diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmalloc.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 65ae576030d..036536945dd 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -15,6 +15,7 @@ #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/interrupt.h> +#include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/debugobjects.h> #include <linux/kallsyms.h> @@ -1718,11 +1719,41 @@ static int s_show(struct seq_file *m, void *p) return 0; } -const struct seq_operations vmalloc_op = { +static const struct seq_operations vmalloc_op = { .start = s_start, .next = s_next, .stop = s_stop, .show = s_show, }; + +static int vmalloc_open(struct inode *inode, struct file *file) +{ + unsigned int *ptr = NULL; + int ret; + + if (NUMA_BUILD) + ptr = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL); + ret = seq_open(file, &vmalloc_op); + if (!ret) { + struct seq_file *m = file->private_data; + m->private = ptr; + } else + kfree(ptr); + return ret; +} + +static const struct file_operations proc_vmalloc_operations = { + .open = vmalloc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +static int __init proc_vmalloc_init(void) +{ + proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations); + return 0; +} +module_init(proc_vmalloc_init); #endif |