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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-02-09 17:08:27 +0100 |
|---|---|---|
| committer | Scott Wood <oss@buserror.net> | 2016-03-12 00:20:12 +0100 |
| commit | affe587bacf48e328fb8d4c5ef9007b9c555b128 (patch) | |
| tree | a3d94f955c7ffdaa58310cb95daa28c63ac576cd /arch/powerpc/kernel/misc_32.S | |
| parent | powerpc32: Remove clear_pages() and define clear_page() inline (diff) | |
| download | linux-affe587bacf48e328fb8d4c5ef9007b9c555b128.tar.xz linux-affe587bacf48e328fb8d4c5ef9007b9c555b128.zip | |
powerpc32: move xxxxx_dcache_range() functions inline
flush/clean/invalidate _dcache_range() functions are all very
similar and are quite short. They are mainly used in __dma_sync()
perf_event locate them in the top 3 consumming functions during
heavy ethernet activity
They are good candidate for inlining, as __dma_sync() does
almost nothing but calling them
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/kernel/misc_32.S')
| -rw-r--r-- | arch/powerpc/kernel/misc_32.S | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 181afc1d05d8..09e1e5df0f34 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -375,71 +375,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) isync blr /* - * Write any modified data cache blocks out to memory. - * Does not invalidate the corresponding cache lines (especially for - * any corresponding instruction cache). - * - * clean_dcache_range(unsigned long start, unsigned long stop) - */ -_GLOBAL(clean_dcache_range) - li r5,L1_CACHE_BYTES-1 - andc r3,r3,r5 - subf r4,r3,r4 - add r4,r4,r5 - srwi. r4,r4,L1_CACHE_SHIFT - beqlr - mtctr r4 - -1: dcbst 0,r3 - addi r3,r3,L1_CACHE_BYTES - bdnz 1b - sync /* wait for dcbst's to get to ram */ - blr - -/* - * Write any modified data cache blocks out to memory and invalidate them. - * Does not invalidate the corresponding instruction cache blocks. - * - * flush_dcache_range(unsigned long start, unsigned long stop) - */ -_GLOBAL(flush_dcache_range) - li r5,L1_CACHE_BYTES-1 - andc r3,r3,r5 - subf r4,r3,r4 - add r4,r4,r5 - srwi. r4,r4,L1_CACHE_SHIFT - beqlr - mtctr r4 - -1: dcbf 0,r3 - addi r3,r3,L1_CACHE_BYTES - bdnz 1b - sync /* wait for dcbst's to get to ram */ - blr - -/* - * Like above, but invalidate the D-cache. This is used by the 8xx - * to invalidate the cache so the PPC core doesn't get stale data - * from the CPM (no cache snooping here :-). - * - * invalidate_dcache_range(unsigned long start, unsigned long stop) - */ -_GLOBAL(invalidate_dcache_range) - li r5,L1_CACHE_BYTES-1 - andc r3,r3,r5 - subf r4,r3,r4 - add r4,r4,r5 - srwi. r4,r4,L1_CACHE_SHIFT - beqlr - mtctr r4 - -1: dcbi 0,r3 - addi r3,r3,L1_CACHE_BYTES - bdnz 1b - sync /* wait for dcbi's to get to ram */ - blr - -/* * Flush a particular page from the data cache to RAM. * Note: this is necessary because the instruction cache does *not* * snoop from the data cache. |