platform/kernel/linux-amlogic.git
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Sun, 28 Dec 2008 20:33:59 +0000 (12:33 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (26 commits)
  IB/mlx4: Set ownership bit correctly when copying CQEs during CQ resize
  RDMA/nes: Remove tx_free_list
  RDMA/cma: Add IPv6 support
  RDMA/addr: Add support for translating IPv6 addresses
  mlx4_core: Delete incorrect comment
  mlx4_core: Add support for multiple completion event vectors
  IB/iser: Avoid recv buffer exhaustion caused by unexpected PDUs
  IB/ehca: Remove redundant test of vpage
  IB/ehca: Replace modulus operations in flush error completion path
  IB/ipath: Add locking for interrupt use of ipath_pd contexts vs free
  IB/ipath: Fix spi_pioindex value
  IB/ipath: Only do 1X workaround on rev1 chips
  IB/ipath: Don't count IB symbol and link errors unless link is UP
  IB/ipath: Check return value of dma_map_single()
  IB/ipath: Fix PSN of send WQEs after an RDMA read resend
  RDMA/nes: Cleanup warnings
  RDMA/nes: Add loopback check to make_cm_node()
  RDMA/nes: Check cqp_avail_reqs is empty after locking the list
  RDMA/nes: Fix TCP compliance test failures
  RDMA/nes: Forward packets for a new connection with stale APBVT entry
  ...

15 years agoMerge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Sun, 28 Dec 2008 20:33:21 +0000 (12:33 -0800)]
Merge branch 'for-linus' of git://git390.osdl.marist.edu/linux-2.6

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (85 commits)
  [S390] provide documentation for hvc_iucv kernel parameter.
  [S390] convert ctcm printks to dev_xxx and pr_xxx macros.
  [S390] convert zfcp printks to pr_xxx macros.
  [S390] convert vmlogrdr printks to pr_xxx macros.
  [S390] convert zfcp dumper printks to pr_xxx macros.
  [S390] convert cpu related printks to pr_xxx macros.
  [S390] convert qeth printks to dev_xxx and pr_xxx macros.
  [S390] convert sclp printks to pr_xxx macros.
  [S390] convert iucv printks to dev_xxx and pr_xxx macros.
  [S390] convert ap_bus printks to pr_xxx macros.
  [S390] convert dcssblk and extmem printks messages to pr_xxx macros.
  [S390] convert monwriter printks to pr_xxx macros.
  [S390] convert s390 debug feature printks to pr_xxx macros.
  [S390] convert monreader printks to pr_xxx macros.
  [S390] convert appldata printks to pr_xxx macros.
  [S390] convert setup printks to pr_xxx macros.
  [S390] convert hypfs printks to pr_xxx macros.
  [S390] convert time printks to pr_xxx macros.
  [S390] convert cpacf printks to pr_xxx macros.
  [S390] convert cio printks to pr_xxx macros.
  ...

15 years agoMerge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Dec 2008 20:27:58 +0000 (12:27 -0800)]
Merge branch 'sched-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
  sched: fix warning in fs/proc/base.c
  schedstat: consolidate per-task cpu runtime stats
  sched: use RCU variant of list traversal in for_each_leaf_rt_rq()
  sched, cpuacct: export percpu cpuacct cgroup stats
  sched, cpuacct: refactoring cpuusage_read / cpuusage_write
  sched: optimize update_curr()
  sched: fix wakeup preemption clock
  sched: add missing arch_update_cpu_topology() call
  sched: let arch_update_cpu_topology indicate if topology changed
  sched: idle_balance() does not call load_balance_newidle()
  sched: fix sd_parent_degenerate on non-numa smp machine
  sched: add uid information to sched_debug for CONFIG_USER_SCHED
  sched: move double_unlock_balance() higher
  sched: update comment for move_task_off_dead_cpu
  sched: fix inconsistency when redistribute per-cpu tg->cfs_rq shares
  sched/rt: removed unneeded defintion
  sched: add hierarchical accounting to cpu accounting controller
  sched: include group statistics in /proc/sched_debug
  sched: rename SCHED_NO_NO_OMIT_FRAME_POINTER => SCHED_OMIT_FRAME_POINTER
  sched: clean up SCHED_CPUMASK_ALLOC
  ...

15 years agoMerge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Dec 2008 20:21:10 +0000 (12:21 -0800)]
Merge branch 'tracing-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (241 commits)
  sched, trace: update trace_sched_wakeup()
  tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3
  Revert "x86: disable X86_PTRACE_BTS"
  ring-buffer: prevent false positive warning
  ring-buffer: fix dangling commit race
  ftrace: enable format arguments checking
  x86, bts: memory accounting
  x86, bts: add fork and exit handling
  ftrace: introduce tracing_reset_online_cpus() helper
  tracing: fix warnings in kernel/trace/trace_sched_switch.c
  tracing: fix warning in kernel/trace/trace.c
  tracing/ring-buffer: remove unused ring_buffer size
  trace: fix task state printout
  ftrace: add not to regex on filtering functions
  trace: better use of stack_trace_enabled for boot up code
  trace: add a way to enable or disable the stack tracer
  x86: entry_64 - introduce FTRACE_ frame macro v2
  tracing/ftrace: add the printk-msg-only option
  tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp()
  x86, bts: correctly report invalid bts records
  ...

Fixed up trivial conflict in scripts/recordmcount.pl due to SH bits
being already partly merged by the SH merge.

