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| author | Anton Blanchard <anton@samba.org> | 2011-05-08 21:18:38 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-19 14:30:42 +1000 |
| commit | d988f0e3f84cb8a4f85ccdbca6f6fefcc37bedcb (patch) | |
| tree | 60feffdec36d0a484b0d8d7d8dbdf5baf73aea7e | |
| parent | 37e0c21e9b5b6d6fd38a444762076c84c6170598 (diff) | |
| download | linux-d988f0e3f84cb8a4f85ccdbca6f6fefcc37bedcb.tar.gz linux-d988f0e3f84cb8a4f85ccdbca6f6fefcc37bedcb.tar.bz2 linux-d988f0e3f84cb8a4f85ccdbca6f6fefcc37bedcb.zip | |
powerpc: Simplify 4k/64k copy_page logic
To make it easier to add optimised versions of copy_page, remove
the 4kB loop for 64kB pages and just do all the work in copy_page.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/include/asm/page_64.h | 19 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ppc_ksyms.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/lib/copypage_64.S | 7 |
3 files changed, 6 insertions, 25 deletions
diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h index 488c52eb64cb..9356262fd3cc 100644 --- a/arch/powerpc/include/asm/page_64.h +++ b/arch/powerpc/include/asm/page_64.h @@ -59,24 +59,7 @@ static __inline__ void clear_page(void *addr) : "ctr", "memory"); } -extern void copy_4K_page(void *to, void *from); - -#ifdef CONFIG_PPC_64K_PAGES -static inline void copy_page(void *to, void *from) -{ - unsigned int i; - for (i=0; i < (1 << (PAGE_SHIFT - 12)); i++) { - copy_4K_page(to, from); - to += 4096; - from += 4096; - } -} -#else /* CONFIG_PPC_64K_PAGES */ -static inline void copy_page(void *to, void *from) -{ - copy_4K_page(to, from); -} -#endif /* CONFIG_PPC_64K_PAGES */ +extern void copy_page(void *to, void *from); /* Log 2 of page table size */ extern u64 ppc64_pft_size; diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index ef3ef566235e..7d28f540200c 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -54,7 +54,6 @@ extern void single_step_exception(struct pt_regs *regs); extern int sys_sigreturn(struct pt_regs *regs); EXPORT_SYMBOL(clear_pages); -EXPORT_SYMBOL(copy_page); EXPORT_SYMBOL(ISA_DMA_THRESHOLD); EXPORT_SYMBOL(DMA_MODE_READ); EXPORT_SYMBOL(DMA_MODE_WRITE); @@ -88,9 +87,7 @@ EXPORT_SYMBOL(__copy_tofrom_user); EXPORT_SYMBOL(__clear_user); EXPORT_SYMBOL(__strncpy_from_user); EXPORT_SYMBOL(__strnlen_user); -#ifdef CONFIG_PPC64 -EXPORT_SYMBOL(copy_4K_page); -#endif +EXPORT_SYMBOL(copy_page); #if defined(CONFIG_PCI) && defined(CONFIG_PPC32) EXPORT_SYMBOL(isa_io_base); diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S index 4d4eeb900486..53dcb6b1b708 100644 --- a/arch/powerpc/lib/copypage_64.S +++ b/arch/powerpc/lib/copypage_64.S @@ -6,6 +6,7 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ +#include <asm/page.h> #include <asm/processor.h> #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> @@ -15,9 +16,9 @@ PPC64_CACHES: .tc ppc64_caches[TC],ppc64_caches .section ".text" - -_GLOBAL(copy_4K_page) - li r5,4096 /* 4K page size */ +_GLOBAL(copy_page) + lis r5,PAGE_SIZE@h + ori r5,r5,PAGE_SIZE@l BEGIN_FTR_SECTION ld r10,PPC64_CACHES@toc(r2) lwz r11,DCACHEL1LOGLINESIZE(r10) /* log2 of cache line size */ |