On Sat, 8 Oct 2022 08:32:50 +0000 Leo Yan <leo.yan@xxxxxxxxxx> wrote: > 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: Leo Yan <leo.yan@xxxxxxxxxx> > --- > Documentation/trace/ftrace.rst | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/Documentation/trace/ftrace.rst b/Documentation/trace/ftrace.rst > index b37dc19e4d40..60bceb018d6a 100644 > --- a/Documentation/trace/ftrace.rst > +++ b/Documentation/trace/ftrace.rst > @@ -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); Acked-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> -- Steve > > Note: Writing into the trace_marker file can also initiate triggers > that are written into /sys/kernel/tracing/events/ftrace/print/trigger