Frameworks (e.g. Ion) may want to iterate over each possible CMA area to allow for enumeration. Introduce a function to allow a callback. Signed-off-by: Laura Abbott <labbott@xxxxxxxxxx> --- include/linux/cma.h | 2 ++ mm/cma.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/linux/cma.h b/include/linux/cma.h index d41d1f8..3e8fbf5 100644 --- a/include/linux/cma.h +++ b/include/linux/cma.h @@ -34,4 +34,6 @@ extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align, gfp_t gfp_mask); extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count); + +extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data); #endif diff --git a/mm/cma.c b/mm/cma.c index 43c1b2c..978b4a1 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -504,3 +504,17 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count) return true; } + +int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data) +{ + int i; + + for (i = 0; i < cma_area_count; i++) { + int ret = it(&cma_areas[i], data); + + if (ret) + return ret; + } + + return 0; +} -- 2.7.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>