From: Peter Zijlstra <peterz@infradead.org>
To: Andrew Vagin <avagin@openvz.org>
Cc: Arun Sharma <asharma@fb.com>, Oleg Strikov <OSTRIKOV@nvidia.com>,
Steven Rostedt <rostedt@goodmis.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC] [PATCH 0/5] Teach perf tool to profile sleep times (V4)
Date: Mon, 04 Jun 2012 14:50:10 +0200 [thread overview]
Message-ID: <1338814210.28282.47.camel@twins> (raw)
In-Reply-To: <1338813658.28282.43.camel@twins>
On Mon, 2012-06-04 at 14:40 +0200, Peter Zijlstra wrote:
> + if (task) {
> + struct perf_event_context *ctx;
> +
> + rcu_read_lock();
> + ctx = rcu_dereference(task->perf_event_ctxp[perf_sw_context]);
> + list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
Ah, this needs a little something like the below:
if (!(event->attr.type == PERF_TYPE_TRACEPOINT &&
event->attr.config == $something))
continue;
Not exactly sure where we hid the tracepoint_id at this point..
> + if (perf_tp_event_match(event, &data, regs))
> + perf_swevent_event(event, count, &data, regs);
> + }
> + rcu_read_unlock();
> + }
next prev parent reply other threads:[~2012-06-04 12:50 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-04 8:09 [RFC] [PATCH 0/5] Teach perf tool to profile sleep times (V4) Andrew Vagin
2012-06-04 8:09 ` [PATCH 1/5] sched: event: add trace events when a task starts executing on a cpu Andrew Vagin
2012-06-04 8:09 ` [PATCH 2/5] sched: send the event sched_switch before perf_event_task_sched_out Andrew Vagin
2012-06-04 8:09 ` [PATCH 3/5] sched: save a previous state on task_struct Andrew Vagin
2012-06-04 8:09 ` [PATCH 4/5] perf: teach "perf inject" to work with files Andrew Vagin
2012-06-04 8:09 ` [PATCH 5/5] perf: teach perf inject to merge sched_switch* events for profiling sleep times Andrew Vagin
2012-06-04 12:40 ` [RFC] [PATCH 0/5] Teach perf tool to profile sleep times (V4) Peter Zijlstra
2012-06-04 12:50 ` Peter Zijlstra [this message]
2012-06-04 13:46 ` Steven Rostedt
2012-06-04 17:01 ` Arun Sharma
2012-06-04 20:52 ` Peter Zijlstra
2012-06-06 8:32 ` Ingo Molnar
2012-06-12 13:15 ` Andrew Wagin
2012-06-12 17:46 ` Peter Zijlstra
2012-06-04 17:03 ` Arun Sharma
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