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

[David Arcari]

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 <darc...@redhat.com>
Cc: Len Brown <len.br...@intel.com>
Cc: Jirka Hladky <jhla...@redhat.com>
Cc: linux-kernel@vger.kernel.org
---
 tools/power/x86/turbostat/turbostat.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/power/x86/turbostat/turbostat.c 
b/tools/power/x86/turbostat/turbostat.c
index 9327c0d..c3fad06 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -5077,6 +5077,9 @@ 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()
-- 
1.8.3.1