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0ce2da1483
Adding the support to read rusage data once the workload is finished and display the system/user time values: $ perf stat --null perf bench sched pipe ... Performance counter stats for 'perf bench sched pipe': 5.342599256 seconds time elapsed 2.544434000 seconds user 4.549691000 seconds sys It works only in non -r mode and only for workload target. So as of now, for workload targets, we display 3 types of timings. The time we meassure in perf stat from enable to disable+period: 5.342599256 seconds time elapsed The time spent in user and system lands, displayed only for workload session/target: 2.544434000 seconds user 4.549691000 seconds sys Those times are the very same displayed by 'time' tool. They are returned by wait4 call via the getrusage struct interface. Committer notes: Had to rename some variables to avoid this on older systems such as centos:6: builtin-stat.c: In function 'print_footer': builtin-stat.c:1831: warning: declaration of 'stime' shadows a global declaration /usr/include/time.h:297: warning: shadowed declaration is here Committer testing: # perf stat --null time perf bench sched pipe # Running 'sched/pipe' benchmark: # Executed 1000000 pipe operations between two processes Total time: 5.526 [sec] 5.526534 usecs/op 180945 ops/sec 1.00user 6.25system 0:05.52elapsed 131%CPU (0avgtext+0avgdata 8056maxresident)k 0inputs+0outputs (0major+606minor)pagefaults 0swaps Performance counter stats for 'time perf bench sched pipe': 5.530978744 seconds time elapsed 1.004037000 seconds user 6.259937000 seconds sys # Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180605121313.31337-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3170 lines
77 KiB
C
3170 lines
77 KiB
C
/*
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* builtin-stat.c
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*
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* Builtin stat command: Give a precise performance counters summary
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* overview about any workload, CPU or specific PID.
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*
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* Sample output:
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$ perf stat ./hackbench 10
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Time: 0.118
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Performance counter stats for './hackbench 10':
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1708.761321 task-clock # 11.037 CPUs utilized
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41,190 context-switches # 0.024 M/sec
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6,735 CPU-migrations # 0.004 M/sec
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17,318 page-faults # 0.010 M/sec
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5,205,202,243 cycles # 3.046 GHz
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3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
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1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
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2,603,501,247 instructions # 0.50 insns per cycle
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# 1.48 stalled cycles per insn
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484,357,498 branches # 283.455 M/sec
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6,388,934 branch-misses # 1.32% of all branches
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0.154822978 seconds time elapsed
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*
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* Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
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*
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* Improvements and fixes by:
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*
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* Arjan van de Ven <arjan@linux.intel.com>
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* Yanmin Zhang <yanmin.zhang@intel.com>
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* Wu Fengguang <fengguang.wu@intel.com>
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* Mike Galbraith <efault@gmx.de>
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* Paul Mackerras <paulus@samba.org>
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* Jaswinder Singh Rajput <jaswinder@kernel.org>
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*
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* Released under the GPL v2. (and only v2, not any later version)
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*/
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#include "perf.h"
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#include "builtin.h"
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#include "util/cgroup.h"
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#include "util/util.h"
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#include <subcmd/parse-options.h>
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#include "util/parse-events.h"
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#include "util/pmu.h"
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#include "util/event.h"
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#include "util/evlist.h"
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#include "util/evsel.h"
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#include "util/debug.h"
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#include "util/drv_configs.h"
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#include "util/color.h"
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#include "util/stat.h"
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#include "util/header.h"
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#include "util/cpumap.h"
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#include "util/thread.h"
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#include "util/thread_map.h"
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#include "util/counts.h"
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#include "util/group.h"
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#include "util/session.h"
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#include "util/tool.h"
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#include "util/string2.h"
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#include "util/metricgroup.h"
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#include "asm/bug.h"
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#include <linux/time64.h>
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#include <api/fs/fs.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <sys/prctl.h>
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#include <inttypes.h>
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#include <locale.h>
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#include <math.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#include "sane_ctype.h"
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#define DEFAULT_SEPARATOR " "
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#define CNTR_NOT_SUPPORTED "<not supported>"
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#define CNTR_NOT_COUNTED "<not counted>"
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#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi"
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static void print_counters(struct timespec *ts, int argc, const char **argv);
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/* Default events used for perf stat -T */
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static const char *transaction_attrs = {
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"task-clock,"
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"{"
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"instructions,"
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"cycles,"
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"cpu/cycles-t/,"
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"cpu/tx-start/,"
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"cpu/el-start/,"
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"cpu/cycles-ct/"
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"}"
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};
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/* More limited version when the CPU does not have all events. */
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static const char * transaction_limited_attrs = {
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"task-clock,"
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"{"
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"instructions,"
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"cycles,"
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"cpu/cycles-t/,"
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"cpu/tx-start/"
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"}"
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};
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static const char * topdown_attrs[] = {
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"topdown-total-slots",
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"topdown-slots-retired",
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"topdown-recovery-bubbles",
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"topdown-fetch-bubbles",
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"topdown-slots-issued",
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NULL,
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};
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static const char *smi_cost_attrs = {
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"{"
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"msr/aperf/,"
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"msr/smi/,"
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"cycles"
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"}"
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};
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static struct perf_evlist *evsel_list;
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static struct rblist metric_events;
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static struct target target = {
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.uid = UINT_MAX,
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};
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typedef int (*aggr_get_id_t)(struct cpu_map *m, int cpu);
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static int run_count = 1;
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static bool no_inherit = false;
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static volatile pid_t child_pid = -1;
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static bool null_run = false;
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static int detailed_run = 0;
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static bool transaction_run;
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static bool topdown_run = false;
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static bool smi_cost = false;
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static bool smi_reset = false;
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static bool big_num = true;
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static int big_num_opt = -1;
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static const char *csv_sep = NULL;
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static bool csv_output = false;
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static bool group = false;
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static const char *pre_cmd = NULL;
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static const char *post_cmd = NULL;
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static bool sync_run = false;
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static unsigned int initial_delay = 0;
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static unsigned int unit_width = 4; /* strlen("unit") */
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static bool forever = false;
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static bool metric_only = false;
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static bool force_metric_only = false;
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static bool no_merge = false;
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static bool walltime_run_table = false;
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static struct timespec ref_time;
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static struct cpu_map *aggr_map;
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static aggr_get_id_t aggr_get_id;
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static bool append_file;
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static bool interval_count;
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static const char *output_name;
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static int output_fd;
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static int print_free_counters_hint;
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static int print_mixed_hw_group_error;
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static u64 *walltime_run;
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static bool ru_display = false;
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static struct rusage ru_data;
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struct perf_stat {
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bool record;
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struct perf_data data;
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struct perf_session *session;
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u64 bytes_written;
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struct perf_tool tool;
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bool maps_allocated;
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struct cpu_map *cpus;
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struct thread_map *threads;
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enum aggr_mode aggr_mode;
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};
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static struct perf_stat perf_stat;
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#define STAT_RECORD perf_stat.record
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static volatile int done = 0;
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static struct perf_stat_config stat_config = {
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.aggr_mode = AGGR_GLOBAL,
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.scale = true,
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};
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static bool is_duration_time(struct perf_evsel *evsel)
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{
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return !strcmp(evsel->name, "duration_time");
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}
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static inline void diff_timespec(struct timespec *r, struct timespec *a,
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struct timespec *b)
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{
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r->tv_sec = a->tv_sec - b->tv_sec;
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if (a->tv_nsec < b->tv_nsec) {
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r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec;
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r->tv_sec--;
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} else {
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r->tv_nsec = a->tv_nsec - b->tv_nsec ;
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}
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}
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static void perf_stat__reset_stats(void)
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{
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int i;
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perf_evlist__reset_stats(evsel_list);
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perf_stat__reset_shadow_stats();
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for (i = 0; i < stat_config.stats_num; i++)
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perf_stat__reset_shadow_per_stat(&stat_config.stats[i]);
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}
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static int create_perf_stat_counter(struct perf_evsel *evsel)
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{
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struct perf_event_attr *attr = &evsel->attr;
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struct perf_evsel *leader = evsel->leader;
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if (stat_config.scale) {
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attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
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PERF_FORMAT_TOTAL_TIME_RUNNING;
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}
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/*
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* The event is part of non trivial group, let's enable
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* the group read (for leader) and ID retrieval for all
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* members.
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*/
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if (leader->nr_members > 1)
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attr->read_format |= PERF_FORMAT_ID|PERF_FORMAT_GROUP;
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attr->inherit = !no_inherit;
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/*
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* Some events get initialized with sample_(period/type) set,
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* like tracepoints. Clear it up for counting.
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*/
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attr->sample_period = 0;
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/*
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* But set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
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* while avoiding that older tools show confusing messages.
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*
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* However for pipe sessions we need to keep it zero,
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* because script's perf_evsel__check_attr is triggered
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* by attr->sample_type != 0, and we can't run it on
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* stat sessions.
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*/
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if (!(STAT_RECORD && perf_stat.data.is_pipe))
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attr->sample_type = PERF_SAMPLE_IDENTIFIER;
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/*
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* Disabling all counters initially, they will be enabled
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* either manually by us or by kernel via enable_on_exec
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* set later.
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*/
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if (perf_evsel__is_group_leader(evsel)) {
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attr->disabled = 1;
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/*
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* In case of initial_delay we enable tracee
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* events manually.
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*/
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if (target__none(&target) && !initial_delay)
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attr->enable_on_exec = 1;
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}
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if (target__has_cpu(&target) && !target__has_per_thread(&target))
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return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
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return perf_evsel__open_per_thread(evsel, evsel_list->threads);
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}
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/*
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* Does the counter have nsecs as a unit?
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*/
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static inline int nsec_counter(struct perf_evsel *evsel)
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{
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if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
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perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
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return 1;
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return 0;
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}
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static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) {
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pr_err("failed to write perf data, error: %m\n");
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return -1;
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}
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perf_stat.bytes_written += event->header.size;
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return 0;
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}
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static int write_stat_round_event(u64 tm, u64 type)
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{
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return perf_event__synthesize_stat_round(NULL, tm, type,
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process_synthesized_event,
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NULL);
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}
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#define WRITE_STAT_ROUND_EVENT(time, interval) \
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write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
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#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
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static int
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perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread,
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struct perf_counts_values *count)
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{
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struct perf_sample_id *sid = SID(counter, cpu, thread);
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return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count,
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process_synthesized_event, NULL);
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}
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/*
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* Read out the results of a single counter:
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* do not aggregate counts across CPUs in system-wide mode
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*/
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static int read_counter(struct perf_evsel *counter)
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{
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int nthreads = thread_map__nr(evsel_list->threads);
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int ncpus, cpu, thread;
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if (target__has_cpu(&target) && !target__has_per_thread(&target))
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ncpus = perf_evsel__nr_cpus(counter);
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else
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ncpus = 1;
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if (!counter->supported)
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return -ENOENT;
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if (counter->system_wide)
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nthreads = 1;
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for (thread = 0; thread < nthreads; thread++) {
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for (cpu = 0; cpu < ncpus; cpu++) {
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struct perf_counts_values *count;
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count = perf_counts(counter->counts, cpu, thread);
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/*
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* The leader's group read loads data into its group members
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* (via perf_evsel__read_counter) and sets threir count->loaded.
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*/
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if (!count->loaded &&
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perf_evsel__read_counter(counter, cpu, thread)) {
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counter->counts->scaled = -1;
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perf_counts(counter->counts, cpu, thread)->ena = 0;
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perf_counts(counter->counts, cpu, thread)->run = 0;
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return -1;
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}
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count->loaded = false;
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if (STAT_RECORD) {
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if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
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pr_err("failed to write stat event\n");
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return -1;
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}
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}
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if (verbose > 1) {
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fprintf(stat_config.output,
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"%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
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perf_evsel__name(counter),
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cpu,
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count->val, count->ena, count->run);
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}
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}
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}
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return 0;
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}
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static void read_counters(void)
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{
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struct perf_evsel *counter;
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int ret;
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evlist__for_each_entry(evsel_list, counter) {
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ret = read_counter(counter);
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if (ret)
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pr_debug("failed to read counter %s\n", counter->name);
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if (ret == 0 && perf_stat_process_counter(&stat_config, counter))
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pr_warning("failed to process counter %s\n", counter->name);
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}
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}
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static void process_interval(void)
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{
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struct timespec ts, rs;
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read_counters();
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clock_gettime(CLOCK_MONOTONIC, &ts);
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diff_timespec(&rs, &ts, &ref_time);
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if (STAT_RECORD) {
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if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL))
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pr_err("failed to write stat round event\n");
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}
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init_stats(&walltime_nsecs_stats);
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update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000);
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print_counters(&rs, 0, NULL);
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}
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static void enable_counters(void)
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{
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if (initial_delay)
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usleep(initial_delay * USEC_PER_MSEC);
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/*
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* We need to enable counters only if:
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* - we don't have tracee (attaching to task or cpu)
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* - we have initial delay configured
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*/
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if (!target__none(&target) || initial_delay)
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perf_evlist__enable(evsel_list);
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}
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static void disable_counters(void)
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{
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/*
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* If we don't have tracee (attaching to task or cpu), counters may
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* still be running. To get accurate group ratios, we must stop groups
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* from counting before reading their constituent counters.
