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2008-10-30freezer_cg: simplify freezer_change_state()Li Zefan
Just call unfreeze_cgroup() if goal_state == THAWED, and call try_to_freeze_cgroup() if goal_state == FROZEN. No behavior has been changed. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Cedric Le Goater <clg@fr.ibm.com> Acked-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30freezer_cg: use thaw_process() in unfreeze_cgroup()Li Zefan
Don't duplicate the implementation of thaw_process(). [akpm@linux-foundation.org: make __thaw_process() static] Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Acked-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30freezer_cg: remove redundant check in freezer_can_attach()Li Zefan
It is sufficient to check if @task is frozen, and no need to check if the original freezer is frozen. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Cedric Le Goater <clg@fr.ibm.com> Acked-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30freezer_cg: fix improper BUG_ON() causing oopsLi Zefan
The BUG_ON() should be protected by freezer->lock, otherwise it can be triggered easily when a task has been unfreezed but the corresponding cgroup hasn't been changed to FROZEN state. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Cedric Le Goater <clg@fr.ibm.com> Acked-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-28Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits) ftrace: fix current_tracer error return tracing: fix a build error on alpha ftrace: use a real variable for ftrace_nop in x86 tracing/ftrace: make boot tracer select the sched_switch tracer tracepoint: check if the probe has been registered asm-generic: define DIE_OOPS in asm-generic trace: fix printk warning for u64 ftrace: warning in kernel/trace/ftrace.c ftrace: fix build failure ftrace, powerpc, sparc64, x86: remove notrace from arch ftrace file ftrace: remove ftrace hash ftrace: remove mcount set ftrace: remove daemon ftrace: disable dynamic ftrace for all archs that use daemon ftrace: add ftrace warn on to disable ftrace ftrace: only have ftrace_kill atomic ftrace: use probe_kernel ftrace: comment arch ftrace code ftrace: return error on failed modified text. ftrace: dynamic ftrace process only text section ...
2008-10-28Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: lockdep: fix irqs on/off ip tracing lockdep: minor fix for debug_show_all_locks() x86: restore the old swiotlb alloc_coherent behavior x86: use GFP_DMA for 24bit coherent_dma_mask swiotlb: remove panic for alloc_coherent failure xen: compilation fix of drivers/xen/events.c on IA64 xen: portability clean up and some minor clean up for xencomm.c xen: don't reload cr3 on suspend kernel/resource: fix reserve_region_with_split() section mismatch printk: remove unused code from kernel/printk.c
2008-10-28Merge branch 'irq-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: irq: make variable static
2008-10-28Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: fix documentation reference for sched_min_granularity_ns sched: virtual time buddy preemption sched: re-instate vruntime based wakeup preemption sched: weaken sync hint sched: more accurate min_vruntime accounting sched: fix a find_busiest_group buglet sched: add CONFIG_SMP consistency
2008-10-28ftrace: fix current_tracer error returnSteven Rostedt
The commit (in linux-tip) c2931e05ec5965597cbfb79ad332d4a29aeceb23 ( ftrace: return an error when setting a nonexistent tracer ) added useful code that would error when a bad tracer was written into the current_tracer file. But this had a bug if the amount written was more than the amount read by that code. The first iteration would set the tracer correctly, but since it did not consume the rest of what was written (usually whitespace), the userspace utility would continue to write what was not consumed. This second iteration would fail to find a tracer and return -EINVAL. Funny thing is that the tracer would have already been set. This patch just consumes all the data that is written to the file. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28lockdep: fix irqs on/off ip tracingHeiko Carstens
Impact: fix lockdep lock-api-caller output when irqsoff tracing is enabled 81d68a96 "ftrace: trace irq disabled critical timings" added wrappers around trace_hardirqs_on/off_caller. However these functions use __builtin_return_address(0) to figure out which function actually disabled or enabled irqs. The result is that we save the ips of trace_hardirqs_on/off instead of the real caller. Not very helpful. However since the patch from Steven the ip already gets passed. So use that and get rid of __builtin_return_address(0) in these two functions. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28lockdep: minor fix for debug_show_all_locks()qinghuang feng
