perf tools: Use dedicated non-atomic clear/set bit helpers

Use the dedicated non-atomic helpers for {clear,set}_bit() and their
test variants, i.e. the double-underscore versions. Depsite being
defined in atomic.h, and despite the kernel versions being atomic in the
kernel, tools' {clear,set}_bit() helpers aren't actually atomic. Move
to the double-underscore versions so that the versions that are expected
to be atomic (for kernel developers) can be made atomic without
affecting users that don't want atomic operations.

No functional change intended.

Signed-off-by: Sean Christopherson <[e-mail]>
Acked-by: Namhyung Kim <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Andy Shevchenko <[e-mail]>
Cc: James Morse <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Marc Zyngier <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Oliver Upton <[e-mail]>
Cc: Paolo Bonzini <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Rasmus Villemoes <[e-mail]>
Cc: Sean Christopherson <[e-mail]>
Cc: Suzuki Poulouse <[e-mail]>
Cc: Yury Norov <[e-mail]>
Cc: alexandru elisei <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Link: http://lore.kernel.org/lkml/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/bench/find-bit-bench.c

···
 		bitmap_zero(to_test, num_bits);
 		skip = num_bits / set_bits;
 		for (i = 0; i < num_bits; i += skip)
-			set_bit(i, to_test);
+			__set_bit(i, to_test);
 
 		for (i = 0; i < outer_iterations; i++) {
 			old = accumulator;

tools/perf/builtin-c2c.c

···
 		      "WARNING: no sample cpu value"))
 		return;
 
-	set_bit(sample->cpu, c2c_he->cpuset);
+	__set_bit(sample->cpu, c2c_he->cpuset);
 }
 
 static void c2c_he__set_node(struct c2c_hist_entry *c2c_he,
···
 	if (WARN_ONCE(node < 0, "WARNING: failed to find node\n"))
 		return;
 
-	set_bit(node, c2c_he->nodeset);
+	__set_bit(node, c2c_he->nodeset);
 
 	if (c2c_he->paddr != sample->phys_addr) {
 		c2c_he->paddr_cnt++;
···
 			continue;
 
 		perf_cpu_map__for_each_cpu(cpu, idx, map) {
-			set_bit(cpu.cpu, set);
+			__set_bit(cpu.cpu, set);
 
 			if (WARN_ONCE(cpu2node[cpu.cpu] != -1, "node/cpu topology bug"))
 				return -EINVAL;

tools/perf/builtin-kwork.c

···
 	list_add_tail(&page->list, &kwork->atom_page_list);
 
 found_atom:
-	set_bit(i, page->bitmap);
+	__set_bit(i, page->bitmap);
 	atom->time = sample->time;
 	atom->prev = NULL;
 	atom->page_addr = page;
···
 	if (atom->prev != NULL)
 		atom_free(atom->prev);
 
-	clear_bit(atom->bit_inpage,
-		  ((struct kwork_atom_page *)atom->page_addr)->bitmap);
+	__clear_bit(atom->bit_inpage,
+		    ((struct kwork_atom_page *)atom->page_addr)->bitmap);
 }
 
 static void atom_del(struct kwork_atom *atom)

tools/perf/builtin-record.c

···
 		/* Return ENODEV is input cpu is greater than max cpu */
 		if ((unsigned long)cpu.cpu > mask->nbits)
 			return -ENODEV;
-		set_bit(cpu.cpu, mask->bits);
+		__set_bit(cpu.cpu, mask->bits);
 	}
 
 	return 0;
···
 	pr_debug("nr_threads: %d\n", rec->nr_threads);
 
 	for (t = 0; t < rec->nr_threads; t++) {
-		set_bit(perf_cpu_map__cpu(cpus, t).cpu, rec->thread_masks[t].maps.bits);
-		set_bit(perf_cpu_map__cpu(cpus, t).cpu, rec->thread_masks[t].affinity.bits);
+		__set_bit(perf_cpu_map__cpu(cpus, t).cpu, rec->thread_masks[t].maps.bits);
+		__set_bit(perf_cpu_map__cpu(cpus, t).cpu, rec->thread_masks[t].affinity.bits);
 		if (verbose) {
 			pr_debug("thread_masks[%d]: ", t);
 			mmap_cpu_mask__scnprintf(&rec->thread_masks[t].maps, "maps");

tools/perf/builtin-sched.c

···
 
 	if (sched->map.comp) {
 		cpus_nr = bitmap_weight(sched->map.comp_cpus_mask, MAX_CPUS);
-		if (!test_and_set_bit(this_cpu.cpu, sched->map.comp_cpus_mask)) {
+		if (!__test_and_set_bit(this_cpu.cpu, sched->map.comp_cpus_mask)) {
 			sched->map.comp_cpus[cpus_nr++] = this_cpu;
 			new_cpu = true;
 		}

