On Wed, 2 Oct 2019 18:35:26 +0200 Daniel Bristot de Oliveira <bris...@redhat.com> wrote:
> ftrace was already batching the updates, for instance, causing 3 IPIs to > enable > all functions. The text_poke() batching also works. But because of the limited > buffer [ see the reply to the patch 2/3 ], it is flushing the buffer during > the > operation, causing more IPIs than the previous code. Using the 5.4-rc1 in a > VM, > when enabling the function tracer, I see 250+ intermediate text_poke_finish() > because of a full buffer... Would you have any performance numbers of the previous code and applying this? Thank you, -- Masami Hiramatsu <mhira...@kernel.org>