signal: add block_sigmask() for adding sigmask to current->blocked
commit5e6292c0f28f03dfdb8ea3d685f0b838a23bfba4
authorMatt Fleming <matt.fleming@intel.com>
Tue, 10 Jan 2012 23:11:17 +0000 (10 15:11 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Jan 2012 00:30:54 +0000 (10 16:30 -0800)
tree8684833680054ab48f9da2bbc36c93e3d00a3391
parentf350b1778f1b7713ef54fbc7e079e09e2fe098b9
signal: add block_sigmask() for adding sigmask to current->blocked

Abstract the code sequence for adding a signal handler's sa_mask to
current->blocked because the sequence is identical for all architectures.
Furthermore, in the past some architectures actually got this code wrong,
so introduce a wrapper that all architectures can use.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/x86/kernel/signal.c
include/linux/signal.h
kernel/signal.c