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[PATCH] relax sig_needs_tasklist()

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handle_stop_signal() does not need tasklist_lock for SIG_KERNEL_STOP_MASK
signals anymore.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Oleg Nesterov 2006-03-28 16:11:22 -08:00 committed by Linus Torvalds
parent 7d7185c818
commit 6108ccd3e2
1 changed files with 1 additions and 2 deletions
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3
kernel/signal.c
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@ -146,8 +146,7 @@ static kmem_cache_t *sigqueue_cachep;
#define sig_kernel_stop(sig) \
(((sig) < SIGRTMIN) && T(sig, SIG_KERNEL_STOP_MASK))
#define sig_needs_tasklist(sig) \
(((sig) < SIGRTMIN) && T(sig, SIG_KERNEL_STOP_MASK | M(SIGCONT)))
#define sig_needs_tasklist(sig) ((sig) == SIGCONT)
#define sig_user_defined(t, signr) \
(((t)->sighand->action[(signr)-1].sa.sa_handler != SIG_DFL) && \