From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Andrey Abramov <st5pub@yandex.ru>, vgupta <vgupta@synopsys.com>,
benh <benh@kernel.crashing.org>, paulus <paulus@samba.org>,
tglx <tglx@linutronix.de>, mingo <mingo@redhat.com>,
bp <bp@alien8.de>, hpa <hpa@zytor.com>, x86 <x86@kernel.org>,
mark <mark@fasheh.com>, jlbec <jlbec@evilplan.org>,
richard <richard@nod.at>, dedekind1 <dedekind1@gmail.com>,
adrian.hunter <adrian.hunter@intel.com>,
gregkh <gregkh@linuxfoundation.org>,
naveen.n.rao <naveen.n.rao@linux.vnet.ibm.com>,
jpoimboe <jpoimboe@redhat.com>,
Dave Chinner <dchinner@redhat.com>,
darrick.wong <darrick.wong@oracle.com>,
ard.biesheuvel <ard.biesheuvel@linaro.org>,
George Spelvin <lkml@sdf.org>,
linux-snps-arc <linux-snps-arc@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
ocfs2-devel <ocfs2-devel@oss.oracle.com>,
linux-mtd <linux-mtd@lists.infradead.org>,
sfr <sfr@canb.auug.org.au>
Cc: malat <malat@debian.org>,
"yamada.masahiro" <yamada.masahiro@socionext.com>,
npiggin <npiggin@gmail.com>
Subject: Re: [PATCH v3 2/5] powerpc: module_[32|64].c: replace swap function with built-in one
Date: Tue, 9 Jun 2020 15:58:30 +1000 (AEST) [thread overview]
Message-ID: <49gzvB1bJMz9sSy@ozlabs.org> (raw)
In-Reply-To: <994931554238042@iva8-b333b7f98ab0.qloud-c.yandex.net>
On Tue, 2019-04-02 at 20:47:22 UTC, Andrey Abramov wrote:
> Replace relaswap with built-in one, because relaswap
> does a simple byte to byte swap.
>
> Since Spectre mitigations have made indirect function calls more
> expensive, and the default simple byte copies swap is implemented
> without them, an "optimized" custom swap function is now
> a waste of time as well as code.
>
> Signed-off-by: Andrey Abramov <st5pub@yandex.ru>
> Reviewed by: George Spelvin <lkml@sdf.org>
> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/bac7ca7b985b72873bd4ac2553b13b5af5b1f08a
cheers
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next prev parent reply other threads:[~2020-06-09 5:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 20:41 [PATCH v3 0/5] simple sort swap function improvements Andrey Abramov
2019-04-02 20:45 ` [PATCH v3 1/5] arch/arc: unwind.c: replace swap function with built-in one Andrey Abramov
2019-04-02 20:47 ` [PATCH v3 2/5] powerpc: module_[32|64].c: " Andrey Abramov
2020-06-09 5:58 ` Michael Ellerman [this message]
2019-04-02 20:49 ` [PATCH v3 3/5] ocfs2: dir, refcounttree, xattr: replace swap functions " Andrey Abramov
2019-04-02 20:52 ` [PATCH v3 4/5] ubifs: find.c: replace swap function " Andrey Abramov
2019-04-02 20:55 ` [PATCH v3 5/5] Lib: sort.h: remove the size argument from the swap function Andrey Abramov
2019-04-03 11:33 ` Andy Shevchenko
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