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author | Oleg Nesterov <oleg@redhat.com> | 2011-04-27 21:04:28 +0200 |
---|---|---|
committer | Oleg Nesterov <oleg@redhat.com> | 2011-04-28 13:01:37 +0200 |
commit | e6a585801b451443480ff66914a522b482457460 (patch) | |
tree | ccca18b6b587244b1400af5c1c6e20fee8483b7a /arch/x86/kernel/signal.c | |
parent | signal: sigprocmask() should do retarget_shared_pending() (diff) | |
download | linux-e6a585801b451443480ff66914a522b482457460.tar.xz linux-e6a585801b451443480ff66914a522b482457460.zip |
x86: signal: handle_signal() should use set_current_blocked()
This is ugly, but if sigprocmask() needs retarget_shared_pending() then
handle signal should follow this logic. In theory it is newer correct to
add the new signals to current->blocked, the signal handler can sleep/etc
so we should notify other threads in case we block the pending signal and
nobody else has TIF_SIGPENDING.
Of course, this change doesn't make signals faster :/
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Matt Fleming <matt.fleming@linux.intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/x86/kernel/signal.c')
-rw-r--r-- | arch/x86/kernel/signal.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index 4fd173cd8e57..5a8f5e68bb61 100644 --- a/arch/x86/kernel/signal.c +++ b/arch/x86/kernel/signal.c @@ -682,6 +682,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs) { + sigset_t blocked; int ret; /* Are we from a system call? */ @@ -741,12 +742,10 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, */ regs->flags &= ~X86_EFLAGS_TF; - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask); + sigorsets(&blocked, ¤t->blocked, &ka->sa.sa_mask); if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + sigaddset(&blocked, sig); + set_current_blocked(&blocked); tracehook_signal_handler(sig, info, ka, regs, test_thread_flag(TIF_SINGLESTEP)); |