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*/
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if (!target__none(&target))
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perf_evlist__disable(evsel_list);
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}
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static volatile int workload_exec_errno;
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/*
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* perf_evlist__prepare_workload will send a SIGUSR1
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* if the fork fails, since we asked by setting its
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* want_signal to true.
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*/
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static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info,
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void *ucontext __maybe_unused)
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{
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workload_exec_errno = info->si_value.sival_int;
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}
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static int perf_stat_synthesize_config(bool is_pipe)
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{
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int err;
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if (is_pipe) {
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err = perf_event__synthesize_attrs(NULL, perf_stat.session,
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process_synthesized_event);
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if (err < 0) {
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pr_err("Couldn't synthesize attrs.\n");
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return err;
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}
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}
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err = perf_event__synthesize_extra_attr(NULL,
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evsel_list,
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|
process_synthesized_event,
|
|
is_pipe);
|
|
|
|
err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
|
|
process_synthesized_event,
|
|
NULL);
|
|
if (err < 0) {
|
|
pr_err("Couldn't synthesize thread map.\n");
|
|
return err;
|
|
}
|
|
|
|
err = perf_event__synthesize_cpu_map(NULL, evsel_list->cpus,
|
|
process_synthesized_event, NULL);
|
|
if (err < 0) {
|
|
pr_err("Couldn't synthesize thread map.\n");
|
|
return err;
|
|
}
|
|
|
|
err = perf_event__synthesize_stat_config(NULL, &stat_config,
|
|
process_synthesized_event, NULL);
|
|
if (err < 0) {
|
|
pr_err("Couldn't synthesize config.\n");
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
|
|
|
|
static int __store_counter_ids(struct perf_evsel *counter)
|
|
{
|
|
int cpu, thread;
|
|
|
|
for (cpu = 0; cpu < xyarray__max_x(counter->fd); cpu++) {
|
|
for (thread = 0; thread < xyarray__max_y(counter->fd);
|
|
thread++) {
|
|
int fd = FD(counter, cpu, thread);
|
|
|
|
if (perf_evlist__id_add_fd(evsel_list, counter,
|
|
cpu, thread, fd) < 0)
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int store_counter_ids(struct perf_evsel *counter)
|
|
{
|
|
struct cpu_map *cpus = counter->cpus;
|
|
struct thread_map *threads = counter->threads;
|
|
|
|
if (perf_evsel__alloc_id(counter, cpus->nr, threads->nr))
|
|
return -ENOMEM;
|
|
|
|
return __store_counter_ids(counter);
|
|
}
|
|
|
|
static bool perf_evsel__should_store_id(struct perf_evsel *counter)
|
|
{
|
|
return STAT_RECORD || counter->attr.read_format & PERF_FORMAT_ID;
|
|
}
|
|
|
|
static struct perf_evsel *perf_evsel__reset_weak_group(struct perf_evsel *evsel)
|
|
{
|
|
struct perf_evsel *c2, *leader;
|
|
bool is_open = true;
|
|
|
|
leader = evsel->leader;
|
|
pr_debug("Weak group for %s/%d failed\n",
|
|
leader->name, leader->nr_members);
|
|
|
|
/*
|
|
* for_each_group_member doesn't work here because it doesn't
|
|
* include the first entry.
|
|
*/
|
|
evlist__for_each_entry(evsel_list, c2) {
|
|
if (c2 == evsel)
|
|
is_open = false;
|
|
if (c2->leader == leader) {
|
|
if (is_open)
|
|
perf_evsel__close(c2);
|
|
c2->leader = c2;
|
|
c2->nr_members = 0;
|
|
}
|
|
}
|
|
return leader;
|
|
}
|
|
|
|
static int __run_perf_stat(int argc, const char **argv, int run_idx)
|
|
{
|
|
int interval = stat_config.interval;
|
|
int times = stat_config.times;
|
|
int timeout = stat_config.timeout;
|
|
char msg[BUFSIZ];
|
|
unsigned long long t0, t1;
|
|
struct perf_evsel *counter;
|
|
struct timespec ts;
|
|
size_t l;
|
|
int status = 0;
|
|
const bool forks = (argc > 0);
|
|
bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false;
|
|
struct perf_evsel_config_term *err_term;
|
|
|
|
if (interval) {
|
|
ts.tv_sec = interval / USEC_PER_MSEC;
|
|
ts.tv_nsec = (interval % USEC_PER_MSEC) * NSEC_PER_MSEC;
|
|
} else if (timeout) {
|
|
ts.tv_sec = timeout / USEC_PER_MSEC;
|
|
ts.tv_nsec = (timeout % USEC_PER_MSEC) * NSEC_PER_MSEC;
|
|
} else {
|
|
ts.tv_sec = 1;
|
|
ts.tv_nsec = 0;
|
|
}
|
|
|
|
if (forks) {
|
|
if (perf_evlist__prepare_workload(evsel_list, &target, argv, is_pipe,
|
|
workload_exec_failed_signal) < 0) {
|
|
perror("failed to prepare workload");
|
|
return -1;
|
|
}
|
|
child_pid = evsel_list->workload.pid;
|
|
}
|
|
|
|
if (group)
|
|
perf_evlist__set_leader(evsel_list);
|
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
try_again:
|
|
if (create_perf_stat_counter(counter) < 0) {
|
|
|
|
/* Weak group failed. Reset the group. */
|
|
if ((errno == EINVAL || errno == EBADF) &&
|
|
counter->leader != counter &&
|
|
counter->weak_group) {
|
|
counter = perf_evsel__reset_weak_group(counter);
|
|
goto try_again;
|
|
}
|
|
|
|
/*
|
|
* PPC returns ENXIO for HW counters until 2.6.37
|
|
* (behavior changed with commit b0a873e).
|
|
*/
|
|
if (errno == EINVAL || errno == ENOSYS ||
|
|
errno == ENOENT || errno == EOPNOTSUPP ||
|
|
errno == ENXIO) {
|
|
if (verbose > 0)
|
|
ui__warning("%s event is not supported by the kernel.\n",
|
|
perf_evsel__name(counter));
|
|
counter->supported = false;
|
|
|
|
if ((counter->leader != counter) ||
|
|
!(counter->leader->nr_members > 1))
|
|
continue;
|
|
} else if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
|
|
if (verbose > 0)
|
|
ui__warning("%s\n", msg);
|
|
goto try_again;
|
|
} else if (target__has_per_thread(&target) &&
|
|
evsel_list->threads &&
|
|
evsel_list->threads->err_thread != -1) {
|
|
/*
|
|
* For global --per-thread case, skip current
|
|
* error thread.
|
|
*/
|
|
if (!thread_map__remove(evsel_list->threads,
|
|
evsel_list->threads->err_thread)) {
|
|
evsel_list->threads->err_thread = -1;
|
|
goto try_again;
|
|
}
|
|
}
|
|
|
|
perf_evsel__open_strerror(counter, &target,
|
|
errno, msg, sizeof(msg));
|
|
ui__error("%s\n", msg);
|
|
|
|
if (child_pid != -1)
|
|
kill(child_pid, SIGTERM);
|
|
|
|
return -1;
|
|
}
|
|
counter->supported = true;
|
|
|
|
l = strlen(counter->unit);
|
|
if (l > unit_width)
|
|
unit_width = l;
|
|
|
|
if (perf_evsel__should_store_id(counter) &&
|
|
store_counter_ids(counter))
|
|
return -1;
|
|
}
|
|
|
|
if (perf_evlist__apply_filters(evsel_list, &counter)) {
|
|
pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n",
|
|
counter->filter, perf_evsel__name(counter), errno,
|
|
str_error_r(errno, msg, sizeof(msg)));
|
|
return -1;
|
|
}
|
|
|
|
if (perf_evlist__apply_drv_configs(evsel_list, &counter, &err_term)) {
|
|
pr_err("failed to set config \"%s\" on event %s with %d (%s)\n",
|
|
err_term->val.drv_cfg, perf_evsel__name(counter), errno,
|
|
str_error_r(errno, msg, sizeof(msg)));
|
|
return -1;
|
|
}
|
|
|
|
if (STAT_RECORD) {
|
|
int err, fd = perf_data__fd(&perf_stat.data);
|
|
|
|
if (is_pipe) {
|
|
err = perf_header__write_pipe(perf_data__fd(&perf_stat.data));
|
|
} else {
|
|
err = perf_session__write_header(perf_stat.session, evsel_list,
|
|
fd, false);
|
|
}
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = perf_stat_synthesize_config(is_pipe);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Enable counters and exec the command:
|
|
*/
|
|
t0 = rdclock();
|
|
clock_gettime(CLOCK_MONOTONIC, &ref_time);
|
|
|
|
if (forks) {
|
|
perf_evlist__start_workload(evsel_list);
|
|
enable_counters();
|
|
|
|
if (interval || timeout) {
|
|
while (!waitpid(child_pid, &status, WNOHANG)) {
|
|
nanosleep(&ts, NULL);
|
|
if (timeout)
|
|
break;
|
|
process_interval();
|
|
if (interval_count && !(--times))
|
|
break;
|
|
}
|
|
}
|
|
wait4(child_pid, &status, 0, &ru_data);
|
|
|
|
if (workload_exec_errno) {
|
|
const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg));
|
|
pr_err("Workload failed: %s\n", emsg);
|
|
return -1;
|
|
}
|
|
|
|
if (WIFSIGNALED(status))
|
|
psignal(WTERMSIG(status), argv[0]);
|
|
} else {
|
|
enable_counters();
|
|
while (!done) {
|
|
nanosleep(&ts, NULL);
|
|
if (timeout)
|
|
break;
|
|
if (interval) {
|
|
process_interval();
|
|
if (interval_count && !(--times))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
disable_counters();
|
|
|
|
t1 = rdclock();
|
|
|
|
if (walltime_run_table)
|
|
walltime_run[run_idx] = t1 - t0;
|
|
|
|
update_stats(&walltime_nsecs_stats, t1 - t0);
|
|
|
|
/*
|
|
* Closing a group leader splits the group, and as we only disable
|
|
* group leaders, results in remaining events becoming enabled. To
|
|
* avoid arbitrary skew, we must read all counters before closing any
|
|
* group leaders.
