Re: [PATCH 3/3] x86/ftrace: Use text_poke()

From: Peter Zijlstra
Date: Fri Oct 04 2019 - 07:23:05 EST


On Thu, Oct 03, 2019 at 06:10:45PM -0400, Steven Rostedt wrote:
> But still, we are going from 120 to 660 IPIs for every CPU. Not saying
> it's a problem, but something that we should note. Someone (those that
> don't like kernel interference) may complain.

It is machine wide function tracing, interference is going to happen..
:-)

Anyway, we can grow the batch size if sufficient benefit can be shown to
exist.