15 years agoMerge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Dec 2008 20:07:57 +0000 (12:07 -0800)]
Merge branch 'x86-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (246 commits)
  x86: traps.c replace #if CONFIG_X86_32 with #ifdef CONFIG_X86_32
  x86: PAT: fix address types in track_pfn_vma_new()
  x86: prioritize the FPU traps for the error code
  x86: PAT: pfnmap documentation update changes
  x86: PAT: move track untrack pfnmap stubs to asm-generic
  x86: PAT: remove follow_pfnmap_pte in favor of follow_phys
  x86: PAT: modify follow_phys to return phys_addr prot and return value
  x86: PAT: clarify is_linear_pfn_mapping() interface
  x86: ia32_signal: remove unnecessary declaration
  x86: common.c boot_cpu_stack and boot_exception_stacks should be static
  x86: fix intel x86_64 llc_shared_map/cpu_llc_id anomolies
  x86: fix warning in arch/x86/kernel/microcode_amd.c
  x86: ia32.h: remove unused struct sigfram32 and rt_sigframe32
  x86: asm-offset_64: use rt_sigframe_ia32
  x86: sigframe.h: include headers for dependency
  x86: traps.c declare functions before they get used
  x86: PAT: update documentation to cover pgprot and remap_pfn related changes - v3
  x86: PAT: add pgprot_writecombine() interface for drivers - v3
  x86: PAT: change pgprot_noncached to uc_minus instead of strong uc - v3
  x86: PAT: implement track/untrack of pfnmap regions for x86 - v3
  ...

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Sun, 28 Dec 2008 19:43:54 +0000 (11:43 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (105 commits)
  SELinux: don't check permissions for kernel mounts
  security: pass mount flags to security_sb_kern_mount()
  SELinux: correctly detect proc filesystems of the form "proc/foo"
  Audit: Log TIOCSTI
  user namespaces: document CFS behavior
  user namespaces: require cap_set{ug}id for CLONE_NEWUSER
  user namespaces: let user_ns be cloned with fairsched
  CRED: fix sparse warnings
  User namespaces: use the current_user_ns() macro
  User namespaces: set of cleanups (v2)
  nfsctl: add headers for credentials
  coda: fix creds reference
  capabilities: define get_vfs_caps_from_disk when file caps are not enabled
  CRED: Allow kernel services to override LSM settings for task actions
  CRED: Add a kernel_service object class to SELinux
  CRED: Differentiate objective and effective subjective credentials on a task
  CRED: Documentation
  CRED: Use creds in file structs
  CRED: Prettify commoncap.c
  CRED: Make execve() take advantage of copy-on-write credentials
  ...

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Sun, 28 Dec 2008 19:43:22 +0000 (11:43 -0800)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (57 commits)
  crypto: aes - Precompute tables
  crypto: talitos - Ack done interrupt in isr instead of tasklet
  crypto: testmgr - Correct comment about deflate parameters
  crypto: salsa20 - Remove private wrappers around various operations
  crypto: des3_ede - permit weak keys unless REQ_WEAK_KEY set
  crypto: sha512 - Switch to shash
  crypto: sha512 - Move message schedule W[80] to static percpu area
  crypto: michael_mic - Switch to shash
  crypto: wp512 - Switch to shash
  crypto: tgr192 - Switch to shash
  crypto: sha256 - Switch to shash
  crypto: md5 - Switch to shash
  crypto: md4 - Switch to shash
  crypto: sha1 - Switch to shash
  crypto: rmd320 - Switch to shash
  crypto: rmd256 - Switch to shash
  crypto: rmd160 - Switch to shash
  crypto: rmd128 - Switch to shash
  crypto: null - Switch to shash
  crypto: hash - Make setkey optional
  ...

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sun, 28 Dec 2008 19:41:32 +0000 (11:41 -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: (367 commits)
  ALSA: ASoC: fix a typo in omp-pcm.c
  ASoC: Fix DSP formats in SSM2602 audio codec
  ASoC: Fix incorrect DSP format in OMAP McBSP DAI and affected drivers
  ALSA: hda: fix incorrect mixer index values for 92hd83xx
  ALSA: hda: dinput_mux check
  ALSA: hda - Add quirk for another HP dv7
  ALSA: ASoC - Add missing __devexit annotation to wm8350.c
  ALSA: ASoc: DaVinci: davinci-evm use dsp_b mode
  ALSA: ASoC: DaVinci: i2s, evm, pass same value to codec and cpu_dai
  ALSA: ASoC: tlv320aic3x add dsp_a
  ALSA: ASoC: DaVinci: document I2S limitations
  ALSA: ASoC: DaVinci: davinci-i2s clean up
  ALSA: ASoC: DaVinci: davinci-i2s clean up
  ALSA: ASoC: DaVinci: davinci-i2s add comments to explain polarity
  ALSA: ASoC: DaVinci: davinvi-evm, make requests explicit
  ALSA: ca0106 - disable 44.1kHz capture
  ALSA: ca0106 - Add missing card->private_data initialization
  ALSA: ca0106 - Check ac97 availability at PM
  ALSA: hda - Power up always when no jack detection is available
  ALSA: hda - Fix unused variable warnings in patch_sigmatel.c
  ...

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
Linus Torvalds [Sun, 28 Dec 2008 19:39:19 +0000 (11:39 -0800)]
Merge git://git./linux/kernel/git/lethal/sh-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (132 commits)
  sh: oprofile: Fix up the module build.
  sh: add UIO support for JPU on SH7722.
  serial: sh-sci: Fix up port pinmux for SH7366.
  sh: mach-rsk: Use uImage generation by default for rsk7201/7203.
  sh: mach-sh03: Fix up pata_platform build breakage.
  sh: enable deferred io LCDC on Migo-R
  video: sh_mobile_lcdcfb deferred io support
  video: deferred io with physically contiguous memory
  video: deferred io cleanup
  video: fix deferred io fsync()
  sh: add LCDC interrupt configuration to AP325 and Migo-R
  sh_mobile_lcdc: use FB_SYS helpers instead of FB_CFB
  sh: split coherent pages
  sh: dma: Kill off ISA DMA wrapper.
  sh: Conditionalize the code dumper on CONFIG_DUMP_CODE.
  sh: Kill off the unused SH_ALPHANUMERIC debug option.
  sh: Enable skipping of bss on debug platforms for sh32 also.
  doc: Update sh cpufreq documentation.
  sh: mrshpc_setup_windows() needs to be inline.
  serial: sh-sci: sci_poll_get_char() is only used by CONFIG_CONSOLE_POLL.
  ...

