perf stat: Check PMU cpumask file
If user doesn't explicitly specify CPU list, perf-stat only collects events on CPUs listed in the PMU cpumask file. Signed-off-by: "Yah, Zheng" <zheng.z.yan@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1347263631-23175-3-git-send-email-zheng.z.yan@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
314d9f63f3
commit
7ae92e744e
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@ -215,6 +215,16 @@ static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
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evsel->priv = NULL;
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evsel->priv = NULL;
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}
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}
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static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
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{
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return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
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}
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static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
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{
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return perf_evsel__cpus(evsel)->nr;
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}
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static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
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static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
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static struct stats runtime_cycles_stats[MAX_NR_CPUS];
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static struct stats runtime_cycles_stats[MAX_NR_CPUS];
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static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
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static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
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@ -246,7 +256,7 @@ retry:
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evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
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evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
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if (perf_target__has_cpu(&target)) {
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if (perf_target__has_cpu(&target)) {
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ret = perf_evsel__open_per_cpu(evsel, evsel_list->cpus);
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ret = perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
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if (ret)
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if (ret)
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goto check_ret;
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goto check_ret;
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return 0;
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return 0;
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@ -327,7 +337,7 @@ static int read_counter_aggr(struct perf_evsel *counter)
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u64 *count = counter->counts->aggr.values;
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u64 *count = counter->counts->aggr.values;
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int i;
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int i;
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if (__perf_evsel__read(counter, evsel_list->cpus->nr,
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if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
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evsel_list->threads->nr, scale) < 0)
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evsel_list->threads->nr, scale) < 0)
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return -1;
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return -1;
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@ -356,7 +366,7 @@ static int read_counter(struct perf_evsel *counter)
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u64 *count;
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u64 *count;
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int cpu;
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int cpu;
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for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
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for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
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if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
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if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
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return -1;
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return -1;
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@ -495,12 +505,12 @@ static int run_perf_stat(int argc __maybe_unused, const char **argv)
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if (no_aggr) {
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if (no_aggr) {
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list_for_each_entry(counter, &evsel_list->entries, node) {
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list_for_each_entry(counter, &evsel_list->entries, node) {
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read_counter(counter);
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read_counter(counter);
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perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
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perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
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}
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}
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} else {
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} else {
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list_for_each_entry(counter, &evsel_list->entries, node) {
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list_for_each_entry(counter, &evsel_list->entries, node) {
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read_counter_aggr(counter);
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read_counter_aggr(counter);
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perf_evsel__close_fd(counter, evsel_list->cpus->nr,
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perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
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evsel_list->threads->nr);
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evsel_list->threads->nr);
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}
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}
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}
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}
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@ -538,7 +548,7 @@ static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
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if (no_aggr)
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if (no_aggr)
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sprintf(cpustr, "CPU%*d%s",
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sprintf(cpustr, "CPU%*d%s",
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csv_output ? 0 : -4,
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csv_output ? 0 : -4,
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evsel_list->cpus->map[cpu], csv_sep);
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perf_evsel__cpus(evsel)->map[cpu], csv_sep);
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fprintf(output, fmt, cpustr, msecs, csv_sep, perf_evsel__name(evsel));
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fprintf(output, fmt, cpustr, msecs, csv_sep, perf_evsel__name(evsel));
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@ -750,7 +760,7 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
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if (no_aggr)
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if (no_aggr)
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sprintf(cpustr, "CPU%*d%s",
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sprintf(cpustr, "CPU%*d%s",
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csv_output ? 0 : -4,
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csv_output ? 0 : -4,
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evsel_list->cpus->map[cpu], csv_sep);
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perf_evsel__cpus(evsel)->map[cpu], csv_sep);
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else
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else
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cpu = 0;
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cpu = 0;
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@ -911,14 +921,14 @@ static void print_counter(struct perf_evsel *counter)
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u64 ena, run, val;
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u64 ena, run, val;
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int cpu;
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int cpu;
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for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
