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kobject: Constify struct kset_uevent_ops

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Constify struct kset_uevent_ops.

This is part of the ops structure constification
effort started by Arjan van de Ven et al.

Benefits of this constification:

 * prevents modification of data that is shared
   (referenced) by many other structure instances
   at runtime

 * detects/prevents accidental (but not intentional)
   modification attempts on archs that enforce
   read-only kernel data at runtime

 * potentially better optimized code as the compiler
   can assume that the const data cannot be changed

 * the compiler/linker move const data into .rodata
   and therefore exclude them from false sharing

Signed-off-by: Emese Revfy <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Emese Revfy 2009-12-31 14:52:51 +01:00 • committed by Greg Kroah-Hartman
commit 9cd43611cc
9 changed files with 14 additions and 14 deletions
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2
mm/slub.c
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@ -4409,7 +4409,7 @@ static int uevent_filter(struct kset *kset, struct kobject *kobj)
return 0;
}
static struct kset_uevent_ops slab_uevent_ops = {
static const struct kset_uevent_ops slab_uevent_ops = {
.filter = uevent_filter,
};