From: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: <rostedt@goodmis.org>, <fweisbec@gmail.com>, <mingo@redhat.com>,
<acme@ghostprotocols.net>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/8] perf sched: Add trace event for sched wait.
Date: Wed, 16 Apr 2014 19:28:10 +0900 [thread overview]
Message-ID: <534E5B3A.4010109@cn.fujitsu.com> (raw)
In-Reply-To: <20140415135447.GW11096@twins.programming.kicks-ass.net>
On 04/15/2014 10:54 PM, Peter Zijlstra wrote:
> On Tue, Apr 15, 2014 at 09:32:49PM +0900, Dongsheng Yang wrote:
>> But about 3, we have no trace event for it.
> We do, sched_switch() includes the previous task state. Also there's
> tons more than a waitqueue you can get stuck in.
Okey, prev_state is designed to trace No. 3 situation, but it seems
not working well now from my test result. I will look into it and dig
the reason out. Thanx for your help.
> .
>
prev parent reply other threads:[~2014-04-16 11:27 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-15 12:32 [PATCH 0/8] perf sched: Add trace event for sched wait Dongsheng Yang
2014-04-15 12:32 ` [PATCH 1/8] sched & trace: Add a trace event for wait Dongsheng Yang
2014-04-15 13:49 ` Peter Zijlstra
2014-04-16 14:23 ` Steven Rostedt
2014-04-15 12:32 ` [PATCH 2/8] sched/wait: Add trace point before add task into wait queue Dongsheng Yang
2014-04-15 12:32 ` [PATCH 3/8] sched/wait: Use __add_wait_queue{_tail}_exclusive() as possible Dongsheng Yang
2014-04-15 13:49 ` Peter Zijlstra
2014-04-16 9:51 ` Dongsheng Yang
2014-04-15 12:32 ` [PATCH 4/8] sched/core: Skip wakeup when task is already running Dongsheng Yang
2014-04-15 13:53 ` Peter Zijlstra
2014-04-16 10:22 ` Dongsheng Yang
2014-04-22 11:56 ` Dongsheng Yang
2014-04-22 13:23 ` Peter Zijlstra
2014-04-22 17:10 ` bsegall
2014-04-22 17:53 ` Steven Rostedt
2014-04-22 18:18 ` Peter Zijlstra
2014-05-05 6:32 ` Dongsheng Yang
2014-05-05 6:34 ` [PATCH] sched: Move the wakeup tracepoint from ttwu_do_wakeup() to ttwu_activate() Dongsheng Yang
2014-05-05 14:00 ` Steven Rostedt
2014-05-06 0:19 ` Dongsheng Yang
2014-05-06 0:26 ` Dongsheng Yang
2014-05-06 2:06 ` Steven Rostedt
2014-05-06 1:29 ` Dongsheng Yang
2014-05-06 1:52 ` [PATCH] sched: Distinguish sched_wakeup event when wake up a task which did schedule out or not Dongsheng Yang
2014-05-09 0:16 ` Dongsheng Yang
2014-05-09 1:27 ` Steven Rostedt
2014-05-10 15:29 ` Peter Zijlstra
[not found] ` <536F90BE.2080806@gmail.com>
2014-05-11 15:24 ` Fwd: " Dongsheng Yang
2014-05-11 16:35 ` Peter Zijlstra
2014-05-11 18:52 ` Steven Rostedt
2014-05-12 6:47 ` Peter Zijlstra
2014-05-12 8:58 ` Dongsheng Yang
2014-05-12 14:09 ` Steven Rostedt
2014-05-12 15:09 ` Peter Zijlstra
2014-05-12 15:17 ` Steven Rostedt
2014-05-12 15:28 ` Peter Zijlstra
2014-04-15 12:32 ` [PATCH 5/8] perf tools: record and process sched:sched_wait event Dongsheng Yang
2014-04-15 12:32 ` [PATCH 6/8] perf tools: add missing event for perf sched record Dongsheng Yang
2014-04-15 12:32 ` [PATCH 7/8] perf tools: Adapt the TASK_STATE_TO_CHAR_STR to new value in kernel space Dongsheng Yang
2014-04-15 12:32 ` [PATCH 8/8] perf tools: Clarify the output of perf sched map Dongsheng Yang
2014-04-15 13:54 ` [PATCH 0/8] perf sched: Add trace event for sched wait Peter Zijlstra
2014-04-16 10:28 ` Dongsheng Yang [this message]
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