[PATCH v5 0/4] perf: Add more syscalls to benchmark

[PATCH v5 0/4] perf: Add more syscalls to benchmark

[Tiezhu Yang]

Tested on x86_64, arm64, mips64 and loongarch64.

Tiezhu Yang (4):
  tools x86: Keep list sorted by number in unistd_{32,64}.h
  perf bench syscall: Introduce bench_syscall_common()
  perf bench syscall: Add getpgid syscall benchmark
  perf bench syscall: Add execve syscall benchmark

 tools/arch/x86/include/uapi/asm/unistd_32.h | 23 ++++++---
 tools/arch/x86/include/uapi/asm/unistd_64.h | 23 ++++++---
 tools/perf/bench/bench.h                    |  2 +
 tools/perf/bench/syscall.c                  | 76 +++++++++++++++++++++++++++--
 tools/perf/builtin-bench.c                  |  2 +
 5 files changed, 108 insertions(+), 18 deletions(-)

-- 
2.1.0

[PATCH v5 1/4] tools x86: Keep list sorted by number in unistd_{32,64}.h

[Tiezhu Yang]

It is better to keep list sorted by number in unistd_{32,64}.h,
so that we can add more syscall number to a proper position.

This is preparation for later patch, no functionality change.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
 tools/arch/x86/include/uapi/asm/unistd_32.h | 16 ++++++++--------
 tools/arch/x86/include/uapi/asm/unistd_64.h | 16 ++++++++--------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/tools/arch/x86/include/uapi/asm/unistd_32.h b/tools/arch/x86/include/uapi/asm/unistd_32.h
index 60a89db..e1cc62d 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_32.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_32.h
@@ -1,16 +1,16 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __NR_perf_event_open
-# define __NR_perf_event_open 336
+#ifndef __NR_gettid
+#define __NR_gettid 224
 #endif
 #ifndef __NR_futex
-# define __NR_futex 240
-#endif
-#ifndef __NR_gettid
-# define __NR_gettid 224
+#define __NR_futex 240
 #endif
 #ifndef __NR_getcpu
-# define __NR_getcpu 318
+#define __NR_getcpu 318
+#endif
+#ifndef __NR_perf_event_open
+#define __NR_perf_event_open 336
 #endif
 #ifndef __NR_setns
-# define __NR_setns 346
+#define __NR_setns 346
 #endif
diff --git a/tools/arch/x86/include/uapi/asm/unistd_64.h b/tools/arch/x86/include/uapi/asm/unistd_64.h
index cb52a3a..ce8b7ab 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_64.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_64.h
@@ -1,16 +1,16 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __NR_perf_event_open
-# define __NR_perf_event_open 298
+#ifndef __NR_gettid
+#define __NR_gettid 186
 #endif
 #ifndef __NR_futex
-# define __NR_futex 202
-#endif
-#ifndef __NR_gettid
-# define __NR_gettid 186
+#define __NR_futex 202
 #endif
-#ifndef __NR_getcpu
-# define __NR_getcpu 309
+#ifndef __NR_perf_event_open
+#define __NR_perf_event_open 298
 #endif
 #ifndef __NR_setns
 #define __NR_setns 308
 #endif
+#ifndef __NR_getcpu
+#define __NR_getcpu 309
+#endif
-- 
2.1.0

[PATCH v5 2/4] perf bench syscall: Introduce bench_syscall_common()

[Tiezhu Yang]

In the current code, there is only a basic syscall benchmark via
getppid, this is not enough. Introduce bench_syscall_common() so
that we can add more syscalls to benchmark.

