Commit e4231bcd authored by Laura Abbott's avatar Laura Abbott Committed by Greg Kroah-Hartman

cma: Introduce cma_for_each_area

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: default avatarLaura Abbott <labbott@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f318dd08
......@@ -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
......@@ -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;
}
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