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List:       linux-kernel
Subject:    [PATCH] tools/power turbostat: make the '-n' command line argument work in all cases
From:       David Arcari <darcari () redhat ! com>
Date:       2024-05-20 18:57:49
Message-ID: 20240520185749.1404283-1-darcari () redhat ! com
[Download RAW message or body]

In some cases specifying the '-n' command line argument will cause
turbostat to fail.  For instance 'turbostat -n 1' works fine; however,
'turbostat -n 1 -d' will fail.  This is the result of the first call
to getopt_long_only() where "MP" is specified as the optstring.  This can
be easily fixed by changing the optstring from "MP" to "MPn:" to remove
ambiguity between the arguments.

Signed-off-by: David Arcari <darcari@redhat.com>
Cc: Len Brown <lenb@kernel.org>
Cc: linux-kernel@vger.kernel.org
---
 tools/power/x86/turbostat/turbostat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 98256468e248..8071a3ef2a2e 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -7851,7 +7851,7 @@ void cmdline(int argc, char **argv)
 	 * Parse some options early, because they may make other options invalid,
 	 * like adding the MSR counter with --add and at the same time using --no-msr.
 	 */
-	while ((opt = getopt_long_only(argc, argv, "MP", long_options, &option_index)) != -1) {
+	while ((opt = getopt_long_only(argc, argv, "MPn:", long_options, &option_index)) != -1) {
 		switch (opt) {
 		case 'M':
 			no_msr = 1;
-- 
2.44.0


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