AcoSail/kernel_optimize_test
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is_power_of_2: kernel/kfifo.c

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Replace (n & (n-1)) with is_power_of_2()

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Acked-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
vignesh babu 2007-07-15 23:41:34 -07:00 committed by Linus Torvalds
parent cf99abace7
commit f84d5a76c5
1 changed files with 2 additions and 1 deletions
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3
kernel/kfifo.c
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@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/kfifo.h>
#include <linux/log2.h>
/**
* kfifo_init - allocates a new FIFO using a preallocated buffer
@ -41,7 +42,7 @@ struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size,
struct kfifo *fifo;
/* size must be a power of 2 */
BUG_ON(size & (size - 1));
BUG_ON(!is_power_of_2(size));
fifo = kmalloc(sizeof(struct kfifo), gfp_mask);
if (!fifo)