|
|
*/
|
|
read_counters();
|
|
perf_evlist__close(evsel_list);
|
|
|
|
return WEXITSTATUS(status);
|
|
}
|
|
|
|
static int run_perf_stat(int argc, const char **argv, int run_idx)
|
|
{
|
|
int ret;
|
|
|
|
if (pre_cmd) {
|
|
ret = system(pre_cmd);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (sync_run)
|
|
sync();
|
|
|
|
ret = __run_perf_stat(argc, argv, run_idx);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (post_cmd) {
|
|
ret = system(post_cmd);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void print_running(u64 run, u64 ena)
|
|
{
|
|
if (csv_output) {
|
|
fprintf(stat_config.output, "%s%" PRIu64 "%s%.2f",
|
|
csv_sep,
|
|
run,
|
|
csv_sep,
|
|
ena ? 100.0 * run / ena : 100.0);
|
|
} else if (run != ena) {
|
|
fprintf(stat_config.output, " (%.2f%%)", 100.0 * run / ena);
|
|
}
|
|
}
|
|
|
|
static void print_noise_pct(double total, double avg)
|
|
{
|
|
double pct = rel_stddev_stats(total, avg);
|
|
|
|
if (csv_output)
|
|
fprintf(stat_config.output, "%s%.2f%%", csv_sep, pct);
|
|
else if (pct)
|
|
fprintf(stat_config.output, " ( +-%6.2f%% )", pct);
|
|
}
|
|
|
|
static void print_noise(struct perf_evsel *evsel, double avg)
|
|
{
|
|
struct perf_stat_evsel *ps;
|
|
|
|
if (run_count == 1)
|
|
return;
|
|
|
|
ps = evsel->stats;
|
|
print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
|
|
}
|
|
|
|
static void aggr_printout(struct perf_evsel *evsel, int id, int nr)
|
|
{
|
|
switch (stat_config.aggr_mode) {
|
|
case AGGR_CORE:
|
|
fprintf(stat_config.output, "S%d-C%*d%s%*d%s",
|
|
cpu_map__id_to_socket(id),
|
|
csv_output ? 0 : -8,
|
|
cpu_map__id_to_cpu(id),
|
|
csv_sep,
|
|
csv_output ? 0 : 4,
|
|
nr,
|
|
csv_sep);
|
|
break;
|
|
case AGGR_SOCKET:
|
|
fprintf(stat_config.output, "S%*d%s%*d%s",
|
|
csv_output ? 0 : -5,
|
|
id,
|
|
csv_sep,
|
|
csv_output ? 0 : 4,
|
|
nr,
|
|
csv_sep);
|
|
break;
|
|
case AGGR_NONE:
|
|
fprintf(stat_config.output, "CPU%*d%s",
|
|
csv_output ? 0 : -4,
|
|
perf_evsel__cpus(evsel)->map[id], csv_sep);
|
|
break;
|
|
case AGGR_THREAD:
|
|
fprintf(stat_config.output, "%*s-%*d%s",
|
|
csv_output ? 0 : 16,
|
|
thread_map__comm(evsel->threads, id),
|
|
csv_output ? 0 : -8,
|
|
thread_map__pid(evsel->threads, id),
|
|
csv_sep);
|
|
break;
|
|
case AGGR_GLOBAL:
|
|
case AGGR_UNSET:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
struct outstate {
|
|
FILE *fh;
|
|
bool newline;
|
|
const char *prefix;
|
|
int nfields;
|
|
int id, nr;
|
|
struct perf_evsel *evsel;
|
|
};
|
|
|
|
#define METRIC_LEN 35
|
|
|
|
static void new_line_std(void *ctx)
|
|
{
|
|
struct outstate *os = ctx;
|
|
|
|
os->newline = true;
|
|
}
|
|
|
|
static void do_new_line_std(struct outstate *os)
|
|
{
|
|
fputc('\n', os->fh);
|
|
fputs(os->prefix, os->fh);
|
|
aggr_printout(os->evsel, os->id, os->nr);
|
|
if (stat_config.aggr_mode == AGGR_NONE)
|
|
fprintf(os->fh, " ");
|
|
fprintf(os->fh, " ");
|
|
}
|
|
|
|
static void print_metric_std(void *ctx, const char *color, const char *fmt,
|
|
const char *unit, double val)
|
|
{
|
|
struct outstate *os = ctx;
|
|
FILE *out = os->fh;
|
|
int n;
|
|
bool newline = os->newline;
|
|
|
|
os->newline = false;
|
|
|
|
if (unit == NULL || fmt == NULL) {
|
|
fprintf(out, "%-*s", METRIC_LEN, "");
|
|
return;
|
|
}
|
|
|
|
if (newline)
|
|
do_new_line_std(os);
|
|
|
|
n = fprintf(out, " # ");
|
|
if (color)
|
|
n += color_fprintf(out, color, fmt, val);
|
|
else
|
|
n += fprintf(out, fmt, val);
|
|
fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
|
|
}
|
|
|
|
static void new_line_csv(void *ctx)
|
|
{
|
|
struct outstate *os = ctx;
|
|
int i;
|
|
|
|
fputc('\n', os->fh);
|
|
if (os->prefix)
|
|
fprintf(os->fh, "%s%s", os->prefix, csv_sep);
|
|
aggr_printout(os->evsel, os->id, os->nr);
|
|
for (i = 0; i < os->nfields; i++)
|
|
fputs(csv_sep, os->fh);
|
|
}
|
|
|
|
static void print_metric_csv(void *ctx,
|
|
const char *color __maybe_unused,
|
|
const char *fmt, const char *unit, double val)
|
|
{
|
|
struct outstate *os = ctx;
|
|
FILE *out = os->fh;
|
|
char buf[64], *vals, *ends;
|
|
|
|
if (unit == NULL || fmt == NULL) {
|
|
fprintf(out, "%s%s", csv_sep, csv_sep);
|
|
return;
|
|
}
|
|
snprintf(buf, sizeof(buf), fmt, val);
|
|
ends = vals = ltrim(buf);
|
|
while (isdigit(*ends) || *ends == '.')
|
|
ends++;
|
|
*ends = 0;
|
|
while (isspace(*unit))
|
|
unit++;
|
|
fprintf(out, "%s%s%s%s", csv_sep, vals, csv_sep, unit);
|
|
}
|
|
|
|
#define METRIC_ONLY_LEN 20
|
|
|
|
/* Filter out some columns that don't work well in metrics only mode */
|
|
|
|
static bool valid_only_metric(const char *unit)
|
|
{
|
|
if (!unit)
|
|
return false;
|
|
if (strstr(unit, "/sec") ||
|
|
strstr(unit, "hz") ||
|
|
strstr(unit, "Hz") ||
|
|
strstr(unit, "CPUs utilized"))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static const char *fixunit(char *buf, struct perf_evsel *evsel,
|
|
const char *unit)
|
|
{
|
|
if (!strncmp(unit, "of all", 6)) {
|
|
snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
|
|
unit);
|
|
return buf;
|
|
}
|
|
return unit;
|
|
}
|
|
|
|
static void print_metric_only(void *ctx, const char *color, const char *fmt,
|
|
const char *unit, double val)
|
|
{
|
|
struct outstate *os = ctx;
|
|
FILE *out = os->fh;
|
|
int n;
|
|
char buf[1024];
|
|
unsigned mlen = METRIC_ONLY_LEN;
|
|
|
|
if (!valid_only_metric(unit))
|
|
return;
|
|
unit = fixunit(buf, os->evsel, unit);
|
|
if (color)
|
|
n = color_fprintf(out, color, fmt, val);
|
|
else
|
|
n = fprintf(out, fmt, val);
|
|
if (n > METRIC_ONLY_LEN)
|
|
n = METRIC_ONLY_LEN;
|
|
if (mlen < strlen(unit))
|
|
mlen = strlen(unit) + 1;
|
|
fprintf(out, "%*s", mlen - n, "");
|
|
}
|
|
|
|
static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
|
|
const char *fmt,
|
|
const char *unit, double val)
|
|
{
|
|
struct outstate *os = ctx;
|
|
FILE *out = os->fh;
|
|
char buf[64], *vals, *ends;
|
|
char tbuf[1024];
|
|
|
|
if (!valid_only_metric(unit))
|
|
return;
|
|
unit = fixunit(tbuf, os->evsel, unit);
|
|
snprintf(buf, sizeof buf, fmt, val);
|
|
ends = vals = ltrim(buf);
|
|
while (isdigit(*ends) || *ends == '.')
|
|
ends++;
|
|
*ends = 0;
|
|
fprintf(out, "%s%s", vals, csv_sep);
|
|
}
|
|
|
|
static void new_line_metric(void *ctx __maybe_unused)
|
|
{
|
|
}
|
|
|
|
static void print_metric_header(void *ctx, const char *color __maybe_unused,
|
|
const char *fmt __maybe_unused,
|
|
const char *unit, double val __maybe_unused)
|
|
{
|
|
struct outstate *os = ctx;
|
|
char tbuf[1024];
|
|
|
|
if (!valid_only_metric(unit))
|
|
return;
|
|
unit = fixunit(tbuf, os->evsel, unit);
|
|
if (csv_output)
|
|
fprintf(os->fh, "%s%s", unit, csv_sep);
|
|
else
|
|
fprintf(os->fh, "%-*s ", METRIC_ONLY_LEN, unit);
|
|
}
|
|
|
|
static void nsec_printout(int id, int nr, struct perf_evsel *evsel, double avg)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
double msecs = avg / NSEC_PER_MSEC;
|
|
const char *fmt_v, *fmt_n;
|
|
char name[25];
|
|
|
|
fmt_v = csv_output ? "%.6f%s" : "%18.6f%s";
|
|
fmt_n = csv_output ? "%s" : "%-25s";
|
|
|
|
aggr_printout(evsel, id, nr);
|
|
|
|
scnprintf(name, sizeof(name), "%s%s",
|
|
perf_evsel__name(evsel), csv_output ? "" : " (msec)");
|
|
|
|
fprintf(output, fmt_v, msecs, csv_sep);
|
|
|
|
if (csv_output)
|
|
fprintf(output, "%s%s", evsel->unit, csv_sep);
|
|
else
|
|
fprintf(output, "%-*s%s", unit_width, evsel->unit, csv_sep);
|
|
|
|
fprintf(output, fmt_n, name);
|
|
|
|
if (evsel->cgrp)
|
|
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
|
|
}
|
|
|
|
static int first_shadow_cpu(struct perf_evsel *evsel, int id)
|
|
{
|
|
int i;
|
|
|
|
if (!aggr_get_id)
|
|
return 0;
|
|
|
|
if (stat_config.aggr_mode == AGGR_NONE)
|
|
return id;
|
|
|
|
if (stat_config.aggr_mode == AGGR_GLOBAL)
|
|
return 0;
|
|
|
|
for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
|
|
int cpu2 = perf_evsel__cpus(evsel)->map[i];
|
|
|
|
if (aggr_get_id(evsel_list->cpus, cpu2) == id)
|
|
return cpu2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
double sc = evsel->scale;
|
|
const char *fmt;
|
|
|
|
if (csv_output) {
|
|
fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
|
|
} else {
|
|
if (big_num)
|
|
fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
|
|
else
|
|
fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
|
|
}
|
|
|
|
aggr_printout(evsel, id, nr);
|
|
|
|
fprintf(output, fmt, avg, csv_sep);
|
|
|
|
if (evsel->unit)
|
|
fprintf(output, "%-*s%s",
|
|
csv_output ? 0 : unit_width,
|
|
evsel->unit, csv_sep);
|
|
|
|
fprintf(output, "%-*s", csv_output ? 0 : 25, perf_evsel__name(evsel));
|
|
|
|
if (evsel->cgrp)
|
|
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
|
|
}
|
|
|
|
static bool is_mixed_hw_group(struct perf_evsel *counter)
|
|
{
|
|
struct perf_evlist *evlist = counter->evlist;
|
|
u32 pmu_type = counter->attr.type;
|
|
struct perf_evsel *pos;
|
|
|
|
if (counter->nr_members < 2)
|
|
return false;
|
|
|
|
evlist__for_each_entry(evlist, pos) {
|
|
/* software events can be part of any hardware group */
|
|
if (pos->attr.type == PERF_TYPE_SOFTWARE)
|
|
continue;
|
|
if (pmu_type == PERF_TYPE_SOFTWARE) {
|
|
pmu_type = pos->attr.type;
|
|
continue;
|
|
}
|
|
if (pmu_type != pos->attr.type)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void printout(int id, int nr, struct perf_evsel *counter, double uval,
|
|
char *prefix, u64 run, u64 ena, double noise,
|
|
struct runtime_stat *st)
|
|
{
|
|
struct perf_stat_output_ctx out;
|
