linux-kernel - [PATCH v2 0/6] powerpc32: replace memcpy and memset by cacheable alternatives

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Message-Id: <cover.1432012060.git.christophe.leroy@c-s.fr>
Date:	Tue, 19 May 2015 12:07:44 +0200 (CEST)
From:	Christophe Leroy <christophe.leroy@....fr>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>, scottwood@...escale.com
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
Subject: [PATCH v2 0/6] powerpc32: replace memcpy and memset by cacheable alternatives

This patchset implements use of cacheable versions of memset and
memcpy since when the destination is not cacheable, memset_io
and memcpy_toio are used.

On MPC885, we observe a 7% rate increase on FTP transfer

Christophe Leroy (6):
  powerpc: use memset_io() to clear CPM Muram
  Partially revert "powerpc: Remove duplicate cacheable_memcpy/memzero
    functions"
  powerpc32: memset(0): use cacheable_memzero
  powerpc32: Merge the new memset() with the old one
  powerpc32: cacheable_memcpy becomes memcpy
  powerpc32: Few optimisations in memcpy

 arch/powerpc/lib/copy_32.S       | 109 ++++++++++++++++++++++++++++++++++++++-
 arch/powerpc/sysdev/cpm_common.c |   2 +-
 2 files changed, 109 insertions(+), 2 deletions(-)

-- 
2.1.0

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