Messages in this thread | | | From | Christophe Leroy <> | Subject | [PATCH v4 0/2] powerpc32: memcpy/memset: only use dcbz once cache is enabled | Date | Wed, 16 Sep 2015 12:04:48 +0200 (CEST) |
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memcpy() and memset() use instruction dcbz to speed up copy by not wasting time loading cache lines with data that will be overwritten. Some platform like mpc52xx do no have cache active at startup and can therefore not use memcpy(). Allthough no part of the code explicitly uses memcpy() and memset(), GCC makes calls to them.
Christophe Leroy (2): powerpc32: memcpy: only use dcbz once cache is enabled powerpc32: memset: only use dcbz once cache is enabled
arch/powerpc/kernel/setup_32.c | 6 ++++++ arch/powerpc/lib/copy_32.S | 11 +++++++++++ 2 files changed, 17 insertions(+)
-- 2.1.0
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