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-rw-r--r--lib/bitmap.c42
-rw-r--r--lib/cmdline.c1
2 files changed, 39 insertions, 4 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 9f4626a4c95f..74ceb02f45e3 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -3,17 +3,19 @@
* lib/bitmap.c
* Helper functions for bitmap.h.
*/
-#include <linux/export.h>
-#include <linux/thread_info.h>
-#include <linux/ctype.h>
-#include <linux/errno.h>
+
#include <linux/bitmap.h>
#include <linux/bitops.h>
#include <linux/bug.h>
+#include <linux/ctype.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/string.h>
+#include <linux/thread_info.h>
#include <linux/uaccess.h>
#include <asm/page.h>
@@ -1271,6 +1273,38 @@ void bitmap_free(const unsigned long *bitmap)
}
EXPORT_SYMBOL(bitmap_free);
+static void devm_bitmap_free(void *data)
+{
+ unsigned long *bitmap = data;
+
+ bitmap_free(bitmap);
+}
+
+unsigned long *devm_bitmap_alloc(struct device *dev,
+ unsigned int nbits, gfp_t flags)
+{
+ unsigned long *bitmap;
+ int ret;
+
+ bitmap = bitmap_alloc(nbits, flags);
+ if (!bitmap)
+ return NULL;
+
+ ret = devm_add_action_or_reset(dev, devm_bitmap_free, bitmap);
+ if (ret)
+ return NULL;
+
+ return bitmap;
+}
+EXPORT_SYMBOL_GPL(devm_bitmap_alloc);
+
+unsigned long *devm_bitmap_zalloc(struct device *dev,
+ unsigned int nbits, gfp_t flags)
+{
+ return devm_bitmap_alloc(dev, nbits, flags | __GFP_ZERO);
+}
+EXPORT_SYMBOL_GPL(devm_bitmap_zalloc);
+
#if BITS_PER_LONG == 64
/**
* bitmap_from_arr32 - copy the contents of u32 array of bits to bitmap
diff --git a/lib/cmdline.c b/lib/cmdline.c
index 5d474c626e24..5546bf588780 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -272,3 +272,4 @@ char *next_arg(char *args, char **param, char **val)
/* Chew up trailing spaces. */
return skip_spaces(args);
}
+EXPORT_SYMBOL(next_arg);