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powerpc: perf: Fix frequency calculation for overflowing counters
[firefly-linux-kernel-4.4.55.git]
/
arch
/
powerpc
/
kernel
/
perf_event.c
diff --git
a/arch/powerpc/kernel/perf_event.c
b/arch/powerpc/kernel/perf_event.c
index 5674807057899cd09dc366d128b1769afc6cd3e9..ab6f6beadb5721ccf584b0fa4a9ba53155100674 100644
(file)
--- a/
arch/powerpc/kernel/perf_event.c
+++ b/
arch/powerpc/kernel/perf_event.c
@@
-1212,6
+1212,7
@@
static void record_and_restart(struct perf_event *event, unsigned long val,
if (left <= 0)
left = period;
record = 1;
+ event->hw.last_period = event->hw.sample_period;
}
if (left < 0x80000000LL)
val = 0x80000000LL - left;