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82f67cd9fc
linux/include
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Ingo Molnar 82f67cd9fc [PATCH] Add debugging feature /proc/timer_stat 
Add /proc/timer_stats support: debugging feature to profile timer expiration.
Both the starting site, process/PID and the expiration function is captured.
This allows the quick identification of timer event sources in a system.

Sample output:

# echo 1 > /proc/timer_stats
# cat /proc/timer_stats
Timer Stats Version: v0.1
Sample period: 4.010 s
  24,     0 swapper          hrtimer_stop_sched_tick (hrtimer_sched_tick)
  11,     0 swapper          sk_reset_timer (tcp_delack_timer)
   6,     0 swapper          hrtimer_stop_sched_tick (hrtimer_sched_tick)
   2,     1 swapper          queue_delayed_work_on (delayed_work_timer_fn)
  17,     0 swapper          hrtimer_restart_sched_tick (hrtimer_sched_tick)
   2,     1 swapper          queue_delayed_work_on (delayed_work_timer_fn)
   4,  2050 pcscd            do_nanosleep (hrtimer_wakeup)
   5,  4179 sshd             sk_reset_timer (tcp_write_timer)
   4,  2248 yum-updatesd     schedule_timeout (process_timeout)
  18,     0 swapper          hrtimer_restart_sched_tick (hrtimer_sched_tick)
   3,     0 swapper          sk_reset_timer (tcp_delack_timer)
   1,     1 swapper          neigh_table_init_no_netlink (neigh_periodic_timer)
   2,     1 swapper          e1000_up (e1000_watchdog)
   1,     1 init             schedule_timeout (process_timeout)
100 total events, 25.24 events/sec

[ cleanups and hrtimers support from Thomas Gleixner <tglx@linutronix.de> ]
[bunk@stusta.de: nr_entries can become static]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:13:59 -08:00
..
acpi [PATCH] ACPI keep track of timer broadcasting 2007-02-16 08:13:58 -08:00
asm-alpha [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-arm [PATCH] S3C2410 GPIO wrappers 2007-02-12 09:48:34 -08:00
asm-arm26 [PATCH] fix sparse warnings from {asm,net}/checksum.h 2007-02-11 10:51:31 -08:00
asm-avr32 [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-cris [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-frv [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-generic [PATCH] i386: paravirt CPU hypercall batching mode 2007-02-13 13:26:21 +01:00
asm-h8300 [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-i386 [PATCH] i386 rework local apic timer calibration 2007-02-16 08:13:59 -08:00
asm-ia64 ATA convert GSI to irq on ia64 2007-02-15 18:04:53 -05:00
asm-m32r [PATCH] fix sparse warnings from {asm,net}/checksum.h 2007-02-11 10:51:31 -08:00
asm-m68k [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-m68knommu [PATCH] m68knommu: removed include of system.h from bitops 2007-02-09 10:45:33 -08:00
asm-mips [MIPS] Fix sigset_t endianess swapping issues in 32-bit compat code. 2007-02-13 22:40:51 +00:00
asm-parisc [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-powerpc [POWERPC] Use udbg_early_init() on ppc32 2007-02-14 11:55:16 +11:00
asm-ppc [POWERPC] ppc: Add support for AMCC Taishan 440GX eval board 2007-02-13 15:35:52 +11:00
asm-s390 [S390] remove __io_virt and mmiowb. 2007-02-12 15:49:57 +01:00
asm-sh sh: rts7751r2d board updates. 2007-02-15 18:20:52 +09:00
asm-sh64 [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-sparc [PATCH] add missing io...._rep() on sparc32 2007-02-11 11:18:07 -08:00
asm-sparc64 [SPARC64]: Increase command line size to 2048 like other arches. 2007-02-12 15:15:47 -08:00
asm-um [PATCH] uml: x86_64 ptrace fixes 2007-02-11 10:51:24 -08:00
asm-v850 [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
asm-x86_64 [PATCH] x86: rewrite SMP TSC sync code 2007-02-16 08:13:57 -08:00
asm-xtensa [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
crypto
keys
linux [PATCH] Add debugging feature /proc/timer_stat 2007-02-16 08:13:59 -08:00
math-emu
media
mtd
net [IPSEC]: changing API of xfrm6_tunnel_register 2007-02-13 12:55:55 -08:00
pcmcia
rdma
rxrpc
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-02-11 11:44:25 -08:00
sound [ALSA] version 1.0.14rc2 2007-02-14 08:42:20 +01:00
video [PATCH] Video: fb, add true ref_count atomicity 2007-02-12 09:48:42 -08:00
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