diff options
Diffstat (limited to 'tools/perf/util/tool_pmu.c')
| -rw-r--r-- | tools/perf/util/tool_pmu.c | 102 |
1 files changed, 74 insertions, 28 deletions
diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index f075098488ba..37c4eae0bef1 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -2,16 +2,19 @@ #include "cgroup.h" #include "counts.h" #include "cputopo.h" +#include "debug.h" #include "evsel.h" #include "pmu.h" #include "print-events.h" #include "smt.h" +#include "stat.h" #include "time-utils.h" #include "tool_pmu.h" #include "tsc.h" #include <api/fs/fs.h> #include <api/io.h> #include <internal/threadmap.h> +#include <perf/cpumap.h> #include <perf/threadmap.h> #include <fcntl.h> #include <strings.h> @@ -30,6 +33,8 @@ static const char *const tool_pmu__event_names[TOOL_PMU__EVENT_MAX] = { "slots", "smt_on", "system_tsc_freq", + "core_wide", + "target_cpu", }; bool tool_pmu__skip_event(const char *name __maybe_unused) @@ -106,6 +111,23 @@ const char *evsel__tool_pmu_event_name(const struct evsel *evsel) return tool_pmu__event_to_str(evsel->core.attr.config); } +struct perf_cpu_map *tool_pmu__cpus(struct perf_event_attr *attr) +{ + static struct perf_cpu_map *cpu0_map; + enum tool_pmu_event event = (enum tool_pmu_event)attr->config; + + if (event <= TOOL_PMU__EVENT_NONE || event >= TOOL_PMU__EVENT_MAX) { + pr_err("Invalid tool PMU event config %llx\n", attr->config); + return NULL; + } + if (event == TOOL_PMU__EVENT_USER_TIME || event == TOOL_PMU__EVENT_SYSTEM_TIME) + return cpu_map__online(); + + if (!cpu0_map) + cpu0_map = perf_cpu_map__new_int(0); + return perf_cpu_map__get(cpu0_map); +} + static bool read_until_char(struct io *io, char e) { int c; @@ -329,7 +351,11 @@ static bool has_pmem(void) return has_pmem; } -bool tool_pmu__read_event(enum tool_pmu_event ev, struct evsel *evsel, u64 *result) +bool tool_pmu__read_event(enum tool_pmu_event ev, + struct evsel *evsel, + bool system_wide, + const char *user_requested_cpu_list, + u64 *result) { const struct cpu_topology *topology; @@ -421,6 +447,14 @@ bool tool_pmu__read_event(enum tool_pmu_event ev, struct evsel *evsel, u64 *resu *result = arch_get_tsc_freq(); return true; + case TOOL_PMU__EVENT_CORE_WIDE: + *result = core_wide(system_wide, user_requested_cpu_list) ? 1 : 0; + return true; + + case TOOL_PMU__EVENT_TARGET_CPU: + *result = system_wide || (user_requested_cpu_list != NULL) ? 1 : 0; + return true; + case TOOL_PMU__EVENT_NONE: case TOOL_PMU__EVENT_DURATION_TIME: case TOOL_PMU__EVENT_USER_TIME: @@ -431,16 +465,39 @@ bool tool_pmu__read_event(enum tool_pmu_event ev, struct evsel *evsel, u64 *resu } } +static void perf_counts__update(struct perf_counts_values *count, + const struct perf_counts_values *old_count, + bool raw, u64 val) +{ + /* + * The values of enabled and running must make a ratio of 100%. The + * exact values don't matter as long as they are non-zero to avoid + * issues with evsel__count_has_error. + */ + if (old_count) { + count->val = raw ? val : old_count->val + val; + count->run = old_count->run + 1; + count->ena = old_count->ena + 1; + count->lost = old_count->lost; + } else { + count->val = val; + count->run++; + count->ena++; + count->lost = 0; + } +} + int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread) { __u64 *start_time, cur_time, delta_start; - u64 val; - int fd, err = 0; + int err = 0; struct perf_counts_values *count, *old_count = NULL; bool adjust = false; enum tool_pmu_event ev = evsel__tool_event(evsel); count = perf_counts(evsel->counts, cpu_map_idx, thread); + if (evsel->prev_raw_counts) + old_count = perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread); switch (ev) { case TOOL_PMU__EVENT_HAS_PMEM: @@ -451,26 +508,23 @@ int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread) case TOOL_PMU__EVENT_NUM_PACKAGES: case TOOL_PMU__EVENT_SLOTS: case TOOL_PMU__EVENT_SMT_ON: - case TOOL_PMU__EVENT_SYSTEM_TSC_FREQ: - if (evsel->prev_raw_counts) - old_count = perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread); - val = 0; + case TOOL_PMU__EVENT_CORE_WIDE: + case TOOL_PMU__EVENT_TARGET_CPU: + case TOOL_PMU__EVENT_SYSTEM_TSC_FREQ: { + u64 val = 0; + if (cpu_map_idx == 0 && thread == 0) { - if (!tool_pmu__read_event(ev, evsel, &val)) { + if (!tool_pmu__read_event(ev, evsel, + stat_config.system_wide, + stat_config.user_requested_cpu_list, + &val)) { count->lost++; val = 0; } } - if (old_count) { - count->val = old_count->val + val; - count->run = old_count->run + 1; - count->ena = old_count->ena + 1; - } else { - count->val = val; - count->run++; - count->ena++; - } + perf_counts__update(count, old_count, /*raw=*/false, val); return 0; + } case TOOL_PMU__EVENT_DURATION_TIME: /* * Pretend duration_time is only on the first CPU and thread, or @@ -486,9 +540,9 @@ int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread) case TOOL_PMU__EVENT_USER_TIME: case TOOL_PMU__EVENT_SYSTEM_TIME: { bool system = evsel__tool_event(evsel) == TOOL_PMU__EVENT_SYSTEM_TIME; + int fd = FD(evsel, cpu_map_idx, thread); start_time = xyarray__entry(evsel->start_times, cpu_map_idx, thread); - fd = FD(evsel, cpu_map_idx, thread); lseek(fd, SEEK_SET, 0); if (evsel->pid_stat) { /* The event exists solely on 1 CPU. */ @@ -522,17 +576,9 @@ int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread) if (adjust) { __u64 ticks_per_sec = sysconf(_SC_CLK_TCK); - delta_start *= 1000000000 / ticks_per_sec; + delta_start *= 1e9 / ticks_per_sec; } - count->val = delta_start; - count->lost = 0; - /* - * The values of enabled and running must make a ratio of 100%. The - * exact values don't matter as long as they are non-zero to avoid - * issues with evsel__count_has_error. - */ - count->ena++; - count->run++; + perf_counts__update(count, old_count, /*raw=*/true, delta_start); return 0; } |