From: Ingo Molnar <mingo@elte.hu>
To: "Török Edwin" <edwintorok@gmail.com>
Cc: srostedt@redhat.com, a.p.zijlstra@chello.nl,
sandmann@daimi.au.dk, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] Add support for userspace stacktraces in tracing/iter_ctrl
Date: Mon, 27 Oct 2008 17:03:48 +0100 [thread overview]
Message-ID: <20081027160348.GT5704@elte.hu> (raw)
In-Reply-To: <1223817124-27239-3-git-send-email-edwintorok@gmail.com>
* Török Edwin <edwintorok@gmail.com> wrote:
> Usage example:
> mount -t debugfs nodev /sys/kernel/debug
> cd /sys/kernel/debug/tracing
> echo userstacktrace >iter_ctrl
> echo sched_switch >current_tracer
> echo 1 >tracing_enabled
> .... run application ...
> echo 0 >tracing_enabled
>
> Then read one of 'trace','latency_trace','trace_pipe'
okay, this makes quite a bit of sense - and sysprof already kind of
walks down into the user-space stack. (and so does oprofile, if asked)
Could you send this independently of the lock contention tracing
patches perhaps?
Ingo
next prev parent reply other threads:[~2008-10-27 16:04 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-12 13:11 [PATCH 0/4] ftrace: add userspace stacktrace support and semaphore-latency tracer Török Edwin
2008-10-12 13:12 ` Török Edwin
2008-10-12 13:12 ` [PATCH 1/4] Add support for userspace stacktraces in tracing/iter_ctrl Török Edwin
2008-10-12 13:31 ` Frédéric Weisbecker
2008-10-12 13:53 ` Török Edwin
2008-10-13 8:02 ` Frédéric Weisbecker
2008-10-26 4:05 ` Frédéric Weisbecker
2008-10-26 7:03 ` Török Edwin
2008-10-26 15:06 ` Frédéric Weisbecker
2008-10-26 13:15 ` Frank Ch. Eigler
2008-10-26 13:29 ` Peter Zijlstra
2008-10-26 13:38 ` Török Edwin
2008-10-26 13:49 ` Frank Ch. Eigler
2008-10-27 16:03 ` Ingo Molnar [this message]
2008-10-27 16:16 ` Török Edwin
2008-10-12 13:12 ` [PATCH 2/4] Identify which executable object the userspace address belongs to Török Edwin
2008-10-12 13:12 ` [PATCH 3/4] add tracepoints in rwsem Török Edwin
2008-10-12 13:12 ` [PATCH 4/4] Implement semaphore latency tracer Török Edwin
2008-10-12 19:13 ` Peter Zijlstra
2008-10-12 20:10 ` Török Edwin
2008-10-22 15:28 ` Ingo Molnar
2008-10-22 15:41 ` Török Edwin
2008-10-22 15:48 ` Ingo Molnar
2008-10-22 17:22 ` Peter Zijlstra
2008-10-22 17:25 ` Török Edwin
2008-10-12 18:25 ` [PATCH 0/4] ftrace: add userspace stacktrace support and semaphore-latency tracer Steven Rostedt
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