15 years agoMerge branch 'sched/urgent'; commit 'v2.6.28' into sched/core
Ingo Molnar [Thu, 25 Dec 2008 12:42:23 +0000 (13:42 +0100)]
Merge branch 'sched/urgent'; commit 'v2.6.28' into sched/core

15 years ago[S390] provide documentation for hvc_iucv kernel parameter.
Hendrik Brueckner [Thu, 25 Dec 2008 12:39:55 +0000 (13:39 +0100)]
[S390] provide documentation for hvc_iucv kernel parameter.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert ctcm printks to dev_xxx and pr_xxx macros.
Peter Tiedemann [Thu, 25 Dec 2008 12:39:54 +0000 (13:39 +0100)]
[S390] convert ctcm printks to dev_xxx and pr_xxx macros.

Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert zfcp printks to pr_xxx macros.
Christof Schmitt [Thu, 25 Dec 2008 12:39:53 +0000 (13:39 +0100)]
[S390] convert zfcp printks to pr_xxx macros.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert vmlogrdr printks to pr_xxx macros.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:52 +0000 (13:39 +0100)]
[S390] convert vmlogrdr printks to pr_xxx macros.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert zfcp dumper printks to pr_xxx macros.
Michael Holzheu [Thu, 25 Dec 2008 12:39:51 +0000 (13:39 +0100)]
[S390] convert zfcp dumper printks to pr_xxx macros.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert cpu related printks to pr_xxx macros.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:50 +0000 (13:39 +0100)]
[S390] convert cpu related printks to pr_xxx macros.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert qeth printks to dev_xxx and pr_xxx macros.
Frank Blaschka [Thu, 25 Dec 2008 12:39:49 +0000 (13:39 +0100)]
[S390] convert qeth printks to dev_xxx and pr_xxx macros.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert sclp printks to pr_xxx macros.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:48 +0000 (13:39 +0100)]
[S390] convert sclp printks to pr_xxx macros.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert iucv printks to dev_xxx and pr_xxx macros.
Ursula Braun [Thu, 25 Dec 2008 12:39:47 +0000 (13:39 +0100)]
[S390] convert iucv printks to dev_xxx and pr_xxx macros.

Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert ap_bus printks to pr_xxx macros.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:46 +0000 (13:39 +0100)]
[S390] convert ap_bus printks to pr_xxx macros.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert dcssblk and extmem printks messages to pr_xxx macros.
Hongjie Yang [Thu, 25 Dec 2008 12:39:45 +0000 (13:39 +0100)]
[S390] convert dcssblk and extmem printks messages to pr_xxx macros.

Signed-off-by: Hongjie Yang <hongjie@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert monwriter printks to pr_xxx macros.
Melissa Howland [Thu, 25 Dec 2008 12:39:44 +0000 (13:39 +0100)]
[S390] convert monwriter printks to pr_xxx macros.

Signed-off-by: Melissa Howland <melissah@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert s390 debug feature printks to pr_xxx macros.
Michael Holzheu [Thu, 25 Dec 2008 12:39:43 +0000 (13:39 +0100)]
[S390] convert s390 debug feature printks to pr_xxx macros.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert monreader printks to pr_xxx macros.
Gerald Schaefer [Thu, 25 Dec 2008 12:39:42 +0000 (13:39 +0100)]
[S390] convert monreader printks to pr_xxx macros.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert appldata printks to pr_xxx macros.
Gerald Schaefer [Thu, 25 Dec 2008 12:39:41 +0000 (13:39 +0100)]
[S390] convert appldata printks to pr_xxx macros.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert setup printks to pr_xxx macros.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:40 +0000 (13:39 +0100)]
[S390] convert setup printks to pr_xxx macros.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert hypfs printks to pr_xxx macros.
Michael Holzheu [Thu, 25 Dec 2008 12:39:39 +0000 (13:39 +0100)]
[S390] convert hypfs printks to pr_xxx macros.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert time printks to pr_xxx macros.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:38 +0000 (13:39 +0100)]
[S390] convert time printks to pr_xxx macros.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert cpacf printks to pr_xxx macros.
Jan Glauber [Thu, 25 Dec 2008 12:39:37 +0000 (13:39 +0100)]
[S390] convert cpacf printks to pr_xxx macros.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert cio printks to pr_xxx macros.
Michael Ernst [Thu, 25 Dec 2008 12:39:36 +0000 (13:39 +0100)]
[S390] convert cio printks to pr_xxx macros.

Signed-off-by: Michael Ernst <mernst@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert vmur printks to pr_xxx macros.
Frank Munzert [Thu, 25 Dec 2008 12:39:35 +0000 (13:39 +0100)]
[S390] convert vmur printks to pr_xxx macros.

Signed-off-by: Frank Munzert <munzert@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert cpcmd printks to pr_xxx macros.
Christian Borntraeger [Thu, 25 Dec 2008 12:39:34 +0000 (13:39 +0100)]
[S390] convert cpcmd printks to pr_xxx macros.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert lcs printks to dev_xxx and pr_xxx macros.
Klaus-D. Wacker [Thu, 25 Dec 2008 12:39:33 +0000 (13:39 +0100)]
[S390] convert lcs printks to dev_xxx and pr_xxx macros.