When we failed to get tasklist_lock eventually (count equals 0), we should only print " ignoring it.\n", and not print " locked it.\n" needlessly. Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28tracing: fix a build error on alphaFrederic Weisbecker
Impact: build fix on Alpha When tracing is enabled, some arch have included <linux/irqflags.h> on their <asm/system.h> but others like alpha or m68k don't. Build error on alpha: kernel/trace/trace.c: In function 'tracing_cpumask_write': kernel/trace/trace.c:2145: error: implicit declaration of function 'raw_local_irq_disable' kernel/trace/trace.c:2162: error: implicit declaration of function 'raw_local_irq_enable' Tested on Alpha through a cross-compiler (should correct a similar issue on m68k). Reported-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27tracing/ftrace: make boot tracer select the sched_switch tracerFrederic Weisbecker
Impact: build fix If the boot tracer is selected but not the sched_switch, there will be a build failure: kernel/built-in.o: In function `boot_trace_init': trace_boot.c:(.text+0x5ee38): undefined reference to `sched_switch_trace' kernel/built-in.o: In function `disable_boot_trace': (.text+0x5eee1): undefined reference to `tracing_stop_cmdline_record' kernel/built-in.o: In function `enable_boot_trace': (.text+0x5ef11): undefined reference to `tracing_start_cmdline_record' This patch fixes it. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27tracepoint: check if the probe has been registeredFrederic Weisbecker
Impact: fix kernel crash that can trigger during tracing If we try to remove a probe that has not been already registered, the tracepoint_entry_remove_probe() function will dereference a NULL pointer. Check the probe before removing it to avoid crashes. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27trace: fix printk warning for u64Stephen Rothwell
A powerpc ppc64_defconfig build produces these warnings: kernel/trace/ring_buffer.c: In function 'rb_add_time_stamp': kernel/trace/ring_buffer.c:969: warning: format '%llu' expects type 'long long unsigned int', but argument 2 has type 'u64' kernel/trace/ring_buffer.c:969: warning: format '%llu' expects type 'long long unsigned int', but argument 3 has type 'u64' kernel/trace/ring_buffer.c:969: warning: format '%llu' expects type 'long long unsigned int', but argument 4 has type 'u64' Just cast the u64s to unsigned long long like we do everywhere else. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27Merge commit 'v2.6.28-rc2' into tracing/urgentIngo Molnar
2008-10-26cgroup: remove unused variableStephen Rothwell
/scratch/sfr/next/kernel/cgroup.c: In function 'cgroup_tasks_start': /scratch/sfr/next/kernel/cgroup.c:2107: warning: unused variable 'i' Introduced in commit cc31edceee04a7b87f2be48f9489ebb72d264844 "cgroups: convert tasks file to use a seq_file with shared pid array". Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-25Revert "Call init_workqueues before pre smp initcalls."Linus Torvalds
This reverts commit a802dd0eb5fc97a50cf1abb1f788a8f6cc5db635 by moving the call to init_workqueues() back where it belongs - after SMP has been initialized. It also moves stop_machine_init() - which needs workqueues - to a later phase using a core_initcall() instead of early_initcall(). That should satisfy all ordering requirements, and was apparently the reason why init_workqueues() was moved to be too early. Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-24ftrace: warning in kernel/trace/ftrace.cIngo Molnar
this warning: kernel/trace/ftrace.c:189: warning: ‘frozen_record_count’ defined but not used triggers because frozen_record_count is only used in the KCONFIG_MARKERS case. Move the variable it there. Alas, this frozen-record facility seems to have little use. The frozen_record_count variable is not used by anything, nor the flags. So this section might need a bit of dead-code-removal care as well. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-24sched: virtual time buddy preemptionPeter Zijlstra
Since we moved wakeup preemption back to virtual time, it makes sense to move the buddy stuff back as well. The purpose of the buddy scheduling is to allow a quickly scheduling pair of tasks to run away from the group as far as a regular busy task would be allowed under wakeup preemption. This has the advantage that the pair can ping-pong for a while, enjoying cache-hotness. Without buddy scheduling other tasks would interleave destroying the cache. Also, it saves a word in cfs_rq. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-24sched: re-instate vruntime based wakeup preemptionPeter Zijlstra
