Displaying 20 results from an estimated 3900 matches for "gfp_kernel".
2023 Jan 06
3
[PATCH 1/8] iommu: Add a gfp parameter to iommu_map()
The internal mechanisms support this, but instead of exposting the gfp to
the caller it wrappers it into iommu_map() and iommu_map_atomic()
Fix this instead of adding more variants for GFP_KERNEL_ACCOUNT.
Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
---
arch/arm/mm/dma-mapping.c | 11 +++++++----
.../gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 3 ++-
drivers/gpu/drm/tegra/drm.c | 2 +-
drivers/gpu/host1x/cdma.c...
2023 Jan 06
3
[PATCH 1/8] iommu: Add a gfp parameter to iommu_map()
The internal mechanisms support this, but instead of exposting the gfp to
the caller it wrappers it into iommu_map() and iommu_map_atomic()
Fix this instead of adding more variants for GFP_KERNEL_ACCOUNT.
Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
---
arch/arm/mm/dma-mapping.c | 11 +++++++----
.../gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 3 ++-
drivers/gpu/drm/tegra/drm.c | 2 +-
drivers/gpu/host1x/cdma.c...
2023 Jan 06
3
[PATCH 1/8] iommu: Add a gfp parameter to iommu_map()
The internal mechanisms support this, but instead of exposting the gfp to
the caller it wrappers it into iommu_map() and iommu_map_atomic()
Fix this instead of adding more variants for GFP_KERNEL_ACCOUNT.
Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
---
arch/arm/mm/dma-mapping.c | 11 +++++++----
.../gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 3 ++-
drivers/gpu/drm/tegra/drm.c | 2 +-
drivers/gpu/host1x/cdma.c...
2012 Dec 10
6
[Bug 58087] New: [-next] nouveau corrupts kernel mm allocator
https://bugs.freedesktop.org/show_bug.cgi?id=58087
Priority: medium
Bug ID: 58087
Assignee: nouveau at lists.freedesktop.org
Summary: [-next] nouveau corrupts kernel mm allocator
QA Contact: xorg-team at lists.x.org
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: peter at
2020 Aug 06
1
[PATCH][next] vdpa/mlx5: fix memory allocation failure checks
...x5_vnet.c
index 3ec44a4f0e45..55bc58e1dae9 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -867,7 +867,7 @@ static void alloc_inout(struct mlx5_vdpa_net *ndev, int cmd, void **in, int *inl
*outlen = MLX5_ST_SZ_BYTES(qp_2rst_out);
*in = kzalloc(*inlen, GFP_KERNEL);
*out = kzalloc(*outlen, GFP_KERNEL);
- if (!in || !out)
+ if (!*in || !*out)
goto outerr;
MLX5_SET(qp_2rst_in, *in, opcode, cmd);
@@ -879,7 +879,7 @@ static void alloc_inout(struct mlx5_vdpa_net *ndev, int cmd, void **in, int *inl
*outlen = MLX5_ST_SZ_BYTES(rst2init_qp_out);
*...
2018 Nov 05
2
[PATCH 1/5] VSOCK: support fill mergeable rx buffer in guest
...virtio_vsock *virtio_vsock_get(void)
@@ -256,6 +257,25 @@ static int virtio_transport_send_pkt_loopback(struct virtio_vsock *vsock,
return 0;
}
+static int fill_mergeable_rx_buff(struct virtqueue *vq)
+{
+ void *page = NULL;
+ struct scatterlist sg;
+ int err;
+
+ page = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ sg_init_one(&sg, page, PAGE_SIZE);
+
+ err = virtqueue_add_inbuf(vq, &sg, 1, page, GFP_KERNEL);
+ if (err < 0)
+ free_page((unsigned long) page);
+
+ return err;
+}
+
static void virtio_vsock_rx_fill(struct virtio_vsock *vsock)
{
int buf_len = V...
2018 Nov 05
2
[PATCH 1/5] VSOCK: support fill mergeable rx buffer in guest
...virtio_vsock *virtio_vsock_get(void)
@@ -256,6 +257,25 @@ static int virtio_transport_send_pkt_loopback(struct virtio_vsock *vsock,
return 0;
}
+static int fill_mergeable_rx_buff(struct virtqueue *vq)
+{
+ void *page = NULL;
+ struct scatterlist sg;
+ int err;
+
+ page = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ sg_init_one(&sg, page, PAGE_SIZE);
+
+ err = virtqueue_add_inbuf(vq, &sg, 1, page, GFP_KERNEL);
+ if (err < 0)
+ free_page((unsigned long) page);
+
+ return err;
+}
+
static void virtio_vsock_rx_fill(struct virtio_vsock *vsock)
{
int buf_len = V...