Signed-off-by: Klaus-D. Wacker <kdwacker@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert vmcp printks to pr_xxx macros.
Christian Borntraeger [Thu, 25 Dec 2008 12:39:32 +0000 (13:39 +0100)]
[S390] convert vmcp printks to pr_xxx macros.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert xpram printks to pr_xxx macros.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:31 +0000 (13:39 +0100)]
[S390] convert xpram printks to pr_xxx macros.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] s390: Remove redundant test
Julia Lawall [Thu, 25 Dec 2008 12:39:30 +0000 (13:39 +0100)]
[S390] s390: Remove redundant test

The loop above the modified code only terminates when rc is a valid pointer.

A simplified version of the semantic patch that makes this change is as
follows: (http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
expression E;
position p1,p2;
@@

if (x@p1 == NULL || ...) { ... when forall
   return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
x@p2 == NULL
|
x@p2 != NULL
)

// another path to the test that is not through p1?
@s exists@
local idexpression r.x;
position r.p1,r.p2;
@@

... when != x@p1
(
x@p2 == NULL
|
x@p2 != NULL
)

@fix depends on !s@
position r.p1,r.p2;
expression x,E;
statement S1,S2;
@@

(
- if ((x@p2 != NULL) || ...)
  S1
|
- if ((x@p2 == NULL) && ...) S1
|
- BUG_ON(x@p2 == NULL);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] s390/setup: set default preferred console device "ttyS"
Hendrik Brueckner [Thu, 25 Dec 2008 12:39:29 +0000 (13:39 +0100)]
[S390] s390/setup: set default preferred console device "ttyS"

This patch sets the default console device for s390.

The console= kernel parameter can be still used to switch the preferred
console to some other device. In that case, console messages are also
printed on the default console device (ttyS0).

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] drivers/s390/crypto: Move dereference to after IS_ERR test
Julia Lawall [Thu, 25 Dec 2008 12:39:28 +0000 (13:39 +0100)]
[S390] drivers/s390/crypto: Move dereference to after IS_ERR test

If reply is ERR_PTR(...), then it should not be dereferenced, so I have
moved the dereference from the declaration to after the IS_ERR test.

The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@match exists@
expression x, E;
identifier fld;
position p1,p2;
@@

(
x = E;
|
x = E
|
x@p1->fld
... when != x = E
IS_ERR(x@p2)
... when any
)

@other_match exists@
expression match.x, E1, E2;
position match.p1,match.p2;
@@

x = E1
... when != x = E2
    when != x@p1
x@p2

@ script:python depends on !other_match@
p1 << match.p1;
p2 << match.p2;
@@

print "* file %s dereference %s test %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] panic_stack leak in smp_alloc_lowcore
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:27 +0000 (13:39 +0100)]
[S390] panic_stack leak in smp_alloc_lowcore

Fix freeing of the panic_stack if the allocation of async_stack failed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] clear_table inline assembly contraints
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:26 +0000 (13:39 +0100)]
[S390] clear_table inline assembly contraints

Tell the compile that the clear_table inline assembly writes to the
memory referenced by *s.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] Remove config options.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:25 +0000 (13:39 +0100)]
[S390] Remove config options.

On s390 we always want to run with precise cputime accounting.
Remove the config options VIRT_TIMER and VIRT_CPU_ACCOUNTING.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cpu topology: remove dead code
Heiko Carstens [Thu, 25 Dec 2008 12:39:24 +0000 (13:39 +0100)]
[S390] cpu topology: remove dead code

Interrupts haven't been implemented. So remove the dead code.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cpu topology: introduce kernel parameter
Heiko Carstens [Thu, 25 Dec 2008 12:39:23 +0000 (13:39 +0100)]
[S390] cpu topology: introduce kernel parameter

Introduce a topology=[on|off] kernel parameter which allows to switch
cpu topology on/off. Default will be off, since it looks like that for
some workloards this doesn't behave very well (on s390).

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] add new machine types to setup_hwcaps.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:22 +0000 (13:39 +0100)]
[S390] add new machine types to setup_hwcaps.

Add the machine types for z9-bc, z10-ec and z10-bc to the elf_platform
detection in setup_hwcaps.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] Remove initial kernel stack backchain initialization.
Heiko Carstens [Thu, 25 Dec 2008 12:39:21 +0000 (13:39 +0100)]
[S390] Remove initial kernel stack backchain initialization.

Early init code clears the backchain of the initial kernel stack frame.
This is not necessary since it is pre initialized with zeros. Plus it
was broken on 64 bit since it cleared only four of eight bytes.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] s390: use the new byteorder headers
Harvey Harrison [Thu, 25 Dec 2008 12:39:20 +0000 (13:39 +0100)]
[S390] s390: use the new byteorder headers

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] Add processor type march=z10 and a processor type safety check.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:19 +0000 (13:39 +0100)]
[S390] Add processor type march=z10 and a processor type safety check.

This patch adds the code generation option for IBM System z10 and
adds a check in head[31,64].S to prevents the execution of a kernel
compiled for a new processor type on an old machine.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] sclp vt220: fix compile warning
Heiko Carstens [Thu, 25 Dec 2008 12:39:18 +0000 (13:39 +0100)]
[S390] sclp vt220: fix compile warning

get rid of this one:

  CC      drivers/s390/char/sclp_vt220.o
drivers/s390/char/sclp_vt220.c:588: warning: '__sclp_vt220_flush_buffer' defined but not used

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] remove warnings with functions ending in BUG
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:17 +0000 (13:39 +0100)]
[S390] remove warnings with functions ending in BUG

Functions which end in a BUG() statement and skip the return statement
cause compile warnings on s390, e.g.:

mm/bootmem.c: In function 'mark_bootmem':
mm/bootmem.c:321: warning: control reaches end of non-void function

To avoid the warning add an endless loop to the BUG() macro.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] mark disabled_wait as noreturn function
Heiko Carstens [Thu, 25 Dec 2008 12:39:16 +0000 (13:39 +0100)]
[S390] mark disabled_wait as noreturn function

disabled_wait() won't return, so add an __attribute__((noreturn)).
This will remove a false positive finding which our internal code
checker reports.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: use pim to check for multipath.
Sebastian Ott [Thu, 25 Dec 2008 12:39:15 +0000 (13:39 +0100)]
[S390] cio: use pim to check for multipath.

