sebastian Ott [Wed, 5 Jan 2011 11:47:58 +0000 (12:47 +0100)]
[S390] css: update subchannel descriptor
Update the subchannel descriptor if we receive a
"Installed parameters modified" crw.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:57 +0000 (12:47 +0100)]
[S390] 31 bit entry.S update.
Make the code in the 31 bit entry.S code as similar as possible to the
64 bit version in entry64.S. That makes it easier to add new code to
the first level interrupt handler that affects both 31 and 64 bit kernels.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Sebastian Ott [Wed, 5 Jan 2011 11:47:56 +0000 (12:47 +0100)]
[S390] cio: obtain mdc value per channel path
Add support to accumulate the number of 64K-bytes blocks all paths
to a device at least support for a transport command.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:55 +0000 (12:47 +0100)]
[S390] nohz: optimize arch_needs_cpu()
arch_needs_cpu() gets always executed on the current cpu. Therefore
the cpu parameter can be ignored it is possible to use __get_cpu_var()
instead of per_cpu() to access the per_cpu variable, which will
generate better code.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:54 +0000 (12:47 +0100)]
[S390] qdio: cleanup SIGA sync
Simplify the SIGA sync code and add unlikely annotations. In polling mode
SBALs may be accessed without interrupt, so call SIGA sync before every scan.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:53 +0000 (12:47 +0100)]
[S390] qdio: remove enhanced SIGA
HiperSocket devices only use one SBAL per qdio call without the enhanced SIGA
feature. Since that feature is currently not used remove it from the qdio code
so the compiler can generate better code for the HiperSocket outbound path.
While at it mark the SIGA error conditions as unlikely.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:52 +0000 (12:47 +0100)]
[S390] qdio: use proper QEBSM operand for SIGA-R and SIGA-S
If QIOASSIST is enabled for a qdio device the SIGA instruction requires
a modified function code. This function code modifier was missing for
SIGA-R and SIGA-S which can lead to a kernel panic caused by an
operand exception.
Cc: stable@kernel.org
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:51 +0000 (12:47 +0100)]
[S390] qdio: outbound queue full counter
Add a counter for outbound queue full events to the qdio statistics.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:50 +0000 (12:47 +0100)]
[S390] qdio: outbound tasklet scan threshold
Introduce a scan treshold for the qdio outbound queues. By setting the
threshold the driver can tell qdio after how much used SBALs qdio
should schedule the outbound tasklet that scans the queue for finished
SBALs. The threshold is specific by the drivers because a
Hipersockets device is much faster in utilizing outbound buffers than a
ZFCP or OSA device.
The default values after how many used SBALs the tasklet should run are:
OSA: > 31 SBALs
Hipersockets: > 7 SBALs
zfcp: > 55 SBALs
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:49 +0000 (12:47 +0100)]
[S390] qdio: prevent race for shared indicators
If the shared indicator is used the following race leads to
an inbound stall:
Device CPU0 CPU1
========================================================
non-shared DSCI =>1
ALSI => 1
Thin INT
ALSI => 0
non-shared DSCI
tasklets scheduled
shared DSCI => 1
ALSI => 1
shared DSCI => 0
ALSI ? -> set
Thin INT
ALSI => 0
ALSI was set,
shared DSCI => 1
After that no more interrupts occur because the DSCI is still set.
Fix that race by only resetting the shared DSCI if it was actually
set so the tasklets for all shared devices are scheduled and will
run after the interrupt.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Felix Beck [Wed, 5 Jan 2011 11:47:48 +0000 (12:47 +0100)]
[S390] Handling of 4096 bit RSA keys in CRT format.
Also process 4096 bit RSA keys in CRT format. Handle them like the
smaller keys and take care of the zero padding.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Felix Beck [Wed, 5 Jan 2011 11:47:47 +0000 (12:47 +0100)]
[S390] zcrypt: cope with cca restriction of cex3
The cca on the crypto adapter has a restriction in the size of the
exponent if a key with a modulus bigger than 2048 bit is used. Thus
in that case we have to avoid that the crypto device driver thinks
the adapter is defect and sets it offline. Therfore a new member for
the zcrypt_device struct called max_exp_bit_length is introduced. This
will be set the first time the cca returns the error code function
not implemented. If this is done with an adapter twice it will return
-EINVAL.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Felix Beck [Wed, 5 Jan 2011 11:47:46 +0000 (12:47 +0100)]
[S390] zcrypt: support for 4096 bit keys for cex3c
Definitions for CEX3 card types are changed to support 4096 bit RSA
keys in the coprocessor.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Ralph Wuerthner <ralph.wuerthner@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Felix Beck [Wed, 5 Jan 2011 11:47:45 +0000 (12:47 +0100)]
[S390] zcrypt: support for 4096 bit keys for cex3a
Definitions for CEX3 card types are changed to support 4096 bit RSA
keys. Also new structs for the accelerator mode are needed.
Additionaly when checking the length of key parts, the case for bigger
(4096 bit) keys is needed.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Ralph Wuerthner <ralph.wuerthner@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Felix Beck [Wed, 5 Jan 2011 11:47:44 +0000 (12:47 +0100)]
[S390] zcrypt: Introduce check for 4096 bit support.
Implemented an asm in the ap bus and made it accessible for the card
specific parts of the zcrypt driver. Thus when a cex3a is recognized
a check can be performed to dermine whether the card supports 4096 bit
RSA keys.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Michael Holzheu [Wed, 5 Jan 2011 11:47:43 +0000 (12:47 +0100)]
[S390] hypfs: Move buffer allocation from open to read
Currently the buffer for diagnose data is allocated in the open function
of the debugfs file and is released in the close function. This has the
drawback that a user (root) can pin that memory by not closing the file.