|
struct outstate os = {
|
|
.fh = stat_config.output,
|
|
.prefix = prefix ? prefix : "",
|
|
.id = id,
|
|
.nr = nr,
|
|
.evsel = counter,
|
|
};
|
|
print_metric_t pm = print_metric_std;
|
|
void (*nl)(void *);
|
|
|
|
if (metric_only) {
|
|
nl = new_line_metric;
|
|
if (csv_output)
|
|
pm = print_metric_only_csv;
|
|
else
|
|
pm = print_metric_only;
|
|
} else
|
|
nl = new_line_std;
|
|
|
|
if (csv_output && !metric_only) {
|
|
static int aggr_fields[] = {
|
|
[AGGR_GLOBAL] = 0,
|
|
[AGGR_THREAD] = 1,
|
|
[AGGR_NONE] = 1,
|
|
[AGGR_SOCKET] = 2,
|
|
[AGGR_CORE] = 2,
|
|
};
|
|
|
|
pm = print_metric_csv;
|
|
nl = new_line_csv;
|
|
os.nfields = 3;
|
|
os.nfields += aggr_fields[stat_config.aggr_mode];
|
|
if (counter->cgrp)
|
|
os.nfields++;
|
|
}
|
|
if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
|
|
if (metric_only) {
|
|
pm(&os, NULL, "", "", 0);
|
|
return;
|
|
}
|
|
aggr_printout(counter, id, nr);
|
|
|
|
fprintf(stat_config.output, "%*s%s",
|
|
csv_output ? 0 : 18,
|
|
counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
|
|
csv_sep);
|
|
|
|
if (counter->supported) {
|
|
print_free_counters_hint = 1;
|
|
if (is_mixed_hw_group(counter))
|
|
print_mixed_hw_group_error = 1;
|
|
}
|
|
|
|
fprintf(stat_config.output, "%-*s%s",
|
|
csv_output ? 0 : unit_width,
|
|
counter->unit, csv_sep);
|
|
|
|
fprintf(stat_config.output, "%*s",
|
|
csv_output ? 0 : -25,
|
|
perf_evsel__name(counter));
|
|
|
|
if (counter->cgrp)
|
|
fprintf(stat_config.output, "%s%s",
|
|
csv_sep, counter->cgrp->name);
|
|
|
|
if (!csv_output)
|
|
pm(&os, NULL, NULL, "", 0);
|
|
print_noise(counter, noise);
|
|
print_running(run, ena);
|
|
if (csv_output)
|
|
pm(&os, NULL, NULL, "", 0);
|
|
return;
|
|
}
|
|
|
|
if (metric_only)
|
|
/* nothing */;
|
|
else if (nsec_counter(counter))
|
|
nsec_printout(id, nr, counter, uval);
|
|
else
|
|
abs_printout(id, nr, counter, uval);
|
|
|
|
out.print_metric = pm;
|
|
out.new_line = nl;
|
|
out.ctx = &os;
|
|
out.force_header = false;
|
|
|
|
if (csv_output && !metric_only) {
|
|
print_noise(counter, noise);
|
|
print_running(run, ena);
|
|
}
|
|
|
|
perf_stat__print_shadow_stats(counter, uval,
|
|
first_shadow_cpu(counter, id),
|
|
&out, &metric_events, st);
|
|
if (!csv_output && !metric_only) {
|
|
print_noise(counter, noise);
|
|
print_running(run, ena);
|
|
}
|
|
}
|
|
|
|
static void aggr_update_shadow(void)
|
|
{
|
|
int cpu, s2, id, s;
|
|
u64 val;
|
|
struct perf_evsel *counter;
|
|
|
|
for (s = 0; s < aggr_map->nr; s++) {
|
|
id = aggr_map->map[s];
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
val = 0;
|
|
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
|
|
s2 = aggr_get_id(evsel_list->cpus, cpu);
|
|
if (s2 != id)
|
|
continue;
|
|
val += perf_counts(counter->counts, cpu, 0)->val;
|
|
}
|
|
perf_stat__update_shadow_stats(counter, val,
|
|
first_shadow_cpu(counter, id),
|
|
&rt_stat);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void uniquify_event_name(struct perf_evsel *counter)
|
|
{
|
|
char *new_name;
|
|
char *config;
|
|
|
|
if (counter->uniquified_name ||
|
|
!counter->pmu_name || !strncmp(counter->name, counter->pmu_name,
|
|
strlen(counter->pmu_name)))
|
|
return;
|
|
|
|
config = strchr(counter->name, '/');
|
|
if (config) {
|
|
if (asprintf(&new_name,
|
|
"%s%s", counter->pmu_name, config) > 0) {
|
|
free(counter->name);
|
|
counter->name = new_name;
|
|
}
|
|
} else {
|
|
if (asprintf(&new_name,
|
|
"%s [%s]", counter->name, counter->pmu_name) > 0) {
|
|
free(counter->name);
|
|
counter->name = new_name;
|
|
}
|
|
}
|
|
|
|
counter->uniquified_name = true;
|
|
}
|
|
|
|
static void collect_all_aliases(struct perf_evsel *counter,
|
|
void (*cb)(struct perf_evsel *counter, void *data,
|
|
bool first),
|
|
void *data)
|
|
{
|
|
struct perf_evsel *alias;
|
|
|
|
alias = list_prepare_entry(counter, &(evsel_list->entries), node);
|
|
list_for_each_entry_continue (alias, &evsel_list->entries, node) {
|
|
if (strcmp(perf_evsel__name(alias), perf_evsel__name(counter)) ||
|
|
alias->scale != counter->scale ||
|
|
alias->cgrp != counter->cgrp ||
|
|
strcmp(alias->unit, counter->unit) ||
|
|
nsec_counter(alias) != nsec_counter(counter))
|
|
break;
|
|
alias->merged_stat = true;
|
|
cb(alias, data, false);
|
|
}
|
|
}
|
|
|
|
static bool collect_data(struct perf_evsel *counter,
|
|
void (*cb)(struct perf_evsel *counter, void *data,
|
|
bool first),
|
|
void *data)
|
|
{
|
|
if (counter->merged_stat)
|
|
return false;
|
|
cb(counter, data, true);
|
|
if (no_merge)
|
|
uniquify_event_name(counter);
|
|
else if (counter->auto_merge_stats)
|
|
collect_all_aliases(counter, cb, data);
|
|
return true;
|
|
}
|
|
|
|
struct aggr_data {
|
|
u64 ena, run, val;
|
|
int id;
|
|
int nr;
|
|
int cpu;
|
|
};
|
|
|
|
static void aggr_cb(struct perf_evsel *counter, void *data, bool first)
|
|
{
|
|
struct aggr_data *ad = data;
|
|
int cpu, s2;
|
|
|
|
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
|
|
struct perf_counts_values *counts;
|
|
|
|
s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
|
|
if (s2 != ad->id)
|
|
continue;
|
|
if (first)
|
|
ad->nr++;
|
|
counts = perf_counts(counter->counts, cpu, 0);
|
|
/*
|
|
* When any result is bad, make them all to give
|
|
* consistent output in interval mode.
|
|
*/
|
|
if (counts->ena == 0 || counts->run == 0 ||
|
|
counter->counts->scaled == -1) {
|
|
ad->ena = 0;
|
|
ad->run = 0;
|
|
break;
|
|
}
|
|
ad->val += counts->val;
|
|
ad->ena += counts->ena;
|
|
ad->run += counts->run;
|
|
}
|
|
}
|
|
|
|
static void print_aggr(char *prefix)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
struct perf_evsel *counter;
|
|
int s, id, nr;
|
|
double uval;
|
|
u64 ena, run, val;
|
|
bool first;
|
|
|
|
if (!(aggr_map || aggr_get_id))
|
|
return;
|
|
|
|
aggr_update_shadow();
|
|
|
|
/*
|
|
* With metric_only everything is on a single line.
|
|
* Without each counter has its own line.
|
|
*/
|
|
for (s = 0; s < aggr_map->nr; s++) {
|
|
struct aggr_data ad;
|
|
if (prefix && metric_only)
|
|
fprintf(output, "%s", prefix);
|
|
|
|
ad.id = id = aggr_map->map[s];
|
|
first = true;
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
if (is_duration_time(counter))
|
|
continue;
|
|
|
|
ad.val = ad.ena = ad.run = 0;
|
|
ad.nr = 0;
|
|
if (!collect_data(counter, aggr_cb, &ad))
|
|
continue;
|
|
nr = ad.nr;
|
|
ena = ad.ena;
|
|
run = ad.run;
|
|
val = ad.val;
|
|
if (first && metric_only) {
|
|
first = false;
|
|
aggr_printout(counter, id, nr);
|
|
}
|
|
if (prefix && !metric_only)
|
|
fprintf(output, "%s", prefix);
|
|
|
|
uval = val * counter->scale;
|
|
printout(id, nr, counter, uval, prefix, run, ena, 1.0,
|
|
&rt_stat);
|
|
if (!metric_only)
|
|
fputc('\n', output);
|
|
}
|
|
if (metric_only)
|
|
fputc('\n', output);
|
|
}
|
|
}
|
|
|
|
static int cmp_val(const void *a, const void *b)
|
|
{
|
|
return ((struct perf_aggr_thread_value *)b)->val -
|
|
((struct perf_aggr_thread_value *)a)->val;
|
|
}
|
|
|
|
static struct perf_aggr_thread_value *sort_aggr_thread(
|
|
struct perf_evsel *counter,
|
|
int nthreads, int ncpus,
|
|
int *ret)
|
|
{
|
|
int cpu, thread, i = 0;
|
|
double uval;
|
|
struct perf_aggr_thread_value *buf;
|
|
|
|
buf = calloc(nthreads, sizeof(struct perf_aggr_thread_value));
|
|
if (!buf)
|
|
return NULL;
|
|
|
|
for (thread = 0; thread < nthreads; thread++) {
|
|
u64 ena = 0, run = 0, val = 0;
|
|
|
|
for (cpu = 0; cpu < ncpus; cpu++) {
|
|
val += perf_counts(counter->counts, cpu, thread)->val;
|
|
ena += perf_counts(counter->counts, cpu, thread)->ena;
|
|
run += perf_counts(counter->counts, cpu, thread)->run;
|
|
}
|
|
|
|
uval = val * counter->scale;
|
|
|
|
/*
|
|
* Skip value 0 when enabling --per-thread globally,
|
|
* otherwise too many 0 output.
|
|
*/
|
|
if (uval == 0.0 && target__has_per_thread(&target))
|
|
continue;
|
|
|
|
buf[i].counter = counter;
|
|
buf[i].id = thread;
|
|
buf[i].uval = uval;
|
|
buf[i].val = val;
|
|
buf[i].run = run;
|
|
buf[i].ena = ena;
|
|
i++;
|
|
}
|
|
|
|
qsort(buf, i, sizeof(struct perf_aggr_thread_value), cmp_val);
|
|
|
|
if (ret)
|
|
*ret = i;
|
|
|
|
return buf;
|
|
}
|
|
|
|
static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
int nthreads = thread_map__nr(counter->threads);
|
|
int ncpus = cpu_map__nr(counter->cpus);
|
|
int thread, sorted_threads, id;
|
|
struct perf_aggr_thread_value *buf;
|
|
|
|
buf = sort_aggr_thread(counter, nthreads, ncpus, &sorted_threads);
|
|
if (!buf) {
|
|
perror("cannot sort aggr thread");
|
|
return;
|
|
}
|
|
|
|
for (thread = 0; thread < sorted_threads; thread++) {
|
|
if (prefix)
|
|
fprintf(output, "%s", prefix);
|
|
|
|
id = buf[thread].id;
|
|
if (stat_config.stats)
|
|
printout(id, 0, buf[thread].counter, buf[thread].uval,
|
|
prefix, buf[thread].run, buf[thread].ena, 1.0,
|
|
&stat_config.stats[id]);
|
|
else
|
|
printout(id, 0, buf[thread].counter, buf[thread].uval,
|
|
prefix, buf[thread].run, buf[thread].ena, 1.0,
|
|
&rt_stat);
|
|
fputc('\n', output);
|
|
}
|
|
|
|
free(buf);
|
|
}
|
|
|
|
struct caggr_data {
|
|
double avg, avg_enabled, avg_running;
|
|
};
|
|
|
|
static void counter_aggr_cb(struct perf_evsel *counter, void *data,
|
|
bool first __maybe_unused)
|
|
{
|
|
struct caggr_data *cd = data;
|
|
struct perf_stat_evsel *ps = counter->stats;
|
|
|
|
cd->avg += avg_stats(&ps->res_stats[0]);
|
|
cd->avg_enabled += avg_stats(&ps->res_stats[1]);
|
|
cd->avg_running += avg_stats(&ps->res_stats[2]);
