slub: register slabinfo to procfs
We need to register slabinfo to procfs when CONFIG_SLUB is enabled to
make the file actually visible to user-space.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index e0d064e..a11968b 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -451,6 +451,20 @@
#endif
#endif
+#ifdef CONFIG_SLUB
+static int slabinfo_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &slabinfo_op);
+}
+
+static const struct file_operations proc_slabinfo_operations = {
+ .open = slabinfo_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+#endif
+
static int show_stat(struct seq_file *p, void *v)
{
int i;
@@ -734,6 +748,9 @@
create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
#endif
#endif
+#ifdef CONFIG_SLUB
+ create_seq_entry("slabinfo", S_IWUSR|S_IRUGO, &proc_slabinfo_operations);
+#endif
create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
create_seq_entry("pagetypeinfo", S_IRUGO, &pagetypeinfo_file_ops);
create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);