tools/power turbostat: return the exit status of a command

BugLink: https://bugs.launchpad.net/bugs/1838349
[ Upstream commit 2a95496634a017c19641f26f00907af75b962f01 ]

turbostat failed to return a non-zero exit status even though the
supplied command (turbostat <command>) failed.  Currently when turbostat
forks a command it returns zero instead of the actual exit status of the
command.  Modify the code to return the exit status.

Signed-off-by: David Arcari <darcari@redhat.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index e2921343250f4ba4068568b796e7f0f630c75efb..3e5f8b3db27200e46934c14debdf2feaa51896ac 100644 (file)
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -4588,6 +4588,9 @@ int fork_it(char **argv)
                signal(SIGQUIT, SIG_IGN);
                if (waitpid(child_pid, &status, 0) == -1)
                        err(status, "waitpid");
+
+               if (WIFEXITED(status))
+                       status = WEXITSTATUS(status);
        }
        /*
         * n.b. fork_it() does not check for errors from for_all_cpus()