To check if multipath is available we count the bits set in lpm,
which could change over time (via configure [on|off] of a path).

The following patch uses the pim (which is persistent) for this
decision.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: commit all pmcw changes.
Sebastian Ott [Thu, 25 Dec 2008 12:39:14 +0000 (13:39 +0100)]
[S390] cio: commit all pmcw changes.

Sometimes we change the pmcw configuration but don't call msch
to transmit these changes to the channel subsystem.

The patch fixes this by calling cio_commit_config in such cases.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: introduce cio_commit_config
Sebastian Ott [Thu, 25 Dec 2008 12:39:13 +0000 (13:39 +0100)]
[S390] cio: introduce cio_commit_config

To change the configuration of a subchannel we alter the modifiable
bits of the subchannel's schib field and issue a modify subchannel.
There can be the case that not all changes were applied -or worse-
quietly overwritten by the hardware. With the next store subchannel
we obtain the current state of the hardware but lose our target
configuration.

With this patch we introduce a subchannel_config structure which
contains the target subchannel configuration. Additionally the msch
wrapper cio_modify is replaced with cio_commit_config which
copies the desired changes to a temporary schib. msch is then
called with the temporary schib. This schib is only written back
to the subchannel if all changes were applied.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: introduce cio_update_schib
Sebastian Ott [Thu, 25 Dec 2008 12:39:12 +0000 (13:39 +0100)]
[S390] cio: introduce cio_update_schib

There is the chance that we get condition code 0 for a stsch but
the resulting schib is not vaild. In the current code there are
2 cases:
* we do a check for validity of the schib after stsch, but at this
  time we have already stored the invaild schib in the subchannel
  structure. This may lead to problems.
* we don't do a check for validity, which is not that good either.

The patch addresses both issues by introducing the stsch wrapper
cio_update_schib which performs stsch on a local schib. This schib
is only written back to the subchannel if it's valid.

side note: For some functions (chp_events) the return codes are
different now (-ENXIO vs -ENODEV) but this shouldn't do harm
since the caller doesn't check for _specific_ errors.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: Use device_is_registered().
Cornelia Huck [Thu, 25 Dec 2008 12:39:11 +0000 (13:39 +0100)]
[S390] cio: Use device_is_registered().

Check if a ccw device is registered via device_is_registered()
and not via the old kludge of checking the membership in driver
core internal klists.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: Dont call ->release directly.
Cornelia Huck [Thu, 25 Dec 2008 12:39:10 +0000 (13:39 +0100)]
[S390] cio: Dont call ->release directly.

Just put the cdev's reference count to give up our reference.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: Dont fail probe for I/O subchannels.
Cornelia Huck [Thu, 25 Dec 2008 12:39:09 +0000 (13:39 +0100)]
[S390] cio: Dont fail probe for I/O subchannels.

If we fail the probe for an I/O subchannel, we won't be able
to unregister it again since there are no sch_event()
callbacks for unbound subchannels. Just succeed the probe in
any case and schedule unregistering the subchannel.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: Only register ccw_device for registered subchannel.
Cornelia Huck [Thu, 25 Dec 2008 12:39:08 +0000 (13:39 +0100)]
[S390] cio: Only register ccw_device for registered subchannel.

There is a race between io_subchannel_register() and
io_subchannel_sch_event() which may cause a subchannel to be
unregistered because it is no longer operational before
io_subchannel_register() had run. We need to check whether the
subchannel is still registered before the ccw device can be
registered and just bail out if it is not.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: Fix I/O subchannel refcounting.
Cornelia Huck [Thu, 25 Dec 2008 12:39:07 +0000 (13:39 +0100)]
[S390] cio: Fix I/O subchannel refcounting.

Subchannel refcounting was incorrect in some places, especially
a refcount was missing when ccw_device_call_sch_unregister()
was called and the refcount was not correctly switched after
moving devices.

Fix this by establishing the following rules:
- The ccw_device obtains a reference on its parent subchannel
  when dev.parent is set and gives it up in its release
  function. This is needed because we need a parent reference
  for correct refcounting even before the ccw device is (if at
  all) registered.
- When calling device_move(), obtain a reference on the new
  subchannel before moving the ccw device and give up the
  reference on the old parent after moving. This brings the
  refcount in line with the first rule.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: Fix reference counting for online/offline.
Cornelia Huck [Thu, 25 Dec 2008 12:39:06 +0000 (13:39 +0100)]
[S390] cio: Fix reference counting for online/offline.

The current code attempts to get an extra reference count
for online devices by doing a get_device() in ccw_device_online()
and a put_device() in ccw_device_done(). However, this
- incorrectly obtains an extra reference for disconnected
  devices becoming available again (since they are already
  online)
- needs special checks for css_init_done in order to handle
  the console device
- is not obvious and
- may incorretly drop a reference count in ccw_device_done() if
  that function is called after path verification for a device
  that just became not operational.

So let's just get the reference in ccw_device_set_online() and
drop it in ccw_device_set_offline(). (Unfortunately, we still
need the special case in io_subchannel_probe().)

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: Put referernce on correct device after moving.
Cornelia Huck [Thu, 25 Dec 2008 12:39:05 +0000 (13:39 +0100)]
[S390] cio: Put referernce on correct device after moving.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: fix ccwgroup online vs. ungroup race condition
Peter Oberparleiter [Thu, 25 Dec 2008 12:39:04 +0000 (13:39 +0100)]
[S390] cio: fix ccwgroup online vs. ungroup race condition

Ensure atomicity of ungroup operation to prevent concurrent ungroup
and online processing which may lead to use-after-release situations.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: move irritating comment.
Sebastian Ott [Thu, 25 Dec 2008 12:39:03 +0000 (13:39 +0100)]
[S390] cio: move irritating comment.

