On 03/13/2013 11:36 AM, Jiri Slaby wrote:
> On 02/19/2013 11:32 PM, Marcin Slusarz wrote:
>> On Tue, Feb 19, 2013 at 08:07:44AM +0100, Marcin Slusarz wrote:
>>> On Tue, Feb 19, 2013 at 12:43:06AM +0100, Jiri Slaby wrote:
>>>> On 02/19/2013 12:23 AM, Marcin Slusarz wrote:
>>>>> Tomorrow I'll post a patch for page allocation failure.
>>>>
>>>> What do you mean -- what kind of patch?
>>>
>>> A patch which will change pgt allocation to use vmalloc.
>
> It's still not in -next. Any plans on this?
Ping...
>> ---
>> From: Marcin Slusarz <marcin.slusarz@xxxxxxxxx>
>> Subject: [PATCH] drm/nouveau: use vmalloc for pgt allocation
>>
>> Page tables on nv50 take 48kB, which can be hard to allocate in one piece.
>> Let's use vmalloc.
>>
>> Signed-off-by: Marcin Slusarz <marcin.slusarz@xxxxxxxxx>
>> Cc: stable@xxxxxxxxxxxxxxx
>> ---
>> drivers/gpu/drm/nouveau/core/subdev/vm/base.c | 6 +++---
>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c
>> index 77c67fc..e66fb77 100644
>> --- a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c
>> +++ b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c
>> @@ -362,7 +362,7 @@ nouveau_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length,
>> vm->fpde = offset >> (vmm->pgt_bits + 12);
>> vm->lpde = (offset + length - 1) >> (vmm->pgt_bits + 12);
>>
>> - vm->pgt = kcalloc(vm->lpde - vm->fpde + 1, sizeof(*vm->pgt), GFP_KERNEL);
>> + vm->pgt = vzalloc((vm->lpde - vm->fpde + 1) * sizeof(*vm->pgt));
>> if (!vm->pgt) {
>> kfree(vm);
>> return -ENOMEM;
>> @@ -371,7 +371,7 @@ nouveau_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length,
>> ret = nouveau_mm_init(&vm->mm, mm_offset >> 12, mm_length >> 12,
>> block >> 12);
>> if (ret) {
>> - kfree(vm->pgt);
>> + vfree(vm->pgt);
>> kfree(vm);
>> return ret;
>> }
>> @@ -446,7 +446,7 @@ nouveau_vm_del(struct nouveau_vm *vm)
>> }
>>
>> nouveau_mm_fini(&vm->mm);
>> - kfree(vm->pgt);
>> + vfree(vm->pgt);
>> kfree(vm);
>> }
>>
>>
>
>
--
js
suse labs
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