This patch moves the buffer allocation to the read function. The buffer is
automatically released after the buffer is copied to userspace.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:42 +0000 (12:47 +0100)]
[S390] current_thread_info optimization
Use thread_info lowcore field for current_thread_info(), saves
an unnecessary calculation.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:41 +0000 (12:47 +0100)]
[S390] extint: get rid of early code plus cleanup
Get rid of register/unregister_early_external_interrupt() and clean up
the code while at it.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:40 +0000 (12:47 +0100)]
[S390] sclp: use register_external_interrupt()
Use register_external_interrupt() instead of register_early_external_interrupt().
The early variant is not necessary since kmalloc works already.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:39 +0000 (12:47 +0100)]
[S390] pfault: delay register of pfault interrupt
Use an early init call to initialize pfault. That way it is possible to
use the register_external_interrupt() instead of the early variant.
No need to enable pfault any earlier since it has only effect if user
space processes are running.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Holger Dengler [Wed, 5 Jan 2011 11:47:38 +0000 (12:47 +0100)]
[S390] ap bus: add support for irq statistics
Add support for AP Bus I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com>
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:37 +0000 (12:47 +0100)]
[S390] ctc: add support for irq statistics
Add support for CTC I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:36 +0000 (12:47 +0100)]
[S390] claw: add support for irq statistics
Add support for CLAW I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:35 +0000 (12:47 +0100)]
[S390] lcs: add support for irq statistics
Add support for LCS I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:34 +0000 (12:47 +0100)]
[S390] vmur: add support for irq statistics
Add support for VMUR I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:33 +0000 (12:47 +0100)]
[S390] tape: add support for irq statistics
Add support for ccw based tape I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:32 +0000 (12:47 +0100)]
[S390] 3270: add support for irq statistics
Add support for 3270 I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:31 +0000 (12:47 +0100)]
[S390] 3215: add support for irq statistics
Add support for 3215 I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:30 +0000 (12:47 +0100)]
[S390] dasd: add support for irq statistics
Add support for DASD I/O interrupt statistics in /proc/interrupts.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jan Glauber [Wed, 5 Jan 2011 11:47:29 +0000 (12:47 +0100)]
[S390] qdio: add qdio interrupts to interrupt statistics
Count traditional qdio interrupts and adapter interrupts for qdio
in the interrupt statistics.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:28 +0000 (12:47 +0100)]
[S390] irq: have detailed statistics for interrupt types
Up to now /proc/interrupts only has statistics for external and i/o
interrupts but doesn't split up them any further.
This patch adds a line for every single interrupt source so that it
is possible to easier tell what the machine is/was doing.
Part of the output now looks like this;
CPU0 CPU2 CPU4
EXT: 3898 4232 2305
I/O: 782 315 245
CLK: 1029 1964 727 [EXT] Clock Comparator
IPI: 2868 2267 1577 [EXT] Signal Processor
TMR: 0 0 0 [EXT] CPU Timer
TAL: 0 0 0 [EXT] Timing Alert
PFL: 0 0 0 [EXT] Pseudo Page Fault
[...]
NMI: 0 1 1 [NMI] Machine Checks
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:27 +0000 (12:47 +0100)]
[S390] time: let local_tick_enable/disable() reprogram the clock comparator
Let local_tick_enable/disable() reprogram the clock comparator so the
function names make semantically more sense.
Also that way the functions are more symmetric since normally each
local_tick_enable() call usually would have a subsequent call to
set_clock_comparator() anyway.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Wed, 5 Jan 2011 11:47:26 +0000 (12:47 +0100)]
[S390] time: move local_tick_enable()/disable() to timex.h
Move the two functions to timex.h where they make more sense than in
hardirq.h.
No functional change.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:25 +0000 (12:47 +0100)]
[S390] add kprobes annotations
Add kprobes annotations to get the massive 'probe kernel.function("*") {}'
stress test working.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:24 +0000 (12:47 +0100)]
[S390] kprobes: coding style
Correct some minor coding style issues.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:23 +0000 (12:47 +0100)]
[S390] kprobes: restructure handler function
Restructure the kprobe breakpoint handler function. Add comments to
make it more comprehensible and add a sanity check for re-entering
kprobes.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:22 +0000 (12:47 +0100)]
[S390] kprobes: jprobe save and restore
Register %r14 and %r15 are already stored in jprobe_saved_regs, no need
to store them a second time in jprobe_saved_r14 / jprobe_saved_r15.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:21 +0000 (12:47 +0100)]
[S390] kprobes: insn slots
The s390 architecture can execute code on kmalloc/vmalloc memory.
No need for the __ARCH_WANT_KPROBES_INSN_SLOT detour.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:20 +0000 (12:47 +0100)]
[S390] kprobes: activation and deactivation
Replace set_current_kprobe/reset_current_kprobe/save_previous_kprobe/
restore_previous_kprobe with a simpler scheme push_kprobe/pop_kprobe.
The mini kprobes stack can store up to two active kprobes.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:19 +0000 (12:47 +0100)]
[S390] kprobes: instruction fixup
Determine instruction fixup details in resume_execution, no need to do
it beforehand. Remove fixup, ilen and reg from arch_specific_insn.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:18 +0000 (12:47 +0100)]
[S390] kprobes: instruction swap
Move the definition of the helper structure ins_replace_args to the
only place where it is used and drop the old member as it is not needed.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:17 +0000 (12:47 +0100)]
[S390] kprobes: single step cleanup
The saved interrupt mask and the saved control registers are only
relevant while single stepping is set up. A secondary kprobe while
kprobe single stepping is active may not occur. That makes is safe
to remove the save and restore of kprobe_saved_imask / kprobe_save_ctl
from save_previous_kprobe and restore_previous_kprobe.