Due to former patches a comment and device id initialization were
split from the addressed function call in io_subchannel_probe.

Move it back to where it belongs.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: update sac values
Peter Oberparleiter [Thu, 25 Dec 2008 12:39:02 +0000 (13:39 +0100)]
[S390] cio: update sac values

Values for the sac field have changed - update code accordingly.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cio: get rid of compile warning
Heiko Carstens [Thu, 25 Dec 2008 12:39:01 +0000 (13:39 +0100)]
[S390] cio: get rid of compile warning

Move cio_tpi() to the rest of the CONFIG_CCW_CONSOLE functions to
get rid of this one:

drivers/s390/cio/cio.c:115: warning: 'cio_tpi' defined but not used

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] remove ptrace warning on 31 bit.
Martin Schwidefsky [Thu, 25 Dec 2008 12:39:00 +0000 (13:39 +0100)]
[S390] remove ptrace warning on 31 bit.

A kernel compile on 31 bit gives the following warnings in ptrace.c:

arch/s390/kernel/ptrace.c: In function 'peek_user':
arch/s390/kernel/ptrace.c:207: warning: unused variable 'dummy'
arch/s390/kernel/ptrace.c: In function 'poke_user':
arch/s390/kernel/ptrace.c:315: warning: unused variable 'dummy'

Getting rid of the dummy variables removes the warnings.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] __page_to_pfn warnings
Martin Schwidefsky [Thu, 25 Dec 2008 12:38:59 +0000 (13:38 +0100)]
[S390] __page_to_pfn warnings

For CONFIG_SPARSEMEM_VMEMMAP=y on s390 I get warnings like

init/main.c: In function 'start_kernel':
init/main.c:641: warning: format '%08lx' expects type 'long unsigned int', but argument 2 has type 'int'

The warning can be suppressed with a cast to unsigned long in the
CONFIG_SPARSEMEM_VMEMMAP=y version of __page_to_pfn.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] iucv: Locking free version of iucv_message_(receive|send)
Hendrik Brueckner [Thu, 25 Dec 2008 12:38:58 +0000 (13:38 +0100)]
[S390] iucv: Locking free version of iucv_message_(receive|send)

Provide a locking free version of iucv_message_receive and iucv_message_send
that do not call local_bh_enable in a spin_lock_(bh|irqsave)() context.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
15 years ago[S390] s390/hvc_console: z/VM IUCV hypervisor console support
Hendrik Brueckner [Thu, 25 Dec 2008 12:38:57 +0000 (13:38 +0100)]
[S390] s390/hvc_console: z/VM IUCV hypervisor console support

This patch introduces a new hypervisor console (HVC) back-end that provides
terminal access over the z/VM inter-user communication vehicle (IUCV).

The z/VM IUCV communication is independent of the regular tcp/ip network
and allows access even if there is no network connection between two
z/VM guest virtual machines.
The z/VM IUCV hypervisor console back-end helps the user to access a
z/VM guest virtual machine that lacks of network connectivity; and thus,
provides a "full-screen" terminal alternative to 3215/3270 terminal sessions.

Use the hvc_iucv=[0..8] kernel boot parameter to specify the number of
HVC terminals using a z/VM IUCV back-end.

A recent version of the s390-tools package is required to establish a
terminal connection to a z/VM IUCV hypervisor console back-end.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] ftrace: function tracer backend for s390
Heiko Carstens [Thu, 25 Dec 2008 12:38:56 +0000 (13:38 +0100)]
[S390] ftrace: function tracer backend for s390

This implements just the basic function tracer (_mcount) backend for s390.
The dynamic variant will come later.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] struct device - replace bus_id with dev_name(), dev_set_name()
Kay Sievers [Thu, 25 Dec 2008 12:38:55 +0000 (13:38 +0100)]
[S390] struct device - replace bus_id with dev_name(), dev_set_name()

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] dasd: call cleanup_cqr with request_queue_lock
Stefan Haberland [Thu, 25 Dec 2008 12:38:54 +0000 (13:38 +0100)]
[S390] dasd: call cleanup_cqr with request_queue_lock

__dasd_cleanup_cqr should be called with request_queue_lock held and
__dasd_block_process_erp with queue_lock

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] dasd: correct sense byte condition for SIM
Stefan Haberland [Thu, 25 Dec 2008 12:38:53 +0000 (13:38 +0100)]
[S390] dasd: correct sense byte condition for SIM

SIM sense data are always 32 bit sense data so sense byte 27 bit 0
has not to be set.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] dasd: Use accessors instead of using driver_data directly.
Cornelia Huck [Thu, 25 Dec 2008 12:38:52 +0000 (13:38 +0100)]
[S390] dasd: Use accessors instead of using driver_data directly.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] dasd: improve dasd statistics proc interface
Stefan Haberland [Thu, 25 Dec 2008 12:38:51 +0000 (13:38 +0100)]
[S390] dasd: improve dasd statistics proc interface

For a large number of I/O requests the values were shifted binary.
The shift was not transparent for the user because the shift value
was not displayed. To make this interface more human readable the
values are shifted decimal and the scale factor is displayed.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] zfcp: Report microcode level through service level interface
Christof Schmitt [Thu, 25 Dec 2008 12:38:50 +0000 (13:38 +0100)]
[S390] zfcp: Report microcode level through service level interface

Register zfcp with the new /proc/service_level interface to report the
FCP microcode level. When the adapter goes offline or a channel path
disappears, zfcp unregisters, since the microcode version might change
and zfcp does not know about it.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] service level interface.
Martin Schwidefsky [Thu, 25 Dec 2008 12:38:49 +0000 (13:38 +0100)]
[S390] service level interface.

