Create an ops field in /sys/slab/*/ops to contain all the callback operations defined for a slab cache. This will be used to display the additional callbacks that will be defined soon to enable defragmentation. Display the existing ctor callback in the ops fields contents. Signed-off-by: Christoph Lameter --- mm/slub.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) Index: linux/mm/slub.c =================================================================== --- linux.orig/mm/slub.c +++ linux/mm/slub.c @@ -4994,13 +4994,18 @@ static ssize_t cpu_partial_store(struct } SLAB_ATTR(cpu_partial); -static ssize_t ctor_show(struct kmem_cache *s, char *buf) +static ssize_t ops_show(struct kmem_cache *s, char *buf) { + int x = 0; + if (!s->ctor) return 0; - return sprintf(buf, "%pS\n", s->ctor); + + if (s->ctor) + x += sprintf(buf + x, "ctor : %pS\n", s->ctor); + return x; } -SLAB_ATTR_RO(ctor); +SLAB_ATTR_RO(ops); static ssize_t aliases_show(struct kmem_cache *s, char *buf) { @@ -5413,7 +5418,7 @@ static struct attribute *slab_attrs[] = &objects_partial_attr.attr, &partial_attr.attr, &cpu_slabs_attr.attr, - &ctor_attr.attr, + &ops_attr.attr, &aliases_attr.attr, &align_attr.attr, &hwcache_align_attr.attr,