selftests/powerpc: Put the test in a separate process group

Allows us to kill the test and any children it has spawned.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/tools/testing/selftests/powerpc/harness.c b/tools/testing/selftests/powerpc/harness.c
index e80c42a584fe..532ddff8a669 100644
--- a/tools/testing/selftests/powerpc/harness.c
+++ b/tools/testing/selftests/powerpc/harness.c
@@ -30,12 +30,15 @@ int run_test(int (test_function)(void), char *name)
 
         pid = fork();
         if (pid == 0) {
+                setpgid(0, 0);
                 exit(test_function());
         } else if (pid == -1) {
                 perror("fork");
                 return 1;
         }
 
+        setpgid(pid, pid);
+
         /* Wake us up in timeout seconds */
         alarm(TIMEOUT);
         terminated = false;
@@ -50,17 +53,20 @@ wait:
 
                 if (terminated) {
                         printf("!! force killing %s\n", name);
-                        kill(pid, SIGKILL);
+                        kill(-pid, SIGKILL);
                         return 1;
                 } else {
                         printf("!! killing %s\n", name);
-                        kill(pid, SIGTERM);
+                        kill(-pid, SIGTERM);
                         terminated = true;
                         alarm(KILL_TIMEOUT);
                         goto wait;
                 }
         }
 
+        /* Kill anything else in the process group that is still running */
+        kill(-pid, SIGTERM);
+
         if (WIFEXITED(status))
                 status = WEXITSTATUS(status);
         else {