* [PATCH v4 0/4] perf: Add more syscalls to benchmark
@ 2022-11-09 8:29 Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 1/4] tools x86: Keep list sorted by number in unistd_{32,64}.h Tiezhu Yang
` (4 more replies)
0 siblings, 5 replies; 7+ messages in thread
From: Tiezhu Yang @ 2022-11-09 8:29 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
linux-kernel, linux-perf-users
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 getpgrp 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
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v4 1/4] tools x86: Keep list sorted by number in unistd_{32,64}.h
2022-11-09 8:29 [PATCH v4 0/4] perf: Add more syscalls to benchmark Tiezhu Yang
@ 2022-11-09 8:29 ` Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 2/4] perf bench syscall: Introduce bench_syscall_common() Tiezhu Yang
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Tiezhu Yang @ 2022-11-09 8:29 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
linux-kernel, linux-perf-users
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
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v4 2/4] perf bench syscall: Introduce bench_syscall_common()
2022-11-09 8:29 [PATCH v4 0/4] perf: Add more syscalls to benchmark Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 1/4] tools x86: Keep list sorted by number in unistd_{32,64}.h Tiezhu Yang
@ 2022-11-09 8:29 ` Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 3/4] perf bench syscall: Add getpgrp syscall benchmark Tiezhu Yang
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Tiezhu Yang @ 2022-11-09 8:29 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
linux-kernel, linux-perf-users
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
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v4 3/4] perf bench syscall: Add getpgrp syscall benchmark
2022-11-09 8:29 [PATCH v4 0/4] perf: Add more syscalls to benchmark Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 1/4] tools x86: Keep list sorted by number in unistd_{32,64}.h Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 2/4] perf bench syscall: Introduce bench_syscall_common() Tiezhu Yang
@ 2022-11-09 8:29 ` Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 4/4] perf bench syscall: Add execve " Tiezhu Yang
2022-11-09 18:15 ` [PATCH v4 0/4] perf: Add more syscalls to benchmark Namhyung Kim
4 siblings, 0 replies; 7+ messages in thread
From: Tiezhu Yang @ 2022-11-09 8:29 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
linux-kernel, linux-perf-users
This commit adds a simple getpgrp 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..2bcf47f 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_getpgrp
+#define __NR_getpgrp 65
+#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..5472203 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_getpgrp
+#define __NR_getpgrp 111
+#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..7ccc021 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_getpgrp(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..2b89884 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_getpgrp:
+ getpgrp();
+ 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_getpgrp:
+ name = "getpgrp()";
+ 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_getpgrp(int argc, const char **argv)
+{
+ return bench_syscall_common(argc, argv, __NR_getpgrp);
+}
diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index 334ab89..20ca4ac 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 },
+ { "getpgrp", "Benchmark for getpgrp(2) calls", bench_syscall_getpgrp },
{ "all", "Run all syscall benchmarks", NULL },
{ NULL, NULL, NULL },
};
--
2.1.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v4 4/4] perf bench syscall: Add execve syscall benchmark
2022-11-09 8:29 [PATCH v4 0/4] perf: Add more syscalls to benchmark Tiezhu Yang
` (2 preceding siblings ...)
2022-11-09 8:29 ` [PATCH v4 3/4] perf bench syscall: Add getpgrp syscall benchmark Tiezhu Yang
@ 2022-11-09 8:29 ` Tiezhu Yang
2022-11-09 18:15 ` [PATCH v4 0/4] perf: Add more syscalls to benchmark Namhyung Kim
4 siblings, 0 replies; 7+ messages in thread
From: Tiezhu Yang @ 2022-11-09 8:29 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
linux-kernel, linux-perf-users
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 2bcf47f..d20b43c 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 5472203..80d4d90 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 7ccc021..9d6f692 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_getpgrp(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 2b89884..c71334c 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_getpgrp:
getpgrp();
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_getpgrp:
name = "getpgrp()";
break;
+ case __NR_execve:
+ name = "execve()";
+ break;
default:
break;
}
@@ -111,3 +142,8 @@ int bench_syscall_getpgrp(int argc, const char **argv)
{
return bench_syscall_common(argc, argv, __NR_getpgrp);
}
+
+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 20ca4ac..ace7a2a 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 },
{ "getpgrp", "Benchmark for getpgrp(2) calls", bench_syscall_getpgrp },
+ { "execve", "Benchmark for execve(2) calls", bench_syscall_execve },
{ "all", "Run all syscall benchmarks", NULL },
{ NULL, NULL, NULL },
};
--
2.1.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v4 0/4] perf: Add more syscalls to benchmark
2022-11-09 8:29 [PATCH v4 0/4] perf: Add more syscalls to benchmark Tiezhu Yang
` (3 preceding siblings ...)
2022-11-09 8:29 ` [PATCH v4 4/4] perf bench syscall: Add execve " Tiezhu Yang
@ 2022-11-09 18:15 ` Namhyung Kim
2022-11-10 1:58 ` Tiezhu Yang
4 siblings, 1 reply; 7+ messages in thread
From: Namhyung Kim @ 2022-11-09 18:15 UTC (permalink / raw)
To: Tiezhu Yang
Cc: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
Mark Rutland, Alexander Shishkin, Jiri Olsa, linux-kernel,
linux-perf-users
Hello,
On Wed, Nov 9, 2022 at 12:29 AM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
>
> 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 getpgrp syscall benchmark
> perf bench syscall: Add execve syscall benchmark
Have you tested it on non-x86 too? It seems you only added the syscall
numbers to x86.
Thanks,
Namhyung
>
> 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
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v4 0/4] perf: Add more syscalls to benchmark
2022-11-09 18:15 ` [PATCH v4 0/4] perf: Add more syscalls to benchmark Namhyung Kim
@ 2022-11-10 1:58 ` Tiezhu Yang
0 siblings, 0 replies; 7+ messages in thread
From: Tiezhu Yang @ 2022-11-10 1:58 UTC (permalink / raw)
To: Namhyung Kim
Cc: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
Mark Rutland, Alexander Shishkin, Jiri Olsa, linux-kernel,
linux-perf-users
On 11/10/2022 02:15 AM, Namhyung Kim wrote:
> Hello,
>
> On Wed, Nov 9, 2022 at 12:29 AM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
>>
>> 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 getpgrp syscall benchmark
>> perf bench syscall: Add execve syscall benchmark
>
> Have you tested it on non-x86 too? It seems you only added the syscall
> numbers to x86.
>
Hi Namhyung,
Thank you for your reply.
I tested only on x86, when build on arm64, there exists
the following build error:
error: ‘__NR_getpgrp’ undeclared (first use in this function)
this is because __NR_getpgrp is deprecated on some archs.
Sorry for that, let me use getpgid, I will test on x86_64, arm64,
mips64 and loongarch64, and then send v5, thank you.
Thanks,
Tiezhu
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2022-11-10 2:02 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2022-11-09 8:29 ` [PATCH v4 2/4] perf bench syscall: Introduce bench_syscall_common() Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 3/4] perf bench syscall: Add getpgrp syscall benchmark Tiezhu Yang
2022-11-09 8:29 ` [PATCH v4 4/4] perf bench syscall: Add execve " Tiezhu Yang
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