Move all single step related code to two functions, enable_singlestep
and disable_singlestep.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:16 +0000 (12:47 +0100)]
[S390] kprobes: single stepped breakpoint
Remove special case of a kprobe on a breakpoint while a relocated
instruction is single stepped. The only instruction that may cause
a fault while kprobe single stepping is active is the relocated
instruction. There is no kprobe on the instruction slot retrieved
with get_insn_slot().
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Wed, 5 Jan 2011 11:47:15 +0000 (12:47 +0100)]
[S390] cleanup s390 Kconfig
Make use of def_bool and def_tristate where possible and add sensible
defaults to the config symbols where applicable. This shortens the
defconfig file by another ~40 lines.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Felix Beck [Wed, 5 Jan 2011 11:46:44 +0000 (12:46 +0100)]
[S390] zcrypt: Fix check to look for facility bits 2 & 65
Fix the check for ap interupts to look for facility bits 2 and 65.
Make sure that we only register interrupts for aps, if the machine
has ap interrupt support.
This patch is relevant only for the 2.6.37 stable series.
Cc: stable@kernel.org
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Linus Torvalds [Wed, 5 Jan 2011 00:50:19 +0000 (16:50 -0800)]
Linux 2.6.37
Linus Torvalds [Tue, 4 Jan 2011 21:55:49 +0000 (13:55 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
ipv4/route.c: respect prefsrc for local routes
bridge: stp: ensure mac header is set
bridge: fix br_multicast_ipv6_rcv for paged skbs
atl1: fix oops when changing tx/rx ring params
drivers/atm/atmtcp.c: add missing atm_dev_put
starfire: Fix dma_addr_t size test for MIPS
tg3: fix return value check in tg3_read_vpd()
Broadcom CNIC core network driver: fix mem leak on allocation failures in cnic_alloc_uio_rings()
ISDN, Gigaset: Fix memory leak in do_disconnect_req()
CAN: Use inode instead of kernel address for /proc file
skfp: testing the wrong variable in skfp_driver_init()
ppp: allow disabling multilink protocol ID compression
ehea: Avoid changing vlan flags
ueagle-atm: fix PHY signal initialization race
Joel Sing [Mon, 3 Jan 2011 20:24:20 +0000 (20:24 +0000)]
ipv4/route.c: respect prefsrc for local routes
The preferred source address is currently ignored for local routes,
which results in all local connections having a src address that is the
same as the local dst address. Fix this by respecting the preferred source
address when it is provided for local routes.
This bug can be demonstrated as follows:
# ifconfig dummy0 192.168.0.1
# ip route show table local | grep local.*dummy0
local 192.168.0.1 dev dummy0 proto kernel scope host src 192.168.0.1
# ip route change table local local 192.168.0.1 dev dummy0 \
proto kernel scope host src 127.0.0.1
# ip route show table local | grep local.*dummy0
local 192.168.0.1 dev dummy0 proto kernel scope host src 127.0.0.1
We now establish a local connection and verify the source IP
address selection:
# nc -l 192.168.0.1 3128 &
# nc 192.168.0.1 3128 &
# netstat -ant | grep 192.168.0.1:3128.*EST
tcp 0 0 192.168.0.1:3128 192.168.0.1:33228 ESTABLISHED
tcp 0 0 192.168.0.1:33228 192.168.0.1:3128 ESTABLISHED
Signed-off-by: Joel Sing <jsing@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christoph Hellwig [Tue, 4 Jan 2011 06:14:24 +0000 (07:14 +0100)]
remove trim_fs method from Documentation/filesystems/Locking
The ->trim_fs has been removed meanwhile, so remove it from the documentation
as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 4 Jan 2011 00:37:01 +0000 (16:37 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: pxa: fix page table corruption on resume
ARM: it8152: add IT8152_LAST_IRQ definition to fix build error
ARM: pxa: PXA_ESERIES depends on FB_W100.
ARM: 6605/1: Add missing include "asm/memory.h"
ARM: 6540/1: Stop irqsoff trace on return to user
ARM: 6537/1: update Nomadik, U300 and Ux500 maintainers
ARM: 6536/1: Add missing SZ_{32,64,128}
ARM: fix cache-feroceon-l2 after stack based kmap_atomic()
ARM: fix cache-xsc3l2 after stack based kmap_atomic()
ARM: get rid of kmap_high_l1_vipt()
ARM: smp: avoid incrementing mm_users on CPU startup
ARM: pxa: PXA_ESERIES depends on FB_W100.
Andrew Morton [Mon, 3 Jan 2011 22:59:11 +0000 (14:59 -0800)]
arch/mn10300/kernel/irq.c: fix build
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=25702
Reported-by: Martin Ettl <ettl.martin@gmx.de>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mimi Zohar [Mon, 3 Jan 2011 22:59:10 +0000 (14:59 -0800)]
ima: fix add LSM rule bug
If security_filter_rule_init() doesn't return a rule, then not everything
is as fine as the return code implies.
This bug only occurs when the LSM (eg. SELinux) is disabled at runtime.
