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authorGlauber Costa <glommer@parallels.com>2012-10-19 18:20:27 +0400
committerPekka Enberg <penberg@kernel.org>2012-10-24 09:39:16 +0300
commit0d7561c61d76690ed84bd1016acc0fcbff063205 (patch)
tree90870a84e7568020921d01300e73cc607410ff47
parentbcee6e2a13d580f6c21d748fcd7239ccc66cb4b8 (diff)
sl[au]b: Process slabinfo_show in common code
With all the infrastructure in place, we can now have slabinfo_show done from slab_common.c. A cache-specific function is called to grab information about the cache itself, since that is still heavily dependent on the implementation. But with the values produced by it, all the printing and handling is done from common code. Signed-off-by: Glauber Costa <glommer@parallels.com> CC: Christoph Lameter <cl@linux.com> CC: David Rientjes <rientjes@google.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
-rw-r--r--mm/slab.c26
-rw-r--r--mm/slab.h16
-rw-r--r--mm/slab_common.c18
-rw-r--r--mm/slub.c24
4 files changed, 57 insertions, 27 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 73811ca0ae29..6d5c83c6ddd5 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -4276,9 +4276,8 @@ out:
}
#ifdef CONFIG_SLABINFO
-int slabinfo_show(struct seq_file *m, void *p)
+void get_slabinfo(struct kmem_cache *cachep, struct slabinfo *sinfo)
{
- struct kmem_cache *cachep = list_entry(p, struct kmem_cache, list);
struct slab *slabp;
unsigned long active_objs;
unsigned long num_objs;
@@ -4333,13 +4332,20 @@ int slabinfo_show(struct seq_file *m, void *p)
if (error)
printk(KERN_ERR "slab: cache %s error: %s\n", name, error);
- seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d",
- name, active_objs, num_objs, cachep->size,
- cachep->num, (1 << cachep->gfporder));
- seq_printf(m, " : tunables %4u %4u %4u",
- cachep->limit, cachep->batchcount, cachep->shared);
- seq_printf(m, " : slabdata %6lu %6lu %6lu",
- active_slabs, num_slabs, shared_avail);
+ sinfo->active_objs = active_objs;
+ sinfo->num_objs = num_objs;
+ sinfo->active_slabs = active_slabs;
+ sinfo->num_slabs = num_slabs;
+ sinfo->shared_avail = shared_avail;
+ sinfo->limit = cachep->limit;
+ sinfo->batchcount = cachep->batchcount;
+ sinfo->shared = cachep->shared;
+ sinfo->objects_per_slab = cachep->num;
+ sinfo->cache_order = cachep->gfporder;
+}
+
+void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep)
+{
#if STATS
{ /* list3 stats */
unsigned long high = cachep->high_mark;
@@ -4369,8 +4375,6 @@ int slabinfo_show(struct seq_file *m, void *p)
allochit, allocmiss, freehit, freemiss);
}
#endif
- seq_putc(m, '\n');
- return 0;
}
#define MAX_SLABINFO_WRITE 128
diff --git a/mm/slab.h b/mm/slab.h
index 3442eb83ee1e..5a43c2f13621 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -49,8 +49,22 @@ int __kmem_cache_shutdown(struct kmem_cache *);
struct seq_file;
struct file;
-int slabinfo_show(struct seq_file *m, void *p);
+struct slabinfo {
+ unsigned long active_objs;
+ unsigned long num_objs;
+ unsigned long active_slabs;
+ unsigned long num_slabs;
+ unsigned long shared_avail;
+ unsigned int limit;
+ unsigned int batchcount;
+ unsigned int shared;
+ unsigned int objects_per_slab;
+ unsigned int cache_order;
+};
+
+void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo);
+void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s);
ssize_t slabinfo_write(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos);
#endif
diff --git a/mm/slab_common.c b/mm/slab_common.c
index c64a0438c1f3..5fb753da6cf0 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -242,7 +242,23 @@ static void s_stop(struct seq_file *m, void *p)
static int s_show(struct seq_file *m, void *p)
{
- return slabinfo_show(m, p);
+ struct kmem_cache *s = list_entry(p, struct kmem_cache, list);
+ struct slabinfo sinfo;
+
+ memset(&sinfo, 0, sizeof(sinfo));
+ get_slabinfo(s, &sinfo);
+
+ seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d",
+ s->name, sinfo.active_objs, sinfo.num_objs, s->size,
+ sinfo.objects_per_slab, (1 << sinfo.cache_order));
+
+ seq_printf(m, " : tunables %4u %4u %4u",
+ sinfo.limit, sinfo.batchcount, sinfo.shared);
+ seq_printf(m, " : slabdata %6lu %6lu %6lu",
+ sinfo.active_slabs, sinfo.num_slabs, sinfo.shared_avail);
+ slabinfo_show_stats(m, s);
+ seq_putc(m, '\n');
+ return 0;
}
/*
diff --git a/mm/slub.c b/mm/slub.c
index 6b5ee3472e18..472e739278b4 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5405,18 +5405,14 @@ __initcall(slab_sysfs_init);
* The /proc/slabinfo ABI
*/
#ifdef CONFIG_SLABINFO
-int slabinfo_show(struct seq_file *m, void *p)
+void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo)
{
unsigned long nr_partials = 0;
unsigned long nr_slabs = 0;
- unsigned long nr_inuse = 0;
unsigned long nr_objs = 0;
unsigned long nr_free = 0;
- struct kmem_cache *s;
int node;
- s = list_entry(p, struct kmem_cache, list);
-
for_each_online_node(node) {
struct kmem_cache_node *n = get_node(s, node);
@@ -5429,16 +5425,16 @@ int slabinfo_show(struct seq_file *m, void *p)
nr_free += count_partial(n, count_free);
}
- nr_inuse = nr_objs - nr_free;
+ sinfo->active_objs = nr_objs - nr_free;
+ sinfo->num_objs = nr_objs;
+ sinfo->active_slabs = nr_slabs;
+ sinfo->num_slabs = nr_slabs;
+ sinfo->objects_per_slab = oo_objects(s->oo);
+ sinfo->cache_order = oo_order(s->oo);
+}
- seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d", s->name, nr_inuse,
- nr_objs, s->size, oo_objects(s->oo),
- (1 << oo_order(s->oo)));
- seq_printf(m, " : tunables %4u %4u %4u", 0, 0, 0);
- seq_printf(m, " : slabdata %6lu %6lu %6lu", nr_slabs, nr_slabs,
- 0UL);
- seq_putc(m, '\n');
- return 0;
+void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s)
+{
}
ssize_t slabinfo_write(struct file *file, const char __user *buffer,