[PATCH] kernel: perf_event: use for_each_set_bit() to simplify the code

[Xu Wang]

Using for_each_set_bit() to simplify the code.

Signed-off-by: Xu Wang <vu...@iscas.ac.cn>
---
 arch/xtensa/kernel/perf_event.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/xtensa/kernel/perf_event.c b/arch/xtensa/kernel/perf_event.c
index 9bae79f70301..99fcd63ce597 100644
--- a/arch/xtensa/kernel/perf_event.c
+++ b/arch/xtensa/kernel/perf_event.c
@@ -362,9 +362,7 @@ irqreturn_t xtensa_pmu_irq_handler(int irq, void *dev_id)
        struct xtensa_pmu_events *ev = this_cpu_ptr(&xtensa_pmu_events);
        unsigned i;
 
-       for (i = find_first_bit(ev->used_mask, XCHAL_NUM_PERF_COUNTERS);
-            i < XCHAL_NUM_PERF_COUNTERS;
-            i = find_next_bit(ev->used_mask, XCHAL_NUM_PERF_COUNTERS, i + 1)) {
+       for_each_set_bit(i, ev->used_mask, XCHAL_NUM_PERF_COUNTERS) {
                uint32_t v = get_er(XTENSA_PMU_PMSTAT(i));
                struct perf_event *event = ev->event[i];
                struct hw_perf_event *hwc = &event->hw;
-- 
2.17.1