Adding an empty LSM rule causes ima_match_rules() to always succeed,
ignoring any remaining rules.
default IMA TCB policy:
# PROC_SUPER_MAGIC
dont_measure fsmagic=0x9fa0
# SYSFS_MAGIC
dont_measure fsmagic=0x62656572
# DEBUGFS_MAGIC
dont_measure fsmagic=0x64626720
# TMPFS_MAGIC
dont_measure fsmagic=0x01021994
# SECURITYFS_MAGIC
dont_measure fsmagic=0x73636673
< LSM specific rule >
dont_measure obj_type=var_log_t
measure func=BPRM_CHECK
measure func=FILE_MMAP mask=MAY_EXEC
measure func=FILE_CHECK mask=MAY_READ uid=0
Thus without the patch, with the boot parameters 'tcb selinux=0', adding
the above 'dont_measure obj_type=var_log_t' rule to the default IMA TCB
measurement policy, would result in nothing being measured. The patch
prevents the default TCB policy from being replaced.
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Cc: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: David Safford <safford@watson.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Russell King [Mon, 3 Jan 2011 22:55:21 +0000 (22:55 +0000)]
Merge branch 'fix' of git://git./linux/kernel/git/ycmiao/pxa-linux-2.6
Florian Westphal [Mon, 3 Jan 2011 04:16:28 +0000 (04:16 +0000)]
bridge: stp: ensure mac header is set
commit
bf9ae5386bca8836c16e69ab8fdbe46767d7452a
(llc: use dev_hard_header) removed the
skb_reset_mac_header call from llc_mac_hdr_init.
This seems fine itself, but br_send_bpdu() invokes ebtables LOCAL_OUT.
We oops in ebt_basic_match() because it assumes eth_hdr(skb) returns
a meaningful result.
Cc: acme@ghostprotocols.net
References: https://bugzilla.kernel.org/show_bug.cgi?id=24532
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 3 Jan 2011 19:51:22 +0000 (11:51 -0800)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf: Fix callchain hit bad cast on ascii display
arch/x86/oprofile/op_model_amd.c: Perform initialisation on a single CPU
watchdog: Improve initialisation error message and documentation
Linus Torvalds [Mon, 3 Jan 2011 19:50:26 +0000 (11:50 -0800)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
[media] em28xx: radio_fops should also use unlocked_ioctl
[media] wm8775: Revert changeset
fcb9757333 to avoid a regression
[media] cx25840: Prevent device probe failure due to volume control ERANGE error
Linus Torvalds [Mon, 3 Jan 2011 19:48:54 +0000 (11:48 -0800)]
Merge branch 'fixes' of git://git./linux/kernel/git/djbw/async_tx
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
dmaengine: provide dummy functions for DMA_ENGINE=n
mv_xor: fix race in tasklet function
Jan Beulich [Mon, 3 Jan 2011 15:07:02 +0000 (15:07 +0000)]
name_to_dev_t() must not call __init code
The function can't be __init itself (being called from some sysfs
handler), and hence none of the functions it calls can be either.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tomas Winkler [Mon, 3 Jan 2011 19:26:08 +0000 (11:26 -0800)]
bridge: fix br_multicast_ipv6_rcv for paged skbs
use pskb_may_pull to access ipv6 header correctly for paged skbs
It was omitted in the bridge code leading to crash in blind
__skb_pull
since the skb is cloned undonditionally we also simplify the
the exit path
this fixes bug https://bugzilla.kernel.org/show_bug.cgi?id=25202
Dec 15 14:36:40 User-PC hostapd: wlan0: STA 00:15:00:60:5d:34 IEEE 802.11: authenticated
Dec 15 14:36:40 User-PC hostapd: wlan0: STA 00:15:00:60:5d:34 IEEE 802.11: associated (aid 2)
Dec 15 14:36:40 User-PC hostapd: wlan0: STA 00:15:00:60:5d:34 RADIUS: starting accounting session
4D0608A3-
00000005
Dec 15 14:36:41 User-PC kernel: [175576.120287] ------------[ cut here ]------------
Dec 15 14:36:41 User-PC kernel: [175576.120452] kernel BUG at include/linux/skbuff.h:1178!
Dec 15 14:36:41 User-PC kernel: [175576.120609] invalid opcode: 0000 [#1] SMP
Dec 15 14:36:41 User-PC kernel: [175576.120749] last sysfs file: /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/uevent
Dec 15 14:36:41 User-PC kernel: [175576.121035] Modules linked in: approvals binfmt_misc bridge stp llc parport_pc ppdev arc4 iwlagn snd_hda_codec_realtek iwlcore i915 snd_hda_intel mac80211 joydev snd_hda_codec snd_hwdep snd_pcm snd_seq_midi drm_kms_helper snd_rawmidi drm snd_seq_midi_event snd_seq snd_timer snd_seq_device cfg80211 eeepc_wmi usbhid psmouse intel_agp i2c_algo_bit intel_gtt uvcvideo agpgart videodev sparse_keymap snd shpchp v4l1_compat lp hid video serio_raw soundcore output snd_page_alloc ahci libahci atl1c
Dec 15 14:36:41 User-PC kernel: [175576.122712]
Dec 15 14:36:41 User-PC kernel: [175576.122769] Pid: 0, comm: kworker/0:0 Tainted: G W 2.6.37-rc5-wl+ #3 1015PE/1016P
Dec 15 14:36:41 User-PC kernel: [175576.123012] EIP: 0060:[<
f83edd65>] EFLAGS:
00010283 CPU: 1
Dec 15 14:36:41 User-PC kernel: [175576.123193] EIP is at br_multicast_rcv+0xc95/0xe1c [bridge]
Dec 15 14:36:41 User-PC kernel: [175576.123362] EAX:
0000001c EBX:
f5626318 ECX:
00000000 EDX:
00000000
Dec 15 14:36:41 User-PC kernel: [175576.123550] ESI:
ec512262 EDI:
f5626180 EBP:
f60b5ca0 ESP:
f60b5bd8
Dec 15 14:36:41 User-PC kernel: [175576.123737] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Dec 15 14:36:41 User-PC kernel: [175576.123902] Process kworker/0:0 (pid: 0, ti=
f60b4000 task=
f60a8000 task.ti=
f60b0000)
Dec 15 14:36:41 User-PC kernel: [175576.124137] Stack:
Dec 15 14:36:41 User-PC kernel: [175576.124181]
ec556500 f6d06800 f60b5be8 c01087d8 ec512262 00000030 00000024 f5626180
