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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2018-02-22 15:27:22 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-06 09:21:22 +1100 |
| commit | a3286f05bc5a5bc7fc73a9783ec89de78fcd07f8 (patch) | |
| tree | 388e2ad06d47bb6b975896667cf991989db1be89 /arch/powerpc/include/asm/slice.h | |
| parent | 326691ad4f179e6edc7eb1271e618dd673e4736d (diff) | |
| download | linux-a3286f05bc5a5bc7fc73a9783ec89de78fcd07f8.tar.bz2 | |
powerpc/mm/slice: create header files dedicated to slices
In preparation for the following patch which will enhance 'slices'
for supporting PPC32 in order to fix an issue on hugepages on 8xx,
this patch takes out of page*.h all bits related to 'slices' and put
them into newly created slice.h header files.
While common parts go into asm/slice.h, subarch specific
parts go into respective books3s/64/slice.c and nohash/64/slice.c
'slices'
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/slice.h')
| -rw-r--r-- | arch/powerpc/include/asm/slice.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/slice.h b/arch/powerpc/include/asm/slice.h new file mode 100644 index 000000000000..17c5a5d8c418 --- /dev/null +++ b/arch/powerpc/include/asm/slice.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_POWERPC_SLICE_H +#define _ASM_POWERPC_SLICE_H + +#ifdef CONFIG_PPC_BOOK3S_64 +#include <asm/book3s/64/slice.h> +#else +#include <asm/nohash/64/slice.h> +#endif + +#ifdef CONFIG_PPC_MM_SLICES + +#ifdef CONFIG_HUGETLB_PAGE +#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA +#endif +#define HAVE_ARCH_UNMAPPED_AREA +#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN + +#ifndef __ASSEMBLY__ + +struct mm_struct; + +unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len, + unsigned long flags, unsigned int psize, + int topdown); + +unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr); + +void slice_set_user_psize(struct mm_struct *mm, unsigned int psize); +void slice_set_range_psize(struct mm_struct *mm, unsigned long start, + unsigned long len, unsigned int psize); +#endif /* __ASSEMBLY__ */ + +#else /* CONFIG_PPC_MM_SLICES */ + +#define slice_set_range_psize(mm, start, len, psize) \ + slice_set_user_psize((mm), (psize)) +#endif /* CONFIG_PPC_MM_SLICES */ + +#endif /* _ASM_POWERPC_SLICE_H */ |