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authorLaura Abbott <lauraa@codeaurora.org>2014-10-09 15:26:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-09 22:25:52 -0400
commit9efb3a421d55d30b65fb0dbee05108d15c6c55f7 (patch)
tree33cbfa3460617e1ae29ab0e239f9f427f83b4a11 /include/linux/genalloc.h
parent505e3be6c082489a32a88e042f930d047b6415bc (diff)
lib/genalloc.c: add genpool range check function
After allocating an address from a particular genpool, there is no good way to verify if that address actually belongs to a genpool. Introduce addr_in_gen_pool which will return if an address plus size falls completely within the genpool range. Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Acked-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Olof Johansson <olof@lixom.net> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Riley <davidriley@chromium.org> Cc: Ritesh Harjain <ritesh.harjani@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/genalloc.h')
-rw-r--r--include/linux/genalloc.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 3cd0934d62ba..1ccaab44abcc 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -121,6 +121,9 @@ extern struct gen_pool *devm_gen_pool_create(struct device *dev,
int min_alloc_order, int nid);
extern struct gen_pool *dev_get_gen_pool(struct device *dev);
+bool addr_in_gen_pool(struct gen_pool *pool, unsigned long start,
+ size_t size);
+
#ifdef CONFIG_OF
extern struct gen_pool *of_get_named_gen_pool(struct device_node *np,
const char *propname, int index);