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Commit 5e980823 authored by Li Yang's avatar Li Yang Committed by Paul Mackerras
Browse files

[POWERPC] Fix rheap alignment problem 



Honor alignment parameter in the rheap allocator.  This is needed by
qe_lib.
Remove compile warning.

Signed-off-by: default avatarPantelis Antoniou <pantelis@embeddedalley.com>
Signed-off-by: default avatarLi Yang <leoli@freescale.com>
Acked-by: default avatarKumar Galak <galak@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 07bd1c4a

arch/powerpc/lib/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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)

arch/powerpc/lib/rheap.c

+20 −4
Original line number Diff line number Diff line
@@ -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)

include/asm-ppc/rheap.h

+4 −0
Original line number Diff line number Diff line
@@ -62,6 +62,10 @@ extern int rh_attach_region(rh_info_t * info, void *start, int size); 
/* Detach a free region */

extern void *rh_detach_region(rh_info_t * info, void *start, int size);



/* Allocate the given size from the remote heap (with alignment) */

extern void *rh_alloc_align(rh_info_t * info, int size, int alignment,

		const char *owner);



/* Allocate the given size from the remote heap */

extern void *rh_alloc(rh_info_t * info, int size, const char *owner);