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Message-ID: <20211122112106.5fa656bc@gandalf.local.home>
Date: Mon, 22 Nov 2021 11:21:06 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Marco Elver <elver@...gle.com>
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Subject: Re: [PATCH v2 0/2] Introduce the pkill_on_warn parameter
On Sat, 20 Nov 2021 13:17:08 +0100
Marco Elver <elver@...gle.com> wrote:
> I think userspace would want something other than perf tool to handle it
> of course. There are several options:
>
> 1. Open trace pipe to be notified (/sys/kernel/tracing/trace_pipe).
> This already includes the pid.
I would suggest using /sys/kernel/tracing/per_cpu/cpu*/trace_pipe_raw
and use libtracefs[1] to read it.
-- Steve
[1] https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git/
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