From: Ingo Molnar <mingo@elte.hu>
To: Carsten Emde <C.Emde@osadl.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org,
And rew Morton <akpm@linux-foundation.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH 2/4] tracing/sched: Fix task states in sched switch event
Date: Thu, 13 May 2010 15:35:39 +0200 [thread overview]
Message-ID: <20100513133539.GA17107@elte.hu> (raw)
In-Reply-To: <RYmXFZH5FML2.rJxWwvD3@ce.dyn.web-alm.net>
* Carsten Emde <C.Emde@osadl.org> wrote:
> Hi Ingo,
>
> > Hm, this is totally unreadable. What does 'TASK_STATE_X' mean??
> Would this be better?
> +#define MAKE_TASK_STATE_STRING(num) TASK_STATE_##num " (" DESCR_TASK_STATE_##num ")"
> static const char *task_state_array[] = {
> - "R (running)", /* 0 */
> - "S (sleeping)", /* 1 */
> - "D (disk sleep)", /* 2 */
> - "T (stopped)", /* 4 */
> - "t (tracing stop)", /* 8 */
> - "Z (zombie)", /* 16 */
> - "X (dead)", /* 32 */
> - "x (dead)", /* 64 */
> - "K (wakekill)", /* 128 */
> - "W (waking)", /* 256 */
> + MAKE_TASK_STATE_STRING(0),
> + MAKE_TASK_STATE_STRING(1),
> + MAKE_TASK_STATE_STRING(2),
> + MAKE_TASK_STATE_STRING(4),
> + MAKE_TASK_STATE_STRING(8),
> + MAKE_TASK_STATE_STRING(16),
> + MAKE_TASK_STATE_STRING(32),
> + MAKE_TASK_STATE_STRING(64),
> + MAKE_TASK_STATE_STRING(128),
> + MAKE_TASK_STATE_STRING(256)
The whole enumeration there is pointless in that .c file - it tells nothing to
the code reader.
If it cannot be expressed in a meaningful way then introduce
TASK_STATE_STRINGS_INIT construct that is defined next to the strings (in a .h
file or so) - that way it's a coherent whole.
Thanks,
Ingo
next prev parent reply other threads:[~2010-05-13 13:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-13 11:10 Carsten Emde
2010-05-13 13:35 ` Ingo Molnar [this message]
2010-05-13 15:21 ` Steven Rostedt
2010-05-25 12:33 ` Carsten Emde
-- strict thread matches above, loose matches on Subject: below --
2010-05-13 1:21 [PATCH 0/4] [GIT PULL] tracing: updates Steven Rostedt
2010-05-13 1:21 ` [PATCH 2/4] tracing/sched: Fix task states in sched switch event Steven Rostedt
2010-05-13 6:15 ` Ingo Molnar
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