Dec 15 14:36:41 User-PC kernel: [175576.124181]
f572c200 ef463440 f5626300 3affffff f6d06dd0 e60766a4 000000c4 f6d06860
Dec 15 14:36:41 User-PC kernel: [175576.124181]
ffffffff ec55652c 00000001 f6d06844 f60b5c64 c0138264 c016e451 c013e47d
Dec 15 14:36:41 User-PC kernel: [175576.124181] Call Trace:
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c01087d8>] ? sched_clock+0x8/0x10
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c0138264>] ? enqueue_entity+0x174/0x440
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c016e451>] ? sched_clock_cpu+0x131/0x190
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c013e47d>] ? select_task_rq_fair+0x2ad/0x730
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c0524fc1>] ? nf_iterate+0x71/0x90
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f83e4914>] ? br_handle_frame_finish+0x184/0x220 [bridge]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f83e4790>] ? br_handle_frame_finish+0x0/0x220 [bridge]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f83e46e9>] ? br_handle_frame+0x189/0x230 [bridge]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f83e4790>] ? br_handle_frame_finish+0x0/0x220 [bridge]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f83e4560>] ? br_handle_frame+0x0/0x230 [bridge]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c04ff026>] ? __netif_receive_skb+0x1b6/0x5b0
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c04f7a30>] ? skb_copy_bits+0x110/0x210
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c0503a7f>] ? netif_receive_skb+0x6f/0x80
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f82cb74c>] ? ieee80211_deliver_skb+0x8c/0x1a0 [mac80211]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f82cc836>] ? ieee80211_rx_handlers+0xeb6/0x1aa0 [mac80211]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c04ff1f0>] ? __netif_receive_skb+0x380/0x5b0
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c016e242>] ? sched_clock_local+0xb2/0x190
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c012b688>] ? default_spin_lock_flags+0x8/0x10
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c05d83df>] ? _raw_spin_lock_irqsave+0x2f/0x50
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f82cd621>] ? ieee80211_prepare_and_rx_handle+0x201/0xa90 [mac80211]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f82ce154>] ? ieee80211_rx+0x2a4/0x830 [mac80211]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f815a8d6>] ? iwl_update_stats+0xa6/0x2a0 [iwlcore]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f8499212>] ? iwlagn_rx_reply_rx+0x292/0x3b0 [iwlagn]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c05d83df>] ? _raw_spin_lock_irqsave+0x2f/0x50
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f8483697>] ? iwl_rx_handle+0xe7/0x350 [iwlagn]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
f8486ab7>] ? iwl_irq_tasklet+0xf7/0x5c0 [iwlagn]
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c01aece1>] ? __rcu_process_callbacks+0x201/0x2d0
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c0150d05>] ? tasklet_action+0xc5/0x100
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c0150a07>] ? __do_softirq+0x97/0x1d0
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c05d910c>] ? nmi_stack_correct+0x2f/0x34
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c0150970>] ? __do_softirq+0x0/0x1d0
Dec 15 14:36:41 User-PC kernel: [175576.124181] <IRQ>
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c01508f5>] ? irq_exit+0x65/0x70
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c05df062>] ? do_IRQ+0x52/0xc0
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c01036b0>] ? common_interrupt+0x30/0x38
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c03a1fc2>] ? intel_idle+0xc2/0x160
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c04daebb>] ? cpuidle_idle_call+0x6b/0x100
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c0101dea>] ? cpu_idle+0x8a/0xf0
Dec 15 14:36:41 User-PC kernel: [175576.124181] [<
c05d2702>] ? start_secondary+0x1e8/0x1ee
Cc: David Miller <davem@davemloft.net>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
J. K. Cliburn [Sat, 1 Jan 2011 05:02:12 +0000 (05:02 +0000)]
atl1: fix oops when changing tx/rx ring params
Commit
3f5a2a713aad28480d86b0add00c68484b54febc zeroes out the statistics
message block (SMB) and coalescing message block (CMB) when adapter ring
resources are freed. This is desirable behavior, but, as a side effect,
the commit leads to an oops when atl1_set_ringparam() attempts to alter
the number of rx or tx elements in the ring buffer (by using ethtool
-G, for example). We don't want SMB or CMB to change during this
operation.
Modify atl1_set_ringparam() to preserve SMB and CMB when changing ring
parameters.
Cc: stable@kernel.org
Signed-off-by: Jay Cliburn <jcliburn@gmail.com>
Reported-by: Tõnu Raitviir <jussuf@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ingo Molnar [Mon, 3 Jan 2011 18:59:24 +0000 (19:59 +0100)]
Merge branch 'perf/urgent' of git://git./linux/kernel/git/frederic/random-tracing into perf/urgent
Aric D. Blumer [Wed, 29 Dec 2010 16:18:29 +0000 (11:18 -0500)]
ARM: pxa: fix page table corruption on resume
Before this patch, the following error would sometimes occur after a
resume on pxa3xx:
/path/to/mm/memory.c:144: bad pmd
8040542e.
