The initialization of value in function armv8pmu_read_hw_counter()
and armv8pmu_read_counter() seem redundant, as they are soon updated.
So, We can remove them.
Signed-off-by: Qi Liu
---
arch/arm64/kernel/perf_event.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 4658fcf..f594957 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -470,9 +470,8 @@ static inline u64 armv8pmu_read_evcntr(int idx)
static inline u64 armv8pmu_read_hw_counter(struct perf_event *event)
{
int idx = event->hw.idx;
- u64 val = 0;
+ u64 val = armv8pmu_read_evcntr(idx);
- val = armv8pmu_read_evcntr(idx);
if (armv8pmu_event_is_chained(event))
val = (val << 32) | armv8pmu_read_evcntr(idx - 1);
return val;
@@ -520,7 +519,7 @@ static u64 armv8pmu_read_counter(struct perf_event *event)
{
struct hw_perf_event *hwc = >hw;
int idx = hwc->idx;
- u64 value = 0;
+ u64 value;
if (idx == ARMV8_IDX_CYCLE_COUNTER)
value = read_sysreg(pmccntr_el0);
--
2.8.1
