[ 3.8.y.z extended stable ] Patch "drm/nouveau: use vmalloc for pgt allocation" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Tue Jul 16 22:54:00 UTC 2013
This is a note to let you know that I have just added a patch titled
drm/nouveau: use vmalloc for pgt allocation
to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue
This patch is scheduled to be released in version 3.8.13.5.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From 7b5e74136ca9b6d8a4d8bfade629af0a02ebd447 Mon Sep 17 00:00:00 2001
From: Marcin Slusarz <marcin.slusarz at gmail.com>
Date: Tue, 11 Jun 2013 10:50:30 +0200
Subject: drm/nouveau: use vmalloc for pgt allocation
commit d005f51eb93d71cd40ebd11dd377453fa8c8a42a upstream.
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 at gmail.com>
Signed-off-by: Ben Skeggs <bskeggs at redhat.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
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);
}
--
1.8.1.2
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