linux-kernel - [PATCH] rcu: Fix rcu_torture

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Message-Id: <20230306122744.236790-1-douglas.raillard@arm.com>
Date:   Mon,  6 Mar 2023 12:27:43 +0000
From:   Douglas RAILLARD <douglas.raillard@....com>
To:     douglas.raillard@....com, Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-kernel@...r.kernel.org (open list:TRACING),
        linux-trace-kernel@...r.kernel.org (open list:TRACING)
Subject: [PATCH] rcu: Fix rcu_torture_read ftrace event

From: Douglas Raillard <douglas.raillard@....com>

Fix the rcutorturename field so that its size is correctly reported in
the text format embedded in trace.dat files. As it stands, it is
reported as being of size 1:

    field:char rcutorturename[8];   offset:8;       size:1; signed:0;

Signed-off-by: Douglas Raillard <douglas.raillard@....com>
---
 include/trace/events/rcu.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index 90b2fb0292cb..012fa0d171b2 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -768,7 +768,7 @@ TRACE_EVENT_RCU(rcu_torture_read,
 	TP_ARGS(rcutorturename, rhp, secs, c_old, c),
 
 	TP_STRUCT__entry(
-		__field(char, rcutorturename[RCUTORTURENAME_LEN])
+		__array(char, rcutorturename, RCUTORTURENAME_LEN)
 		__field(struct rcu_head *, rhp)
 		__field(unsigned long, secs)
 		__field(unsigned long, c_old)
-- 
2.25.1