* [PATCH 2/2] detach_pid(): eliminate one find_pid() call
@ 2004-10-01 11:21 Oleg Nesterov
0 siblings, 0 replies; only message in thread
From: Oleg Nesterov @ 2004-10-01 11:21 UTC (permalink / raw)
To: linux-kernel; +Cc: Kirill Korotaev, Andrew Morton, Linus Torvalds
Hello.
Now there is no point in calling costly find_pid(type)
if __detach_pid(type) returned non zero value.
Oleg.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
--- 2.6.9-rc3/kernel/pid.c~ Fri Oct 1 13:29:14 2004
+++ 2.6.9-rc3/kernel/pid.c Fri Oct 1 15:12:32 2004
@@ -206,15 +206,16 @@ static fastcall int __detach_pid(task_t
void fastcall detach_pid(task_t *task, enum pid_type type)
{
- int nr;
+ int tmp, nr;
nr = __detach_pid(task, type);
if (!nr)
return;
- for (type = 0; type < PIDTYPE_MAX; ++type)
- if (find_pid(type, nr))
+ for (tmp = PIDTYPE_MAX; --tmp >= 0; )
+ if (tmp != type && find_pid(tmp, nr))
return;
+
free_pidmap(nr);
}
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2004-10-01 11:21 [PATCH 2/2] detach_pid(): eliminate one find_pid() call Oleg Nesterov
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