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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>		18 years ago
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reed_solomon	…
zlib_deflate	…
zlib_inflate	…
.gitignore	…
Kconfig	…
Kconfig.debug	[PATCH] Add debugging feature /proc/timer_stat	18 years ago
Makefile	…
audit.c	…
bitmap.c	…
bitrev.c	…
bug.c	…
bust_spinlocks.c	…
cmdline.c	…
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crc32defs.h	…
ctype.c	…
debug_locks.c	…
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devres.c	…
div64.c	…
dump_stack.c	…
extable.c	…
fault-inject.c	…
find_next_bit.c	…
gen_crc32table.c	…
genalloc.c	…
halfmd4.c	…
hweight.c	…
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inflate.c	…
int_sqrt.c	…
iomap.c	…
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kernel_lock.c	…
klist.c	…
kobject.c	…
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libcrc32c.c	…
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locking-selftest-hardirq.h	…
locking-selftest-mutex.h	…
locking-selftest-rlock-hardirq.h	…
locking-selftest-rlock-softirq.h	…
locking-selftest-rlock.h	…
locking-selftest-rsem.h	…
locking-selftest-softirq.h	…
locking-selftest-spin-hardirq.h	…
locking-selftest-spin-softirq.h	…
locking-selftest-spin.h	…
locking-selftest-wlock-hardirq.h	…
locking-selftest-wlock-softirq.h	…
locking-selftest-wlock.h	…
locking-selftest-wsem.h	…
locking-selftest.c	…
parser.c	…
percpu_counter.c	…
plist.c	…
prio_tree.c	…
radix-tree.c	…
random32.c	…
rbtree.c	…
reciprocal_div.c	…
rwsem-spinlock.c	…
rwsem.c	…
semaphore-sleepers.c	…
sha1.c	…
smp_processor_id.c	…
sort.c	…
spinlock_debug.c	…
string.c	…
swiotlb.c	…
textsearch.c	…
ts_bm.c	…
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ts_kmp.c	…
vsprintf.c	…