|
|
}
|
|
|
|
/*
|
|
* Print out the results of a single counter:
|
|
* aggregated counts in system-wide mode
|
|
*/
|
|
static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
double uval;
|
|
struct caggr_data cd = { .avg = 0.0 };
|
|
|
|
if (!collect_data(counter, counter_aggr_cb, &cd))
|
|
return;
|
|
|
|
if (prefix && !metric_only)
|
|
fprintf(output, "%s", prefix);
|
|
|
|
uval = cd.avg * counter->scale;
|
|
printout(-1, 0, counter, uval, prefix, cd.avg_running, cd.avg_enabled,
|
|
cd.avg, &rt_stat);
|
|
if (!metric_only)
|
|
fprintf(output, "\n");
|
|
}
|
|
|
|
static void counter_cb(struct perf_evsel *counter, void *data,
|
|
bool first __maybe_unused)
|
|
{
|
|
struct aggr_data *ad = data;
|
|
|
|
ad->val += perf_counts(counter->counts, ad->cpu, 0)->val;
|
|
ad->ena += perf_counts(counter->counts, ad->cpu, 0)->ena;
|
|
ad->run += perf_counts(counter->counts, ad->cpu, 0)->run;
|
|
}
|
|
|
|
/*
|
|
* Print out the results of a single counter:
|
|
* does not use aggregated count in system-wide
|
|
*/
|
|
static void print_counter(struct perf_evsel *counter, char *prefix)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
u64 ena, run, val;
|
|
double uval;
|
|
int cpu;
|
|
|
|
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
|
|
struct aggr_data ad = { .cpu = cpu };
|
|
|
|
if (!collect_data(counter, counter_cb, &ad))
|
|
return;
|
|
val = ad.val;
|
|
ena = ad.ena;
|
|
run = ad.run;
|
|
|
|
if (prefix)
|
|
fprintf(output, "%s", prefix);
|
|
|
|
uval = val * counter->scale;
|
|
printout(cpu, 0, counter, uval, prefix, run, ena, 1.0,
|
|
&rt_stat);
|
|
|
|
fputc('\n', output);
|
|
}
|
|
}
|
|
|
|
static void print_no_aggr_metric(char *prefix)
|
|
{
|
|
int cpu;
|
|
int nrcpus = 0;
|
|
struct perf_evsel *counter;
|
|
u64 ena, run, val;
|
|
double uval;
|
|
|
|
nrcpus = evsel_list->cpus->nr;
|
|
for (cpu = 0; cpu < nrcpus; cpu++) {
|
|
bool first = true;
|
|
|
|
if (prefix)
|
|
fputs(prefix, stat_config.output);
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
if (is_duration_time(counter))
|
|
continue;
|
|
if (first) {
|
|
aggr_printout(counter, cpu, 0);
|
|
first = false;
|
|
}
|
|
val = perf_counts(counter->counts, cpu, 0)->val;
|
|
ena = perf_counts(counter->counts, cpu, 0)->ena;
|
|
run = perf_counts(counter->counts, cpu, 0)->run;
|
|
|
|
uval = val * counter->scale;
|
|
printout(cpu, 0, counter, uval, prefix, run, ena, 1.0,
|
|
&rt_stat);
|
|
}
|
|
fputc('\n', stat_config.output);
|
|
}
|
|
}
|
|
|
|
static int aggr_header_lens[] = {
|
|
[AGGR_CORE] = 18,
|
|
[AGGR_SOCKET] = 12,
|
|
[AGGR_NONE] = 6,
|
|
[AGGR_THREAD] = 24,
|
|
[AGGR_GLOBAL] = 0,
|
|
};
|
|
|
|
static const char *aggr_header_csv[] = {
|
|
[AGGR_CORE] = "core,cpus,",
|
|
[AGGR_SOCKET] = "socket,cpus",
|
|
[AGGR_NONE] = "cpu,",
|
|
[AGGR_THREAD] = "comm-pid,",
|
|
[AGGR_GLOBAL] = ""
|
|
};
|
|
|
|
static void print_metric_headers(const char *prefix, bool no_indent)
|
|
{
|
|
struct perf_stat_output_ctx out;
|
|
struct perf_evsel *counter;
|
|
struct outstate os = {
|
|
.fh = stat_config.output
|
|
};
|
|
|
|
if (prefix)
|
|
fprintf(stat_config.output, "%s", prefix);
|
|
|
|
if (!csv_output && !no_indent)
|
|
fprintf(stat_config.output, "%*s",
|
|
aggr_header_lens[stat_config.aggr_mode], "");
|
|
if (csv_output) {
|
|
if (stat_config.interval)
|
|
fputs("time,", stat_config.output);
|
|
fputs(aggr_header_csv[stat_config.aggr_mode],
|
|
stat_config.output);
|
|
}
|
|
|
|
/* Print metrics headers only */
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
if (is_duration_time(counter))
|
|
continue;
|
|
os.evsel = counter;
|
|
out.ctx = &os;
|
|
out.print_metric = print_metric_header;
|
|
out.new_line = new_line_metric;
|
|
out.force_header = true;
|
|
os.evsel = counter;
|
|
perf_stat__print_shadow_stats(counter, 0,
|
|
0,
|
|
&out,
|
|
&metric_events,
|
|
&rt_stat);
|
|
}
|
|
fputc('\n', stat_config.output);
|
|
}
|
|
|
|
static void print_interval(char *prefix, struct timespec *ts)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
static int num_print_interval;
|
|
|
|
sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, csv_sep);
|
|
|
|
if (num_print_interval == 0 && !csv_output) {
|
|
switch (stat_config.aggr_mode) {
|
|
case AGGR_SOCKET:
|
|
fprintf(output, "# time socket cpus");
|
|
if (!metric_only)
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
|
break;
|
|
case AGGR_CORE:
|
|
fprintf(output, "# time core cpus");
|
|
if (!metric_only)
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
|
break;
|
|
case AGGR_NONE:
|
|
fprintf(output, "# time CPU");
|
|
if (!metric_only)
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
|
break;
|
|
case AGGR_THREAD:
|
|
fprintf(output, "# time comm-pid");
|
|
if (!metric_only)
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
|
break;
|
|
case AGGR_GLOBAL:
|
|
default:
|
|
fprintf(output, "# time");
|
|
if (!metric_only)
|
|
fprintf(output, " counts %*s events\n", unit_width, "unit");
|
|
case AGGR_UNSET:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (num_print_interval == 0 && metric_only)
|
|
print_metric_headers(" ", true);
|
|
if (++num_print_interval == 25)
|
|
num_print_interval = 0;
|
|
}
|
|
|
|
static void print_header(int argc, const char **argv)
|
|
{
|
|
FILE *output = stat_config.output;
|
|
int i;
|
|
|
|
fflush(stdout);
|
|
|
|
if (!csv_output) {
|
|
fprintf(output, "\n");
|
|
fprintf(output, " Performance counter stats for ");
|
|
if (target.system_wide)
|
|
fprintf(output, "\'system wide");
|
|
else if (target.cpu_list)
|
|
fprintf(output, "\'CPU(s) %s", target.cpu_list);
|
|
else if (!target__has_task(&target)) {
|
|
fprintf(output, "\'%s", argv ? argv[0] : "pipe");
|
|
for (i = 1; argv && (i < argc); i++)
|
|
fprintf(output, " %s", argv[i]);
|
|
} else if (target.pid)
|
|
fprintf(output, "process id \'%s", target.pid);
|
|
else
|
|
fprintf(output, "thread id \'%s", target.tid);
|
|
|
|
fprintf(output, "\'");
|
|
if (run_count > 1)
|
|
fprintf(output, " (%d runs)", run_count);
|
|
fprintf(output, ":\n\n");
|
|
}
|
|
}
|
|
|
|
static int get_precision(double num)
|
|
{
|
|
if (num > 1)
|
|
return 0;
|
|
|
|
return lround(ceil(-log10(num)));
|
|
}
|
|
|
|
static void print_table(FILE *output, int precision, double avg)
|
|
{
|
|
char tmp[64];
|
|
int idx, indent = 0;
|
|
|
|
scnprintf(tmp, 64, " %17.*f", precision, avg);
|
|
while (tmp[indent] == ' ')
|
|
indent++;
|
|
|
|
fprintf(output, "%*s# Table of individual measurements:\n", indent, "");
|
|
|
|
for (idx = 0; idx < run_count; idx++) {
|
|
double run = (double) walltime_run[idx] / NSEC_PER_SEC;
|
|
int h, n = 1 + abs((int) (100.0 * (run - avg)/run) / 5);
|
|
|
|
fprintf(output, " %17.*f (%+.*f) ",
|
|
precision, run, precision, run - avg);
|
|
|
|
for (h = 0; h < n; h++)
|
|
fprintf(output, "#");
|
|
|
|
fprintf(output, "\n");
|
|
}
|
|
|
|
fprintf(output, "\n%*s# Final result:\n", indent, "");
|
|
}
|
|
|
|
static double timeval2double(struct timeval *t)
|
|
{
|
|
return t->tv_sec + (double) t->tv_usec/USEC_PER_SEC;
|
|
}
|
|
|
|
static void print_footer(void)
|
|
{
|
|
double avg = avg_stats(&walltime_nsecs_stats) / NSEC_PER_SEC;
|
|
FILE *output = stat_config.output;
|
|
int n;
|
|
|
|
if (!null_run)
|
|
fprintf(output, "\n");
|
|
|
|
if (run_count == 1) {
|
|
fprintf(output, " %17.9f seconds time elapsed", avg);
|
|
|
|
if (ru_display) {
|
|
double ru_utime = timeval2double(&ru_data.ru_utime);
|
|
double ru_stime = timeval2double(&ru_data.ru_stime);
|
|
|
|
fprintf(output, "\n\n");
|
|
fprintf(output, " %17.9f seconds user\n", ru_utime);
|
|
fprintf(output, " %17.9f seconds sys\n", ru_stime);
|
|
}
|
|
} else {
|
|
double sd = stddev_stats(&walltime_nsecs_stats) / NSEC_PER_SEC;
|
|
/*
|
|
* Display at most 2 more significant
|
|
* digits than the stddev inaccuracy.
|
|
*/
|
|
int precision = get_precision(sd) + 2;
|
|
|
|
if (walltime_run_table)
|
|
print_table(output, precision, avg);
|
|
|
|
fprintf(output, " %17.*f +- %.*f seconds time elapsed",
|
|
precision, avg, precision, sd);
|
|
|
|
print_noise_pct(sd, avg);
|
|
}
|
|
fprintf(output, "\n\n");
|
|
|
|
if (print_free_counters_hint &&
|
|
sysctl__read_int("kernel/nmi_watchdog", &n) >= 0 &&
|
|
n > 0)
|
|
fprintf(output,
|
|
"Some events weren't counted. Try disabling the NMI watchdog:\n"
|
|
" echo 0 > /proc/sys/kernel/nmi_watchdog\n"
|
|
" perf stat ...\n"
|
|
" echo 1 > /proc/sys/kernel/nmi_watchdog\n");
|
|
|
|
if (print_mixed_hw_group_error)
|
|
fprintf(output,
|
|
"The events in group usually have to be from "
|
|
"the same PMU. Try reorganizing the group.\n");
|
|
}
|
|
|
|
static void print_counters(struct timespec *ts, int argc, const char **argv)
|
|
{
|
|
int interval = stat_config.interval;
|
|
struct perf_evsel *counter;
|
|
char buf[64], *prefix = NULL;
|
|
|
|
/* Do not print anything if we record to the pipe. */
|
|
if (STAT_RECORD && perf_stat.data.is_pipe)
|
|
return;
|
|
|
|
if (interval)
|
|
print_interval(prefix = buf, ts);
|
|
else
|
|
print_header(argc, argv);
|
|
|
|
if (metric_only) {
|
|
static int num_print_iv;
|
|
|
|
if (num_print_iv == 0 && !interval)
|
|
print_metric_headers(prefix, false);
|
|
if (num_print_iv++ == 25)
|
|
num_print_iv = 0;
|
|
if (stat_config.aggr_mode == AGGR_GLOBAL && prefix)
|
|
fprintf(stat_config.output, "%s", prefix);
|
|
}
|
|
|
|
switch (stat_config.aggr_mode) {
|
|
case AGGR_CORE:
|
|
case AGGR_SOCKET:
|
|
print_aggr(prefix);
|
|
break;