Add a new proc interface /proc/service_levels that allows any code
to report a relevant service level, e.g. the microcode level of
devices, the service level of the hypervisor, etc.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] qdio: fix error reporting for hipersockets
Jan Glauber [Thu, 25 Dec 2008 12:38:48 +0000 (13:38 +0100)]
[S390] qdio: fix error reporting for hipersockets

Hipersocket connections can encounter temporary busy conditions.
In case of the busy bit set we retry the SIGA operation immediatelly.
If the busy condition still persists after 100 ms we fail and report
the error to the upper layer. The second stage retry logic is removed.
In case of ongoing busy conditions the upper layer needs to reset the
connection.

The reporting of a SIGA error is now done synchronously to allow the
network driver to requeue the buffers. Also no error trace is created
for the temporary SIGA errors so the error message view is not flooded.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] qdio: improve inbound buffer acknowledgement
Jan Glauber [Thu, 25 Dec 2008 12:38:47 +0000 (13:38 +0100)]
[S390] qdio: improve inbound buffer acknowledgement

- Use automatic acknowledgement of incoming buffers in QEBSM mode
- Move ACK for non-QEBSM mode always to the newest buffer to prevent
  a race with qdio_stop_polling
- Remove the polling spinlock, the upper layer drivers return new buffers
  in the same code path and could not run in parallel
- Don't flood the error log in case of no-target-buffer-empty
- In handle_inbound we check if we would overwrite an ACK'ed buffer, if so
  advance the pointer to the oldest ACK'ed buffer so we don't overwrite an
  empty buffer in qdio_stop_polling

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] qdio: rework debug feature logging
Jan Glauber [Thu, 25 Dec 2008 12:38:46 +0000 (13:38 +0100)]
[S390] qdio: rework debug feature logging

- make qdio_trace a per device view
- remove s390dbf exceptions
- remove CONFIG_QDIO_DEBUG, not needed anymore if we check for the level
  before calling sprintf
- use snprintf for dbf entries
- add start markers to see if the dbf view wrapped
- add a global error view for all queues

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] qdio: fix compile warning under 31 bit
Jan Glauber [Thu, 25 Dec 2008 12:38:45 +0000 (13:38 +0100)]
[S390] qdio: fix compile warning under 31 bit

The QEBSM instructions are only available for CONFIG_64BIT, they are not
used under 31 bit. Make compiler happy about the false positive:

drivers/s390/cio/qdio_main.c: In function ?qdio_inbound_q_done?:
drivers/s390/cio/qdio_main.c:532: warning: ?state? may be used uninitialized in this function

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] qdio: add eqbs/sqbs instruction counters
Jan Glauber [Thu, 25 Dec 2008 12:38:44 +0000 (13:38 +0100)]
[S390] qdio: add eqbs/sqbs instruction counters

Add counters for the eqbs and sqbs instructions that indicate how often
we issued the instructions and how often the instructions returned with
less buffers than specified.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] qdio: fix qeth port count detection
Jan Glauber [Thu, 25 Dec 2008 12:38:43 +0000 (13:38 +0100)]
[S390] qdio: fix qeth port count detection

qeth needs to get the port count information before
qdio has allocated a page for the chsc operation.
Extend qdio_get_ssqd_desc() to store the data in the
specified structure.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] ap: Minor code beautification.
Christian Maaser [Thu, 25 Dec 2008 12:38:42 +0000 (13:38 +0100)]
[S390] ap: Minor code beautification.

Changed some symbol names for a better and clearer code.

Signed-off-by: Christian Maaser <cmaaser@de.ibm.com>
Signed-off-by: Felix Beck <beckf@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] zcrypt: Use of Thin Interrupts
Felix Beck [Thu, 25 Dec 2008 12:38:41 +0000 (13:38 +0100)]
[S390] zcrypt: Use of Thin Interrupts

When the machine supports AP adapter interrupts polling will be
switched off at module initialization and the driver will work in
interrupt mode.

Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] Move stfle to header file.
Heiko Carstens [Thu, 25 Dec 2008 12:38:40 +0000 (13:38 +0100)]
[S390] Move stfle to header file.

stfle will be needed by the ap_bus module to figure out wether the AP
queue adapter interruption facility is installed.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert s390 to generic IPI infrastructure
Heiko Carstens [Thu, 25 Dec 2008 12:38:39 +0000 (13:38 +0100)]
[S390] convert s390 to generic IPI infrastructure

Since etr/stp don't need the old smp_call_function semantics anymore
we can convert s390 to the generic IPI infrastructure.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] serialize stp/etr work
Martin Schwidefsky [Thu, 25 Dec 2008 12:38:38 +0000 (13:38 +0100)]
[S390] serialize stp/etr work

The work function dispatched with schedule_work() can be run twice
on different cpus because run_workqueue clears the WORK_STRUCT_PENDING
bit and then executes the function. Another cpu can call schedule_work()
again and run the work function a second time before the first call
is completed. This patch serialized the etr and stp work function with
a mutex.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] convert etr/stp to stop_machine interface
Heiko Carstens [Thu, 25 Dec 2008 12:38:37 +0000 (13:38 +0100)]
[S390] convert etr/stp to stop_machine interface

This converts the etr and stp code to the new stop_machine interface
which allows to synchronize all cpus without allocating any memory.
This way we get rid of the only reason why we haven't converted s390
to the generic IPI interface yet.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] introduce vdso on s390
Martin Schwidefsky [Thu, 25 Dec 2008 12:38:36 +0000 (13:38 +0100)]
[S390] introduce vdso on s390

Add a vdso to speed up gettimeofday and clock_getres/clock_gettime for
CLOCK_REALTIME/CLOCK_MONOTONIC.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] arch_setup_additional_pages arguments
Martin Schwidefsky [Thu, 25 Dec 2008 12:38:35 +0000 (13:38 +0100)]
[S390] arch_setup_additional_pages arguments

arch_setup_additional_pages currently gets two arguments, the binary
format descripton and an indication if the process uses an executable
stack or not. The second argument is not used by anybody, it could
be removed without replacement.

