drm/nouveau: fix command submission to use vmalloc for big allocations
I was getting a order 4 allocation failure from kmalloc when testing some
game after a few days uptime with some suspend/resumes.
For big allocations vmalloc should be used instead.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 487242f..f32b712 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -579,18 +579,31 @@
return 0;
}
+static inline void
+u_free(void *addr)
+{
+ if (!is_vmalloc_addr(addr))
+ kfree(addr);
+ else
+ vfree(addr);
+}
+
static inline void *
u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
{
void *mem;
void __user *userptr = (void __force __user *)(uintptr_t)user;
- mem = kmalloc(nmemb * size, GFP_KERNEL);
+ size *= nmemb;
+
+ mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
+ if (!mem)
+ mem = vmalloc(size);
if (!mem)
return ERR_PTR(-ENOMEM);
- if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
- kfree(mem);
+ if (DRM_COPY_FROM_USER(mem, userptr, size)) {
+ u_free(mem);
return ERR_PTR(-EFAULT);
}
@@ -676,7 +689,7 @@
nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
}
- kfree(reloc);
+ u_free(reloc);
return ret;
}
@@ -738,7 +751,7 @@
bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
if (IS_ERR(bo)) {
- kfree(push);
+ u_free(push);
return nouveau_abi16_put(abi16, PTR_ERR(bo));
}
@@ -849,8 +862,8 @@
nouveau_fence_unref(&fence);
out_prevalid:
- kfree(bo);
- kfree(push);
+ u_free(bo);
+ u_free(push);
out_next:
if (chan->dma.ib_max) {