|
|
case AGGR_THREAD:
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
if (is_duration_time(counter))
|
|
continue;
|
|
print_aggr_thread(counter, prefix);
|
|
}
|
|
break;
|
|
case AGGR_GLOBAL:
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
if (is_duration_time(counter))
|
|
continue;
|
|
print_counter_aggr(counter, prefix);
|
|
}
|
|
if (metric_only)
|
|
fputc('\n', stat_config.output);
|
|
break;
|
|
case AGGR_NONE:
|
|
if (metric_only)
|
|
print_no_aggr_metric(prefix);
|
|
else {
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
if (is_duration_time(counter))
|
|
continue;
|
|
print_counter(counter, prefix);
|
|
}
|
|
}
|
|
break;
|
|
case AGGR_UNSET:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!interval && !csv_output)
|
|
print_footer();
|
|
|
|
fflush(stat_config.output);
|
|
}
|
|
|
|
static volatile int signr = -1;
|
|
|
|
static void skip_signal(int signo)
|
|
{
|
|
if ((child_pid == -1) || stat_config.interval)
|
|
done = 1;
|
|
|
|
signr = signo;
|
|
/*
|
|
* render child_pid harmless
|
|
* won't send SIGTERM to a random
|
|
* process in case of race condition
|
|
* and fast PID recycling
|
|
*/
|
|
child_pid = -1;
|
|
}
|
|
|
|
static void sig_atexit(void)
|
|
{
|
|
sigset_t set, oset;
|
|
|
|
/*
|
|
* avoid race condition with SIGCHLD handler
|
|
* in skip_signal() which is modifying child_pid
|
|
* goal is to avoid send SIGTERM to a random
|
|
* process
|
|
*/
|
|
sigemptyset(&set);
|
|
sigaddset(&set, SIGCHLD);
|
|
sigprocmask(SIG_BLOCK, &set, &oset);
|
|
|
|
if (child_pid != -1)
|
|
kill(child_pid, SIGTERM);
|
|
|
|
sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
|
|
if (signr == -1)
|
|
return;
|
|
|
|
signal(signr, SIG_DFL);
|
|
kill(getpid(), signr);
|
|
}
|
|
|
|
static int stat__set_big_num(const struct option *opt __maybe_unused,
|
|
const char *s __maybe_unused, int unset)
|
|
{
|
|
big_num_opt = unset ? 0 : 1;
|
|
return 0;
|
|
}
|
|
|
|
static int enable_metric_only(const struct option *opt __maybe_unused,
|
|
const char *s __maybe_unused, int unset)
|
|
{
|
|
force_metric_only = true;
|
|
metric_only = !unset;
|
|
return 0;
|
|
}
|
|
|
|
static int parse_metric_groups(const struct option *opt,
|
|
const char *str,
|
|
int unset __maybe_unused)
|
|
{
|
|
return metricgroup__parse_groups(opt, str, &metric_events);
|
|
}
|
|
|
|
static const struct option stat_options[] = {
|
|
OPT_BOOLEAN('T', "transaction", &transaction_run,
|
|
"hardware transaction statistics"),
|
|
OPT_CALLBACK('e', "event", &evsel_list, "event",
|
|
"event selector. use 'perf list' to list available events",
|
|
parse_events_option),
|
|
OPT_CALLBACK(0, "filter", &evsel_list, "filter",
|
|
"event filter", parse_filter),
|
|
OPT_BOOLEAN('i', "no-inherit", &no_inherit,
|
|
"child tasks do not inherit counters"),
|
|
OPT_STRING('p', "pid", &target.pid, "pid",
|
|
"stat events on existing process id"),
|
|
OPT_STRING('t', "tid", &target.tid, "tid",
|
|
"stat events on existing thread id"),
|
|
OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
|
|
"system-wide collection from all CPUs"),
|
|
OPT_BOOLEAN('g', "group", &group,
|
|
"put the counters into a counter group"),
|
|
OPT_BOOLEAN('c', "scale", &stat_config.scale, "scale/normalize counters"),
|
|
OPT_INCR('v', "verbose", &verbose,
|
|
"be more verbose (show counter open errors, etc)"),
|
|
OPT_INTEGER('r', "repeat", &run_count,
|
|
"repeat command and print average + stddev (max: 100, forever: 0)"),
|
|
OPT_BOOLEAN(0, "table", &walltime_run_table,
|
|
"display details about each run (only with -r option)"),
|
|
OPT_BOOLEAN('n', "null", &null_run,
|
|
"null run - dont start any counters"),
|
|
OPT_INCR('d', "detailed", &detailed_run,
|
|
"detailed run - start a lot of events"),
|
|
OPT_BOOLEAN('S', "sync", &sync_run,
|
|
"call sync() before starting a run"),
|
|
OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
|
|
"print large numbers with thousands\' separators",
|
|
stat__set_big_num),
|
|
OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
|
|
"list of cpus to monitor in system-wide"),
|
|
OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode,
|
|
"disable CPU count aggregation", AGGR_NONE),
|
|
OPT_BOOLEAN(0, "no-merge", &no_merge, "Do not merge identical named events"),
|
|
OPT_STRING('x', "field-separator", &csv_sep, "separator",
|
|
"print counts with custom separator"),
|
|
OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
|
|
"monitor event in cgroup name only", parse_cgroups),
|
|
OPT_STRING('o', "output", &output_name, "file", "output file name"),
|
|
OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
|
|
OPT_INTEGER(0, "log-fd", &output_fd,
|
|
"log output to fd, instead of stderr"),
|
|
OPT_STRING(0, "pre", &pre_cmd, "command",
|
|
"command to run prior to the measured command"),
|
|
OPT_STRING(0, "post", &post_cmd, "command",
|
|
"command to run after to the measured command"),
|
|
OPT_UINTEGER('I', "interval-print", &stat_config.interval,
|
|
"print counts at regular interval in ms "
|
|
"(overhead is possible for values <= 100ms)"),
|
|
OPT_INTEGER(0, "interval-count", &stat_config.times,
|
|
"print counts for fixed number of times"),
|
|
OPT_UINTEGER(0, "timeout", &stat_config.timeout,
|
|
"stop workload and print counts after a timeout period in ms (>= 10ms)"),
|
|
OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode,
|
|
"aggregate counts per processor socket", AGGR_SOCKET),
|
|
OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode,
|
|
"aggregate counts per physical processor core", AGGR_CORE),
|
|
OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode,
|
|
"aggregate counts per thread", AGGR_THREAD),
|
|
OPT_UINTEGER('D', "delay", &initial_delay,
|
|
"ms to wait before starting measurement after program start"),
|
|
OPT_CALLBACK_NOOPT(0, "metric-only", &metric_only, NULL,
|
|
"Only print computed metrics. No raw values", enable_metric_only),
|
|
OPT_BOOLEAN(0, "topdown", &topdown_run,
|
|
"measure topdown level 1 statistics"),
|
|
OPT_BOOLEAN(0, "smi-cost", &smi_cost,
|
|
"measure SMI cost"),
|
|
OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",
|
|
"monitor specified metrics or metric groups (separated by ,)",
|
|
parse_metric_groups),
|
|
OPT_END()
|
|
};
|
|
|
|
static int perf_stat__get_socket(struct cpu_map *map, int cpu)
|
|
{
|
|
return cpu_map__get_socket(map, cpu, NULL);
|
|
}
|
|
|
|
static int perf_stat__get_core(struct cpu_map *map, int cpu)
|
|
{
|
|
return cpu_map__get_core(map, cpu, NULL);
|
|
}
|
|
|
|
static int cpu_map__get_max(struct cpu_map *map)
|
|
{
|
|
int i, max = -1;
|
|
|
|
for (i = 0; i < map->nr; i++) {
|
|
if (map->map[i] > max)
|
|
max = map->map[i];
|
|
}
|
|
|
|
return max;
|
|
}
|
|
|
|
static struct cpu_map *cpus_aggr_map;
|
|
|
|
static int perf_stat__get_aggr(aggr_get_id_t get_id, struct cpu_map *map, int idx)
|
|
{
|
|
int cpu;
|
|
|
|
if (idx >= map->nr)
|
|
return -1;
|
|
|
|
cpu = map->map[idx];
|
|
|
|
if (cpus_aggr_map->map[cpu] == -1)
|
|
cpus_aggr_map->map[cpu] = get_id(map, idx);
|
|
|
|
return cpus_aggr_map->map[cpu];
|
|
}
|
|
|
|
static int perf_stat__get_socket_cached(struct cpu_map *map, int idx)
|
|
{
|
|
return perf_stat__get_aggr(perf_stat__get_socket, map, idx);
|
|
}
|
|
|
|
static int perf_stat__get_core_cached(struct cpu_map *map, int idx)
|
|
{
|
|
return perf_stat__get_aggr(perf_stat__get_core, map, idx);
|
|
}
|
|
|
|
static int perf_stat_init_aggr_mode(void)
|
|
{
|
|
int nr;
|
|
|
|
switch (stat_config.aggr_mode) {
|
|
case AGGR_SOCKET:
|
|
if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
|
|
perror("cannot build socket map");
|
|
return -1;
|
|
}
|
|
aggr_get_id = perf_stat__get_socket_cached;
|
|
break;
|
|
case AGGR_CORE:
|
|
if (cpu_map__build_core_map(evsel_list->cpus, &aggr_map)) {
|
|
perror("cannot build core map");
|
|
return -1;
|
|
}
|
|
aggr_get_id = perf_stat__get_core_cached;
|
|
break;
|
|
case AGGR_NONE:
|
|
case AGGR_GLOBAL:
|
|
case AGGR_THREAD:
|
|
case AGGR_UNSET:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* The evsel_list->cpus is the base we operate on,
|
|
* taking the highest cpu number to be the size of
|
|
* the aggregation translate cpumap.
|
|
*/
|
|
nr = cpu_map__get_max(evsel_list->cpus);
|
|
cpus_aggr_map = cpu_map__empty_new(nr + 1);
|
|
return cpus_aggr_map ? 0 : -ENOMEM;
|
|
}
|
|
|
|
static void perf_stat__exit_aggr_mode(void)
|
|
{
|
|
cpu_map__put(aggr_map);
|
|
cpu_map__put(cpus_aggr_map);
|
|
aggr_map = NULL;
|
|
cpus_aggr_map = NULL;
|
|
}
|
|
|
|
static inline int perf_env__get_cpu(struct perf_env *env, struct cpu_map *map, int idx)
|
|
{
|
|
int cpu;
|
|
|
|
if (idx > map->nr)
|
|
return -1;
|
|
|
|
cpu = map->map[idx];
|
|
|
|
if (cpu >= env->nr_cpus_avail)
|
|
return -1;
|
|
|
|
return cpu;
|
|
}
|
|
|
|
static int perf_env__get_socket(struct cpu_map *map, int idx, void *data)
|
|
{
|
|
struct perf_env *env = data;
|
|
int cpu = perf_env__get_cpu(env, map, idx);
|
|
|
|
return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
|
|
}
|
|
|
|
static int perf_env__get_core(struct cpu_map *map, int idx, void *data)
|
|
{
|
|
struct perf_env *env = data;
|
|
int core = -1, cpu = perf_env__get_cpu(env, map, idx);
|
|
|
|
if (cpu != -1) {
|
|
int socket_id = env->cpu[cpu].socket_id;
|
|
|
|
/*
|
|
* Encode socket in upper 16 bits
|
|
* core_id is relative to socket, and
|
|
* we need a global id. So we combine
|
|
* socket + core id.
