From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Leonardo Bras <leobras@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Yury Norov <yury.norov@gmail.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Nadav Amit <namit@vmware.com>,
Zhen Lei <thunder.leizhen@huawei.com>,
Chen Zhongjin <chenzhongjin@huawei.com>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [RFC PATCH 1/1] smp: Add tracepoints for functions called with smp_call_function*()
Date: Thu, 6 Apr 2023 10:15:01 +0200 [thread overview]
Message-ID: <20230406081501.pS4ZnWaK@linutronix.de> (raw)
In-Reply-To: <20230406075718.68672-1-leobras@redhat.com>
On 2023-04-06 04:57:18 [-0300], Leonardo Bras wrote:
> When running RT workloads in isolated CPUs, many cases of deadline misses
> are caused by remote CPU requests such as smp_call_function*().
>
> For those cases, having the names of those functions running around the
> deadline miss moment could help finding a target for the next improvements.
>
> Add tracepoints for acquiring the funtion name & argument before entry and
> after exitting the called function.
>
> Signed-off-by: Leonardo Bras <leobras@redhat.com>
Check
https://lore.kernel.org/20230307143558.294354-1-vschneid@redhat.com
Sebastian
next prev parent reply other threads:[~2023-04-06 8:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-06 7:57 [RFC PATCH 1/1] smp: Add tracepoints for functions called with smp_call_function*() Leonardo Bras
2023-04-06 8:15 ` Sebastian Andrzej Siewior [this message]
2023-04-06 8:42 ` Leonardo Brás
2023-04-06 13:49 ` Steven Rostedt
2023-04-19 4:04 ` Leonardo Brás
2023-04-06 9:55 ` Peter Zijlstra
2023-04-19 3:45 ` Leonardo Brás
2023-05-03 4:23 ` Leonardo Brás
2023-05-03 14:59 ` Peter Zijlstra
2023-05-03 15:53 ` Leonardo Bras Soares Passos
2023-05-04 11:59 ` Valentin Schneider
2023-05-04 13:34 ` Steven Rostedt
2023-05-04 15:01 ` Peter Zijlstra
2023-05-10 20:27 ` Leonardo Brás
2023-05-10 22:18 ` Leonardo Bras Soares Passos
2023-05-10 23:05 ` Leonardo Bras Soares Passos
2023-05-11 8:13 ` Valentin Schneider
2023-05-11 9:25 ` Leonardo Bras Soares Passos
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