This is preparation for later patch, no functionality change.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
 tools/arch/x86/include/uapi/asm/unistd_32.h |  3 +++
 tools/arch/x86/include/uapi/asm/unistd_64.h |  3 +++
 tools/perf/bench/syscall.c                  | 29 +++++++++++++++++++++++++----
 3 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/tools/arch/x86/include/uapi/asm/unistd_32.h b/tools/arch/x86/include/uapi/asm/unistd_32.h
index e1cc62d..4d8873a 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_32.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_32.h
@@ -1,4 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NR_getppid
+#define __NR_getppid 64
+#endif
 #ifndef __NR_gettid
 #define __NR_gettid 224
 #endif
diff --git a/tools/arch/x86/include/uapi/asm/unistd_64.h b/tools/arch/x86/include/uapi/asm/unistd_64.h
index ce8b7ab..e29038a 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_64.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_64.h
@@ -1,4 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NR_getppid
+#define __NR_getppid 110
+#endif
 #ifndef __NR_gettid
 #define __NR_gettid 186
 #endif
diff --git a/tools/perf/bench/syscall.c b/tools/perf/bench/syscall.c
index 9b75101..746fd71 100644
--- a/tools/perf/bench/syscall.c
+++ b/tools/perf/bench/syscall.c
@@ -30,25 +30,41 @@ static const char * const bench_syscall_usage[] = {
 	NULL
 };
 
-int bench_syscall_basic(int argc, const char **argv)
+static int bench_syscall_common(int argc, const char **argv, int syscall)
 {
 	struct timeval start, stop, diff;
 	unsigned long long result_usec = 0;
+	const char *name = NULL;
 	int i;
 
 	argc = parse_options(argc, argv, options, bench_syscall_usage, 0);
 
 	gettimeofday(&start, NULL);
 
-	for (i = 0; i < loops; i++)
-		getppid();
+	for (i = 0; i < loops; i++) {
+		switch (syscall) {
+		case __NR_getppid:
+			getppid();
+			break;
+		default:
+			break;
+		}
+	}
 
 	gettimeofday(&stop, NULL);
 	timersub(&stop, &start, &diff);
 
+	switch (syscall) {
+	case __NR_getppid:
+		name = "getppid()";
+		break;
+	default:
+		break;
+	}
+
 	switch (bench_format) {
 	case BENCH_FORMAT_DEFAULT:
-		printf("# Executed %'d getppid() calls\n", loops);
+		printf("# Executed %'d %s calls\n", loops, name);
 
 		result_usec = diff.tv_sec * 1000000;
 		result_usec += diff.tv_usec;
@@ -79,3 +95,8 @@ int bench_syscall_basic(int argc, const char **argv)
 
 	return 0;
 }
+
+int bench_syscall_basic(int argc, const char **argv)
+{
+	return bench_syscall_common(argc, argv, __NR_getppid);
+}
-- 
2.1.0

[PATCH v5 3/4] perf bench syscall: Add getpgid syscall benchmark

[Tiezhu Yang]

This commit adds a simple getpgid syscall benchmark, more syscall
benchmarks can be added in the future.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.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                  | 11 +++++++++++
 tools/perf/builtin-bench.c                  |  1 +
 5 files changed, 19 insertions(+)

