linux-kernel - [PATCH 1/3] tracing/eprobe: Fix to add filter on eprobe description in README file

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Message-Id: <167309833728.640500.12232259238201433587.stgit@devnote3>
Date:   Sat,  7 Jan 2023 22:32:17 +0900
From:   "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To:     Shuah Khan <shuah@...nel.org>, Steven Rostedt <rostedt@...dmis.org>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: [PATCH 1/3] tracing/eprobe: Fix to add filter on eprobe description in README file

From: Masami Hiramatsu (Google) <mhiramat@...nel.org>

Fix to add a description of the filter on eprobe in README file. This
is required to identify the kernel supports the filter on eprobe or not.

Fixes: 752be5c5c910 ("tracing/eprobe: Add eprobe filter support")
Cc: stable@...r.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 kernel/trace/trace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a555a861b978..d0c22766dc26 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5598,7 +5598,7 @@ static const char readme_msg[] =
 #ifdef CONFIG_HIST_TRIGGERS
 	"\t           s:[synthetic/]<event> <field> [<field>]\n"
 #endif
-	"\t           e[:[<group>/][<event>]] <attached-group>.<attached-event> [<args>]\n"
+	"\t           e[:[<group>/][<event>]] <attached-group>.<attached-event> [<args>] [if <filter>]\n"
 	"\t           -:[<group>/][<event>]\n"
 #ifdef CONFIG_KPROBE_EVENTS
 	"\t    place: [<module>:]<symbol>[+<offset>]|<memaddr>\n"