linux-kernel - [PATCH v2 1/5] selftests/resctrl: Kill the child process created by fork() when the SIGTERM signal comes

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Date:   Mon, 13 Dec 2021 19:01:50 +0900
From:   Shaopeng Tan <tan.shaopeng@...fujitsu.com>
To:     Fenghua Yu <fenghua.yu@...el.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Shuah Khan <shuah@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        tan.shaopeng@...fujitsu.com
Subject: [PATCH v2 1/5] selftests/resctrl: Kill the child process created by fork() when the SIGTERM signal comes

In kselftest framework there is a limited time for each sub test,
when the time limit comes SIGTEM signal will be sent to sub test by
"timeout --foregroup <seconds>" command.
In resctrl_tests, fork() is used to create a child process.
This commit ensures child process to be killed before parent process
exiting if SIGTERM signal comes.

Signed-off-by: Shaopeng Tan <tan.shaopeng@...fujitsu.com>
---
 tools/testing/selftests/resctrl/resctrl_val.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c
index 95224345c78e..b32b96356ec7 100644
--- a/tools/testing/selftests/resctrl/resctrl_val.c
+++ b/tools/testing/selftests/resctrl/resctrl_val.c
@@ -678,6 +678,7 @@ int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param)
 	sigemptyset(&sigact.sa_mask);
 	sigact.sa_flags = SA_SIGINFO;
 	if (sigaction(SIGINT, &sigact, NULL) ||
+	    sigaction(SIGTERM, &sigact, NULL) ||
 	    sigaction(SIGHUP, &sigact, NULL)) {
 		perror("# sigaction");
 		ret = errno;
-- 
2.27.0