linux-kernel - Re: [Intel-gfx] [PATCH v5 0/7] Introduce _

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Message-ID: <Y/y0/VoPAVCXGKp3@hirez.programming.kicks-ass.net>
Date:   Mon, 27 Feb 2023 14:49:49 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Andrzej Hajda <andrzej.hajda@...el.com>
Cc:     Mark Rutland <mark.rutland@....com>, linux-ia64@...r.kernel.org,
        linux-sh@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-mips@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-hexagon@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        Boqun Feng <boqun.feng@...il.com>,
        linux-xtensa@...ux-xtensa.org, Arnd Bergmann <arnd@...db.de>,
        intel-gfx@...ts.freedesktop.org, linux-m68k@...ts.linux-m68k.org,
        openrisc@...ts.librecores.org, loongarch@...ts.linux.dev,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-arm-kernel@...ts.infradead.org, linux-parisc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-alpha@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [Intel-gfx] [PATCH v5 0/7] Introduce __xchg, non-atomic xchg

On Thu, Feb 23, 2023 at 10:24:19PM +0100, Andrzej Hajda wrote:
> On 22.02.2023 18:04, Peter Zijlstra wrote:
> > On Wed, Jan 18, 2023 at 04:35:22PM +0100, Andrzej Hajda wrote:
> > 
> > > Andrzej Hajda (7):
> > >    arch: rename all internal names __xchg to __arch_xchg
> > >    linux/include: add non-atomic version of xchg
> > >    arch/*/uprobes: simplify arch_uretprobe_hijack_return_addr
> > >    llist: simplify __llist_del_all
> > >    io_uring: use __xchg if possible
> > >    qed: use __xchg if possible
> > >    drm/i915/gt: use __xchg instead of internal helper
> > 
> > Nothing crazy in here I suppose, I somewhat wonder why you went through
> > the trouble, but meh.
> 
> If you are asking why I have proposed this patchset, then the answer is
> simple, 1st I've tried to find a way to move internal i915 helper to core
> (see patch 7).
> Then I was looking for possible other users of this helper. And apparently
> there are many of them, patches 3-7 shows some.
> 
> 
> > 
> > You want me to take this through te locking tree (for the next cycle,
> > not this one) where I normally take atomic things or does someone else
> > want this?
> 
> If you could take it I will be happy.

OK, I'll go queue it in tip/locking/core after -rc1. Thanks!