From: Andrew Morton <akpm@linux-foundation.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Stafford Horne <shorne@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Kees Cook <keescook@chromium.org>, Jessica Yu <jeyu@redhat.com>,
Petr Mladek <pmladek@suse.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Yang Shi <yang.shi@linaro.org>, Tejun Heo <tj@kernel.org>,
Prarit Bhargava <prarit@redhat.com>,
Yaowei Bai <baiyaowei@cmss.chinamobile.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>
Subject: Re: [PATCH -next] init/main: Init jump_labels before they are used to build zonelists
Date: Tue, 17 Jan 2017 12:34:16 -0800 [thread overview]
Message-ID: <20170117123416.6d0caf7544a3508d368ecea1@linux-foundation.org> (raw)
In-Reply-To: <8c4e1c37-1a8e-9e5e-c276-f7bd3cfb248b@suse.cz>
> >
> > Will you be able to look into that? Openrisc doesnt have jump_label
> > support, so its no issue at the moment.
> >
> > Archs that do have it:
> >
> > arch/arm64/Kconfig: select HAVE_ARCH_JUMP_LABEL
> > arch/mips/Kconfig: select HAVE_ARCH_JUMP_LABEL
> > arch/s390/Kconfig: select HAVE_ARCH_JUMP_LABEL
> > arch/sparc/Kconfig: select HAVE_ARCH_JUMP_LABEL if SPARC64
> > arch/tile/Kconfig: select HAVE_ARCH_JUMP_LABEL
> > arch/x86/Kconfig: select HAVE_ARCH_JUMP_LABEL
> > arch/arm/Kconfig: select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
> > arch/powerpc/Kconfig: select HAVE_ARCH_JUMP_LABEL
> >
> > I looked at a few (arm, tile) and I dont see their arch_jump_label_transform*
> > implementations depending on global state like ideal_nops from x86. They
> > should be ok.
>
> Thanks, I'll try.
>
> > If no time, Should you change your patch to not use static keys for
> > build_all_zonelists at least?
>
> Yes that would be uglier but possible if I find issues or I'm not
> confident enough with the auditing...
We could just revert f5adbdff6a1c40e19 ("mm, page_alloc: convert
page_group_by_mobility_disable to static key")?
next prev parent reply other threads:[~2017-01-17 20:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-17 12:56 [PATCH -next] init/main: Init jump_labels before they are used to build zonelists Stafford Horne
2017-01-17 13:07 ` Vlastimil Babka
2017-01-17 13:44 ` Peter Zijlstra
2017-01-17 14:30 ` Stafford Horne
2017-01-17 16:11 ` Vlastimil Babka
2017-01-17 20:34 ` Andrew Morton [this message]
2017-01-17 20:49 ` Vlastimil Babka
2017-01-19 8:28 ` Vlastimil Babka
2017-01-19 9:56 ` Mel Gorman
2017-01-23 5:54 ` Michael Ellerman
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