2024 Mar 06
1
[PATCH v3] nouveau/dmem: handle kcalloc() allocation failure
...71e7..6fb65b01d77 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dmem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c
@@ -378,9 +378,9 @@ nouveau_dmem_evict_chunk(struct nouveau_dmem_chunk *chunk)
dma_addr_t *dma_addrs;
struct nouveau_fence *fence;
- src_pfns = kcalloc(npages, sizeof(*src_pfns), GFP_KERNEL);
- dst_pfns = kcalloc(npages, sizeof(*dst_pfns), GFP_KERNEL);
- dma_addrs = kcalloc(npages, sizeof(*dma_addrs), GFP_KERNEL);
+ src_pfns = kvcalloc(npages, sizeof(*src_pfns), GFP_KERNEL | __GFP_NOFAIL);
+ dst_pfns = kvcalloc(npages, sizeof(*dst_pfns), GFP_KERNEL | __GFP_NOFAIL);
+ dma_addrs = kvcal...
2016 Aug 22
5
[PATCH] CodingStyle: add some more error handling guidelines
...ot;) suggests never naming goto
labels after the goto location - that is the error that is handled.
But it's actually pretty common and IMHO it's a reasonable style
provided each error gets its own label, and each label comes after the
matching cleanup:
foo = kmalloc(SIZE, GFP_KERNEL);
if (!foo)
goto err_foo;
foo->bar = kmalloc(SIZE, GFP_KERNEL);
if (!foo->bar)
goto err_bar;
...
kfree(foo->bar);
err_bar:
kfree(foo);...
2016 Aug 22
5
[PATCH] CodingStyle: add some more error handling guidelines
...ot;) suggests never naming goto
labels after the goto location - that is the error that is handled.
But it's actually pretty common and IMHO it's a reasonable style
provided each error gets its own label, and each label comes after the
matching cleanup:
foo = kmalloc(SIZE, GFP_KERNEL);
if (!foo)
goto err_foo;
foo->bar = kmalloc(SIZE, GFP_KERNEL);
if (!foo->bar)
goto err_bar;
...
kfree(foo->bar);
err_bar:
kfree(foo);...
2013 Dec 26
2
[PATCH net-next 2/3] virtio-net: use per-receive queue page frag alloc for mergeable bufs
...12-26 at 13:28 -0800, Michael Dalton wrote:
> On Mon, Dec 23, 2013 at 11:37 AM, Michael S. Tsirkin <mst at redhat.com> wrote:
> > So there isn't a conflict with respect to locking.
> >
> > Is it problematic to use same page_frag with both GFP_ATOMIC and with
> > GFP_KERNEL? If yes why?
>
> I believe it is safe to use the same page_frag and I will send out a
> followup patchset using just the per-receive page_frags. For future
> consideration, Eric noted that disabling NAPI before GFP_KERNEL
> allocs can potentially inhibit virtio-net network processin...
2019 Apr 26
0
[PATCH 09/10] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...struct airq_info *info)
{
unsigned long i, flags;
@@ -335,8 +355,7 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
struct airq_info *airq_info = vcdev->airq_info;
if (vcdev->is_thinint) {
- thinint_area = kzalloc(sizeof(*thinint_area),
- GFP_DMA | GFP_KERNEL);
+ vc_dma_alloc_struct(&vcdev->vdev, thinint_area);
if (!thinint_area)
return;
thinint_area->summary_indicator =
@@ -347,8 +366,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
ccw->cda = (__u32)(unsigned long) thinint_area;
} else {
/* pa...
2013 Dec 26
2
[PATCH net-next 2/3] virtio-net: use per-receive queue page frag alloc for mergeable bufs
...12-26 at 13:28 -0800, Michael Dalton wrote:
> On Mon, Dec 23, 2013 at 11:37 AM, Michael S. Tsirkin <mst at redhat.com> wrote:
> > So there isn't a conflict with respect to locking.
> >
> > Is it problematic to use same page_frag with both GFP_ATOMIC and with
> > GFP_KERNEL? If yes why?
>
> I believe it is safe to use the same page_frag and I will send out a
> followup patchset using just the per-receive page_frags. For future
> consideration, Eric noted that disabling NAPI before GFP_KERNEL
> allocs can potentially inhibit virtio-net network processin...
