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Date: Thu, 6 Oct 2022 15:42:10 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>
Cc: linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/3] perf bench syscall: Add execve syscall benchmark
This commit adds the execve syscall benchmark, more syscall
benchmarks can be added in the future.
Here are the test results:
[loongson@...ux perf]$ ./perf bench syscall
# List of available benchmarks for collection 'syscall':
basic: Benchmark for basic getppid(2) calls
close: Benchmark for close(2) calls
execve: Benchmark for execve(2) calls
all: Run all syscall benchmarks
[loongson@...ux perf]$ ./perf bench syscall execve
# Running 'syscall/execve' benchmark:
# Executed 10000 execve() calls
Total time: 4.827 [sec]
482.761800 usecs/op
2071 ops/sec
[loongson@...ux perf]$ ./perf bench syscall all
# Running syscall/basic benchmark...
# Executed 10000000 getppid() calls
Total time: 1.956 [sec]
0.195692 usecs/op
5110065 ops/sec
# Running syscall/close benchmark...
# Executed 10000000 close() calls
Total time: 6.306 [sec]
0.630692 usecs/op
1585558 ops/sec
# Running syscall/execve benchmark...
# Executed 10000 execve() calls
Total time: 4.842 [sec]
484.299500 usecs/op
2064 ops/sec
Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
tools/arch/x86/include/uapi/asm/unistd_32.h | 3 +++
tools/arch/x86/include/uapi/asm/unistd_64.h | 3 +++
tools/perf/bench/bench.h | 1 +
tools/perf/bench/syscall.c | 36 +++++++++++++++++++++++++++++
tools/perf/builtin-bench.c | 1 +
5 files changed, 44 insertions(+)
diff --git a/tools/arch/x86/include/uapi/asm/unistd_32.h b/tools/arch/x86/include/uapi/asm/unistd_32.h
index 2f24b0eb..0c65a2c 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_32.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_32.h
@@ -5,6 +5,9 @@
#ifndef __NR_close
# define __NR_close 6
#endif
+#ifndef __NR_execve
+# define __NR_execve 11
+#endif
#ifndef __NR_futex
# define __NR_futex 240
#endif
diff --git a/tools/arch/x86/include/uapi/asm/unistd_64.h b/tools/arch/x86/include/uapi/asm/unistd_64.h
index 8eb32b2..7427910 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_64.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_64.h
@@ -5,6 +5,9 @@
#ifndef __NR_close
# define __NR_close 3
#endif
+#ifndef __NR_execve
+# define __NR_execve 59
+#endif
#ifndef __NR_futex
# define __NR_futex 202
#endif
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
index 916cd47..6ca3327 100644
--- a/tools/perf/bench/bench.h
+++ b/tools/perf/bench/bench.h
@@ -35,6 +35,7 @@ int bench_sched_messaging(int argc, const char **argv);
int bench_sched_pipe(int argc, const char **argv);
int bench_syscall_basic(int argc, const char **argv);
int bench_syscall_close(int argc, const char **argv);
+int bench_syscall_execve(int argc, const char **argv);
int bench_mem_memcpy(int argc, const char **argv);
int bench_mem_memset(int argc, const char **argv);
int bench_mem_find_bit(int argc, const char **argv);
diff --git a/tools/perf/bench/syscall.c b/tools/perf/bench/syscall.c
index 058394b..c8f8bee 100644
--- a/tools/perf/bench/syscall.c
+++ b/tools/perf/bench/syscall.c
@@ -14,6 +14,7 @@
#include <sys/time.h>
#include <sys/syscall.h>
#include <sys/types.h>
+#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
@@ -30,6 +31,27 @@ static const char * const bench_syscall_usage[] = {
NULL
};
+static void test_execve(void)
+{
+ const char *pathname = "/bin/true";
+ char *const argv[] = { (char *)pathname, NULL };
+ pid_t pid = fork();
+
+ if (pid < 0) {
+ fprintf(stderr, "fork failed\n");
+ exit(1);
+ } else if (pid == 0) {
+ execve(pathname, argv, NULL);
+ fprintf(stderr, "execve /bin/true failed\n");
+ exit(1);
+ } else {
+ if (waitpid(pid, NULL, 0) < 0) {
+ fprintf(stderr, "waitpid failed\n");
+ exit(1);
+ }
+ }
+}
+
static int bench_syscall_common(int argc, const char **argv, int syscall)
{
struct timeval start, stop, diff;
@@ -49,6 +71,12 @@ static int bench_syscall_common(int argc, const char **argv, int syscall)
case __NR_close:
close(dup(0));
break;
+ case __NR_execve:
+ test_execve();
+ /* Only loop 10000 times to save time */
+ if (i == 10000)
+ loops = 10000;
+ break;
default:
break;
}
@@ -64,6 +92,9 @@ static int bench_syscall_common(int argc, const char **argv, int syscall)
case __NR_close:
name = "close()";
break;
+ case __NR_execve:
+ name = "execve()";
+ break;
default:
break;
}
@@ -111,3 +142,8 @@ int bench_syscall_close(int argc, const char **argv)
{
return bench_syscall_common(argc, argv, __NR_close);
}
+
+int bench_syscall_execve(int argc, const char **argv)
+{
+ return bench_syscall_common(argc, argv, __NR_execve);
+}
diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index b63c711..6f9ff75 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -53,6 +53,7 @@ static struct bench sched_benchmarks[] = {
static struct bench syscall_benchmarks[] = {
{ "basic", "Benchmark for basic getppid(2) calls", bench_syscall_basic },
{ "close", "Benchmark for close(2) calls", bench_syscall_close },
+ { "execve", "Benchmark for execve(2) calls", bench_syscall_execve },
{ "all", "Run all syscall benchmarks", NULL },
{ NULL, NULL, NULL },
};
--
2.1.0
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