powerpc: Use set_current_blocked() and block_sigmask()
authorMatt Fleming <matt.fleming@intel.com>
Tue, 14 Feb 2012 01:40:59 +0000 (01:40 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 7 Mar 2012 06:06:09 +0000 (17:06 +1100)
commita2007ce8447c9a71d9d694ddcdf64f9dbbf022ff
tree03da8a35fdefdbea1ccd33d17faa71a1f0388b62
parenta2234b4baefe2a2742b5fa8839be1ab1aca39057
powerpc: Use set_current_blocked() and block_sigmask()

As described in e6fa16ab ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check whether the signal we're about to block
is pending in the shared queue.

Also, use the new helper function introduced in commit 5e6292c0f28f
("signal: add block_sigmask() for adding sigmask to current->blocked")
which centralises the code for updating current->blocked after
successfully delivering a signal and reduces the amount of duplicate
code across architectures. In the past some architectures got this
code wrong, so using this helper function should stop that from
happening again.

Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/signal.c
arch/powerpc/kernel/signal_32.c