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[PATCH] remove unused blkp field in percpu_data

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I found that blkp field was not used in kernel tree.

As most of the times NR_CPUS is a power of two and kmalloc() memory blocks
too, this extra field basically doubles the memory space allocated in
__alloc_percpu() to store the 'struct percpu_data'

(for example, if NR_CPUS=8 on i386, kmalloc(4*8+4) returns a 64 bytes block
instead of a 32 bytes block after this patch)

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Eric Dumazet 2006-01-08 01:03:40 -08:00 committed by Linus Torvalds
parent e78c9a004a
commit f867bac654
1 changed files with 0 additions and 1 deletions
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include/linux/percpu.h
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@ -19,7 +19,6 @@
struct percpu_data {
void *ptrs[NR_CPUS];
void *blkp;
};
/*