The advantage is that vruntime based wakeup preemption has a better conceptual model. Here wakeup_gran = 0 means: preempt when 'fair'. Therefore wakeup_gran is the granularity of unfairness we allow in order to make progress. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-24sched: weaken sync hintMike Galbraith
Mysql+oltp and pgsql+oltp peaks are still shifted right. The below puts the peaks back to 1 client/server pair per core. Use the avg_overlap information to weaken the sync hint. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-24sched: more accurate min_vruntime accountingPeter Zijlstra
Mike noticed the current min_vruntime tracking can go wrong and skip the current task. If the only remaining task in the tree is a nice 19 task with huge vruntime, new tasks will be inserted too far to the right too, causing some interactibity issues. min_vruntime can only change due to the leftmost entry disappearing (dequeue_entity()), or by the leftmost entry being incremented past the next entry, which elects a new leftmost (__update_curr()) Due to the current entry not being part of the actual tree, we have to compare the leftmost tree entry with the current entry, and take the leftmost of these two. So create a update_min_vruntime() function that takes computes the leftmost vruntime in the system (either tree of current) and increases the cfs_rq->min_vruntime if the computed value is larger than the previously found min_vruntime. And call this from the two sites we've identified that can change min_vruntime. Reported-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-24sched: fix a find_busiest_group bugletPeter Zijlstra
In one of the group load balancer patches: commit 408ed066b11cf9ee4536573b4269ee3613bd735e Author: Peter Zijlstra <a.p.zijlstra@chello.nl> Date: Fri Jun 27 13:41:28 2008 +0200 Subject: sched: hierarchical load vs find_busiest_group The following change: - if (max_load - this_load + SCHED_LOAD_SCALE_FUZZ >= + if (max_load - this_load + 2*busiest_load_per_task >= busiest_load_per_task * imbn) { made the condition always true, because imbn is [1,2]. Therefore, remove the 2*, and give the it a fair chance. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-24Merge commit 'v2.6.28-rc1' into sched/urgentIngo Molnar
2008-10-23kernel/resource: fix reserve_region_with_split() section mismatchPaul Mundt
Impact: cleanup, small kernel text size reduction, no functionality changed reserve_region_with_split() calls in to __reserve_region_with_split(), which is an __init function. The only caller of reserve_region_with_split() is an __init function, so make it __init too. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23printk: remove unused code from kernel/printk.croel kluin
both log_buf_copy() and log_buf_len are unused. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23Fix compile warning in kernel/params.cLinus Torvalds
Move free_module_param_attrs() into the CONFIG_MODULES section, since it's only used inside there. Thus avoiding the warning kernel/params.c:514: warning: 'free_module_param_attrs' defined but not used Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23Merge branch 'proc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc * 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: (35 commits) proc: remove fs/proc/proc_misc.c proc: move /proc/vmcore creation to fs/proc/vmcore.c proc: move pagecount stuff to fs/proc/page.c proc: move all /proc/kcore stuff to fs/proc/kcore.c proc: move /proc/schedstat boilerplate to kernel/sched_stats.h proc: move /proc/modules boilerplate to kernel/module.c proc: move /proc/diskstats boilerplate to block/genhd.c proc: move /proc/zoneinfo boilerplate to mm/vmstat.c proc: move /proc/vmstat boilerplate to mm/vmstat.c proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c proc: move /proc/buddyinfo boilerplate to mm/vmstat.c proc: move /proc/vmallocinfo to mm/vmalloc.c proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c proc: move /proc/slab_allocators boilerplate to mm/slab.c proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c proc: move /proc/stat to fs/proc/stat.c proc: move rest of /proc/partitions code to block/genhd.c proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c proc: move /proc/devices code to fs/proc/devices.c proc: move rest of /proc/locks to fs/locks.c ...