tools/perf/tests/bitmap.c

···
 
 	if (map && bm) {
 		for (i = 0; i < perf_cpu_map__nr(map); i++)
-			set_bit(perf_cpu_map__cpu(map, i).cpu, bm);
+			__set_bit(perf_cpu_map__cpu(map, i).cpu, bm);
 	}
 
 	if (map)

tools/perf/tests/mem2node.c

···
 		int i;
 
 		perf_cpu_map__for_each_cpu(cpu, i, map)
-			set_bit(cpu.cpu, bm);
+			__set_bit(cpu.cpu, bm);
 	}
 
 	if (map)

tools/perf/util/affinity.c

···
 		return;
 
 	a->changed = true;
-	set_bit(cpu, a->sched_cpus);
+	__set_bit(cpu, a->sched_cpus);
 	/*
 	 * We ignore errors because affinity is just an optimization.
 	 * This could happen for example with isolated CPUs or cpusets.
 	 * In this case the IPIs inside the kernel's perf API still work.
 	 */
 	sched_setaffinity(0, cpu_set_size, (cpu_set_t *)a->sched_cpus);
-	clear_bit(cpu, a->sched_cpus);
+	__clear_bit(cpu, a->sched_cpus);
 }
 
 static void __affinity__cleanup(struct affinity *a)

tools/perf/util/header.c

···
 
 void perf_header__set_feat(struct perf_header *header, int feat)
 {
-	set_bit(feat, header->adds_features);
+	__set_bit(feat, header->adds_features);
 }
 
 void perf_header__clear_feat(struct perf_header *header, int feat)
 {
-	clear_bit(feat, header->adds_features);
+	__clear_bit(feat, header->adds_features);
 }
 
 bool perf_header__has_feat(const struct perf_header *header, int feat)
···
 	rewinddir(dir);
 
 	for_each_memory(phys, dir) {
-		set_bit(phys, n->set);
+		__set_bit(phys, n->set);
 	}
 
 	closedir(dir);
···
 
 		if (!test_bit(HEADER_HOSTNAME, header->adds_features)) {
 			bitmap_zero(header->adds_features, HEADER_FEAT_BITS);
-			set_bit(HEADER_BUILD_ID, header->adds_features);
+			__set_bit(HEADER_BUILD_ID, header->adds_features);
 		}
 	}
 

tools/perf/util/mmap.c

···
 			pr_err("Failed to allocate node mask for mbind: error %m\n");
 			return -1;
 		}
-		set_bit(node_index, node_mask);
+		__set_bit(node_index, node_mask);
 		if (mbind(data, mmap_len, MPOL_BIND, node_mask, node_index + 1 + 1, 0)) {
 			pr_err("Failed to bind [%p-%p] AIO buffer to node %lu: error %m\n",
 				data, data + mmap_len, node_index);
···
 	for (idx = 0; idx < nr_cpus; idx++) {
 		cpu = perf_cpu_map__cpu(cpu_map, idx); /* map c index to online cpu index */
 		if (cpu__get_node(cpu) == node)
-			set_bit(cpu.cpu, mask->bits);
+			__set_bit(cpu.cpu, mask->bits);
 	}
 }
 
···
 	if (mp->affinity == PERF_AFFINITY_NODE && cpu__max_node() > 1)
 		build_node_mask(cpu__get_node(map->core.cpu), &map->affinity_mask);
 	else if (mp->affinity == PERF_AFFINITY_CPU)
-		set_bit(map->core.cpu.cpu, map->affinity_mask.bits);
+		__set_bit(map->core.cpu.cpu, map->affinity_mask.bits);
 
 	return 0;
 }

tools/perf/util/pmu.c

···
 
 	memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS));
 	for (b = from; b <= to; b++)
-		set_bit(b, bits);
+		__set_bit(b, bits);
 }
 
 void perf_pmu__del_formats(struct list_head *formats)

tools/perf/util/scripting-engines/trace-event-perl.c

···
 
 	sprintf(handler, "%s::%s", event->system, event->name);
 
-	if (!test_and_set_bit(event->id, events_defined))
+	if (!__test_and_set_bit(event->id, events_defined))
 		define_event_symbols(event, handler, event->print_fmt.args);
 
 	s = nsecs / NSEC_PER_SEC;

tools/perf/util/scripting-engines/trace-event-python.c

···
 
 	sprintf(handler_name, "%s__%s", event->system, event->name);
 
-	if (!test_and_set_bit(event->id, events_defined))
+	if (!__test_and_set_bit(event->id, events_defined))
 		define_event_symbols(event, handler_name, event->print_fmt.args);
 
 	handler = get_handler(handler_name);

tools/perf/util/session.c

···
 			goto out_delete_map;
 		}
 
-		set_bit(cpu.cpu, cpu_bitmap);
+		__set_bit(cpu.cpu, cpu_bitmap);
 	}
 
 	err = 0;

tools/perf/util/svghelper.c

···
 			break;
 		}
 
-		set_bit(c.cpu, cpumask_bits(b));
+		__set_bit(c.cpu, cpumask_bits(b));
 	}
 
 	perf_cpu_map__put(m);