Ingo Molnar ece8a684c7 [PATCH] sleep profiling ...

Implement prof=sleep profiling.  TASK_UNINTERRUPTIBLE sleeps will be taken
as a profile hit, and every millisecond spent sleeping causes a profile-hit
for the call site that initiated the sleep.

Sample readprofile output on i386:

   306 ps2_sendbyte                               1.3973
   432 call_usermodehelper_keys                   1.9548
   484 ps2_command                                0.6453
   790 __driver_attach                            4.7879
  1593 msleep                                    44.2500
  3976 sync_buffer                               64.1290
  4076 do_lookup                                 12.4648
  8587 sync_page                                122.6714
 20820 total                                      0.0067

(NOTE: architectures need to check whether get_wchan() can be called from
deep within the wakeup path.)

akpm: we need to mark more functions __sched.  lock_sock(), msleep(), others..

akpm: the contention in do_lookup() is a surprise.  Presumably doing disk
reads for directory contents while holding i_mutex.

[akpm@osdl.org: various fixes]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-12-07 08:39:36 -08:00

..

irq

[PATCH] lockdep: name some old style locks

2006-12-07 08:39:36 -08:00

power

[PATCH] Export pm_suspend for the shared APM emulation

2006-12-07 08:39:32 -08:00

time

[PATCH] time_adjust cleared before use

2006-10-28 11:30:55 -07:00

.gitignore

gitignore: ignore more generated files

2006-01-03 11:35:26 +01:00

acct.c

[PATCH] lockdep: name some old style locks

2006-12-07 08:39:36 -08:00

audit.c

[PATCH] Add include/linux/freezer.h and move definitions from sched.h

2006-12-07 08:39:27 -08:00

audit.h

[PATCH] audit: AUDIT_PERM support

2006-09-11 13:32:30 -04:00

auditfilter.c

[PATCH] arch filter lists with < or > should not be accepted

2006-10-04 08:31:16 -04:00

auditsc.c

[PATCH] severing skbuff.h -> highmem.h

2006-12-04 02:00:29 -05:00

capability.c

[PATCH] pidspace: is_init()

2006-09-29 09:18:12 -07:00

compat.c

[PATCH] Create compat_sys_migrate_pages

2006-11-03 12:27:59 -08:00

configs.c

Remove obsolete #include <linux/config.h>

2006-06-30 19:25:36 +02:00

cpu.c

[PATCH] suspend: don't change cpus_allowed for task initiating the suspend

2006-12-07 08:39:28 -08:00

cpuset.c

[PATCH] cpuset: minor code refinements

2006-12-07 08:39:32 -08:00

delayacct.c

[PATCH] slab: remove kmem_cache_t

2006-12-07 08:39:25 -08:00

dma.c

[PATCH] kernel-doc for kernel/dma.c

2006-10-03 08:03:41 -07:00

exec_domain.c

Remove obsolete #include <linux/config.h>

2006-06-30 19:25:36 +02:00

exit.c

[PATCH] taskstats: cleanup do_exit() path

2006-12-07 08:39:34 -08:00

extable.c

[PATCH] symbol_put_addr() locks kernel

2006-05-15 11:20:55 -07:00

fork.c

[PATCH] taskstats: cleanup ->signal->stats allocation

2006-12-07 08:39:34 -08:00

futex_compat.c

[PATCH] __user annotations: futex

2006-10-10 15:37:22 -07:00

futex.c

[PATCH] mm: pagefault_{disable,enable}()

2006-12-07 08:39:21 -08:00

hrtimer.c

[PATCH] posix-timers: Fix clock_nanosleep() doesn't return the remaining time in compatibility mode

2006-09-29 09:18:15 -07:00

itimer.c

[PATCH] hrtimers: remove data field

2006-03-26 08:57:03 -08:00

kallsyms.c

[PATCH] /proc/kallsyms reports lower-case types for some non-exported symbols

2006-12-07 08:39:31 -08:00

Kconfig.hz

[PATCH] i386: Selectable Frequency of the Timer Interrupt

2005-06-23 09:45:10 -07:00

Kconfig.preempt

[PATCH] sched: voluntary kernel preemption

2005-06-25 16:24:45 -07:00

kexec.c

[PATCH] kexec warning fix

2006-09-29 09:18:15 -07:00

kfifo.c

[PATCH] memory ordering in __kfifo primitives

2006-09-29 09:18:13 -07:00

kmod.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

2006-12-05 14:37:56 +00:00

kprobes.c

[PATCH] kretprobe spinlock deadlock patch

2006-10-02 07:57:16 -07:00

ksysfs.c

Remove obsolete #include <linux/config.h>

2006-06-30 19:25:36 +02:00

kthread.c

WorkStruct: Pass the work_struct pointer instead of context data

2006-11-22 14:55:48 +00:00

latency.c

[PATCH] severing module.h->sched.h

2006-12-04 02:00:22 -05:00

lockdep_internals.h

[PATCH] lockdep: double the number of stack-trace entries

2006-09-13 07:32:14 -07:00

lockdep_proc.c

[PATCH] lockdep: procfs

2006-07-03 15:27:04 -07:00

lockdep.c

[PATCH] lockdep: misc fixes in lockdep.c

2006-12-07 08:39:33 -08:00

Makefile

[PATCH] srcu-3: RCU variant permitting read-side blocking

2006-10-04 07:55:30 -07:00

module.c

[PATCH] severing module.h->sched.h

2006-12-04 02:00:22 -05:00

mutex-debug.c

Lockdep: add lockdep_set_class_and_subclass() and lockdep_set_subclass()

