• Ingo Molnar's avatar
    [PATCH] Add debugging feature /proc/timer_list · 289f480a
    Ingo Molnar authored
    add /proc/timer_list, which prints all currently pending (high-res) timers,
    all clock-event sources and their parameters in a human-readable form.
    
    Sample output:
    
    Timer List Version: v0.1
    HRTIMER_MAX_CLOCK_BASES: 2
    now at 4246046273872 nsecs
    
    cpu: 0
     clock 0:
      .index:      0
      .resolution: 1 nsecs
      .get_time:   ktime_get_real
      .offset:     1273998312645738432 nsecs
    active timers:
     clock 1:
      .index:      1
      .resolution: 1 nsecs
      .get_time:   ktime_get
      .offset:     0 nsecs
    active timers:
     #0: <f5a90ec8>, hrtimer_sched_tick, hrtimer_stop_sched_tick, swapper/0
     # expires at 4246432689566 nsecs [in 386415694 nsecs]
     #1: <f5a90ec8>, hrtimer_wakeup, do_nanosleep, pcscd/2050
     # expires at 4247018194689 nsecs [in 971920817 nsecs]
     #2: <f5a90ec8>, hrtimer_wakeup, do_nanosleep, irqbalance/1909
     # expires at 4247351358392 nsecs [in 1305084520 nsecs]
     #3: <f5a90ec8>, hrtimer_wakeup, do_nanosleep, crond/2157
     # expires at 4249097614968 nsecs [in 3051341096 nsecs]
     #4: <f5a90ec8>, it_real_fn, do_setitimer, syslogd/1888
     # expires at 4251329900926 nsecs [in 5283627054 nsecs]
      .expires_next   : 4246432689566 nsecs
      .hres_active    : 1
      .check_clocks   : 0
      .nr_events      : 31306
      .idle_tick      : 4246020791890 nsecs
      .tick_stopped   : 1
      .idle_jiffies   : 986504
      .idle_calls     : 40700
      .idle_sleeps    : 36014
      .idle_entrytime : 4246019418883 nsecs
      .idle_sleeptime : 4178181972709 nsecs
    
    cpu: 1
     clock 0:
      .index:      0
      .resolution: 1 nsecs
      .get_time:   ktime_get_real
      .offset:     1273998312645738432 nsecs
    active timers:
     clock 1:
      .index:      1
      .resolution: 1 nsecs
      .get_time:   ktime_get
      .offset:     0 nsecs
    active timers:
     #0: <f5a90ec8>, hrtimer_sched_tick, hrtimer_restart_sched_tick, swapper/0
     # expires at 4246050084568 nsecs [in 3810696 nsecs]
     #1: <f5a90ec8>, hrtimer_wakeup, do_nanosleep, atd/2227
     # expires at 4261010635003 nsecs [in 14964361131 nsecs]
     #2: <f5a90ec8>, hrtimer_wakeup, do_nanosleep, smartd/2332
     # expires at 5469485798970 nsecs [in 1223439525098 nsecs]
      .expires_next   : 4246050084568 nsecs
      .hres_active    : 1
      .check_clocks   : 0
      .nr_events      : 24043
      .idle_tick      : 4246046084568 nsecs
      .tick_stopped   : 0
      .idle_jiffies   : 986510
      .idle_calls     : 26360
      .idle_sleeps    : 22551
      .idle_entrytime : 4246043874339 nsecs
      .idle_sleeptime : 4170763761184 nsecs
    
    tick_broadcast_mask: 00000003
    event_broadcast_mask: 00000001
    
    CPU#0's local event device:
    
    Clock Event Device: lapic
     capabilities:   0000000e
     max_delta_ns:   807385544
     min_delta_ns:   1443
     mult:           44624025
     shift:          32
     set_next_event: lapic_next_event
     set_mode:       lapic_timer_setup
     event_handler:  hrtimer_interrupt
      .installed:  1
      .expires:    4246432689566 nsecs
    
    CPU#1's local event device:
    
    Clock Event Device: lapic
     capabilities:   0000000e
     max_delta_ns:   807385544
     min_delta_ns:   1443
     mult:           44624025
     shift:          32
     set_next_event: lapic_next_event
     set_mode:       lapic_timer_setup
     event_handler:  hrtimer_interrupt
      .installed:  1
      .expires:    4246050084568 nsecs
    
    Clock Event Device: hpet
     capabilities:   00000007
     max_delta_ns:   2147483647
     min_delta_ns:   3352
     mult:           61496110
     shift:          32
     set_next_event: hpet_next_event
     set_mode:       hpet_set_mode
     event_handler:  handle_nextevt_broadcast
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    Cc: john stultz <johnstul@us.ibm.com>
    Cc: Roman Zippel <zippel@linux-m68k.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    289f480a
tick-sched.c 13.8 KB