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2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/arch/xtensa/kernel/perf_event.c
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@@ -1,12 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Xtensa Performance Monitor Module driver
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  * See Tensilica Debug User's Guide for PMU registers documentation.
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  *
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  * Copyright (C) 2015 Cadence Design Systems Inc.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/interrupt.h>
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@@ -365,9 +362,7 @@
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 	struct xtensa_pmu_events *ev = this_cpu_ptr(&xtensa_pmu_events);
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 	unsigned i;
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-	for (i = find_first_bit(ev->used_mask, XCHAL_NUM_PERF_COUNTERS);
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-	     i < XCHAL_NUM_PERF_COUNTERS;
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-	     i = find_next_bit(ev->used_mask, XCHAL_NUM_PERF_COUNTERS, i + 1)) {
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+	for_each_set_bit(i, ev->used_mask, XCHAL_NUM_PERF_COUNTERS) {
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 		uint32_t v = get_er(XTENSA_PMU_PMSTAT(i));
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 		struct perf_event *event = ev->event[i];
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 		struct hw_perf_event *hwc = &event->hw;