From ee769ebbe9e5fc7219e979fb7c5ed5bb5722649e Mon Sep 17 00:00:00 2001 From: Xu Wang Date: Wed, 8 Jul 2020 06:20:23 +0000 Subject: xtensa: simplify xtensa_pmu_irq_handler Use for_each_set_bit() instead of open-coding it to simplify the code. Signed-off-by: Xu Wang Message-Id: <20200708062023.7986-1-vulab@iscas.ac.cn> Signed-off-by: Max Filippov --- arch/xtensa/kernel/perf_event.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'arch/xtensa/kernel') 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; -- cgit v1.2.3