linux-kernel - Re: [PATCH] tracing: Disable branch profiling in noinstr code

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Message-ID: <g4rdlv4it35nlftf6uyaewe4b52buho6pvnamjmwd2iu5cq5q2@xh4uluvgaqvn>
Date: Fri, 21 Mar 2025 10:21:34 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org, 
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>, 
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] tracing: Disable branch profiling in noinstr code

On Fri, Mar 21, 2025 at 01:12:48PM -0400, Steven Rostedt wrote:
> On Fri, 21 Mar 2025 17:51:50 +0100
> Thomas Gleixner <tglx@...utronix.de> wrote:
> 
> > Though the real fix would be to rip out this likely/unlikely tracer
> > hackery all together.
> 
> If you want, you could just disable it for all of arch/x86

I *basically* did that, albeit in more of a surgical manner by editing a
lot of the makefiles in arch/x86/*/.

Let me see if I can figure out how to do that more broadly at the
arch/x86 level.

-- 
Josh