Re: [Patch 3/8] cpu delays

From: Shailabh Nagar
Date: Thu Mar 30 2006 - 11:01:10 EST


Dave Hansen wrote:

On Wed, 2006-03-29 at 19:42 -0500, Shailabh Nagar wrote:


-#ifdef CONFIG_SCHEDSTATS
- memset(&p->sched_info, 0, sizeof(p->sched_info));
+#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
+ if (unlikely(sched_info_on()))
+ memset(&p->sched_info, 0, sizeof(p->sched_info));
#endif


If you unconditionally define sched_info_on(), you can get get rid of
this #ifdef.

+#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
+
+static inline int sched_info_on(void)
+{
+ #ifdef CONFIG_SCHEDSTATS
+ return 1;
+#elif defined(CONFIG_TASK_DELAY_ACCT)
+ return delayacct_on;
+#else
+ return 0;
+#endif
+}

Might as well hide the junk in a header.


Thanks, good point.
The sched_info_on() was wrong anyway and your snippet fixes that and gives the
junk reduction.

Will incorporate.

--Shailabh

-- Dave




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