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From: song <chensong@kylinos.cn>
To: xenomai@xenomai.org
Subject: some ftrace events are missed
Date: Sun, 2 Feb 2020 20:22:06 +0800	[thread overview]
Message-ID: <5e7d13d1-ee38-b1ee-3392-4bc19ff8cc4a@kylinos.cn> (raw)

hi guys,

I'm working on an issue with ftrace events, the call stack is like that:

__cobalt_clock_nanosleep
     xnthread_suspend
         xntimer_start
             xnclock_core_ns_to_ticks
                 xntimer_enqueue_and_program
                     xnclock_program_shot()
                         xnclock_core_local_shot
                             ipipe_timer_set


I tried to enable ftrace event with "-f" in cyclictest,however, i can 
only find:

cobalt_clock_entry: clock_irq=4
cobalt_timer_expire: timer=ffffffc07ffd5800
cobalt_clock_exit: clock_irq=4
cobalt_timer_start ....

event traces like trace_cobalt_clock_nanosleep or 
trace_cobalt_thread_suspend are missed, they are all defined in 
cobalt_core.h/cobalt_posix.h and visible in 
/sys/kernel/debugfs/tracing/events/cobalt-core(cobalt-posix).

Does anyone have the same problem before and i would appreciate it if 
you could let me know the way to solve it,many thanks

BR

Song









             reply	other threads:[~2020-02-02 12:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-02 12:22 song [this message]
2020-02-03  7:00 ` some ftrace events are missed Jan Kiszka
2020-02-10 12:48   ` song

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