diff options
Diffstat (limited to 'fs/proc/proc_misc.c')
| -rw-r--r-- | fs/proc/proc_misc.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c index 1d24fead51a6..1e9ea37d457e 100644 --- a/fs/proc/proc_misc.c +++ b/fs/proc/proc_misc.c @@ -312,7 +312,7 @@ static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos) case BLK_HDR: info->state = BLK_LIST; (*pos)++; - break; + /*fallthrough*/ case BLK_LIST: if (get_blkdev_info(info->blkdev,&idummy,&ndummy)) { /* @@ -485,6 +485,40 @@ static struct file_operations proc_slabinfo_operations = { .llseek = seq_lseek, .release = seq_release, }; + +#ifdef CONFIG_DEBUG_SLAB_LEAK +extern struct seq_operations slabstats_op; +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 int slabstats_release(struct inode *inode, struct file *file) +{ + struct seq_file *m = file->private_data; + kfree(m->private); + return seq_release(inode, file); +} + +static struct file_operations proc_slabstats_operations = { + .open = slabstats_open, + .read = seq_read, + .llseek = seq_lseek, + .release = slabstats_release, +}; +#endif #endif static int show_stat(struct seq_file *p, void *v) @@ -744,6 +778,9 @@ void __init proc_misc_init(void) create_seq_entry("interrupts", 0, &proc_interrupts_operations); #ifdef CONFIG_SLAB create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations); +#ifdef CONFIG_DEBUG_SLAB_LEAK + create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations); +#endif #endif create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations); create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations); |