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| author | Kevin Hao <haokexin@gmail.com> | 2013-08-06 14:23:30 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-08-14 08:56:06 +0400 |
| commit | abb29c3bb13c7b747fae18b9c63b660529ccc612 (patch) | |
| tree | 7db47abfcb4fd1ed18fc8942aeffed6ce176e0e5 /arch/powerpc/kernel/misc_64.S | |
| parent | f13c13a005127b5dc5daaca190277a062d946e63 (diff) | |
| download | linux-abb29c3bb13c7b747fae18b9c63b660529ccc612.tar.xz | |
powerpc: Move the testing of CPU_FTR_COHERENT_ICACHE into __flush_icache_range
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>
Diffstat (limited to 'arch/powerpc/kernel/misc_64.S')
| -rw-r--r-- | arch/powerpc/kernel/misc_64.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index 6820e45f557b..74d87f117566 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -68,7 +68,9 @@ PPC64_CACHES: */ _KPROBE(__flush_icache_range) - +BEGIN_FTR_SECTION + blr +END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) /* * Flush the data cache to memory * |