2006-10-11 01:45:14 -04:00

mutex-debug.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

mutex.c

[PATCH] lockdep: prove mutex locking correctness

2006-07-03 15:27:04 -07:00

mutex.h

[PATCH] lockdep: prove mutex locking correctness

2006-07-03 15:27:04 -07:00

nsproxy.c

[PATCH] kernel/nsproxy.c: use kmemdup()

2006-10-20 10:26:44 -07:00

panic.c

[PATCH] x86: Clean up x86 NMI sysctls

2006-09-30 01:47:55 +02:00

params.c

[PATCH] module_subsys: initialize earlier

2006-09-29 09:18:08 -07:00

pid.c

[PATCH] slab: remove kmem_cache_t

2006-12-07 08:39:25 -08:00

posix-cpu-timers.c

[PATCH] posix-cpu-timers: prevent signal delivery starvation

2006-10-17 08:18:43 -07:00

posix-timers.c

[PATCH] slab: remove kmem_cache_t

2006-12-07 08:39:25 -08:00

printk.c

[PATCH] Add printk_timed_ratelimit()

2006-11-03 12:27:58 -08:00

profile.c

[PATCH] sleep profiling

2006-12-07 08:39:36 -08:00

ptrace.c

[PATCH] pidspace: is_init()

2006-09-29 09:18:12 -07:00

rcupdate.c

[PATCH] rcu: simplify/improve batch tuning

2006-10-04 07:55:31 -07:00

rcutorture.c

[PATCH] rcu: add sched torture type to rcutorture

2006-10-04 07:55:31 -07:00

relay.c

WorkStruct: make allyesconfig

2006-11-22 14:57:56 +00:00

resource.c

[PATCH] kernel-doc for kernel/resource.c

2006-10-03 08:03:41 -07:00

rtmutex_common.h

[PATCH] pi-futex: futex_lock_pi/futex_unlock_pi support

2006-06-27 17:32:47 -07:00

rtmutex-debug.c

Remove all inclusions of <linux/config.h>

2006-10-04 03:38:54 -04:00

rtmutex-debug.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

rtmutex-tester.c

[PATCH] Add include/linux/freezer.h and move definitions from sched.h

2006-12-07 08:39:27 -08:00

rtmutex.c

[PATCH] clean up and remove some extra spinlocks from rtmutex

2006-09-29 09:18:09 -07:00

rtmutex.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

rwsem.c

[PATCH] lockdep: prove rwsem locking correctness

2006-07-03 15:27:04 -07:00

sched.c

[PATCH] sleep profiling

2006-12-07 08:39:36 -08:00

seccomp.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.c

[PATCH] Add include/linux/freezer.h and move definitions from sched.h

2006-12-07 08:39:27 -08:00

softirq.c

[PATCH] check return value of cpu_callback

2006-09-29 09:18:14 -07:00

softlockup.c

[PATCH] check return value of cpu_callback

2006-09-29 09:18:14 -07:00

spinlock.c

[PATCH] lockdep: spin_lock_irqsave_nested()

2006-11-25 13:28:34 -08:00

srcu.c

[PATCH] SRCU: report out-of-memory errors

2006-10-04 07:55:30 -07:00

stacktrace.c

[PATCH] lockdep: stacktrace subsystem, core

2006-07-03 15:27:02 -07:00

stop_machine.c

[PATCH] stop_machine.c copyright

2006-09-29 09:18:24 -07:00

sys_ni.c

[PATCH] Create compat_sys_migrate_pages

2006-11-03 12:27:59 -08:00

sys.c

WorkStruct: Pass the work_struct pointer instead of context data

2006-11-22 14:55:48 +00:00

sysctl.c

[PATCH] new scheme to preempt swap token

2006-12-07 08:39:21 -08:00

taskstats.c

[PATCH] taskstats: cleanup reply assembling

2006-12-07 08:39:34 -08:00

time.c

[PATCH] NTP: Move all the NTP related code to ntp.c

2006-10-01 00:39:26 -07:00

timer.c

[PATCH] kill wall_jiffies

2006-10-01 00:39:27 -07:00

tsacct.c

[PATCH] xacct_add_tsk: fix pure theoretical ->mm use-after-free

2006-10-30 12:08:41 -08:00

uid16.c

[PATCH] Add more prevent_tail_call()

2006-04-19 16:27:18 -07:00

unwind.c

[PATCH] x86-64: work around gcc4 issue with -Os in Dwarf2 stack unwind

2006-11-28 20:12:59 +01:00

user.c

[PATCH] slab: remove kmem_cache_t

2006-12-07 08:39:25 -08:00

utsname.c

[PATCH] namespaces: utsname: implement CLONE_NEWUTS flag

2006-10-02 07:57:22 -07:00

wait.c

[PATCH] uninline init_waitqueue_head()

2006-07-10 13:24:25 -07:00

workqueue.c

[PATCH] Support for freezeable workqueues

2006-12-07 08:39:29 -08:00