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| author | Li Yang <leoli@freescale.com> | 2006-09-29 18:15:52 +0800 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-10-02 20:27:47 +1000 |
| commit | 5e980823581682d1566e7b5089cf827ddd5f3c94 (patch) | |
| tree | 62cb2475517700805ac473ea3f1752ff9eb6bed6 /arch/powerpc | |
| parent | 07bd1c4a82d1787d6acc32b5e3873cca24f39769 (diff) | |
| download | linux-5e980823581682d1566e7b5089cf827ddd5f3c94.tar.gz | |
[POWERPC] Fix rheap alignment problem
Honor alignment parameter in the rheap allocator. This is needed by qe_lib. Remove compile warning. Signed-off-by: Pantelis Antoniou <pantelis@embeddedalley.com> Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Kumar Galak <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/lib/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/lib/rheap.c | 24 |
2 files changed, 21 insertions, 4 deletions
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index 8030f6245d82..a0360ae10d0c 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -14,6 +14,7 @@ endif obj-$(CONFIG_PPC64) += checksum_64.o copypage_64.o copyuser_64.o \ memcpy_64.o usercopy_64.o mem_64.o string.o \ strcase.o +obj-$(CONFIG_QUICC_ENGINE) += rheap.o obj-$(CONFIG_XMON) += sstep.o ifeq ($(CONFIG_PPC64),y) diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c index 31e511856dc5..57bf991ccd6e 100644 --- a/arch/powerpc/lib/rheap.c +++ b/arch/powerpc/lib/rheap.c @@ -423,17 +423,21 @@ void *rh_detach_region(rh_info_t * info, void *start, int size) return (void *)s; } -void *rh_alloc(rh_info_t * info, int size, const char *owner) +void *rh_alloc_align(rh_info_t * info, int size, int alignment, const char *owner) { struct list_head *l; rh_block_t *blk; rh_block_t *newblk; void *start; - /* Validate size */ - if (size <= 0) + /* Validate size, (must be power of two) */ + if (size <= 0 || (alignment & (alignment - 1)) != 0) return ERR_PTR(-EINVAL); + /* given alignment larger that default rheap alignment */ + if (alignment > info->alignment) + size += alignment - 1; + /* Align to configured alignment */ size = (size + (info->alignment - 1)) & ~(info->alignment - 1); @@ -476,15 +480,27 @@ void *rh_alloc(rh_info_t * info, int size, const char *owner) attach_taken_block(info, newblk); + /* for larger alignment return fixed up pointer */ + /* this is no problem with the deallocator since */ + /* we scan for pointers that lie in the blocks */ + if (alignment > info->alignment) + start = (void *)(((unsigned long)start + alignment - 1) & + ~(alignment - 1)); + return start; } +void *rh_alloc(rh_info_t * info, int size, const char *owner) +{ + return rh_alloc_align(info, size, info->alignment, owner); +} + /* allocate at precisely the given address */ void *rh_alloc_fixed(rh_info_t * info, void *start, int size, const char *owner) { struct list_head *l; rh_block_t *blk, *newblk1, *newblk2; - unsigned long s, e, m, bs, be; + unsigned long s, e, m, bs = 0, be = 0; /* Validate size */ if (size <= 0) |