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| author | Shaopeng Tan <tan.shaopeng@jp.fujitsu.com> | 2023-04-13 10:22:56 +0300 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2023-04-13 20:34:12 +0300 |
| commit | a080b6e74b241dbc7e13dd378d6f6fc884579196 (patch) | |
| tree | b572b6b6ab420e132cc9f0d4d957398f312de376 /tools/testing/selftests/resctrl/resctrlfs.c | |
| parent | 1e359b6a9422a2bdef14798d539e9d5783bdd5c1 (diff) | |
| download | linux-a080b6e74b241dbc7e13dd378d6f6fc884579196.tar.xz | |
selftests/resctrl: Flush stdout file buffer before executing fork()
When a process has buffered output, a child process created by fork()
will also copy buffered output. When using kselftest framework,
the output (resctrl test result message) will be printed multiple times.
Add fflush() to flush out the buffered output before executing fork().
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/resctrl/resctrlfs.c')
| -rw-r--r-- | tools/testing/selftests/resctrl/resctrlfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index b31b1d9e41d1..fb00245dee92 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -678,6 +678,7 @@ int filter_dmesg(void) perror("pipe"); return ret; } + fflush(stdout); pid = fork(); if (pid == 0) { close(pipefds[0]); |