powerpc: Move the testing of CPU_FTR_COHERENT_ICACHE into __flush_icache_range

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In function flush_icache_range(), we use cpu_has_feature() to test
the feature bit of CPU_FTR_COHERENT_ICACHE. But this seems not optimal
for two reasons:
 a) For ppc32, the function __flush_icache_range() already do this
    check with the macro END_FTR_SECTION_IFSET.
 b) Compare with the cpu_has_feature(), the method of using macro
    END_FTR_SECTION_IFSET will not introduce any runtime overhead.

[And while at it, add the missing required isync] -- BenH

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Kevin Hao 2013-08-06 18:23:30 +08:00 • committed by Benjamin Herrenschmidt

parent f13c13a005

commit abb29c3bb1

3 changed files with 5 additions and 3 deletions

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3

arch/powerpc/include/asm/cacheflush.h

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1

arch/powerpc/kernel/misc_32.S

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4

arch/powerpc/kernel/misc_64.S

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