From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linux Trace Kernel <linux-trace-kernel@vger.kernel.org>,
linux-kselftest@vger.kernel.org,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Shuah Khan <shuah@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>
Subject: Re: [PATCH] selftests/tracing: Have trigger-hist-poll.tc use sched_process_exit
Date: Thu, 9 Jul 2026 13:58:32 +0900 [thread overview]
Message-ID: <20260709135832.8aeb6cd3f4e26650a033e8c5@kernel.org> (raw)
In-Reply-To: <20260708163731.566a86aa@gandalf.local.home>
On Wed, 8 Jul 2026 16:37:31 -0400
Steven Rostedt <rostedt@goodmis.org> wrote:
> On Wed, 8 Jul 2026 16:35:39 -0400
> Steven Rostedt <rostedt@goodmis.org> wrote:
>
> > I forgot to mention that I tested this with and without CONFIG_RCU_LAZY.
> > With that config disabled, the test passes. With it enabled, it always
> > fails.
>
> And I also traced it with:
>
> trace-cmd set -p function_graph -l event_hist_poll -O funcgraph-retval
>
> and it shows the sched_process_free being called for the sleep process
> *after* the poll finishes.
Thanks for fix and tested!!
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
>
> -- Steve
--
Masami Hiramatsu (Google) <mhiramat@kernel.org>
prev parent reply other threads:[~2026-07-09 4:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-08 20:34 [PATCH] selftests/tracing: Have trigger-hist-poll.tc use sched_process_exit Steven Rostedt
2026-07-08 20:35 ` Steven Rostedt
2026-07-08 20:37 ` Steven Rostedt
2026-07-09 4:58 ` Masami Hiramatsu [this message]
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