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[PATCH] delay accounting: temporarily enable by default

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Enable delay accounting by default so that feature gets coverage testing
without requiring special measures.

Earlier, it was off by default and had to be enabled via a boot time param.
 This patch reverses the default behaviour to improve coverage testing.  It
can be removed late in the kernel development cycle if its believed users
shouldn't have to incur any cost if they don't want delay accounting.  Or
it can be retained forever if the utility of the stats is deemed common
enough to warrant keeping the feature on.

Signed-off-by: Shailabh Nagar <nagar@watson.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Shailabh Nagar 2006-07-30 03:03:11 -07:00 • committed by Linus Torvalds
parent d94a041519
commit 163ecdff06
4 changed files with 14 additions and 12 deletions
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4
include/linux/delayacct.h
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@ -55,7 +55,7 @@ static inline void delayacct_tsk_init(struct task_struct *tsk)
{
/* reinitialize in case parent's non-null pointer was dup'ed*/
tsk->delays = NULL;
if (unlikely(delayacct_on))
if (delayacct_on)
__delayacct_tsk_init(tsk);
}
@ -80,7 +80,7 @@ static inline void delayacct_blkio_end(void)
static inline int delayacct_add_tsk(struct taskstats *d,
struct task_struct *tsk)
{
if (likely(!delayacct_on) || !tsk->delays)
if (!delayacct_on || !tsk->delays)
return 0;
return __delayacct_add_tsk(d, tsk);
}