The problem was that a temporary page table mapping was being improperly
restored.
The PXA3xx resume code creates a temporary mapping of resume_turn_on_mmu
to avoid a prefetch abort. The pxa3xx_resume_after_mmu code requires
that the r1 register holding the address of this mapping not be
modified, however, resume_turn_on_mmu does modify it. It is mostly
correct in that r1 receives the base table address, but it may also
get other bits in 13:0. This results in pxa3xx_resume_after_mmu
restoring the original mapping to the wrong place, corrupting memory
and leaving the temporary mapping in place.
Signed-off-by: Matt Reimer <mreimer@sdgsystems.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Mike Rapoport [Wed, 29 Dec 2010 07:06:26 +0000 (09:06 +0200)]
ARM: it8152: add IT8152_LAST_IRQ definition to fix build error
The commit
6ac6b817f3f4c23c5febd960d8deb343e13af5f3 (ARM: pxa: encode
IRQ number into .nr_irqs) removed definition of ITE_LAST_IRQ which
caused the following build error:
CC arch/arm/common/it8152.o
arch/arm/common/it8152.c: In function 'it8152_init_irq':
arch/arm/common/it8152.c:86: error: 'IT8152_LAST_IRQ' undeclared (first use in this function)
arch/arm/common/it8152.c:86: error: (Each undeclared identifier is reported only once
arch/arm/common/it8152.c:86: error: for each function it appears in.)
make[2]: *** [arch/arm/common/it8152.o] Error 1
Defining the IT8152_LAST_IRQ in the arch/arm/include/hardware/it8152.c
fixes the build.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Lennert Buytenhek [Tue, 14 Dec 2010 23:20:16 +0000 (07:20 +0800)]
ARM: pxa: PXA_ESERIES depends on FB_W100.
As arch/arm/mach-pxa/eseries.c references w100fb_gpio_{read,write}()
directly.
Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Frederic Weisbecker [Mon, 3 Jan 2011 15:13:11 +0000 (16:13 +0100)]
perf: Fix callchain hit bad cast on ascii display
ipchain__fprintf_graph() casts the number of hits in a branch as an
int, which means we lose its highests bits.
This results in meaningless number of callchain hits in perf.data
that have a high number of hits recorded, typically those that have
callchain branches hits appearing more than INT_MAX. This happens
easily as those are pondered by the event period.
Reported-by: Nick Piggin <npiggin@kernel.dk>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Robert Richter [Mon, 3 Jan 2011 11:15:14 +0000 (12:15 +0100)]
arch/x86/oprofile/op_model_amd.c: Perform initialisation on a single CPU
Disable preemption in init_ibs(). The function only checks the
ibs capabilities and sets up pci devices (if necessary). It runs
only on one cpu but operates with the local APIC and some MSRs,
thus it is better to disable preemption.
[ 7.034377] BUG: using smp_processor_id() in preemptible [
00000000] code: modprobe/483
[ 7.034385] caller is setup_APIC_eilvt+0x155/0x180
[ 7.034389] Pid: 483, comm: modprobe Not tainted 2.6.37-rc1-
20101110+ #1
[ 7.034392] Call Trace:
[ 7.034400] [<
ffffffff812a2b72>] debug_smp_processor_id+0xd2/0xf0
[ 7.034404] [<
ffffffff8101e985>] setup_APIC_eilvt+0x155/0x180
[ ... ]
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=22812
Reported-by: <atswartz@gmail.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: oprofile-list@lists.sourceforge.net <oprofile-list@lists.sourceforge.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@kernel.org> [2.6.37.x]
LKML-Reference: <
20110103111514.GM4739@erda.amd.com>
[ small cleanups ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Hans Verkuil [Sat, 18 Dec 2010 12:59:51 +0000 (09:59 -0300)]
[media] em28xx: radio_fops should also use unlocked_ioctl
em28xx uses core assisted locking, so it shouldn't use .ioctl.
The .ioctl callback was replaced by .unlocked_ioctl for video nodes,
but not for radio nodes. This is now corrected.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Mauro Carvalho Chehab [Mon, 3 Jan 2011 11:09:56 +0000 (09:09 -0200)]
[media] wm8775: Revert changeset
fcb9757333 to avoid a regression
It seems that cx88 and ivtv use wm8775 on some different modes. The
patch that added support for a board with wm8775 broke ivtv boards with
this device. As we're too close to release 2.6.37, let's just revert
it.
Reported-by: Andy Walls <awalls@md.metrocast.net>
Reported-by: Eric Sharkey <eric@lisaneric.org>
Reported-by: Auric <auric@aanet.com.au>
Reported by: David Gesswein <djg@pdp8online.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Andy Walls [Sun, 5 Dec 2010 22:42:30 +0000 (19:42 -0300)]
[media] cx25840: Prevent device probe failure due to volume control ERANGE error
This patch fixes a regression that crept into 2.6.36.
The volume control scale in the cx25840 driver has an unusual mapping
from register values to v4l2 volume control values. Enforce the mapping
limits, so that the default volume control setting does not fall out of
bounds to prevent the cx25840 module device probe from failing.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Guennadi Liakhovetski [Wed, 22 Dec 2010 13:46:46 +0000 (14:46 +0100)]
dmaengine: provide dummy functions for DMA_ENGINE=n
This lets drivers, optionally using the dmaengine, build with DMA_ENGINE
unselected.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Saeed Bishara [Tue, 21 Dec 2010 14:53:39 +0000 (16:53 +0200)]
mv_xor: fix race in tasklet function
use mv_xor_slot_cleanup() instead of __mv_xor_slot_cleanup() as the former function
aquires the spin lock that needed to protect the drivers data.
