linux-kernel - Re: [PATCH 0/2] locking/qspinlock: Break qspinlock

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Message-ID: <CAHp75Vde7nVV0RzELF7wtbRGVf3hhAKb-104F+VTMLoNj5sfvA@mail.gmail.com>
Date:   Thu, 30 Jul 2020 10:55:46 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     Vineet Gupta <vgupta@...opsys.com>,
        Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        Waiman Long <longman@...hat.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Petr Mladek <pmladek@...e.com>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>
Subject: Re: [PATCH 0/2] locking/qspinlock: Break qspinlock_types.h header loop

On Thu, Jul 30, 2020 at 10:51 AM Herbert Xu <herbert@...dor.apana.org.au> wrote:
> On Thu, Jul 30, 2020 at 10:47:16AM +0300, Andy Shevchenko wrote:
> >
> > We may ask Synopsys folks to look at this as well.
> > Vineet, any ideas if we may unify ATOMIC64_INIT() across the architectures?
>
> I don't think there is any technical difficulty.  The custom
> atomic64_t simply adds an alignment requirement so the initialisor
> remains the same.
>
> I just didn't want to add more complexity to the existing patch.
> As a follow-up patch it should be quite straightforward.

Ah, I see what you mean. I considered the follow up patch as well, I
thought there were some bigger impediments.

-- 
With Best Regards,
Andy Shevchenko