perf cpumap: Use for each loop

Improve readability in perf_pmu__cpus_match() by using
perf_cpu_map__for_each_cpu().

Signed-off-by: Ian Rogers <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Alexey Bayduraev <[e-mail]>
Cc: Andi Kleen <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Cc: André Almeida <[e-mail]>
Cc: Andy Shevchenko <[e-mail]>
Cc: Darren Hart <[e-mail]>
Cc: Davidlohr Bueso <[e-mail]>
Cc: Dmitriy Vyukov <[e-mail]>
Cc: Eric Dumazet <[e-mail]>
Cc: German Gomez <[e-mail]>
Cc: Hao Luo <[e-mail]>
Cc: James Clark <[e-mail]>
Cc: Jin Yao <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: John Garry <[e-mail]>
Cc: Kajol Jain <[e-mail]>
Cc: Kan Liang <[e-mail]>
Cc: Leo Yan <[e-mail]>
Cc: Madhavan Srinivasan <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Masami Hiramatsu <[e-mail]>
Cc: Miaoqian Lin <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Riccardo Mancini <[e-mail]>
Cc: Shunsuke Nakamura <[e-mail]>
Cc: Song Liu <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Cc: Stephen Brennan <[e-mail]>
Cc: Steven Rostedt (VMware) <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Thomas Richter <[e-mail]>
Cc: Yury Norov <[e-mail]>
Link: http://lore.kernel.org/lkml/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/pmu.c

···
 {
 	struct perf_cpu_map *pmu_cpus = pmu->cpus;
 	struct perf_cpu_map *matched_cpus, *unmatched_cpus;
-	int matched_nr = 0, unmatched_nr = 0;
+	struct perf_cpu cpu;
+	int i, matched_nr = 0, unmatched_nr = 0;
 
 	matched_cpus = perf_cpu_map__default_new();
 	if (!matched_cpus)
···
 		return -1;
 	}
 
-	for (int i = 0; i < cpus->nr; i++) {
-		int cpu;
-
-		cpu = perf_cpu_map__idx(pmu_cpus, cpus->map[i]);
-		if (cpu == -1)
-			unmatched_cpus->map[unmatched_nr++] = cpus->map[i];
+	perf_cpu_map__for_each_cpu(cpu, i, cpus) {
+		if (!perf_cpu_map__has(pmu_cpus, cpu))
+			unmatched_cpus->map[unmatched_nr++] = cpu;
 		else
-			matched_cpus->map[matched_nr++] = cpus->map[i];
+			matched_cpus->map[matched_nr++] = cpu;
 	}
 
 	unmatched_cpus->nr = unmatched_nr;