Re: [PATCH 01/18] tracing: Add function based events
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- Subject: Re: [PATCH 01/18] tracing: Add function based events
- From: Steven Rostedt <rostedt@xxxxxxxxxxx>
- Date: Mon, 5 Feb 2018 10:00:50 -0500
- Cc: linux-kernel@xxxxxxxxxxxxxxx, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx>, linux-rt-users@xxxxxxxxxxxxxxx, linux-trace-users@xxxxxxxxxxxxxxx, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, Clark Williams <williams@xxxxxxxxxx>, Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
- In-reply-to: <20180205082423.GB1253@krava>
- References: <20180202230458.840252014@goodmis.org> <20180202231017.160509978@goodmis.org> <20180205082423.GB1253@krava>
On Mon, 5 Feb 2018 09:24:23 +0100
Jiri Olsa <jolsa@xxxxxxxxxx> wrote:
> should this be done under 'func_event_mutex' ?
Probably.
>
> I tried and crashed the system by running 2 scripts with:
>
> echo 'ip_rcv(u64 skb, u64 dev)' > /sys/kernel/debug/tracing/function_events
> echo 'SyS_openat(int dfd, string buf, x32 flags, x32 mode)' >> /sys/kernel/debug/tracing/function_events
> echo 'SyS_open(x8[32] buf, x32 flags, x32 mode)' >> /sys/kernel/debug/tracing/function_events
>
Thanks for testing. I'll fix.
-- Steve
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