On Fri, 10 Mar 2023 10:52:08 -0700 zwisler@xxxxxxxxxx wrote: > From: Ross Zwisler <zwisler@xxxxxxxxxx> > > The canonical location for the tracefs filesystem is at /sys/kernel/tracing. > > But, from Documentation/trace/ftrace.rst: > > Before 4.1, all ftrace tracing control files were within the debugfs > file system, which is typically located at /sys/kernel/debug/tracing. > For backward compatibility, when mounting the debugfs file system, > the tracefs file system will be automatically mounted at: > > /sys/kernel/debug/tracing > > Many comments and samples in the bpf code still refer to this older > debugfs path, so let's update them to avoid confusion. There are a few > spots where the bpf code explicitly checks both tracefs and debugfs > (tools/bpf/bpftool/tracelog.c and tools/lib/api/fs/fs.c) and I've left > those alone so that the tools can continue to work with both paths. > > Signed-off-by: Ross Zwisler <zwisler@xxxxxxxxxx> > Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx> Reviewed-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> -- Steve
