diff options
Diffstat (limited to 'tools/perf/bench/syscall.c')
| -rw-r--r-- | tools/perf/bench/syscall.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/tools/perf/bench/syscall.c b/tools/perf/bench/syscall.c index fe79f7f3091e..ea4dfc07cbd6 100644 --- a/tools/perf/bench/syscall.c +++ b/tools/perf/bench/syscall.c @@ -18,6 +18,10 @@ #include <unistd.h> #include <stdlib.h> +#ifndef __NR_fork +#define __NR_fork -1 +#endif + #define LOOPS_DEFAULT 10000000 static int loops = LOOPS_DEFAULT; @@ -31,6 +35,23 @@ static const char * const bench_syscall_usage[] = { NULL }; +static void test_fork(void) +{ + pid_t pid = fork(); + + if (pid < 0) { + fprintf(stderr, "fork failed\n"); + exit(1); + } else if (pid == 0) { + exit(0); + } else { + if (waitpid(pid, NULL, 0) < 0) { + fprintf(stderr, "waitpid failed\n"); + exit(1); + } + } +} + static void test_execve(void) { const char *pathname = "/bin/true"; @@ -71,6 +92,12 @@ static int bench_syscall_common(int argc, const char **argv, int syscall) case __NR_getpgid: getpgid(0); break; + case __NR_fork: + test_fork(); + /* Only loop 10000 times to save time */ + if (i == 10000) + loops = 10000; + break; case __NR_execve: test_execve(); /* Only loop 10000 times to save time */ @@ -92,6 +119,9 @@ static int bench_syscall_common(int argc, const char **argv, int syscall) case __NR_getpgid: name = "getpgid()"; break; + case __NR_fork: + name = "fork()"; + break; case __NR_execve: name = "execve()"; break; @@ -143,6 +173,11 @@ int bench_syscall_getpgid(int argc, const char **argv) return bench_syscall_common(argc, argv, __NR_getpgid); } +int bench_syscall_fork(int argc, const char **argv) +{ + return bench_syscall_common(argc, argv, __NR_fork); +} + int bench_syscall_execve(int argc, const char **argv) { return bench_syscall_common(argc, argv, __NR_execve); |