diff options
Diffstat (limited to 'tools/perf/bench/uprobe.c')
-rw-r--r-- | tools/perf/bench/uprobe.c | 75 |
1 files changed, 72 insertions, 3 deletions
diff --git a/tools/perf/bench/uprobe.c b/tools/perf/bench/uprobe.c index a90e09f791c5..dfb90038a4f7 100644 --- a/tools/perf/bench/uprobe.c +++ b/tools/perf/bench/uprobe.c @@ -24,6 +24,11 @@ #define LOOPS_DEFAULT 1000 static int loops = LOOPS_DEFAULT; +enum bench_uprobe { + BENCH_UPROBE__BASELINE, + BENCH_UPROBE__EMPTY, +}; + static const struct option options[] = { OPT_INTEGER('l', "loop", &loops, "Specify number of loops"), OPT_END() @@ -34,6 +39,59 @@ static const char * const bench_uprobe_usage[] = { NULL }; +#ifdef HAVE_BPF_SKEL +#include "bpf_skel/bench_uprobe.skel.h" + +struct bench_uprobe_bpf *skel; + +static int bench_uprobe__setup_bpf_skel(void) +{ + DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, uprobe_opts); + int err; + + /* Load and verify BPF application */ + skel = bench_uprobe_bpf__open(); + if (!skel) { + fprintf(stderr, "Failed to open and load uprobes bench BPF skeleton\n"); + return -1; + } + + err = bench_uprobe_bpf__load(skel); + if (err) { + fprintf(stderr, "Failed to load and verify BPF skeleton\n"); + goto cleanup; + } + + uprobe_opts.func_name = "usleep"; + skel->links.empty = bpf_program__attach_uprobe_opts(/*prog=*/skel->progs.empty, + /*pid=*/-1, + /*binary_path=*/"/lib64/libc.so.6", + /*func_offset=*/0, + /*opts=*/&uprobe_opts); + if (!skel->links.empty) { + err = -errno; + fprintf(stderr, "Failed to attach bench uprobe: %s\n", strerror(errno)); + goto cleanup; + } + + return err; +cleanup: + bench_uprobe_bpf__destroy(skel); + return err; +} + +static void bench_uprobe__teardown_bpf_skel(void) +{ + if (skel) { + bench_uprobe_bpf__destroy(skel); + skel = NULL; + } +} +#else +static int bench_uprobe__setup_bpf_skel(void) { return 0; } +static void bench_uprobe__teardown_bpf_skel(void) {}; +#endif + static int bench_uprobe_format__default_fprintf(const char *name, const char *unit, u64 diff, FILE *fp) { static u64 baseline, previous; @@ -68,7 +126,7 @@ static int bench_uprobe_format__default_fprintf(const char *name, const char *un return printed + 1; } -static int bench_uprobe(int argc, const char **argv) +static int bench_uprobe(int argc, const char **argv, enum bench_uprobe bench) { const char *name = "usleep(1000)", *unit = "usec"; struct timespec start, end; @@ -77,7 +135,10 @@ static int bench_uprobe(int argc, const char **argv) argc = parse_options(argc, argv, options, bench_uprobe_usage, 0); - clock_gettime(CLOCK_REALTIME, &start); + if (bench != BENCH_UPROBE__BASELINE && bench_uprobe__setup_bpf_skel() < 0) + return 0; + + clock_gettime(CLOCK_REALTIME, &start); for (i = 0; i < loops; i++) { usleep(USEC_PER_MSEC); @@ -103,10 +164,18 @@ static int bench_uprobe(int argc, const char **argv) exit(1); } + if (bench != BENCH_UPROBE__BASELINE) + bench_uprobe__teardown_bpf_skel(); + return 0; } int bench_uprobe_baseline(int argc, const char **argv) { - return bench_uprobe(argc, argv); + return bench_uprobe(argc, argv, BENCH_UPROBE__BASELINE); +} + +int bench_uprobe_empty(int argc, const char **argv) +{ + return bench_uprobe(argc, argv, BENCH_UPROBE__EMPTY); } |