diff --git a/tools/arch/x86/include/uapi/asm/unistd_32.h b/tools/arch/x86/include/uapi/asm/unistd_32.h
index 4d8873a..053122c 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_32.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_32.h
@@ -2,6 +2,9 @@
 #ifndef __NR_getppid
 #define __NR_getppid 64
 #endif
+#ifndef __NR_getpgid
+#define __NR_getpgid 132
+#endif
 #ifndef __NR_gettid
 #define __NR_gettid 224
 #endif
diff --git a/tools/arch/x86/include/uapi/asm/unistd_64.h b/tools/arch/x86/include/uapi/asm/unistd_64.h
index e29038a..54a6c4d 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_64.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_64.h
@@ -2,6 +2,9 @@
 #ifndef __NR_getppid
 #define __NR_getppid 110
 #endif
+#ifndef __NR_getpgid
+#define __NR_getpgid 121
+#endif
 #ifndef __NR_gettid
 #define __NR_gettid 186
 #endif
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
index 6cefb43..0c03f12 100644
--- a/tools/perf/bench/bench.h
+++ b/tools/perf/bench/bench.h
@@ -34,6 +34,7 @@ int bench_numa(int argc, const char **argv);
 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_getpgid(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 746fd71..6411b14 100644
--- a/tools/perf/bench/syscall.c
+++ b/tools/perf/bench/syscall.c
@@ -46,6 +46,9 @@ static int bench_syscall_common(int argc, const char **argv, int syscall)
 		case __NR_getppid:
 			getppid();
 			break;
+		case __NR_getpgid:
+			getpgid(0);
+			break;
 		default:
 			break;
 		}
@@ -58,6 +61,9 @@ static int bench_syscall_common(int argc, const char **argv, int syscall)
 	case __NR_getppid:
 		name = "getppid()";
 		break;
+	case __NR_getpgid:
+		name = "getpgid()";
+		break;
 	default:
 		break;
 	}
@@ -100,3 +106,8 @@ int bench_syscall_basic(int argc, const char **argv)
 {
 	return bench_syscall_common(argc, argv, __NR_getppid);
 }
+
+int bench_syscall_getpgid(int argc, const char **argv)
+{
+	return bench_syscall_common(argc, argv, __NR_getpgid);
+}
diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index 334ab89..c9a02ac 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -52,6 +52,7 @@ static struct bench sched_benchmarks[] = {
 
 static struct bench syscall_benchmarks[] = {
 	{ "basic",	"Benchmark for basic getppid(2) calls",		bench_syscall_basic	},
+	{ "getpgid",	"Benchmark for getpgid(2) calls",		bench_syscall_getpgid	},
 	{ "all",	"Run all syscall benchmarks",			NULL			},
 	{ NULL,		NULL,						NULL			},
 };
-- 
2.1.0

[PATCH v5 4/4] perf bench syscall: Add execve syscall benchmark

[Tiezhu Yang]

This commit adds the execve syscall benchmark, more syscall
benchmarks can be added in the future.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.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 053122c..2712d5e 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_32.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_32.h
@@ -1,4 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NR_execve
+#define __NR_execve 11
+#endif
 #ifndef __NR_getppid
 #define __NR_getppid 64
 #endif
diff --git a/tools/arch/x86/include/uapi/asm/unistd_64.h b/tools/arch/x86/include/uapi/asm/unistd_64.h
index 54a6c4d..a6f7fe8 100644
--- a/tools/arch/x86/include/uapi/asm/unistd_64.h
+++ b/tools/arch/x86/include/uapi/asm/unistd_64.h
@@ -1,4 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NR_execve
+#define __NR_execve 59
+#endif
 #ifndef __NR_getppid
 #define __NR_getppid 110
 #endif
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
index 0c03f12..4588d3a 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_getpgid(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 6411b14..fe79f7f 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_getpgid:
 			getpgid(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_getpgid:
 		name = "getpgid()";
 		break;
+	case __NR_execve:
+		name = "execve()";
+		break;
 	default:
 		break;
 	}
@@ -111,3 +142,8 @@ int bench_syscall_getpgid(int argc, const char **argv)
 {
 	return bench_syscall_common(argc, argv, __NR_getpgid);
 }
+
+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 c9a02ac..35f9df8 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	},
 	{ "getpgid",	"Benchmark for getpgid(2) calls",		bench_syscall_getpgid	},
+	{ "execve",	"Benchmark for execve(2) calls",		bench_syscall_execve	},
 	{ "all",	"Run all syscall benchmarks",			NULL			},
 	{ NULL,		NULL,						NULL			},
 };
-- 
2.1.0

Re: [PATCH v5 0/4] perf: Add more syscalls to benchmark

[Tiezhu Yang]

On 11/10/2022 11:50 AM, Tiezhu Yang wrote:
> Tested on x86_64, arm64, mips64 and loongarch64.
>
> Tiezhu Yang (4):
>   tools x86: Keep list sorted by number in unistd_{32,64}.h
>   perf bench syscall: Introduce bench_syscall_common()
>   perf bench syscall: Add getpgid syscall benchmark
>   perf bench syscall: Add execve syscall benchmark
>
>  tools/arch/x86/include/uapi/asm/unistd_32.h | 23 ++++++---
>  tools/arch/x86/include/uapi/asm/unistd_64.h | 23 ++++++---
>  tools/perf/bench/bench.h                    |  2 +
>  tools/perf/bench/syscall.c                  | 76 +++++++++++++++++++++++++++--
>  tools/perf/builtin-bench.c                  |  2 +
>  5 files changed, 108 insertions(+), 18 deletions(-)
>

Ping, any more comments?

