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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, David Arcari <darcari@redhat.com>,
        Len Brown <len.brown@intel.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.14 19/92] tools/power turbostat: return the exit status of a command
Date:   Thu, 18 Apr 2019 19:56:37 +0200
Message-Id: <20190418160431.992528077@linuxfoundation.org>
In-Reply-To: <20190418160430.325165109@linuxfoundation.org>
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[ 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>
---
 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 7a1b20ec5216..d1b2348db0f9 100644
--- 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()
-- 
2.19.1