Cc: <stable@kernel.org>
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Axel Lin [Mon, 3 Jan 2011 01:26:53 +0000 (02:26 +0100)]
ARM: 6605/1: Add missing include "asm/memory.h"
This patch fixes below build error by adding the missing asm/memory.h,
which is needed for arch_is_coherent().
$ make pxa3xx_defconfig; make
CC init/do_mounts_rd.o
In file included from include/linux/list_bl.h:5,
from include/linux/rculist_bl.h:7,
from include/linux/dcache.h:7,
from include/linux/fs.h:381,
from init/do_mounts_rd.c:3:
include/linux/bit_spinlock.h: In function 'bit_spin_unlock':
include/linux/bit_spinlock.h:61: error: implicit declaration of function 'arch_is_coherent'
make[1]: *** [init/do_mounts_rd.o] Error 1
make: *** [init] Error 2
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Ben Hutchings [Sun, 2 Jan 2011 23:02:42 +0000 (23:02 +0000)]
watchdog: Improve initialisation error message and documentation
The error message 'NMI watchdog failed to create perf event...'
does not make it clear that this is a fatal error for the
watchdog. It also currently prints the error value as a
pointer, rather than extracting the error code with PTR_ERR().
Fix that.
Add a note to the description of the 'nowatchdog' kernel
parameter to associate it with this message.
Reported-by: Cesare Leonardi <celeonar@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: 599368@bugs.debian.org
Cc: 608138@bugs.debian.org
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: <stable@kernel.org> # .37.x and later
LKML-Reference: <
1294009362.3167.126.camel@localhost>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Maurus Cuelenaere [Sun, 2 Jan 2011 19:48:16 +0000 (14:48 -0500)]
hwmon: (s3c-hwmon) Fix compilation
The owner field was removed from struct attribute in
6fd69dc578fa0b1bbc3aad70ae3af9a137211707, so don't assign it anymore.
Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Linus Torvalds [Sun, 2 Jan 2011 18:44:21 +0000 (10:44 -0800)]
Merge branch 'kvm-updates/2.6.37' of git://git./virt/kvm/kvm
* 'kvm-updates/2.6.37' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: i8259: initialize isr_ack
KVM: MMU: Fix incorrect direct gfn for unpaged mode shadow
Linus Torvalds [Sun, 2 Jan 2011 18:43:51 +0000 (10:43 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: hda: Use LPIB quirk for Dell Inspiron m101z/1120
sound: Prevent buffer overflow in OSS load_mixer_volumes
ASoC: codecs: wm8753: Fix register cache incoherency
ASoC: codecs: wm9090: Fix register cache incoherency
ASoC: codecs: wm8962: Fix register cache incoherency
ASoC: codecs: wm8955: Fix register cache incoherency
ASoC: codecs: wm8904: Fix register cache incoherency
ASoC: codecs: wm8741: Fix register cache incoherency
ASoC: codecs: wm8523: Fix register cache incoherency
ASoC: codecs: max98088: Fix register cache incoherency
ASoC: codecs: Add missing control_type initialization
Linus Torvalds [Sun, 2 Jan 2011 18:37:19 +0000 (10:37 -0800)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild-2.6
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
kconfig: fix undesirable side effect of adding "visible" menu attribute
Takashi Iwai [Sun, 2 Jan 2011 10:01:55 +0000 (11:01 +0100)]
Merge branch 'fix/asoc' into for-linus
Avi Kivity [Fri, 31 Dec 2010 08:52:15 +0000 (10:52 +0200)]
KVM: i8259: initialize isr_ack
isr_ack is never initialized. So, until the first PIC reset, interrupts
may fail to be injected. This can cause Windows XP to fail to boot, as
reported in the fallout from the fix to
https://bugzilla.kernel.org/show_bug.cgi?id=21962.
Reported-and-tested-by: Nicolas Prochazka <prochazka.nicolas@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Julia Lawall [Wed, 29 Dec 2010 04:01:03 +0000 (04:01 +0000)]
drivers/atm/atmtcp.c: add missing atm_dev_put
The earlier call to atm_dev_lookup increases the reference count of dev,
so decrease it on the way out.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x, E;
constant C;
@@
x = atm_dev_lookup(...);
... when != false x != NULL
when != true x == NULL
when != \(E = x\|x = E\)
when != atm_dev_put(dev);
*return -C;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Wed, 29 Dec 2010 04:26:17 +0000 (04:26 +0000)]
starfire: Fix dma_addr_t size test for MIPS
Commit 56543af "starfire: use BUILD_BUG_ON for netdrv_addr_t" revealed
that the preprocessor condition used to find the size of dma_addr_t
yielded the wrong result for some architectures and configurations.
This was kluged for 64-bit PowerPC in commit 3e502e6 by adding yet
another case to the condition. However, 64-bit MIPS configurations
are not detected reliably either.
This should be fixed by using CONFIG_ARCH_DMA_ADDR_T_64BIT, but that
isn't yet defined everywhere it should be.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Sterba [Wed, 29 Dec 2010 03:40:31 +0000 (03:40 +0000)]
tg3: fix return value check in tg3_read_vpd()
Besides -ETIMEDOUT and -EINTR, pci_read_vpd may return other error
values like -ENODEV or -EINVAL which are ignored due to the buggy
check, but the data are not read from VPD anyway and this is checked
subsequently with at most 3 needless loop iterations. This does not
show up as a runtime bug.
