From: Oleg Nesterov <oleg@tv-sign.ru>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
"Paul E. McKenney" <paulmck@us.ibm.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
David Howells <dhowells@redhat.com>
Subject: [PATCH 2/6] relax sig_needs_tasklist()
Date: Thu, 23 Feb 2006 02:04:40 +0300 [thread overview]
Message-ID: <43FCEE08.7923E800@tv-sign.ru> (raw)
handle_stop_signal() does not need tasklist_lock for
SIG_KERNEL_STOP_MASK signals anymore.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
--- 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) && \
next reply other threads:[~2006-02-22 23:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-22 23:04 Oleg Nesterov [this message]
2006-02-25 16:17 ` [PATCH 2/6] relax sig_needs_tasklist() Eric W. Biederman
2006-02-25 20:06 ` Oleg Nesterov
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