diff options
| author |   Tejun Heo <tj@kernel.org> | 2009-02-24 11:57:21 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-02-24 11:57:21 +0900 |
| commit | c0c0a29379b5848aec2e8f1c58d853d3cb7118b8 (patch) | |
| tree | 521d4c8ae5756652e7ed3f7242c516b79df76aa2 /mm/vmalloc.c | |
| parent | bootmem: reorder interface functions and add a missing one (diff) | |
| download | linux-dev-c0c0a29379b5848aec2e8f1c58d853d3cb7118b8.tar.xz linux-dev-c0c0a29379b5848aec2e8f1c58d853d3cb7118b8.zip | |
vmalloc: add @align to vm_area_register_early()
Impact: allow larger alignment for early vmalloc area allocation
Some early vmalloc users might want larger alignment, for example, for
custom large page mapping. Add @align to vm_area_register_early().
While at it, drop docbook comment on non-existent @size.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 224eca9650a8..366ae9ea6af2 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -995,7 +995,7 @@ EXPORT_SYMBOL(vm_map_ram); /** * vm_area_register_early - register vmap area early during boot * @vm: vm_struct to register - * @size: size of area to register + * @align: requested alignment * * This function is used to register kernel vm area before * vmalloc_init() is called. @vm->size and @vm->flags should contain @@ -1004,12 +1004,15 @@ EXPORT_SYMBOL(vm_map_ram); * * DO NOT USE THIS FUNCTION UNLESS YOU KNOW WHAT YOU'RE DOING. */ -void __init vm_area_register_early(struct vm_struct *vm) +void __init vm_area_register_early(struct vm_struct *vm, size_t align) { static size_t vm_init_off __initdata; + unsigned long addr; + + addr = ALIGN(VMALLOC_START + vm_init_off, align); + vm_init_off = PFN_ALIGN(addr + vm->size) - VMALLOC_START; - vm->addr = (void *)VMALLOC_START + vm_init_off; - vm_init_off = PFN_ALIGN(vm_init_off + vm->size); + vm->addr = (void *)addr; vm->next = vmlist; vmlist = vm; |