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Commit 6108ccd3 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds
Browse files

[PATCH] relax sig_needs_tasklist() 



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

Signed-off-by: default avatarOleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 7d7185c8

kernel/signal.c

+1 −2
Original line number Diff line number Diff line
@@ -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) &&	\