On Sun, May 26, 2013 at 1:52 AM, Wang YanQing <[email protected]> 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 <[email protected]>
Acked-by: Vaibhav Nagarnaik <[email protected]> Vaibhav Nagarnaik > --- > 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, > -- > 1.7.12.4.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
