linux-kernel - [PATCH] tracing: fix incorrcet short option in usage text for --threads

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Message-ID: <20251106031040.1869-1-zhangchujun@cmss.chinamobile.com>
Date: Thu,  6 Nov 2025 11:10:40 +0800
From: Zhang Chujun <zhangchujun@...s.chinamobile.com>
To: rostedt@...dmis.org
Cc: linux-trace-devel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Zhang Chujun <zhangchujun@...s.chinamobile.com>
Subject: [PATCH] tracing: fix incorrcet short option in usage text for --threads

The help message incorrectly listed '-t' as the short option for
--threads, but the actual getopt_long configuration uses '-e'.
This mismatch can confuse users and lead to incorrect command-line
usage. This patch updates the usage string to correctly show:
	"-e, --threads NRTHR"
to match the implementation.

Note: checkpatch.pl reports a false-positive spelling warning on
'Run', which is intentional.

Signed-off-by: Zhang Chujun <zhangchujun@...s.chinamobile.com>

diff --git a/tools/tracing/latency/latency-collector.c b/tools/tracing/latency/latency-collector.c
index cf263fe9deaf..ef97916e3873 100644
--- a/tools/tracing/latency/latency-collector.c
+++ b/tools/tracing/latency/latency-collector.c
@@ -1725,7 +1725,7 @@ static void show_usage(void)
 "-n, --notrace\t\tIf latency is detected, do not print out the content of\n"
 "\t\t\tthe trace file to standard output\n\n"
 
-"-t, --threads NRTHR\tRun NRTHR threads for printing. Default is %d.\n\n"
+"-e, --threads NRTHR\tRun NRTHR threads for printing. Default is %d.\n\n"
 
 "-r, --random\t\tArbitrarily sleep a certain amount of time, default\n"
 "\t\t\t%ld ms, before reading the trace file. The\n"
-- 
2.50.1.windows.1