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The pmu-scan benchmark will repeatedly scan the sysfs to get the
available PMU information.
$ ./perf bench internals pmu-scan
# Running 'internals/pmu-scan' benchmark:
Computing performance of sysfs PMU event scan for 100 times
Average PMU scanning took: 6850.990 usec (+- 48.445 usec)
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230331202949.810326-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BENCH_H
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#define BENCH_H
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#include <sys/time.h>
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extern struct timeval bench__start, bench__end, bench__runtime;
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/*
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* The madvise transparent hugepage constants were added in glibc
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* 2.13. For compatibility with older versions of glibc, define these
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* tokens if they are not already defined.
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*/
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# ifndef MADV_HUGEPAGE
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# define MADV_HUGEPAGE 14
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# endif
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# ifndef MADV_NOHUGEPAGE
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# define MADV_NOHUGEPAGE 15
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# endif
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int bench_numa(int argc, const char **argv);
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int bench_sched_messaging(int argc, const char **argv);
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int bench_sched_pipe(int argc, const char **argv);
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int bench_syscall_basic(int argc, const char **argv);
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int bench_syscall_getpgid(int argc, const char **argv);
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int bench_syscall_fork(int argc, const char **argv);
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int bench_syscall_execve(int argc, const char **argv);
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int bench_mem_memcpy(int argc, const char **argv);
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int bench_mem_memset(int argc, const char **argv);
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int bench_mem_find_bit(int argc, const char **argv);
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int bench_futex_hash(int argc, const char **argv);
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int bench_futex_wake(int argc, const char **argv);
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int bench_futex_wake_parallel(int argc, const char **argv);
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int bench_futex_requeue(int argc, const char **argv);
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/* pi futexes */
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int bench_futex_lock_pi(int argc, const char **argv);
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int bench_epoll_wait(int argc, const char **argv);
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int bench_epoll_ctl(int argc, const char **argv);
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int bench_synthesize(int argc, const char **argv);
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int bench_kallsyms_parse(int argc, const char **argv);
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int bench_inject_build_id(int argc, const char **argv);
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int bench_evlist_open_close(int argc, const char **argv);
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int bench_breakpoint_thread(int argc, const char **argv);
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int bench_breakpoint_enable(int argc, const char **argv);
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int bench_pmu_scan(int argc, const char **argv);
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#define BENCH_FORMAT_DEFAULT_STR "default"
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#define BENCH_FORMAT_DEFAULT 0
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#define BENCH_FORMAT_SIMPLE_STR "simple"
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#define BENCH_FORMAT_SIMPLE 1
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#define BENCH_FORMAT_UNKNOWN -1
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extern int bench_format;
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extern unsigned int bench_repeat;
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#ifndef HAVE_PTHREAD_ATTR_SETAFFINITY_NP
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#include <pthread.h>
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#include <linux/compiler.h>
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static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr __maybe_unused,
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size_t cpusetsize __maybe_unused,
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cpu_set_t *cpuset __maybe_unused)
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{
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return 0;
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}
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#endif
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#endif
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