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bitmap: Define a cleanup function for bitmaps

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Add support for autopointers for bitmaps allocated with bitmap_alloc()
et al.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Yury Norov <yury.norov@gmail.com>
Link: https://lore.kernel.org/r/20240122124243.44002-2-brgl@bgdev.pl
This commit is contained in:
Bartosz Golaszewski 2024-01-22 13:42:40 +01:00 committed by Thomas Gleixner
parent 22653244a9
commit d12a82848e
1 changed files with 3 additions and 0 deletions
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3
include/linux/bitmap.h
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@ -6,6 +6,7 @@
#include <linux/align.h>
#include <linux/bitops.h>
#include <linux/cleanup.h>
#include <linux/errno.h>
#include <linux/find.h>
#include <linux/limits.h>
@ -127,6 +128,8 @@ unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node);
unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node);
void bitmap_free(const unsigned long *bitmap);
DEFINE_FREE(bitmap, unsigned long *, if (_T) bitmap_free(_T))
/* Managed variants of the above. */
unsigned long *devm_bitmap_alloc(struct device *dev,
unsigned int nbits, gfp_t flags);