Commit 9c1ab6d5 authored by Leo Yan's avatar Leo Yan Committed by Jonathan Corbet
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docs: ftrace: Correct access mode 



The documentation gives an example for opening trace marker with
write-only mode, but the flag WR_ONLY is not defined by glibc.

Use O_WRONLY to replace it.

Signed-off-by: default avatarLeo Yan <leo.yan@linaro.org>
Acked-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20221008083250.3160-1-leo.yan@linaro.org


Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 69d517e6

Documentation/trace/ftrace.rst

+1 −1
Original line number Diff line number Diff line
@@ -564,7 +564,7 @@ of ftrace. Here is a list of some of the key files: 


	start::



		trace_fd = open("trace_marker", WR_ONLY);

		trace_fd = open("trace_marker", O_WRONLY);



	Note: Writing into the trace_marker file can also initiate triggers

	      that are written into /sys/kernel/tracing/events/ftrace/print/trigger