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authorLaura Abbott <labbott@redhat.com>2017-04-18 11:27:04 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-18 20:41:12 +0200
commite4231bcda72daef497af45e195a33daa0f9357d0 (patch)
treeb07421594e284d0c33e310d43d857fc67aeb8c88 /mm/cma.c
parentf318dd083c8128c50e48ceb8c3e812e52800fc4f (diff)
downloadlinux-stericsson-e4231bcda72daef497af45e195a33daa0f9357d0.tar.gz
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: Laura Abbott <labbott@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/cma.c')
-rw-r--r--mm/cma.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/mm/cma.c b/mm/cma.c
index 43c1b2c1ac67..978b4a1441ef 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;
+}