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for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
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val = counter->counts->cpu[cpu].val;
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val = counter->counts->cpu[cpu].val;
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ena = counter->counts->cpu[cpu].ena;
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ena = counter->counts->cpu[cpu].ena;
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run = counter->counts->cpu[cpu].run;
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run = counter->counts->cpu[cpu].run;
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if (run == 0 || ena == 0) {
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if (run == 0 || ena == 0) {
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fprintf(output, "CPU%*d%s%*s%s%*s",
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fprintf(output, "CPU%*d%s%*s%s%*s",
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csv_output ? 0 : -4,
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csv_output ? 0 : -4,
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evsel_list->cpus->map[cpu], csv_sep,
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perf_evsel__cpus(counter)->map[cpu], csv_sep,
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csv_output ? 0 : 18,
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csv_output ? 0 : 18,
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counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
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counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
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csv_sep,
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csv_sep,
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@ -1217,7 +1227,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
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list_for_each_entry(pos, &evsel_list->entries, node) {
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list_for_each_entry(pos, &evsel_list->entries, node) {
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if (perf_evsel__alloc_stat_priv(pos) < 0 ||
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if (perf_evsel__alloc_stat_priv(pos) < 0 ||
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perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0)
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perf_evsel__alloc_counts(pos, perf_evsel__nr_cpus(pos)) < 0)
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goto out_free_fd;
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goto out_free_fd;
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}
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}
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@ -38,24 +38,19 @@ static struct cpu_map *cpu_map__trim_new(int nr_cpus, int *tmp_cpus)
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return cpus;
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return cpus;
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}
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}
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static struct cpu_map *cpu_map__read_all_cpu_map(void)
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struct cpu_map *cpu_map__read(FILE *file)
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{
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{
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struct cpu_map *cpus = NULL;
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struct cpu_map *cpus = NULL;
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FILE *onlnf;
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int nr_cpus = 0;
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int nr_cpus = 0;
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int *tmp_cpus = NULL, *tmp;
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int *tmp_cpus = NULL, *tmp;
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int max_entries = 0;
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int max_entries = 0;
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int n, cpu, prev;
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int n, cpu, prev;
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char sep;
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char sep;
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onlnf = fopen("/sys/devices/system/cpu/online", "r");
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if (!onlnf)
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return cpu_map__default_new();
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sep = 0;
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sep = 0;
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prev = -1;
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prev = -1;
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for (;;) {
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for (;;) {
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n = fscanf(onlnf, "%u%c", &cpu, &sep);
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n = fscanf(file, "%u%c", &cpu, &sep);
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if (n <= 0)
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if (n <= 0)
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break;
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break;
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if (prev >= 0) {
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if (prev >= 0) {
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@ -95,6 +90,19 @@ static struct cpu_map *cpu_map__read_all_cpu_map(void)
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cpus = cpu_map__default_new();
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cpus = cpu_map__default_new();
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out_free_tmp:
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out_free_tmp:
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free(tmp_cpus);
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free(tmp_cpus);
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return cpus;
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}
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static struct cpu_map *cpu_map__read_all_cpu_map(void)
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{
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struct cpu_map *cpus = NULL;
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FILE *onlnf;
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onlnf = fopen("/sys/devices/system/cpu/online", "r");
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if (!onlnf)
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return cpu_map__default_new();
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cpus = cpu_map__read(onlnf);
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fclose(onlnf);
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fclose(onlnf);
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return cpus;
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return cpus;
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}
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}
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@ -11,7 +11,7 @@ struct cpu_map {
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struct cpu_map *cpu_map__new(const char *cpu_list);
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struct cpu_map *cpu_map__new(const char *cpu_list);
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struct cpu_map *cpu_map__dummy_new(void);
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struct cpu_map *cpu_map__dummy_new(void);
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void cpu_map__delete(struct cpu_map *map);
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void cpu_map__delete(struct cpu_map *map);
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struct cpu_map *cpu_map__read(FILE *file);
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size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
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size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
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#endif /* __PERF_CPUMAP_H */
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#endif /* __PERF_CPUMAP_H */
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@ -66,6 +66,7 @@ struct perf_evsel {
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void *func;
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void *func;
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void *data;
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void *data;
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} handler;
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} handler;
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struct cpu_map *cpus;
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unsigned int sample_size;
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unsigned int sample_size;
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bool supported;
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bool supported;
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/* parse modifier helper */
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/* parse modifier helper */
