Messages in this thread | | | Date | Sat, 23 Mar 2019 19:14:55 +0900 | From | Masami Hiramatsu <> | Subject | Re: [PATCH v4 00/11] tracing: common error_log for ftrace |
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Hi Tom,
On Fri, 22 Mar 2019 10:34:26 -0500 Tom Zanussi <zanussi@kernel.org> wrote:
> From: Tom Zanussi <tom.zanussi@linux.intel.com> > > Hi, > > This is v4 of the frace error_log patchset. This version adds > Masami's probe events error_log patches and removes the previous > placeholder for that. It also removes the hist trigger extended error > err testcase and replaces it with a basic error_log functionality > testcase, and replaces the error numbering with timestamps, also as > suggested by Masami. Finally, the Documentation and README are both > updated to describe the error_log.
Thank you for updating this series! :)
> > Note: The probe event error_log test cases failed on my Ubuntu system, > due to the >& redirection operator that dash doesn't understand, so I > tacked on a final patch that fixes it for me. If acceptable, feel > free to just merge it with Masami's patch.
Oops, that's my laziness... that should be > /dev/null 2>&1, sorry.
[...] > Below is an example session of a few failed commands and the > corresponding error_log contents: > > # echo > /sys/kernel/debug/tracing/error_log > > # echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="cyclictest"' >> /sys/kernel/debug/tracing/events/sched/sched_wakeup/trigger > # echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="cyclictest"' >> /sys/kernel/debug/tracing/events/sched/sched_wakeup/trigger > -su: echo: write error: Invalid argument > > # cat /sys/kernel/debug/tracing/error_log > [ 217.431858] hist:sched:sched_wakeup: error: Variable already defined > Command: keys=pid:ts0=common_timestamp.usecs if comm=="cyclictest" > ^ >
Yeah, this looks good to me :)
Thank you!
-- Masami Hiramatsu <mhiramat@kernel.org>
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