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authorAlexey Dobriyan <adobriyan@gmail.com>2008-10-06 00:59:10 +0400
committerAlexey Dobriyan <adobriyan@gmail.com>2008-10-23 15:17:27 +0400
commita0ec95a8e69792e4ad642daac037c9b01ea3e2cd (patch)
treeec8f483871151c152c198b605ab7ebd6046271b8 /mm
parentd6917e19f3fda8e1f88bc23ddceed952927bd716 (diff)
downloadconfigs-a0ec95a8e69792e4ad642daac037c9b01ea3e2cd.tar.gz
proc: move /proc/slab_allocators boilerplate to mm/slab.c
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'mm')
-rw-r--r--mm/slab.c36
1 files changed, 35 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c
index e76eee46688..d53ac9c26ab 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -95,6 +95,7 @@
#include <linux/init.h>
#include <linux/compiler.h>
#include <linux/cpuset.h>
+#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/notifier.h>
#include <linux/kallsyms.h>
@@ -4443,13 +4444,46 @@ static int leaks_show(struct seq_file *m, void *p)
return 0;
}
-const struct seq_operations slabstats_op = {
+static const struct seq_operations slabstats_op = {
.start = leaks_start,
.next = s_next,
.stop = s_stop,
.show = leaks_show,
};
+
+static int slabstats_open(struct inode *inode, struct file *file)
+{
+ unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ int ret = -ENOMEM;
+ if (n) {
+ ret = seq_open(file, &slabstats_op);
+ if (!ret) {
+ struct seq_file *m = file->private_data;
+ *n = PAGE_SIZE / (2 * sizeof(unsigned long));
+ m->private = n;
+ n = NULL;
+ }
+ kfree(n);
+ }
+ return ret;
+}
+
+static const struct file_operations proc_slabstats_operations = {
+ .open = slabstats_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_private,
+};
+#endif
+
+static int __init slab_proc_init(void)
+{
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+ proc_create("slab_allocators", 0, NULL, &proc_slabstats_operations);
#endif
+ return 0;
+}
+module_init(slab_proc_init);
#endif
/**