perf stat: Don't use globals where not needed to
Some variables were global but used in just one function, so move it to where it belongs. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-spa8e7nnohtn1z32q2l2ae2c@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
Родитель
73ee3b2768
Коммит
b070a547fd
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@ -64,122 +64,12 @@
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#define CNTR_NOT_SUPPORTED "<not supported>"
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#define CNTR_NOT_COUNTED "<not counted>"
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static struct perf_event_attr default_attrs[] = {
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
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};
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/*
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* Detailed stats (-d), covering the L1 and last level data caches:
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*/
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static struct perf_event_attr detailed_attrs[] = {
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_LL << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_LL << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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};
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/*
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* Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
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*/
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static struct perf_event_attr very_detailed_attrs[] = {
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1I << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1I << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_DTLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_DTLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_ITLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_ITLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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};
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/*
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* Very, very detailed stats (-d -d -d), adding prefetch events:
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*/
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static struct perf_event_attr very_very_detailed_attrs[] = {
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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};
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static struct perf_evlist *evsel_list;
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static struct perf_target target = {
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.uid = UINT_MAX,
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};
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static int run_idx = 0;
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static int run_count = 1;
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static bool no_inherit = false;
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static bool scale = true;
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@ -187,15 +77,12 @@ static bool no_aggr = false;
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static 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 sync_run = 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 *output_name = NULL;
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static FILE *output = NULL;
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static int output_fd;
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static volatile int done = 0;
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@ -1028,11 +915,6 @@ static void sig_atexit(void)
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kill(getpid(), signr);
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}
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static const char * const stat_usage[] = {
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"perf stat [<options>] [<command>]",
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NULL
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};
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static int stat__set_big_num(const struct option *opt __maybe_unused,
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const char *s __maybe_unused, int unset)
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{
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@ -1040,62 +922,119 @@ static int stat__set_big_num(const struct option *opt __maybe_unused,
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return 0;
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}
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static bool append_file;
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static const struct option options[] = {
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OPT_CALLBACK('e', "event", &evsel_list, "event",
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"event selector. use 'perf list' to list available events",
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parse_events_option),
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OPT_CALLBACK(0, "filter", &evsel_list, "filter",
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"event filter", parse_filter),
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OPT_BOOLEAN('i', "no-inherit", &no_inherit,
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"child tasks do not inherit counters"),
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OPT_STRING('p', "pid", &target.pid, "pid",
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"stat events on existing process id"),
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OPT_STRING('t', "tid", &target.tid, "tid",
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"stat events on existing thread id"),
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OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
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"system-wide collection from all CPUs"),
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OPT_BOOLEAN('g', "group", &group,
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"put the counters into a counter group"),
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OPT_BOOLEAN('c', "scale", &scale,
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"scale/normalize counters"),
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OPT_INCR('v', "verbose", &verbose,
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"be more verbose (show counter open errors, etc)"),
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OPT_INTEGER('r', "repeat", &run_count,
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"repeat command and print average + stddev (max: 100)"),
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OPT_BOOLEAN('n', "null", &null_run,
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"null run - dont start any counters"),
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OPT_INCR('d', "detailed", &detailed_run,
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"detailed run - start a lot of events"),
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OPT_BOOLEAN('S', "sync", &sync_run,
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"call sync() before starting a run"),
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OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
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"print large numbers with thousands\' separators",
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stat__set_big_num),
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OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
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"list of cpus to monitor in system-wide"),
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OPT_BOOLEAN('A', "no-aggr", &no_aggr,
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"disable CPU count aggregation"),
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OPT_STRING('x', "field-separator", &csv_sep, "separator",
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"print counts with custom separator"),
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OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
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"monitor event in cgroup name only",
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parse_cgroups),
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OPT_STRING('o', "output", &output_name, "file",
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"output file name"),
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OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
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OPT_INTEGER(0, "log-fd", &output_fd,
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"log output to fd, instead of stderr"),
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OPT_END()
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};
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/*
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* Add default attributes, if there were no attributes specified or
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* if -d/--detailed, -d -d or -d -d -d is used:
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*/
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static int add_default_attributes(void)
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{
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struct perf_event_attr default_attrs[] = {
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
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{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
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{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
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};
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/*
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* Detailed stats (-d), covering the L1 and last level data caches:
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*/
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struct perf_event_attr detailed_attrs[] = {
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_LL << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_LL << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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};
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/*
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* Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
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*/
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struct perf_event_attr very_detailed_attrs[] = {
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1I << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1I << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_DTLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_DTLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_ITLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_ITLB << 0 |
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(PERF_COUNT_HW_CACHE_OP_READ << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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};
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/*
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* Very, very detailed stats (-d -d -d), adding prefetch events:
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*/
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struct perf_event_attr very_very_detailed_attrs[] = {
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
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{ .type = PERF_TYPE_HW_CACHE,
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.config =
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PERF_COUNT_HW_CACHE_L1D << 0 |
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(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
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(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
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};
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/* Set attrs if no event is selected and !null_run: */
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if (null_run)
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return 0;
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@ -1130,8 +1069,59 @@ static int add_default_attributes(void)
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int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
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{
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bool append_file = false,
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sync_run = false;
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int output_fd = 0;
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const char *output_name = NULL;
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const struct option options[] = {
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OPT_CALLBACK('e', "event", &evsel_list, "event",
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"event selector. use 'perf list' to list available events",
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parse_events_option),
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OPT_CALLBACK(0, "filter", &evsel_list, "filter",
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"event filter", parse_filter),
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OPT_BOOLEAN('i', "no-inherit", &no_inherit,
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"child tasks do not inherit counters"),
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OPT_STRING('p', "pid", &target.pid, "pid",
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"stat events on existing process id"),
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OPT_STRING('t', "tid", &target.tid, "tid",
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"stat events on existing thread id"),
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OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
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"system-wide collection from all CPUs"),
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OPT_BOOLEAN('g', "group", &group,
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"put the counters into a counter group"),
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OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
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OPT_INCR('v', "verbose", &verbose,
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"be more verbose (show counter open errors, etc)"),
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OPT_INTEGER('r', "repeat", &run_count,
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"repeat command and print average + stddev (max: 100)"),
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OPT_BOOLEAN('n', "null", &null_run,
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"null run - dont start any counters"),
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OPT_INCR('d', "detailed", &detailed_run,
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"detailed run - start a lot of events"),
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OPT_BOOLEAN('S', "sync", &sync_run,
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"call sync() before starting a run"),
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OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
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"print large numbers with thousands\' separators",
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stat__set_big_num),
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OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
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"list of cpus to monitor in system-wide"),
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OPT_BOOLEAN('A', "no-aggr", &no_aggr, "disable CPU count aggregation"),
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OPT_STRING('x', "field-separator", &csv_sep, "separator",
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"print counts with custom separator"),
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OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
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"monitor event in cgroup name only", parse_cgroups),
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OPT_STRING('o', "output", &output_name, "file", "output file name"),
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OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
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OPT_INTEGER(0, "log-fd", &output_fd,
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"log output to fd, instead of stderr"),
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OPT_END()
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};
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const char * const stat_usage[] = {
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"perf stat [<options>] [<command>]",
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NULL
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};
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struct perf_evsel *pos;
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int status = -ENOMEM;
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int status = -ENOMEM, run_idx;
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const char *mode;
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setlocale(LC_ALL, "");
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