Thanks,
Tiezhu

Re: [PATCH v5 0/4] perf: Add more syscalls to benchmark

[Tiezhu Yang]

On 12/03/2022 05:19 PM, Tiezhu Yang wrote:
>
>
> On 11/10/2022 11:50 AM, Tiezhu Yang wrote:
>> Tested on x86_64, arm64, mips64 and loongarch64.
>>
>> Tiezhu Yang (4):
>>   tools x86: Keep list sorted by number in unistd_{32,64}.h
>>   perf bench syscall: Introduce bench_syscall_common()
>>   perf bench syscall: Add getpgid syscall benchmark
>>   perf bench syscall: Add execve syscall benchmark
>>
>>  tools/arch/x86/include/uapi/asm/unistd_32.h | 23 ++++++---
>>  tools/arch/x86/include/uapi/asm/unistd_64.h | 23 ++++++---
>>  tools/perf/bench/bench.h                    |  2 +
>>  tools/perf/bench/syscall.c                  | 76
>> +++++++++++++++++++++++++++--
>>  tools/perf/builtin-bench.c                  |  2 +
>>  5 files changed, 108 insertions(+), 18 deletions(-)
>>
>
> Ping, any more comments?
>
> Thanks,
> Tiezhu

Hi all,

If this patch series has no value and is not acceptable,
or what should I do to update, please let me know.

Thanks,
Tiezhu

Re: [PATCH v5 0/4] perf: Add more syscalls to benchmark

[Namhyung Kim]

Hello,

On Thu, Jan 5, 2023 at 5:23 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
>
>
>
> On 12/03/2022 05:19 PM, Tiezhu Yang wrote:
> >
> >
> > On 11/10/2022 11:50 AM, Tiezhu Yang wrote:
> >> Tested on x86_64, arm64, mips64 and loongarch64.
> >>
> >> Tiezhu Yang (4):
> >>   tools x86: Keep list sorted by number in unistd_{32,64}.h
> >>   perf bench syscall: Introduce bench_syscall_common()
> >>   perf bench syscall: Add getpgid syscall benchmark
> >>   perf bench syscall: Add execve syscall benchmark
> >>
> >>  tools/arch/x86/include/uapi/asm/unistd_32.h | 23 ++++++---
> >>  tools/arch/x86/include/uapi/asm/unistd_64.h | 23 ++++++---
> >>  tools/perf/bench/bench.h                    |  2 +
> >>  tools/perf/bench/syscall.c                  | 76
> >> +++++++++++++++++++++++++++--
> >>  tools/perf/builtin-bench.c                  |  2 +
> >>  5 files changed, 108 insertions(+), 18 deletions(-)
> >>
> >
> > Ping, any more comments?
> >
> > Thanks,
> > Tiezhu
>
> Hi all,
>
> If this patch series has no value and is not acceptable,
> or what should I do to update, please let me know.

I'm so sorry about being late a lot.
I don't have any objection to this series.

For the execve bench, I think it's actually fork + execve
then maybe it makes sense to have a fork only bench
to compare the execve part precisely.