2019 May 23
0
[PATCH v2 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...struct airq_info *info)
{
unsigned long i, flags;
@@ -336,8 +356,7 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
struct airq_info *airq_info = vcdev->airq_info;
if (vcdev->is_thinint) {
- thinint_area = kzalloc(sizeof(*thinint_area),
- GFP_DMA | GFP_KERNEL);
+ vc_dma_alloc_struct(&vcdev->vdev, thinint_area);
if (!thinint_area)
return;
thinint_area->summary_indicator =
@@ -348,8 +367,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
ccw->cda = (__u32)(unsigned long) thinint_area;
} else {
/* pa...
2019 May 29
0
[PATCH v3 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...struct airq_info *info)
{
unsigned long i, flags;
@@ -336,8 +356,7 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
struct airq_info *airq_info = vcdev->airq_info;
if (vcdev->is_thinint) {
- thinint_area = kzalloc(sizeof(*thinint_area),
- GFP_DMA | GFP_KERNEL);
+ vc_dma_alloc_struct(&vcdev->vdev, thinint_area);
if (!thinint_area)
return;
thinint_area->summary_indicator =
@@ -348,8 +367,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
ccw->cda = (__u32)(unsigned long) thinint_area;
} else {
/* pa...
2019 Jun 06
0
[PATCH v4 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...>indicators2;
}
struct vq_info_block_legacy {
@@ -336,8 +340,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
struct airq_info *airq_info = vcdev->airq_info;
if (vcdev->is_thinint) {
- thinint_area = kzalloc(sizeof(*thinint_area),
- GFP_DMA | GFP_KERNEL);
+ thinint_area = ccw_device_dma_zalloc(vcdev->cdev,
+ sizeof(*thinint_area));
if (!thinint_area)
return;
thinint_area->summary_indicator =
@@ -348,8 +352,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
ccw->cda = (__u32)(unsigned long)...
2019 Jun 12
0
[PATCH v5 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...>indicators2;
}
struct vq_info_block_legacy {
@@ -336,8 +340,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
struct airq_info *airq_info = vcdev->airq_info;
if (vcdev->is_thinint) {
- thinint_area = kzalloc(sizeof(*thinint_area),
- GFP_DMA | GFP_KERNEL);
+ thinint_area = ccw_device_dma_zalloc(vcdev->cdev,
+ sizeof(*thinint_area));
if (!thinint_area)
return;
thinint_area->summary_indicator =
@@ -348,8 +352,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
ccw->cda = (__u32)(unsigned long)...
2020 Sep 22
1
[PATCH] kernel/resource: Fix use of ternary condition in release_mem_region_adjustable
Clang warns:
kernel/resource.c:1281:53: warning: operator '?:' has lower precedence
than '|'; '|' will be evaluated first
[-Wbitwise-conditional-parentheses]
new_res = alloc_resource(GFP_KERNEL | alloc_nofail ? __GFP_NOFAIL : 0);
~~~~~~~~~~~~~~~~~~~~~~~~~ ^
kernel/resource.c:1281:53: note: place parentheses around the '|'
expression to silence this warning
new_res = alloc_resource(GFP_KERNEL | alloc_nofail ? __GFP_NOFAIL : 0);...
2018 Nov 12
14
[PATCH 2/2] drm/atomic: Create and use __drm_atomic_helper_crtc_reset() everywhere
...arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c
index e1b72782848c..9a924ff27148 100644
--- a/drivers/gpu/drm/arm/malidp_crtc.c
+++ b/drivers/gpu/drm/arm/malidp_crtc.c
@@ -474,10 +474,7 @@ static void malidp_crtc_reset(struct drm_crtc *crtc)
kfree(state);
state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (state) {
- crtc->state = &state->base;
- crtc->state->crtc = crtc;
- }
+ __drm_atomic_helper_crtc_reset(crtc, &state->base);
}
static void malidp_crtc_destroy_state(struct drm_crtc *crtc,
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/...
2020 Jun 25
5
[RFC 0/3] virtio: NUMA-aware memory allocation
These patches are not ready to be merged because I was unable to measure a
performance improvement. I'm publishing them so they are archived in case
someone picks up this work again in the future.
The goal of these patches is to allocate virtqueues and driver state from the
device's NUMA node for optimal memory access latency. Only guests with a vNUMA
topology and virtio devices spread