2017-03-18 1:54 GMT+01:00 Laura Abbott labbott@redhat.com:
Frameworks (e.g. Ion) may want to iterate over each possible CMA area to allow for enumeration. Introduce a function to allow a callback.
even outside ION rework that could be useful
Reviewed-by: Benjamin Gaignard benjamin.gaignard@linaro.org
Signed-off-by: Laura Abbott labbott@redhat.com
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 0d187b1..9a040e1 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -498,3 +498,17 @@ 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