But it can be added later, so

Acked-by: Namhyung Kim <namhyung@kernel.org>

Thanks,
Namhyung

Re: [PATCH v5 0/4] perf: Add more syscalls to benchmark

[Tiezhu Yang]

On 01/07/2023 05:04 AM, Namhyung Kim wrote:
> Hello,
>
> On Thu, Jan 5, 2023 at 5:23 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
>>
>>
>>
>> On 12/03/2022 05:19 PM, Tiezhu Yang wrote:
>>>
>>>
>>> On 11/10/2022 11:50 AM, Tiezhu Yang wrote:
>>>> Tested on x86_64, arm64, mips64 and loongarch64.
>>>>
>>>> Tiezhu Yang (4):
>>>>   tools x86: Keep list sorted by number in unistd_{32,64}.h
>>>>   perf bench syscall: Introduce bench_syscall_common()
>>>>   perf bench syscall: Add getpgid syscall benchmark
>>>>   perf bench syscall: Add execve syscall benchmark
>>>>
>>>>  tools/arch/x86/include/uapi/asm/unistd_32.h | 23 ++++++---
>>>>  tools/arch/x86/include/uapi/asm/unistd_64.h | 23 ++++++---
>>>>  tools/perf/bench/bench.h                    |  2 +
>>>>  tools/perf/bench/syscall.c                  | 76
>>>> +++++++++++++++++++++++++++--
>>>>  tools/perf/builtin-bench.c                  |  2 +
>>>>  5 files changed, 108 insertions(+), 18 deletions(-)
>>>>
>>>
>>> Ping, any more comments?
>>>
>>> Thanks,
>>> Tiezhu
>>
>> Hi all,
>>
>> If this patch series has no value and is not acceptable,
>> or what should I do to update, please let me know.
>
> I'm so sorry about being late a lot.
> I don't have any objection to this series.
>
> For the execve bench, I think it's actually fork + execve
> then maybe it makes sense to have a fork only bench
> to compare the execve part precisely.
>
> But it can be added later, so
>
> Acked-by: Namhyung Kim <namhyung@kernel.org>
>
> Thanks,
> Namhyung
>

Hi Namhyung,

Thank you very much. I will submit another single patch
to benchmark fork after this series is applied.

Thanks,
Tiezhu

Re: [PATCH v5 0/4] perf: Add more syscalls to benchmark

[Arnaldo Carvalho de Melo]

Em Fri, Jan 06, 2023 at 01:04:42PM -0800, Namhyung Kim escreveu:
> Hello,
> 
> On Thu, Jan 5, 2023 at 5:23 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
> >
> >
> >
> > On 12/03/2022 05:19 PM, Tiezhu Yang wrote:
> > >
> > >
> > > On 11/10/2022 11:50 AM, Tiezhu Yang wrote:
> > >> Tested on x86_64, arm64, mips64 and loongarch64.
> > >>
> > >> Tiezhu Yang (4):
> > >>   tools x86: Keep list sorted by number in unistd_{32,64}.h
> > >>   perf bench syscall: Introduce bench_syscall_common()
> > >>   perf bench syscall: Add getpgid syscall benchmark
> > >>   perf bench syscall: Add execve syscall benchmark
> > >>
> > >>  tools/arch/x86/include/uapi/asm/unistd_32.h | 23 ++++++---
> > >>  tools/arch/x86/include/uapi/asm/unistd_64.h | 23 ++++++---
> > >>  tools/perf/bench/bench.h                    |  2 +
> > >>  tools/perf/bench/syscall.c                  | 76
> > >> +++++++++++++++++++++++++++--
> > >>  tools/perf/builtin-bench.c                  |  2 +
> > >>  5 files changed, 108 insertions(+), 18 deletions(-)
> > >>
> > >
> > > Ping, any more comments?
> > >
> > > Thanks,
> > > Tiezhu
> >
> > Hi all,
> >
> > If this patch series has no value and is not acceptable,
> > or what should I do to update, please let me know.
> 
> I'm so sorry about being late a lot.
> I don't have any objection to this series.
> 
> For the execve bench, I think it's actually fork + execve
> then maybe it makes sense to have a fork only bench
> to compare the execve part precisely.
> 
> But it can be added later, so
> 
> Acked-by: Namhyung Kim <namhyung@kernel.org>

Applied.

- Arnaldo