[PATCH 2/6] relax sig_needs_tasklist()

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

Signed-off-by: Oleg Nesterov <[email protected]>

--- 2.6.16-rc3/kernel/signal.c~2_RELAX	2006-02-23 00:36:49.000000000 +0300
+++ 2.6.16-rc3/kernel/signal.c	2006-02-23 01:22:45.000000000 +0300
@@ -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) &&	\
-
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