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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2008-10-06 00:59:10 +0400 |
|---|---|---|
| committer | Alexey Dobriyan <adobriyan@gmail.com> | 2008-10-23 15:17:27 +0400 |
| commit | a0ec95a8e69792e4ad642daac037c9b01ea3e2cd (patch) | |
| tree | ec8f483871151c152c198b605ab7ebd6046271b8 /mm/slab.c | |
| parent | d6917e19f3fda8e1f88bc23ddceed952927bd716 (diff) | |
| download | lwn-a0ec95a8e69792e4ad642daac037c9b01ea3e2cd.tar.gz lwn-a0ec95a8e69792e4ad642daac037c9b01ea3e2cd.zip | |
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/slab.c')
| -rw-r--r-- | mm/slab.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c index e76eee466886..d53ac9c26ab7 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 /** |