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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-04-30 00:52:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:35 -0700 |
| commit | db51aeccd7097ce19a522a4c5ff91c320f870e2b (patch) | |
| tree | 373bdfb55d1d90c04d53d4a419bcd156fe7f054c /kernel/signal.c | |
| parent | 08d2c30ce98d274137f12b0a9b9c74137455922c (diff) | |
| download | kernel_samsung_smdk4412-db51aeccd7097ce19a522a4c5ff91c320f870e2b.tar.gz kernel_samsung_smdk4412-db51aeccd7097ce19a522a4c5ff91c320f870e2b.tar.bz2 kernel_samsung_smdk4412-db51aeccd7097ce19a522a4c5ff91c320f870e2b.zip | |
signals: microoptimize the usage of ->curr_target
Suggested by Roland McGrath.
Initialize signal->curr_target in copy_signal(). This way ->curr_target is
never == NULL, we can kill the check in __group_complete_signal's hot path.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 17859f0d841..0298bd3d431 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -863,10 +863,6 @@ __group_complete_signal(int sig, struct task_struct *p) * Otherwise try to find a suitable thread. */ t = signal->curr_target; - if (t == NULL) - /* restart balancing at this thread */ - t = signal->curr_target = p; - while (!wants_signal(sig, t)) { t = next_thread(t); if (t == signal->curr_target) |