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perf: Fix SIGIO handling
[firefly-linux-kernel-4.4.55.git]
/
kernel
/
events
/
core.c
diff --git
a/kernel/events/core.c
b/kernel/events/core.c
index c09767f7db3e20e4a510c7a51fba7d662e967659..d863b3c057bba8fe4add3e774a3bb86083c493a5 100644
(file)
--- a/
kernel/events/core.c
+++ b/
kernel/events/core.c
@@
-5028,6
+5028,14
@@
static int __perf_event_overflow(struct perf_event *event, int nmi,
else
perf_event_output(event, nmi, data, regs);
+ if (event->fasync && event->pending_kill) {
+ if (nmi) {
+ event->pending_wakeup = 1;
+ irq_work_queue(&event->pending);
+ } else
+ perf_event_wakeup(event);
+ }
+
return ret;
}