diff options
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index c5db9a7264d9..75f49d312e8c 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -14,7 +14,6 @@ #include <linux/highmem.h> #include <linux/slab.h> #include <linux/spinlock.h> -#include <linux/mutex.h> #include <linux/interrupt.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> @@ -24,6 +23,7 @@ #include <linux/rbtree.h> #include <linux/radix-tree.h> #include <linux/rcupdate.h> +#include <linux/bootmem.h> #include <asm/atomic.h> #include <asm/uaccess.h> @@ -495,7 +495,7 @@ static atomic_t vmap_lazy_nr = ATOMIC_INIT(0); static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end, int sync, int force_flush) { - static DEFINE_MUTEX(purge_lock); + static DEFINE_SPINLOCK(purge_lock); LIST_HEAD(valist); struct vmap_area *va; int nr = 0; @@ -506,10 +506,10 @@ static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end, * the case that isn't actually used at the moment anyway. */ if (!sync && !force_flush) { - if (!mutex_trylock(&purge_lock)) + if (!spin_trylock(&purge_lock)) return; } else - mutex_lock(&purge_lock); + spin_lock(&purge_lock); rcu_read_lock(); list_for_each_entry_rcu(va, &vmap_area_list, list) { @@ -541,7 +541,7 @@ static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end, __free_vmap_area(va); spin_unlock(&vmap_area_lock); } - mutex_unlock(&purge_lock); + spin_unlock(&purge_lock); } /* @@ -984,6 +984,8 @@ EXPORT_SYMBOL(vm_map_ram); void __init vmalloc_init(void) { + struct vmap_area *va; + struct vm_struct *tmp; int i; for_each_possible_cpu(i) { @@ -996,6 +998,14 @@ void __init vmalloc_init(void) vbq->nr_dirty = 0; } + /* Import existing vmlist entries. */ + for (tmp = vmlist; tmp; tmp = tmp->next) { + va = alloc_bootmem(sizeof(struct vmap_area)); + va->flags = tmp->flags | VM_VM_AREA; + va->va_start = (unsigned long)tmp->addr; + va->va_end = va->va_start + tmp->size; + __insert_vmap_area(va); + } vmap_initialized = true; } |