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authorMatt Fleming <matt.fleming@intel.com>2012-05-11 10:58:05 +1000
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-21 23:52:34 -0400
commit60c597513ee93fc6a0b7f2cb83d0aa67d4204cf1 (patch)
tree4e21129e7b649a8cab735a6a247c944cefe25ee7 /arch/microblaze/kernel
parentbcb8c8d0b7131df1b5aad011db33e17f8def5d0b (diff)
downloadlinux-linaro-stable-60c597513ee93fc6a0b7f2cb83d0aa67d4204cf1.tar.gz
microblaze: 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. Acked-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/microblaze/kernel')
-rw-r--r--arch/microblaze/kernel/signal.c12
1 files changed, 2 insertions, 10 deletions
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index f2c13d5a6261..99b970866b29 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -105,10 +105,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ set_current_blocked(&set);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &rval))
goto badframe;
@@ -326,12 +323,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
if (ret)
return ret;
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
- if (!(ka->sa.sa_flags & SA_NODEFER))
- sigaddset(&current->blocked, sig);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ block_sigmask(ka, sig);
return 0;
}