2008-10-23Merge branch 'v28-range-hrtimers-for-linus-v2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'v28-range-hrtimers-for-linus-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits) hrtimers: add missing docbook comments to struct hrtimer hrtimers: simplify hrtimer_peek_ahead_timers() hrtimers: fix docbook comments DECLARE_PER_CPU needs linux/percpu.h hrtimers: fix typo rangetimers: fix the bug reported by Ingo for real rangetimer: fix BUG_ON reported by Ingo rangetimer: fix x86 build failure for the !HRTIMERS case select: fix alpha OSF wrapper select: fix alpha OSF wrapper hrtimer: peek at the timer queue just before going idle hrtimer: make the futex() system call use the per process slack value hrtimer: make the nanosleep() syscall use the per process slack hrtimer: fix signed/unsigned bug in slack estimator hrtimer: show the timer ranges in /proc/timer_list hrtimer: incorporate feedback from Peter Zijlstra hrtimer: add a hrtimer_start_range() function hrtimer: another build fix hrtimer: fix build bug found by Ingo hrtimer: make select() and poll() use the hrtimer range feature ...
2008-10-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdevLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev: (66 commits) [PATCH] kill the rest of struct file propagation in block ioctls [PATCH] get rid of struct file use in blkdev_ioctl() BLKBSZSET [PATCH] get rid of blkdev_locked_ioctl() [PATCH] get rid of blkdev_driver_ioctl() [PATCH] sanitize blkdev_get() and friends [PATCH] remember mode of reiserfs journal [PATCH] propagate mode through swsusp_close() [PATCH] propagate mode through open_bdev_excl/close_bdev_excl [PATCH] pass fmode_t to blkdev_put() [PATCH] kill the unused bsize on the send side of /dev/loop [PATCH] trim file propagation in block/compat_ioctl.c [PATCH] end of methods switch: remove the old ones [PATCH] switch sr [PATCH] switch sd [PATCH] switch ide-scsi [PATCH] switch tape_block [PATCH] switch dcssblk [PATCH] switch dasd [PATCH] switch mtd_blkdevs [PATCH] switch mmc ...
2008-10-23Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (46 commits) [PATCH] fs: add a sanity check in d_free [PATCH] i_version: remount support [patch] vfs: make security_inode_setattr() calling consistent [patch 1/3] FS_MBCACHE: don't needlessly make it built-in [PATCH] move executable checking into ->permission() [PATCH] fs/dcache.c: update comment of d_validate() [RFC PATCH] touch_mnt_namespace when the mount flags change [PATCH] reiserfs: add missing llseek method [PATCH] fix ->llseek for more directories [PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intent [PATCH vfs-2.6 5/6] vfs: remove LOOKUP_PARENT from non LOOKUP_PARENT lookup [PATCH vfs-2.6 4/6] vfs: remove unnecessary fsnotify_d_instantiate() [PATCH vfs-2.6 3/6] vfs: add __d_instantiate() helper [PATCH vfs-2.6 2/6] vfs: add d_ancestor() [PATCH vfs-2.6 1/6] vfs: replace parent == dentry->d_parent by IS_ROOT() [PATCH] get rid of on-stack dentry in udf [PATCH 2/2] anondev: switch to IDA [PATCH 1/2] anondev: init IDR statically [JFFS2] Use d_splice_alias() not d_add() in jffs2_lookup() [PATCH] Optimise NFS readdir hack slightly. ...
