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perf bench uprobe: Add uretprobe variant of uprobe benchmarks

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Name benchmarks with _ret at the end to avoid creating a new set of
benchmarks.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrei Vagin <avagin@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240406040911.1603801-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2024-04-05 21:09:11 -07:00 committed by Arnaldo Carvalho de Melo
parent 459fee7b50
commit 988052f4bf
4 changed files with 37 additions and 3 deletions
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2
tools/perf/bench/bench.h
View File

@ -46,6 +46,8 @@ int bench_breakpoint_enable(int argc, const char **argv);
int bench_uprobe_baseline(int argc, const char **argv);
int bench_uprobe_empty(int argc, const char **argv);
int bench_uprobe_trace_printk(int argc, const char **argv);
int bench_uprobe_empty_ret(int argc, const char **argv);
int bench_uprobe_trace_printk_ret(int argc, const char **argv);
int bench_pmu_scan(int argc, const char **argv);
#define BENCH_FORMAT_DEFAULT_STR "default"

20
tools/perf/bench/uprobe.c
View File

@ -26,9 +26,11 @@
static int loops = LOOPS_DEFAULT;
enum bench_uprobe {
BENCH_UPROBE__BASELINE,
BENCH_UPROBE__EMPTY,
BENCH_UPROBE__TRACE_PRINTK,
BENCH_UPROBE__BASELINE,
BENCH_UPROBE__EMPTY,
BENCH_UPROBE__TRACE_PRINTK,
BENCH_UPROBE__EMPTY_RET,
BENCH_UPROBE__TRACE_PRINTK_RET,
};
static const struct option options[] = {
@ -81,6 +83,8 @@ static int bench_uprobe__setup_bpf_skel(enum bench_uprobe bench)
case BENCH_UPROBE__BASELINE: break;
case BENCH_UPROBE__EMPTY: bench_uprobe__attach_uprobe(empty); break;
case BENCH_UPROBE__TRACE_PRINTK: bench_uprobe__attach_uprobe(trace_printk); break;
case BENCH_UPROBE__EMPTY_RET: bench_uprobe__attach_uprobe(empty_ret); break;
case BENCH_UPROBE__TRACE_PRINTK_RET: bench_uprobe__attach_uprobe(trace_printk_ret); break;
default:
fprintf(stderr, "Invalid bench: %d\n", bench);
goto cleanup;
@ -197,3 +201,13 @@ int bench_uprobe_trace_printk(int argc, const char **argv)
{
return bench_uprobe(argc, argv, BENCH_UPROBE__TRACE_PRINTK);
}
int bench_uprobe_empty_ret(int argc, const char **argv)
{
return bench_uprobe(argc, argv, BENCH_UPROBE__EMPTY_RET);
}
int bench_uprobe_trace_printk_ret(int argc, const char **argv)
{
return bench_uprobe(argc, argv, BENCH_UPROBE__TRACE_PRINTK_RET);
}

2
tools/perf/builtin-bench.c
View File

@ -109,6 +109,8 @@ static struct bench uprobe_benchmarks[] = {
{ "baseline", "Baseline libc usleep(1000) call", bench_uprobe_baseline, },
{ "empty", "Attach empty BPF prog to uprobe on usleep, system wide", bench_uprobe_empty, },
{ "trace_printk", "Attach trace_printk BPF prog to uprobe on usleep syswide", bench_uprobe_trace_printk, },
{ "empty_ret", "Attach empty BPF prog to uretprobe on usleep, system wide", bench_uprobe_empty_ret, },
{ "trace_printk_ret", "Attach trace_printk BPF prog to uretprobe on usleep syswide", bench_uprobe_trace_printk_ret,},
{ NULL, NULL, NULL },
};

16
tools/perf/util/bpf_skel/bench_uprobe.bpf.c
View File

@ -4,6 +4,7 @@
#include <bpf/bpf_tracing.h>
unsigned int nr_uprobes;
unsigned int nr_uretprobes;
SEC("uprobe")
int BPF_UPROBE(empty)
@ -20,4 +21,19 @@ int BPF_UPROBE(trace_printk)
return 0;
}
SEC("uretprobe")
int BPF_URETPROBE(empty_ret)
{
return 0;
}
SEC("uretprobe")
int BPF_URETPROBE(trace_printk_ret)
{
char fmt[] = "perf bench uretprobe %u";
bpf_trace_printk(fmt, sizeof(fmt), ++nr_uretprobes);
return 0;
}
char LICENSE[] SEC("license") = "Dual BSD/GPL";