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@ -239,8 +239,11 @@ const char *event_type(int type)
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return "unknown";
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return "unknown";
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}
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}
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static int add_event(struct list_head **_list, int *idx,
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struct perf_event_attr *attr, char *name)
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static int __add_event(struct list_head **_list, int *idx,
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struct perf_event_attr *attr,
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char *name, struct cpu_map *cpus)
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{
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{
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struct perf_evsel *evsel;
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struct perf_evsel *evsel;
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struct list_head *list = *_list;
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struct list_head *list = *_list;
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@ -260,6 +263,7 @@ static int add_event(struct list_head **_list, int *idx,
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return -ENOMEM;
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return -ENOMEM;
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}
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}
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evsel->cpus = cpus;
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if (name)
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if (name)
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evsel->name = strdup(name);
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evsel->name = strdup(name);
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list_add_tail(&evsel->node, list);
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list_add_tail(&evsel->node, list);
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@ -267,6 +271,12 @@ static int add_event(struct list_head **_list, int *idx,
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return 0;
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return 0;
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}
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}
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static int add_event(struct list_head **_list, int *idx,
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struct perf_event_attr *attr, char *name)
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{
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return __add_event(_list, idx, attr, name, NULL);
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}
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static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
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static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
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{
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{
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int i, j;
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int i, j;
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@ -607,8 +617,8 @@ int parse_events_add_pmu(struct list_head **list, int *idx,
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if (perf_pmu__config(pmu, &attr, head_config))
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if (perf_pmu__config(pmu, &attr, head_config))
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return -EINVAL;
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return -EINVAL;
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return add_event(list, idx, &attr,
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return __add_event(list, idx, &attr, pmu_event_name(head_config),
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pmu_event_name(head_config));
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pmu->cpus);
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}
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}
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int parse_events__modifier_group(struct list_head *list,
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int parse_events__modifier_group(struct list_head *list,
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@ -9,6 +9,7 @@
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#include "util.h"
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#include "util.h"
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#include "pmu.h"
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#include "pmu.h"
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#include "parse-events.h"
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#include "parse-events.h"
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#include "cpumap.h"
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#define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
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#define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
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@ -253,6 +254,33 @@ static void pmu_read_sysfs(void)
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closedir(dir);
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closedir(dir);
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}
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}
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static struct cpu_map *pmu_cpumask(char *name)
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{
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struct stat st;
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char path[PATH_MAX];
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const char *sysfs;
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FILE *file;
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struct cpu_map *cpus;
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sysfs = sysfs_find_mountpoint();
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if (!sysfs)
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return NULL;
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snprintf(path, PATH_MAX,
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"%s/bus/event_source/devices/%s/cpumask", sysfs, name);
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if (stat(path, &st) < 0)
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return NULL;
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file = fopen(path, "r");
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if (!file)
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return NULL;
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cpus = cpu_map__read(file);
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fclose(file);
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return cpus;
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}
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static struct perf_pmu *pmu_lookup(char *name)
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static struct perf_pmu *pmu_lookup(char *name)
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{
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{
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struct perf_pmu *pmu;
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struct perf_pmu *pmu;
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@ -275,6 +303,8 @@ static struct perf_pmu *pmu_lookup(char *name)
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if (!pmu)
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if (!pmu)
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return NULL;
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return NULL;
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pmu->cpus = pmu_cpumask(name);
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pmu_aliases(name, &aliases);
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pmu_aliases(name, &aliases);
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INIT_LIST_HEAD(&pmu->format);
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INIT_LIST_HEAD(&pmu->format);
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@ -28,6 +28,7 @@ struct perf_pmu__alias {
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struct perf_pmu {
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struct perf_pmu {
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char *name;
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char *name;
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__u32 type;
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__u32 type;
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struct cpu_map *cpus;
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struct list_head format;
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struct list_head format;
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struct list_head aliases;
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struct list_head aliases;
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struct list_head list;
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struct list_head list;
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