CC: Matt Carlson <mcarlson@broadcom.com>
CC: Michael Chan <mchan@broadcom.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesper Juhl [Fri, 31 Dec 2010 19:18:48 +0000 (11:18 -0800)]
Broadcom CNIC core network driver: fix mem leak on allocation failures in cnic_alloc_uio_rings()
We are leaking memory in drivers/net/cnic.c::cnic_alloc_uio_rings() if
either of the calls to dma_alloc_coherent() fail. This patch fixes it by
freeing both the memory allocated with kzalloc() and memory allocated with
previous calls to dma_alloc_coherent() when there's a failure.
Thanks to Joe Perches <joe@perches.com> for suggesting a better
implementation than my initial version.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesper Juhl [Sun, 26 Dec 2010 09:59:58 +0000 (09:59 +0000)]
ISDN, Gigaset: Fix memory leak in do_disconnect_req()
Hi,
In drivers/isdn/gigaset/capi.c::do_disconnect_req() we will leak the
memory allocated (with kmalloc) to 'b3cmsg' if the call to alloc_skb()
fails.
...
b3cmsg = kmalloc(sizeof(*b3cmsg), GFP_KERNEL);
allocation here ------^
if (!b3cmsg) {
dev_err(cs->dev, "%s: out of memory\n", __func__);
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
return;
}
capi_cmsg_header(b3cmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND,
ap->nextMessageNumber++,
cmsg->adr.adrPLCI | (1 << 16));
b3cmsg->Reason_B3 = CapiProtocolErrorLayer1;
b3skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_KERNEL);
if (b3skb == NULL) {
dev_err(cs->dev, "%s: out of memory\n", __func__);
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
return;
leak here ------^
...
This leak is easily fixed by just kfree()'ing the memory allocated to
'b3cmsg' right before we return. The following patch does that.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Rosenberg [Sun, 26 Dec 2010 06:54:53 +0000 (06:54 +0000)]
CAN: Use inode instead of kernel address for /proc file
Since the socket address is just being used as a unique identifier, its
inode number is an alternative that does not leak potentially sensitive
information.
CC-ing stable because MITRE has assigned CVE-2010-4565 to the issue.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 30 Dec 2010 20:09:26 +0000 (12:09 -0800)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
drm/i915/dvo: Report LVDS attached to ch701x as connected
Revert "drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks"
drm/i915: Verify Ironlake eDP presence on DP_A using the capability fuse
drm/i915, intel_ips: When i915 loads after IPS, make IPS relink to i915.
drm/i915/sdvo: Add hdmi connector properties after initing the connector
drm/i915: Set the required VFMUNIT clock gating disable on Ironlake.
Nitin Gupta [Thu, 30 Dec 2010 09:07:58 +0000 (04:07 -0500)]
Revert "Staging: zram: work around oops due to startup ordering snafu"
This reverts commit
7e24cce38a99f373450db67bf576fe73e8168d66 because it
was never appropriate for mainline.
Do not check for init flag before starting I/O - zram module is unusable
without this fix.
The oops mentioned in the reverted commit message was actually a problem
only with the zram version as present in project's own repository where
we allocate struct zram_stats_cpu upon device initialization. OTOH, In
mainline/staging version of zram, we allocate struct stats upfront, so
this oops cannot happen in mainline version.
Checking for init_done flag in zram_make_request() results in a *no-op*
for any I/O operation since we simply always return success. This flag
is actually set when the first write occurs on a zram disk which
triggers its initialization.
Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=25722
Reported-by: Dennis Jansen <dennis.jansen@web.de>
Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 30 Dec 2010 18:07:44 +0000 (10:07 -0800)]
Merge branch 'merge-spi' of git://git.secretlab.ca/git/linux-2.6
* 'merge-spi' of git://git.secretlab.ca/git/linux-2.6:
spi/m68knommu: Coldfire QSPI platform support
spi/omap2_mcspi.c: Force CS to be in inactive state after off-mode transition
KAMEZAWA Hiroyuki [Wed, 29 Dec 2010 22:07:11 +0000 (14:07 -0800)]
memcg: fix wrong VM_BUG_ON() in try_charge()'s mm->owner check
At __mem_cgroup_try_charge(), VM_BUG_ON(!mm->owner) is checked.
But as commented in mem_cgroup_from_task(), mm->owner can be NULL
in some racy case. This check of VM_BUG_ON() is bad.
A possible story to hit this is at swapoff()->try_to_unuse(). It passes
mm_struct to mem_cgroup_try_charge_swapin() while mm->owner is NULL. If we
can't get proper mem_cgroup from swap_cgroup information, mm->owner is used
as charge target and we see NULL.
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reported-by: Hugh Dickins <hughd@google.com>
Reported-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christoph Hellwig [Thu, 16 Dec 2010 11:04:54 +0000 (12:04 +0100)]
update Documentation/filesystems/Locking
Mostly inspired by all the recent BKL removal changes, but a lot of older
updates also weren't properly recorded.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chris Wilson [Thu, 30 Dec 2010 12:54:00 +0000 (12:54 +0000)]
drm/i915/dvo: Report LVDS attached to ch701x as connected
As we have already detected something attached to the chip during
initialisation, always report the LVDS connector status as connected
during probing.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Thu, 30 Dec 2010 09:07:15 +0000 (09:07 +0000)]
Revert "drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks"
As I feared, whilst this fixed the clocks for the Lenovo U160, it broke
many other machines. So lets reverts commit
448f53a1ede54eb854d036abf
and search for the real bug.
Reported-and-tested-by: Travis Hume <travis@computoring.org> [et al]
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=25842
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32698
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>