|
|
*/
|
|
core = (socket_id << 16) | (env->cpu[cpu].core_id & 0xffff);
|
|
}
|
|
|
|
return core;
|
|
}
|
|
|
|
static int perf_env__build_socket_map(struct perf_env *env, struct cpu_map *cpus,
|
|
struct cpu_map **sockp)
|
|
{
|
|
return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env);
|
|
}
|
|
|
|
static int perf_env__build_core_map(struct perf_env *env, struct cpu_map *cpus,
|
|
struct cpu_map **corep)
|
|
{
|
|
return cpu_map__build_map(cpus, corep, perf_env__get_core, env);
|
|
}
|
|
|
|
static int perf_stat__get_socket_file(struct cpu_map *map, int idx)
|
|
{
|
|
return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
|
|
}
|
|
|
|
static int perf_stat__get_core_file(struct cpu_map *map, int idx)
|
|
{
|
|
return perf_env__get_core(map, idx, &perf_stat.session->header.env);
|
|
}
|
|
|
|
static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
|
|
{
|
|
struct perf_env *env = &st->session->header.env;
|
|
|
|
switch (stat_config.aggr_mode) {
|
|
case AGGR_SOCKET:
|
|
if (perf_env__build_socket_map(env, evsel_list->cpus, &aggr_map)) {
|
|
perror("cannot build socket map");
|
|
return -1;
|
|
}
|
|
aggr_get_id = perf_stat__get_socket_file;
|
|
break;
|
|
case AGGR_CORE:
|
|
if (perf_env__build_core_map(env, evsel_list->cpus, &aggr_map)) {
|
|
perror("cannot build core map");
|
|
return -1;
|
|
}
|
|
aggr_get_id = perf_stat__get_core_file;
|
|
break;
|
|
case AGGR_NONE:
|
|
case AGGR_GLOBAL:
|
|
case AGGR_THREAD:
|
|
case AGGR_UNSET:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int topdown_filter_events(const char **attr, char **str, bool use_group)
|
|
{
|
|
int off = 0;
|
|
int i;
|
|
int len = 0;
|
|
char *s;
|
|
|
|
for (i = 0; attr[i]; i++) {
|
|
if (pmu_have_event("cpu", attr[i])) {
|
|
len += strlen(attr[i]) + 1;
|
|
attr[i - off] = attr[i];
|
|
} else
|
|
off++;
|
|
}
|
|
attr[i - off] = NULL;
|
|
|
|
*str = malloc(len + 1 + 2);
|
|
if (!*str)
|
|
return -1;
|
|
s = *str;
|
|
if (i - off == 0) {
|
|
*s = 0;
|
|
return 0;
|
|
}
|
|
if (use_group)
|
|
*s++ = '{';
|
|
for (i = 0; attr[i]; i++) {
|
|
strcpy(s, attr[i]);
|
|
s += strlen(s);
|
|
*s++ = ',';
|
|
}
|
|
if (use_group) {
|
|
s[-1] = '}';
|
|
*s = 0;
|
|
} else
|
|
s[-1] = 0;
|
|
return 0;
|
|
}
|
|
|
|
__weak bool arch_topdown_check_group(bool *warn)
|
|
{
|
|
*warn = false;
|
|
return false;
|
|
}
|
|
|
|
__weak void arch_topdown_group_warn(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Add default attributes, if there were no attributes specified or
|
|
* if -d/--detailed, -d -d or -d -d -d is used:
|
|
*/
|
|
static int add_default_attributes(void)
|
|
{
|
|
int err;
|
|
struct perf_event_attr default_attrs0[] = {
|
|
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
|
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
|
|
};
|
|
struct perf_event_attr frontend_attrs[] = {
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
|
|
};
|
|
struct perf_event_attr backend_attrs[] = {
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
|
|
};
|
|
struct perf_event_attr default_attrs1[] = {
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
|
|
|
|
};
|
|
|
|
/*
|
|
* Detailed stats (-d), covering the L1 and last level data caches:
|
|
*/
|
|
struct perf_event_attr detailed_attrs[] = {
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_LL << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_LL << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
};
|
|
|
|
/*
|
|
* Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
|
|
*/
|
|
struct perf_event_attr very_detailed_attrs[] = {
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_L1I << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_L1I << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_DTLB << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_DTLB << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_ITLB << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_ITLB << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
|
|
};
|
|
|
|
/*
|
|
* Very, very detailed stats (-d -d -d), adding prefetch events:
|
|
*/
|
|
struct perf_event_attr very_very_detailed_attrs[] = {
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
|
|
|
|
{ .type = PERF_TYPE_HW_CACHE,
|
|
.config =
|
|
PERF_COUNT_HW_CACHE_L1D << 0 |
|
|
(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
|
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
|
|
};
|
|
|
|
/* Set attrs if no event is selected and !null_run: */
|
|
if (null_run)
|
|
return 0;
|
|
|
|
if (transaction_run) {
|
|
struct parse_events_error errinfo;
|
|
|
|
if (pmu_have_event("cpu", "cycles-ct") &&
|
|
pmu_have_event("cpu", "el-start"))
|
|
err = parse_events(evsel_list, transaction_attrs,
|
|
&errinfo);
|
|
else
|
|
err = parse_events(evsel_list,
|
|
transaction_limited_attrs,
|
|
&errinfo);
|
|
if (err) {
|
|
fprintf(stderr, "Cannot set up transaction events\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (smi_cost) {
|
|
int smi;
|
|
|
|
if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
|
|
fprintf(stderr, "freeze_on_smi is not supported.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!smi) {
|
|
if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) {
|
|
fprintf(stderr, "Failed to set freeze_on_smi.\n");
|
|
return -1;
|
|
}
|
|
smi_reset = true;
|
|
}
|
|
|
|
if (pmu_have_event("msr", "aperf") &&
|
|
pmu_have_event("msr", "smi")) {
|
|
if (!force_metric_only)
|
|
metric_only = true;
|
|
err = parse_events(evsel_list, smi_cost_attrs, NULL);
|
|
} else {
|
|
fprintf(stderr, "To measure SMI cost, it needs "
|
|
"msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
|
|
return -1;
|
|
}
|
|
if (err) {
|
|
fprintf(stderr, "Cannot set up SMI cost events\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (topdown_run) {
|
|
char *str = NULL;
|
|
bool warn = false;
|
|
|
|
if (stat_config.aggr_mode != AGGR_GLOBAL &&
|
|
stat_config.aggr_mode != AGGR_CORE) {
|
|
pr_err("top down event configuration requires --per-core mode\n");
|
|
return -1;
|
|
}
|
|
stat_config.aggr_mode = AGGR_CORE;
|
|
if (nr_cgroups || !target__has_cpu(&target)) {
|
|
pr_err("top down event configuration requires system-wide mode (-a)\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!force_metric_only)
|
|
metric_only = true;
|
|
if (topdown_filter_events(topdown_attrs, &str,
|
|
arch_topdown_check_group(&warn)) < 0) {
|
|
pr_err("Out of memory\n");
|
|
return -1;
|
|
}
|
|
if (topdown_attrs[0] && str) {
|
|
if (warn)
|
|
arch_topdown_group_warn();
|
|
err = parse_events(evsel_list, str, NULL);
|
|
if (err) {
|
|
fprintf(stderr,
|
|
"Cannot set up top down events %s: %d\n",
|
|
str, err);
|
|
free(str);
|
|
return -1;
|
|
}
|
|
} else {
|
|
fprintf(stderr, "System does not support topdown\n");
|
|
return -1;
|
|
}
|
|
free(str);
|
|
}
|
|
|
|
if (!evsel_list->nr_entries) {
|
|
if (target__has_cpu(&target))
|
|
default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
|
|
|
|
if (perf_evlist__add_default_attrs(evsel_list, default_attrs0) < 0)
|
|
return -1;
|
|
if (pmu_have_event("cpu", "stalled-cycles-frontend")) {
|
|
if (perf_evlist__add_default_attrs(evsel_list,
|
|
frontend_attrs) < 0)
|
|
return -1;
|
|
}
|
|
if (pmu_have_event("cpu", "stalled-cycles-backend")) {
|
|
if (perf_evlist__add_default_attrs(evsel_list,
|
|
backend_attrs) < 0)
|
|
return -1;
|
|
}
|
|
if (perf_evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
|
|
return -1;
|
|
}
|
|
|
|
/* Detailed events get appended to the event list: */
|
|
|
|
if (detailed_run < 1)
|
|
return 0;
|
|
|
|
/* Append detailed run extra attributes: */
|
|
if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
|
|
return -1;
|
|
|
|
if (detailed_run < 2)
|
|
return 0;
|
|
|
|
/* Append very detailed run extra attributes: */
|
|
if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
|
|
return -1;
|
|
|
|
if (detailed_run < 3)
|
|
return 0;
|
|
|
|
/* Append very, very detailed run extra attributes: */
|
|
return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
|
|
}
|
|
|
|
static const char * const stat_record_usage[] = {
|
|
"perf stat record [<options>]",
|
|
NULL,
|
|
};
|
|
|
|
static void init_features(struct perf_session *session)
|
|
{
|
|
int feat;
|
|
|
|
for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++)
|
|
perf_header__set_feat(&session->header, feat);
|
|
|
|
perf_header__clear_feat(&session->header, HEADER_BUILD_ID);
|
|
perf_header__clear_feat(&session->header, HEADER_TRACING_DATA);
|
|
perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK);
|
|
perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
|
|
}
|
|
|
|
static int __cmd_record(int argc, const char **argv)
|
|
{
|
|
struct perf_session *session;
|
|
struct perf_data *data = &perf_stat.data;
|
|
|
|
argc = parse_options(argc, argv, stat_options, stat_record_usage,
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
|
|
if (output_name)
|
|
data->file.path = output_name;
|
|
|
|
if (run_count != 1 || forever) {
|
|
pr_err("Cannot use -r option with perf stat record.\n");
|
|
return -1;
|
|
}
|
|
|
|
session = perf_session__new(data, false, NULL);
|
|
if (session == NULL) {
|
|
pr_err("Perf session creation failed.\n");
|
|
return -1;
|
|
}
|
|
|
|
init_features(session);
|
|
|
|
session->evlist = evsel_list;
|
|
perf_stat.session = session;
|
|
perf_stat.record = true;
|
|
return argc;
|
|
}
|
|
|
|
static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
|
|
union perf_event *event,
|
|
struct perf_session *session)
|
|
{
|
|
struct stat_round_event *stat_round = &event->stat_round;
|
|
struct perf_evsel *counter;
|
|
struct timespec tsh, *ts = NULL;
|
|
const char **argv = session->header.env.cmdline_argv;
|
|
int argc = session->header.env.nr_cmdline;
|
|
|
|
evlist__for_each_entry(evsel_list, counter)
|
|
perf_stat_process_counter(&stat_config, counter);
|
|
|
|
if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL)
|
|
update_stats(&walltime_nsecs_stats, stat_round->time);
|
|
|
|
if (stat_config.interval && stat_round->time) {
|
|
tsh.tv_sec = stat_round->time / NSEC_PER_SEC;
|
|
tsh.tv_nsec = stat_round->time % NSEC_PER_SEC;
|
|
ts = &tsh;
|
|
}
|
|
|
|
print_counters(ts, argc, argv);
|
|
return 0;
|
|
}
|
|
|
|
static
|
|
int process_stat_config_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_session *session __maybe_unused)
|
|
{
|
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool);
|
|
|
|
perf_event__read_stat_config(&stat_config, &event->stat_config);
|
|
|
|
if (cpu_map__empty(st->cpus)) {
|
|
if (st->aggr_mode != AGGR_UNSET)
|
|
pr_warning("warning: processing task data, aggregation mode not set\n");
|
|
return 0;
|
|
}
|
|
|
|
if (st->aggr_mode != AGGR_UNSET)
|
|
stat_config.aggr_mode = st->aggr_mode;
|
|
|
|
if (perf_stat.data.is_pipe)
|
|
perf_stat_init_aggr_mode();
|
|
else
|
|
perf_stat_init_aggr_mode_file(st);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int set_maps(struct perf_stat *st)
|
|
{
|
|
if (!st->cpus || !st->threads)
|
|
return 0;
|
|
|
|
if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
|
|
return -EINVAL;
|
|
|
|
perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
|
|
|
|
if (perf_evlist__alloc_stats(evsel_list, true))
|
|
return -ENOMEM;
|
|
|
|
st->maps_allocated = true;
|
|
return 0;
|
|
}
|
|
|
|
static
|
|
int process_thread_map_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_session *session __maybe_unused)
|
|
{
|
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool);
|
|
|
|
if (st->threads) {
|
|
pr_warning("Extra thread map event, ignoring.\n");
|
|
return 0;
|
|
}
|
|
|
|
st->threads = thread_map__new_event(&event->thread_map);
|
|
if (!st->threads)
|
|
return -ENOMEM;
|
|
|
|
return set_maps(st);
|
|
}
|
|
|
|
static
|
|
int process_cpu_map_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_session *session __maybe_unused)
|
|
{
|
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool);
|
|
struct cpu_map *cpus;
|
|
|
|
if (st->cpus) {
|
|
pr_warning("Extra cpu map event, ignoring.\n");
|
|
return 0;
|
|
}
|
|
|
|
cpus = cpu_map__new_data(&event->cpu_map.data);
|
|
if (!cpus)
|
|
return -ENOMEM;
|
|
|
|
st->cpus = cpus;
|
|
return set_maps(st);
|
|
}
|
|
|
|
static int runtime_stat_new(struct perf_stat_config *config, int nthreads)
|
|
{
|
|
int i;
|
|
|
|
config->stats = calloc(nthreads, sizeof(struct runtime_stat));
|
|
if (!config->stats)
|
|
return -1;
|
|
|
|
config->stats_num = nthreads;
|
|
|
|
for (i = 0; i < nthreads; i++)
|
|
runtime_stat__init(&config->stats[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void runtime_stat_delete(struct perf_stat_config *config)
|
|
{
|
|
int i;
|
|
|
|
if (!config->stats)
|
|
return;
|
|
|
|
for (i = 0; i < config->stats_num; i++)
|
|
runtime_stat__exit(&config->stats[i]);
|
|
|
|
free(config->stats);
|
|
}
|
|
|
|
static const char * const stat_report_usage[] = {
|
|
"perf stat report [<options>]",
|
|
NULL,
|
|
};
|
|
|
|
static struct perf_stat perf_stat = {
|
|
.tool = {
|
|
.attr = perf_event__process_attr,
|
|
.event_update = perf_event__process_event_update,
|
|
.thread_map = process_thread_map_event,
|
|
.cpu_map = process_cpu_map_event,
|
|
.stat_config = process_stat_config_event,
|
|
.stat = perf_event__process_stat_event,
|
|
.stat_round = process_stat_round_event,
|
|
},
|
|
.aggr_mode = AGGR_UNSET,
|
|
};
|
|
|
|
static int __cmd_report(int argc, const char **argv)
|
|
{
|
|
struct perf_session *session;
|
|
const struct option options[] = {
|
|
OPT_STRING('i', "input", &input_name, "file", "input file name"),
|
|
OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
|
|
"aggregate counts per processor socket", AGGR_SOCKET),
|
|
OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
|
|
"aggregate counts per physical processor core", AGGR_CORE),
|
|
OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
|
|
"disable CPU count aggregation", AGGR_NONE),
|
|
OPT_END()
|
|
};
|
|
struct stat st;
|
|
int ret;
|
|
|
|
argc = parse_options(argc, argv, options, stat_report_usage, 0);
|
|
|
|
if (!input_name || !strlen(input_name)) {
|
|
if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
|
|
input_name = "-";
|
|
else
|
|
input_name = "perf.data";
|
|
}
|
|
|
|
perf_stat.data.file.path = input_name;
|
|
perf_stat.data.mode = PERF_DATA_MODE_READ;
|
|
|
|
session = perf_session__new(&perf_stat.data, false, &perf_stat.tool);
|
|
if (session == NULL)
|
|
return -1;
|
|
|
|
perf_stat.session = session;
|
|
stat_config.output = stderr;
|
|
evsel_list = session->evlist;
|
|
|
|
ret = perf_session__process_events(session);
|
|
if (ret)
|
|
return ret;
|
|
|
|
perf_session__delete(session);
|
|
return 0;
|
|
}
|
|
|
|
static void setup_system_wide(int forks)
|
|
{
|
|
/*
|
|
* Make system wide (-a) the default target if
|
|
* no target was specified and one of following
|
|
* conditions is met:
|
|
*
|
|
* - there's no workload specified
|
|
* - there is workload specified but all requested
|
|
* events are system wide events
|
|
*/
|
|
if (!target__none(&target))
|
|
return;
|
|
|
|
if (!forks)
|
|
target.system_wide = true;
|
|
else {
|
|
struct perf_evsel *counter;
|
|
|
|
evlist__for_each_entry(evsel_list, counter) {
|
|
if (!counter->system_wide)
|
|
return;
|
|
}
|
|
|
|
if (evsel_list->nr_entries)
|
|
target.system_wide = true;
|
|
}
|
|
}
|
|
|
|
int cmd_stat(int argc, const char **argv)
|
|
{
|
|
const char * const stat_usage[] = {
|
|
"perf stat [<options>] [<command>]",
|
|
NULL
|
|
};
|
|
int status = -EINVAL, run_idx;
|
|
const char *mode;
|
|
FILE *output = stderr;
|
|
unsigned int interval, timeout;
|
|
const char * const stat_subcommands[] = { "record", "report" };
|
|
|
|
setlocale(LC_ALL, "");
|
|
|
|
evsel_list = perf_evlist__new();
|
|
if (evsel_list == NULL)
|
|
return -ENOMEM;
|
|
|
|
parse_events__shrink_config_terms();
|
|
argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands,
|
|
(const char **) stat_usage,
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
perf_stat__collect_metric_expr(evsel_list);
|
|
perf_stat__init_shadow_stats();
|
|
|
|
if (csv_sep) {
|
|
csv_output = true;
|
|
if (!strcmp(csv_sep, "\\t"))
|
|
csv_sep = "\t";
|
|
} else
|
|
csv_sep = DEFAULT_SEPARATOR;
|
|
|
|
if (argc && !strncmp(argv[0], "rec", 3)) {
|
|
argc = __cmd_record(argc, argv);
|
|
if (argc < 0)
|
|
return -1;
|
|
} else if (argc && !strncmp(argv[0], "rep", 3))
|
|
return __cmd_report(argc, argv);
|
|
|
|
interval = stat_config.interval;
|
|
timeout = stat_config.timeout;
|
|
|
|
/*
|
|
* For record command the -o is already taken care of.
