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Date: Thu, 10 Nov 2022 11:50:08 +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> Cc: Mark Rutland <mark.rutland@....com>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>, linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org Subject: [PATCH v5 4/4] perf bench syscall: Add execve syscall benchmark This commit adds the execve syscall benchmark, more syscall benchmarks can be added in the future. 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 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
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