From: David Arcari <darcari@redhat.com>
Date: Tue, 12 Feb 2019 14:34:39 +0000 (-0500)
Subject: tools/power turbostat: return the exit status of a command
X-Git-Tag: v4.9.170~39
X-Git-Url: http://git.ipfire.org/?p=people%2Farne_f%2Fkernel.git;a=commitdiff_plain;h=b019294576e650271c3eff44d0fe53c58bcafcd8

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

[ 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>
---

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 5ec2de8f49b46..b4c5d96e54c12 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -3691,6 +3691,9 @@ 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()