|
|
*/
|
|
if (!STAT_RECORD && output_name && strcmp(output_name, "-"))
|
|
output = NULL;
|
|
|
|
if (output_name && output_fd) {
|
|
fprintf(stderr, "cannot use both --output and --log-fd\n");
|
|
parse_options_usage(stat_usage, stat_options, "o", 1);
|
|
parse_options_usage(NULL, stat_options, "log-fd", 0);
|
|
goto out;
|
|
}
|
|
|
|
if (metric_only && stat_config.aggr_mode == AGGR_THREAD) {
|
|
fprintf(stderr, "--metric-only is not supported with --per-thread\n");
|
|
goto out;
|
|
}
|
|
|
|
if (metric_only && run_count > 1) {
|
|
fprintf(stderr, "--metric-only is not supported with -r\n");
|
|
goto out;
|
|
}
|
|
|
|
if (walltime_run_table && run_count <= 1) {
|
|
fprintf(stderr, "--table is only supported with -r\n");
|
|
parse_options_usage(stat_usage, stat_options, "r", 1);
|
|
parse_options_usage(NULL, stat_options, "table", 0);
|
|
goto out;
|
|
}
|
|
|
|
if (output_fd < 0) {
|
|
fprintf(stderr, "argument to --log-fd must be a > 0\n");
|
|
parse_options_usage(stat_usage, stat_options, "log-fd", 0);
|
|
goto out;
|
|
}
|
|
|
|
if (!output) {
|
|
struct timespec tm;
|
|
mode = append_file ? "a" : "w";
|
|
|
|
output = fopen(output_name, mode);
|
|
if (!output) {
|
|
perror("failed to create output file");
|
|
return -1;
|
|
}
|
|
clock_gettime(CLOCK_REALTIME, &tm);
|
|
fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
|
|
} else if (output_fd > 0) {
|
|
mode = append_file ? "a" : "w";
|
|
output = fdopen(output_fd, mode);
|
|
if (!output) {
|
|
perror("Failed opening logfd");
|
|
return -errno;
|
|
}
|
|
}
|
|
|
|
stat_config.output = output;
|
|
|
|
/*
|
|
* let the spreadsheet do the pretty-printing
|
|
*/
|
|
if (csv_output) {
|
|
/* User explicitly passed -B? */
|
|
if (big_num_opt == 1) {
|
|
fprintf(stderr, "-B option not supported with -x\n");
|
|
parse_options_usage(stat_usage, stat_options, "B", 1);
|
|
parse_options_usage(NULL, stat_options, "x", 1);
|
|
goto out;
|
|
} else /* Nope, so disable big number formatting */
|
|
big_num = false;
|
|
} else if (big_num_opt == 0) /* User passed --no-big-num */
|
|
big_num = false;
|
|
|
|
setup_system_wide(argc);
|
|
|
|
/*
|
|
* Display user/system times only for single
|
|
* run and when there's specified tracee.
|
|
*/
|
|
if ((run_count == 1) && target__none(&target))
|
|
ru_display = true;
|
|
|
|
if (run_count < 0) {
|
|
pr_err("Run count must be a positive number\n");
|
|
parse_options_usage(stat_usage, stat_options, "r", 1);
|
|
goto out;
|
|
} else if (run_count == 0) {
|
|
forever = true;
|
|
run_count = 1;
|
|
}
|
|
|
|
if (walltime_run_table) {
|
|
walltime_run = zalloc(run_count * sizeof(walltime_run[0]));
|
|
if (!walltime_run) {
|
|
pr_err("failed to setup -r option");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if ((stat_config.aggr_mode == AGGR_THREAD) &&
|
|
!target__has_task(&target)) {
|
|
if (!target.system_wide || target.cpu_list) {
|
|
fprintf(stderr, "The --per-thread option is only "
|
|
"available when monitoring via -p -t -a "
|
|
"options or only --per-thread.\n");
|
|
parse_options_usage(NULL, stat_options, "p", 1);
|
|
parse_options_usage(NULL, stat_options, "t", 1);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* no_aggr, cgroup are for system-wide only
|
|
* --per-thread is aggregated per thread, we dont mix it with cpu mode
|
|
*/
|
|
if (((stat_config.aggr_mode != AGGR_GLOBAL &&
|
|
stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) &&
|
|
!target__has_cpu(&target)) {
|
|
fprintf(stderr, "both cgroup and no-aggregation "
|
|
"modes only available in system-wide mode\n");
|
|
|
|
parse_options_usage(stat_usage, stat_options, "G", 1);
|
|
parse_options_usage(NULL, stat_options, "A", 1);
|
|
parse_options_usage(NULL, stat_options, "a", 1);
|
|
goto out;
|
|
}
|
|
|
|
if (add_default_attributes())
|
|
goto out;
|
|
|
|
target__validate(&target);
|
|
|
|
if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
|
|
target.per_thread = true;
|
|
|
|
if (perf_evlist__create_maps(evsel_list, &target) < 0) {
|
|
if (target__has_task(&target)) {
|
|
pr_err("Problems finding threads of monitor\n");
|
|
parse_options_usage(stat_usage, stat_options, "p", 1);
|
|
parse_options_usage(NULL, stat_options, "t", 1);
|
|
} else if (target__has_cpu(&target)) {
|
|
perror("failed to parse CPUs map");
|
|
parse_options_usage(stat_usage, stat_options, "C", 1);
|
|
parse_options_usage(NULL, stat_options, "a", 1);
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Initialize thread_map with comm names,
|
|
* so we could print it out on output.
|
|
*/
|
|
if (stat_config.aggr_mode == AGGR_THREAD) {
|
|
thread_map__read_comms(evsel_list->threads);
|
|
if (target.system_wide) {
|
|
if (runtime_stat_new(&stat_config,
|
|
thread_map__nr(evsel_list->threads))) {
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (stat_config.times && interval)
|
|
interval_count = true;
|
|
else if (stat_config.times && !interval) {
|
|
pr_err("interval-count option should be used together with "
|
|
"interval-print.\n");
|
|
parse_options_usage(stat_usage, stat_options, "interval-count", 0);
|
|
parse_options_usage(stat_usage, stat_options, "I", 1);
|
|
goto out;
|
|
}
|
|
|
|
if (timeout && timeout < 100) {
|
|
if (timeout < 10) {
|
|
pr_err("timeout must be >= 10ms.\n");
|
|
parse_options_usage(stat_usage, stat_options, "timeout", 0);
|
|
goto out;
|
|
} else
|
|
pr_warning("timeout < 100ms. "
|
|
"The overhead percentage could be high in some cases. "
|
|
"Please proceed with caution.\n");
|
|
}
|
|
if (timeout && interval) {
|
|
pr_err("timeout option is not supported with interval-print.\n");
|
|
parse_options_usage(stat_usage, stat_options, "timeout", 0);
|
|
parse_options_usage(stat_usage, stat_options, "I", 1);
|
|
goto out;
|
|
}
|
|
|
|
if (perf_evlist__alloc_stats(evsel_list, interval))
|
|
goto out;
|
|
|
|
if (perf_stat_init_aggr_mode())
|
|
goto out;
|
|
|
|
/*
|
|
* We dont want to block the signals - that would cause
|
|
* child tasks to inherit that and Ctrl-C would not work.
|
|
* What we want is for Ctrl-C to work in the exec()-ed
|
|
* task, but being ignored by perf stat itself:
|
|
*/
|
|
atexit(sig_atexit);
|
|
if (!forever)
|
|
signal(SIGINT, skip_signal);
|
|
signal(SIGCHLD, skip_signal);
|
|
signal(SIGALRM, skip_signal);
|
|
signal(SIGABRT, skip_signal);
|
|
|
|
status = 0;
|
|
for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
|
|
if (run_count != 1 && verbose > 0)
|
|
fprintf(output, "[ perf stat: executing run #%d ... ]\n",
|
|
run_idx + 1);
|
|
|
|
status = run_perf_stat(argc, argv, run_idx);
|
|
if (forever && status != -1) {
|
|
print_counters(NULL, argc, argv);
|
|
perf_stat__reset_stats();
|
|
}
|
|
}
|
|
|
|
if (!forever && status != -1 && !interval)
|
|
print_counters(NULL, argc, argv);
|
|
|
|
if (STAT_RECORD) {
|
|
/*
|
|
* We synthesize the kernel mmap record just so that older tools
|
|
* don't emit warnings about not being able to resolve symbols
|
|
* due to /proc/sys/kernel/kptr_restrict settings and instear provide
|
|
* a saner message about no samples being in the perf.data file.
|
|
*
|
|
* This also serves to suppress a warning about f_header.data.size == 0
|
|
* in header.c at the moment 'perf stat record' gets introduced, which
|
|
* is not really needed once we start adding the stat specific PERF_RECORD_
|
|
* records, but the need to suppress the kptr_restrict messages in older
|
|
* tools remain -acme
|
|
*/
|
|
int fd = perf_data__fd(&perf_stat.data);
|
|
int err = perf_event__synthesize_kernel_mmap((void *)&perf_stat,
|
|
process_synthesized_event,
|
|
&perf_stat.session->machines.host);
|
|
if (err) {
|
|
pr_warning("Couldn't synthesize the kernel mmap record, harmless, "
|
|
"older tools may produce warnings about this file\n.");
|
|
}
|
|
|
|
if (!interval) {
|
|
if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
|
|
pr_err("failed to write stat round event\n");
|
|
}
|
|
|
|
if (!perf_stat.data.is_pipe) {
|
|
perf_stat.session->header.data_size += perf_stat.bytes_written;
|
|
perf_session__write_header(perf_stat.session, evsel_list, fd, true);
|
|
}
|
|
|
|
perf_session__delete(perf_stat.session);
|
|
}
|
|
|
|
perf_stat__exit_aggr_mode();
|
|
perf_evlist__free_stats(evsel_list);
|
|
out:
|
|
free(walltime_run);
|
|
|
|
if (smi_cost && smi_reset)
|
|
sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
|
|
|
|
perf_evlist__delete(evsel_list);
|
|
|
|
runtime_stat_delete(&stat_config);
|
|
|
|
return status;
|
|
}
|