linux-kernel - Re: [PATCH v4 0/4] unwind

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Message-ID: <20251208193605.GG3707891@noisy.programming.kicks-ass.net>
Date: Mon, 8 Dec 2025 20:36:05 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Jens Remus <jremus@...ux.ibm.com>
Cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
	x86@...nel.org, Steven Rostedt <rostedt@...nel.org>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Indu Bhagat <indu.bhagat@...cle.com>,
	"Jose E. Marchesi" <jemarch@....org>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>,
	Ilya Leoshkevich <iii@...ux.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v4 0/4] unwind_user: Cleanups

On Mon, Dec 08, 2025 at 05:03:48PM +0100, Jens Remus wrote:
> This patch series applies on top of Peter Zijlstras' latest unwind user
> enhancements (and perf deferred callchain support) on his tip perf/core
> branch:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
> 
> Which has already been merged to tip/master and linux-next/master.

Right, that should be empty now :-)


> Jens Remus (4):
>   unwind_user: Enhance comments on get CFA, FP, and RA
>   unwind_user/fp: Use dummies instead of ifdef
>   x86/unwind_user: Guard unwind_user_word_size() by UNWIND_USER
>   x86/unwind_user: Simplify unwind_user_word_size()
> 
>  arch/x86/include/asm/unwind_user.h | 27 ++++++++++++++-------------
>  include/linux/unwind_user.h        | 18 ++++++++++++++++--
>  kernel/unwind/user.c               | 12 ++++--------
>  3 files changed, 34 insertions(+), 23 deletions(-)

I'll go stick these patches in tip/perf/core after rc1 or so, no real
hurry with these, right?