Messages in this thread | | | Subject | Re: [PATCH] tracing: Fix file mode of free_buffer | From | Steven Rostedt <> | Date | Tue, 28 May 2013 15:31:57 -0400 |
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David, Vaibhav,
Any comments on this patch?
-- Steve
On Sun, 2013-05-26 at 16:52 +0800, Wang YanQing wrote: > Commit 4f271a2a60c748599b30bb4dafff30d770439b96 > (tracing: Add a proc file to stop tracing and free buffer) > implement a method to free up ring buffer in kernel memory > in the release code path of free_buffer's fd. > > Then we don't need read/write support for free_buffer, > indeed we just have a dummy write fop, and don't implement read fop. > > So the 0200 is more reasonable file mode for free_buffer than > the current file mode 0644. > > Signed-off-by: Wang YanQing <udknight@gmail.com> > --- > 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 ae6fa2d..02d9875 100644 > --- a/kernel/trace/trace.c > +++ b/kernel/trace/trace.c > @@ -5927,7 +5927,7 @@ init_tracer_debugfs(struct trace_array *tr, struct dentry *d_tracer) > trace_create_file("buffer_total_size_kb", 0444, d_tracer, > tr, &tracing_total_entries_fops); > > - trace_create_file("free_buffer", 0644, d_tracer, > + trace_create_file("free_buffer", 0200, d_tracer, > tr, &tracing_free_buffer_fops); > > trace_create_file("trace_marker", 0220, d_tracer,
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