What actually does make sense is to pass an indication if the process
uses the elf interpreter or not. The glibc code will not use anything
from the vdso if the process does not use the dynamic linker, so for
statically linked binaries the architecture backend can choose not
to map the vdso.

Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] vmcp: remove BKL
Christian Borntraeger [Thu, 25 Dec 2008 12:38:34 +0000 (13:38 +0100)]
[S390] vmcp: remove BKL

The vmcp driver uses the session->mutex for concurrent access of the data
structures. Therefore, the BKL in vmcp_open does not protect against any
other function in the driver.
The BLK in vmcp_open would protect concurrent access to the module init
but all necessary steps ave finished before misc_register is called.
We can safely remove the lock_kernel from vcmp.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cpu topology: dont destroy cpu sets on topology change
Heiko Carstens [Thu, 25 Dec 2008 12:37:59 +0000 (13:37 +0100)]
[S390] cpu topology: dont destroy cpu sets on topology change

Call rebuild_sched_domains instead of arch_reinit_sched_domains if
cpu topology changes. This leaves cpu sets alone which otherwise would
be destroyed.
If and how it makes sense to define cpu sets on a virtualized
architecture is another question.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] audit: get s390 ret_from_fork in sync with other architectures
Al Viro [Thu, 25 Dec 2008 12:37:58 +0000 (13:37 +0100)]
[S390] audit: get s390 ret_from_fork in sync with other architectures

On s390 we have ret_from_fork jump not to the "do all work we
normally do on return from syscall" as on x86, ppc, etc., but to the
"do all such work except audit".  Historical reasons - the codepath
triggered when we have AUDIT process flag set is separated from the
normall one and they converge at sysc_return, which is the common
part of post-syscall work.  And does not include calling audit_syscall_exit() -
that's done in the end of sysc_tracesys path, just before that path jumps
to sysc_return.

IOW, the child returning from fork()/clone()/vfork() doesn't
call audit_syscall_exit() at all, so no matter what we do with its
audit context, we are not going to see the audit entry.

The fix is simple: have ret_from_fork go to the point just past
the call of sys_.... in the 'we have AUDIT flag set' path.  There we
have (64bit variant; for 31bit the situation is the same):
sysc_tracenogo:
        tm      __TI_flags+7(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
        jz      sysc_return
        la      %r2,SP_PTREGS(%r15)     # load pt_regs
        larl    %r14,sysc_return        # return point is sysc_return
        jg      do_syscall_trace_exit
which is precisely what we need - check the flag, bugger off to sysc_return
if not set, otherwise call do_syscall_trace_exit() and bugger off to
sysc_return.  r9 has just been properly set by ret_from_fork itself,
so we are fine.

Tested on s390x, seems to work fine.  WARNING: it's been about
16 years since my last contact with 3X0 assembler[1], so additional
review would be very welcome.  I don't think I've managed to screw it
up, but...

[1] that *was* in another country and besides, the box is dead...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years ago[S390] cpu topology: fix cpu_core_map initialization
Heiko Carstens [Thu, 25 Dec 2008 12:37:57 +0000 (13:37 +0100)]
[S390] cpu topology: fix cpu_core_map initialization

Common code doesn't call arch_update_cpu_topology() anymore on
cpu hotplug. But our architecture backend relied on that in order to
update the cpu_core_map. For machines without cpu topology support
this leads uninitialized cpu_core_maps for later on added cpus.

To solve this just initialize the maps with cpu_possible_map, since
that will be always valid for machines without topology support.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
15 years agoMerge branches 'tracing/ftrace', 'tracing/hw-branch-tracing' and 'tracing/ring-buffer...
Ingo Molnar [Thu, 25 Dec 2008 12:11:00 +0000 (13:11 +0100)]
Merge branches 'tracing/ftrace', 'tracing/hw-branch-tracing' and 'tracing/ring-buffer'; commit 'v2.6.28' into tracing/core

15 years agosched, trace: update trace_sched_wakeup()
Peter Zijlstra [Tue, 16 Dec 2008 07:07:03 +0000 (08:07 +0100)]
sched, trace: update trace_sched_wakeup()

Impact: extend the wakeup tracepoint with the info whether the wakeup was real

Add the information needed to distinguish 'real' wakeups from 'false'
wakeups.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branch 'x86/tsc' into tracing/core
Ingo Molnar [Thu, 25 Dec 2008 11:48:18 +0000 (12:48 +0100)]
Merge branch 'x86/tsc' into tracing/core

Merge it to resolve this incidental conflict between the BTS fixes/cleanups
and changes in x86/tsc:

Conflicts:
arch/x86/kernel/cpu/intel.c

15 years agoMerge branches 'x86/pat2' and 'x86/fpu'; commit 'v2.6.28' into x86/core
Ingo Molnar [Thu, 25 Dec 2008 10:50:41 +0000 (11:50 +0100)]
Merge branches 'x86/pat2' and 'x86/fpu'; commit 'v2.6.28' into x86/core

15 years agox86: traps.c replace #if CONFIG_X86_32 with #ifdef CONFIG_X86_32
Jaswinder Singh [Tue, 23 Dec 2008 16:20:11 +0000 (21:50 +0530)]
x86: traps.c replace #if CONFIG_X86_32 with #ifdef CONFIG_X86_32

Impact: cleanup, avoid warning on X86_64

Fixes this warning on X86_64:

  CC      arch/x86/kernel/traps.o
  arch/x86/kernel/traps.c:695:5: warning: "CONFIG_X86_32" is not defined

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>