diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-02-09 17:08:25 +0100 |
|---|---|---|
| committer | Scott Wood <oss@buserror.net> | 2016-03-12 00:20:11 +0100 |
| commit | 5736f96d12dd4204d3aac43bf7b512ab434b904f (patch) | |
| tree | 396af6f695328a3ab83feecb6b424c8c09616aa3 /arch/powerpc/kernel | |
| parent | powerpc: add inline functions for cache related instructions (diff) | |
| download | linux-5736f96d12dd4204d3aac43bf7b512ab434b904f.tar.xz linux-5736f96d12dd4204d3aac43bf7b512ab434b904f.zip | |
powerpc32: Remove clear_pages() and define clear_page() inline
clear_pages() is never used expect by clear_page, and PPC32 is the
only architecture (still) having this function. Neither PPC64 nor
any other architecture has it.
This patch removes clear_pages() and moves clear_page() function
inline (same as PPC64) as it only is a few isns
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/misc_32.S | 16 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ppc_ksyms_32.c | 1 |
2 files changed, 0 insertions, 17 deletions
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 7d1284f4d89e..181afc1d05d8 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -517,22 +517,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) #endif /* CONFIG_BOOKE */ /* - * Clear pages using the dcbz instruction, which doesn't cause any - * memory traffic (except to write out any cache lines which get - * displaced). This only works on cacheable memory. - * - * void clear_pages(void *page, int order) ; - */ -_GLOBAL(clear_pages) - li r0,PAGE_SIZE/L1_CACHE_BYTES - slw r0,r0,r4 - mtctr r0 -1: dcbz 0,r3 - addi r3,r3,L1_CACHE_BYTES - bdnz 1b - blr - -/* * Copy a whole page. We use the dcbz instruction on the destination * to reduce memory traffic (it eliminates the unnecessary reads of * the destination into cache). This requires that the destination diff --git a/arch/powerpc/kernel/ppc_ksyms_32.c b/arch/powerpc/kernel/ppc_ksyms_32.c index 30ddd8a24eee..2bfaafe5be99 100644 --- a/arch/powerpc/kernel/ppc_ksyms_32.c +++ b/arch/powerpc/kernel/ppc_ksyms_32.c @@ -10,7 +10,6 @@ #include <asm/pgtable.h> #include <asm/dcr.h> -EXPORT_SYMBOL(clear_pages); EXPORT_SYMBOL(ISA_DMA_THRESHOLD); EXPORT_SYMBOL(DMA_MODE_READ); EXPORT_SYMBOL(DMA_MODE_WRITE); |