From: Arjan van de Ven <arjan@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Ingo Molnar" <mingo@elte.hu>,
"Kok, Auke-jan H" <auke-jan.h.kok@intel.com>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Frédéric Weisbecker" <fweisbec@gmail.com>
Subject: Re: [PATCH] sched: Provide iowait counters
Date: Mon, 20 Jul 2009 12:31:28 -0700 [thread overview]
Message-ID: <4A64C610.7090406@linux.intel.com> (raw)
In-Reply-To: <1248117369.23509.33.camel@laptop>
Peter Zijlstra wrote:
>
> It might be nice to put a tracepoint there as well, now if there was a
> way to specify perf counter attributes in the TRACE_EVENT() magic so
> that we can feed stuff into perf_tpcounter_event().
>
> TP_perf_addr() -- defaults to 0 when not specified
> TP_perf_count() -- defaults to 1 when not specified.
>
> Steve, Frederic, is there any way to make that happen?
>
> Failing that we could put an actual swcounter in there I suppose.
>
> That way we could profile applications based on IO-wait, which would be
> cool.
it'd be nice if this was also a perfcounter event, no doubt about that
(I already have some usages in mind).... but that'd be a separate patch.
next prev parent reply other threads:[~2009-07-20 19:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-20 18:31 [PATCH] sched: Provide iowait counters Arjan van de Ven
2009-07-20 19:16 ` Peter Zijlstra
2009-07-20 19:31 ` Arjan van de Ven [this message]
2009-07-20 19:42 ` Steven Rostedt
2009-07-20 20:11 ` Peter Zijlstra
2009-07-20 20:26 ` Steven Rostedt
2009-07-20 20:38 ` Peter Zijlstra
2009-07-20 21:03 ` Steven Rostedt
2009-07-25 4:22 ` Andrew Morton
2009-07-25 4:33 ` Arjan van de Ven
2009-07-25 4:40 ` Andrew Morton
2009-07-25 4:48 ` Arjan van de Ven
2009-07-25 5:04 ` Andrew Morton
2009-07-25 6:05 ` Peter Zijlstra
2009-07-25 7:21 ` Andrew Morton
2009-07-25 16:42 ` Arjan van de Ven
2009-07-25 17:41 ` Peter Zijlstra
2009-07-25 17:56 ` Arjan van de Ven
2009-07-25 18:25 ` Arjan van de Ven
2009-08-03 13:21 ` [tip:sched/core] " tip-bot for Arjan van de Ven
2009-09-02 7:00 ` tip-bot for Arjan van de Ven
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