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authorAndreas Mohr <andi@lisas.de>2006-03-27 04:15:20 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 11:44:43 -0500
commit77e4bfbcf071f795b54862455dce8902b3fc29c2 (patch)
treecde3cb39a72de0bb8b42c1c5752f25b3b16bf5ee /kernel/sched.c
parent013d3868143387be99bb0373d49452eaa3c55d41 (diff)
[PATCH] Small schedule() optimization
small schedule() microoptimization. Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index dc599c85a88d..a96a05d23262 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2879,13 +2879,11 @@ asmlinkage void __sched schedule(void)
2879 * schedule() atomically, we ignore that path for now. 2879 * schedule() atomically, we ignore that path for now.
2880 * Otherwise, whine if we are scheduling when we should not be. 2880 * Otherwise, whine if we are scheduling when we should not be.
2881 */ 2881 */
2882 if (likely(!current->exit_state)) { 2882 if (unlikely(in_atomic() && !current->exit_state)) {
2883 if (unlikely(in_atomic())) { 2883 printk(KERN_ERR "BUG: scheduling while atomic: "
2884 printk(KERN_ERR "BUG: scheduling while atomic: " 2884 "%s/0x%08x/%d\n",
2885 "%s/0x%08x/%d\n", 2885 current->comm, preempt_count(), current->pid);
2886 current->comm, preempt_count(), current->pid); 2886 dump_stack();
2887 dump_stack();
2888 }
2889 } 2887 }
2890 profile_hit(SCHED_PROFILING, __builtin_return_address(0)); 2888 profile_hit(SCHED_PROFILING, __builtin_return_address(0));
2891 2889