perf tools: Update powerpc's syscall.tbl copy from the kernel sources

[linux-2.6-microblaze.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index c371706..5736c55 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2555,14 +2555,12 @@ bool get_signal(struct ksignal *ksig)
         * that the arch handlers don't all have to do it. If we get here
         * without TIF_SIGPENDING, just exit after running signal work.
         */
-#ifdef TIF_NOTIFY_SIGNAL
        if (!IS_ENABLED(CONFIG_GENERIC_ENTRY)) {
                if (test_thread_flag(TIF_NOTIFY_SIGNAL))
                        tracehook_notify_signal();
                if (!task_sigpending(current))
                        return false;
        }
-#endif
 
        if (unlikely(uprobe_deny_signal()))
                return false;
@@ -2576,26 +2574,6 @@ bool get_signal(struct ksignal *ksig)
 
 relock:
        spin_lock_irq(&sighand->siglock);
-       /*
-        * Make sure we can safely read ->jobctl() in task_work add. As Oleg
-        * states:
-        *
-        * It pairs with mb (implied by cmpxchg) before READ_ONCE. So we
-        * roughly have
-        *
-        *      task_work_add:                          get_signal:
-        *      STORE(task->task_works, new_work);      STORE(task->jobctl);
-        *      mb();                                   mb();
-        *      LOAD(task->jobctl);                     LOAD(task->task_works);
-        *
-        * and we can rely on STORE-MB-LOAD [ in task_work_add].
-        */
-       smp_store_mb(current->jobctl, current->jobctl & ~JOBCTL_TASK_WORK);
-       if (unlikely(current->task_works)) {
-               spin_unlock_irq(&sighand->siglock);
-               task_work_run();
-               goto relock;
-       }
 
        /*
         * Every stopped thread goes here after wakeup. Check to see if