The patch titled
slub: enable tracking of full slabs
has been removed from the -mm tree. Its filename was
slub-enable-tracking-of-full-slabs.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: slub: enable tracking of full slabs
From: Christoph Lameter <clameter@xxxxxxx>
If slab tracking is on then build a list of full slabs so that we can verify
the integrity of all slabs and are also able to built list of alloc/free
callers.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/slub_def.h | 1
mm/slub.c | 41 ++++++++++++++++++++++++++++++++++++-
2 files changed, 41 insertions(+), 1 deletion(-)
diff -puN include/linux/slub_def.h~slub-enable-tracking-of-full-slabs include/linux/slub_def.h
--- a/include/linux/slub_def.h~slub-enable-tracking-of-full-slabs
+++ a/include/linux/slub_def.h
@@ -16,6 +16,7 @@ struct kmem_cache_node {
unsigned long nr_partial;
atomic_long_t nr_slabs;
struct list_head partial;
+ struct list_head full;
};
/*
diff -puN mm/slub.c~slub-enable-tracking-of-full-slabs mm/slub.c
--- a/mm/slub.c~slub-enable-tracking-of-full-slabs
+++ a/mm/slub.c
@@ -661,6 +661,40 @@ static int on_freelist(struct kmem_cache
return search == NULL;
}
+/*
+ * Tracking of fully allocated slabs for debugging
+ */
+static void add_full(struct kmem_cache *s, struct page *page)
+{
+ struct kmem_cache_node *n;
+
+ VM_BUG_ON(!irqs_disabled());
+
+ VM_BUG_ON(!irqs_disabled());
+
+ if (!(s->flags & SLAB_STORE_USER))
+ return;
+
+ n = get_node(s, page_to_nid(page));
+ spin_lock(&n->list_lock);
+ list_add(&page->lru, &n->full);
+ spin_unlock(&n->list_lock);
+}
+
+static void remove_full(struct kmem_cache *s, struct page *page)
+{
+ struct kmem_cache_node *n;
+
+ if (!(s->flags & SLAB_STORE_USER))
+ return;
+
+ n = get_node(s, page_to_nid(page));
+
+ spin_lock(&n->list_lock);
+ list_del(&page->lru);
+ spin_unlock(&n->list_lock);
+}
+
static int alloc_object_checks(struct kmem_cache *s, struct page *page,
void *object)
{
@@ -1090,6 +1124,8 @@ static void putback_slab(struct kmem_cac
if (page->inuse) {
if (page->freelist)
add_partial(s, page);
+ else if (PageError(page))
+ add_full(s, page);
slab_unlock(page);
} else {
slab_unlock(page);
@@ -1302,7 +1338,7 @@ out_unlock:
slab_empty:
if (prior)
/*
- * Partially used slab that is on the partial list.
+ * Slab on the partial list.
*/
remove_partial(s, page);
@@ -1314,6 +1350,8 @@ slab_empty:
debug:
if (!free_object_checks(s, page, x))
goto out_unlock;
+ if (!PageActive(page) && !page->freelist)
+ remove_full(s, page);
if (s->flags & SLAB_STORE_USER)
set_track(s, x, TRACK_FREE, addr);
goto checks_ok;
@@ -1466,6 +1504,7 @@ static void init_kmem_cache_node(struct
atomic_long_set(&n->nr_slabs, 0);
spin_lock_init(&n->list_lock);
INIT_LIST_HEAD(&n->partial);
+ INIT_LIST_HEAD(&n->full);
}
#ifdef CONFIG_NUMA
_
Patches currently in -mm which might be from clameter@xxxxxxx are
origin.patch
quicklist-support-for-ia64.patch
quicklist-support-for-x86_64.patch
slub-exploit-page-mobility-to-increase-allocation-order.patch
slub-mm-only-make-slub-the-default-slab-allocator.patch
slub-i386-support.patch
remove-constructor-from-buffer_head.patch
slab-shutdown-cache_reaper-when-cpu-goes-down.patch
mm-implement-swap-prefetching.patch
revoke-core-code-slab-allocators-remove-slab_debug_initial-flag-revoke.patch
vmstat-use-our-own-timer-events.patch
make-vm-statistics-update-interval-configurable.patch
make-vm-statistics-update-interval-configurable-fix.patch
readahead-state-based-method-aging-accounting.patch
-
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