2008-10-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: stop_machine: fix error code handling on multiple cpus stop_machine: use workqueues instead of kernel threads workqueue: introduce create_rt_workqueue Call init_workqueues before pre smp initcalls. Make panic= and panic_on_oops into core_params Make initcall_debug a core_param core_param() for genuinely core kernel parameters param: Fix duplicate module prefixes module: check kernel param length at compile time, not runtime Remove stop_machine during module load v2 module: simplify load_module.
2008-10-23Merge branch 'v28-timers-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'v28-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: NOHZ: fix thinko in the timer restart code path
2008-10-23Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcupdate: fix bug of rcu_barrier*() profiling: fix !procfs build Fixed trivial conflicts in 'include/linux/profile.h'
2008-10-23Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: disable the hrtick for now sched: revert back to per-rq vruntime sched: fair scheduler should not resched rt tasks sched: optimize group load balancer sched: minor fast-path overhead reduction sched: fix the wrong mask_len, cleanup sched: kill unused scheduler decl. sched: fix the wrong mask_len sched: only update rq->clock while holding rq->lock
2008-10-23Merge branch 'irq-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: NULL struct irq_desc's member 'name' in dynamic_irq_cleanup() genirq: fix off by one and coding style genirq: fix set_irq_type() when recording trigger type
2008-10-23ftrace: fix build failureIngo Molnar
fix: kernel/trace/ftrace.c: In function 'ftrace_release': kernel/trace/ftrace.c:271: error: implicit declaration of function 'ftrace_release_hash' release_hash is not needed without dftraced. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23proc: move /proc/schedstat boilerplate to kernel/sched_stats.hAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/modules boilerplate to kernel/module.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23ftrace: remove ftrace hashSteven Rostedt
The ftrace hash was used by the ftrace_daemon code. The record ip function would place the calling address (ip) into the hash. The daemon would later read the hash and modify that code. The hash complicates the code. This patch removes it. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23ftrace: remove mcount setSteven Rostedt
The arch dependent function ftrace_mcount_set was only used by the daemon start up code. This patch removes it. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23ftrace: remove daemonSteven Rostedt
The ftrace daemon is complex and error prone. This patch strips it out of the code. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23ftrace: add ftrace warn on to disable ftraceSteven Rostedt
Add ftrace warn on to disable ftrace as well as report a warning. [ Thanks to Andrew Morton for suggesting using the WARN_ON return value ] Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23ftrace: only have ftrace_kill atomicSteven Rostedt
When an anomaly is detected, we need a way to completely disable ftrace. Right now we have two functions: ftrace_kill and ftrace_kill_atomic. The ftrace_kill tries to do it in a "nice" way by converting everything back to a nop. The "nice" way is dangerous itself, so this patch removes it and only has the "atomic" version, which is all that is needed. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23ftrace: return error on failed modified text.Steven Rostedt
Have the ftrace_modify_code return error values: -EFAULT on error of reading the address -EINVAL if what is read does not match what it expected -EPERM if the write fails to update after a successful match. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23proc: move /proc/execdomains to kernel/exec_domain.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23[PATCH] get rid of nameidata in audit_treeAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-22ring-buffer: fix free pageSteven Rostedt
The pages of a buffer was originally pointing to the page struct, it now points to the page address. The freeing of the page still uses the page frame free "__free_page" instead of the correct free_page to the address. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-22sched: add CONFIG_SMP consistencyLi Zefan
a patch from Henrik Austad did this: >> Do not declare select_task_rq as part of sched_class when CONFIG_SMP is >> not set. Peter observed: > While a proper cleanup, could you do it by re-arranging the methods so > as to not create an additional ifdef? Do not declare select_task_rq and some other methods as part of sched_class when CONFIG_SMP is not set. Also gather those methods to avoid CONFIG_SMP mess. Idea-by: Henrik Austad <henrik.austad@gmail.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Henrik Austad <henrik@austad.us> Signed-off-by: Ingo Molnar <mingo@elte.hu>