diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmalloc.c | 76 |
1 files changed, 75 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index ecf91f8034bf..afa550f66537 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -14,7 +14,7 @@ #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/interrupt.h> - +#include <linux/seq_file.h> #include <linux/vmalloc.h> #include <asm/uaccess.h> @@ -873,3 +873,77 @@ void free_vm_area(struct vm_struct *area) kfree(area); } EXPORT_SYMBOL_GPL(free_vm_area); + + +#ifdef CONFIG_PROC_FS +static void *s_start(struct seq_file *m, loff_t *pos) +{ + loff_t n = *pos; + struct vm_struct *v; + + read_lock(&vmlist_lock); + v = vmlist; + while (n > 0 && v) { + n--; + v = v->next; + } + if (!n) + return v; + + return NULL; + +} + +static void *s_next(struct seq_file *m, void *p, loff_t *pos) +{ + struct vm_struct *v = p; + + ++*pos; + return v->next; +} + +static void s_stop(struct seq_file *m, void *p) +{ + read_unlock(&vmlist_lock); +} + +static int s_show(struct seq_file *m, void *p) +{ + struct vm_struct *v = p; + + seq_printf(m, "0x%p-0x%p %7ld", + v->addr, v->addr + v->size, v->size); + + if (v->nr_pages) + seq_printf(m, " pages=%d", v->nr_pages); + + if (v->phys_addr) + seq_printf(m, " phys=%lx", v->phys_addr); + + if (v->flags & VM_IOREMAP) + seq_printf(m, " ioremap"); + + if (v->flags & VM_ALLOC) + seq_printf(m, " vmalloc"); + + if (v->flags & VM_MAP) + seq_printf(m, " vmap"); + + if (v->flags & VM_USERMAP) + seq_printf(m, " user"); + + if (v->flags & VM_VPAGES) + seq_printf(m, " vpages"); + + seq_putc(m, '\n'); + return 0; +} + +const struct seq_operations vmalloc_op = { + .start = s_start, + .next = s_next, + .stop = s_stop, + .show = s_show, +}; +#endif + |