diff mbox series

[V1,vfio,6/6] vfio/platform: Use GFP_KERNEL_ACCOUNT for userspace persistent allocations

Message ID 20230108154427.32609-7-yishaih@nvidia.com (mailing list archive)
State New, archived
Headers show
Series Move to use cgroups for userspace persistent allocations | expand

Commit Message

Yishai Hadas Jan. 8, 2023, 3:44 p.m. UTC 
Use GFP_KERNEL_ACCOUNT for userspace persistent allocations.

The GFP_KERNEL_ACCOUNT option lets the memory allocator know that this
is untrusted allocation triggered from userspace and should be a subject
of kmem accountingis, and as such it is controlled by the cgroup
mechanism.

Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
---
 drivers/vfio/platform/vfio_platform_common.c | 2 +-
 drivers/vfio/platform/vfio_platform_irq.c    | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
index 1a0a238ffa35..278c92cde555 100644
--- a/drivers/vfio/platform/vfio_platform_common.c
+++ b/drivers/vfio/platform/vfio_platform_common.c
@@ -142,7 +142,7 @@  static int vfio_platform_regions_init(struct vfio_platform_device *vdev)
 		cnt++;
 
 	vdev->regions = kcalloc(cnt, sizeof(struct vfio_platform_region),
-				GFP_KERNEL);
+				GFP_KERNEL_ACCOUNT);
 	if (!vdev->regions)
 		return -ENOMEM;
 
diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c
index c5b09ec0a3c9..665197caed89 100644
--- a/drivers/vfio/platform/vfio_platform_irq.c
+++ b/drivers/vfio/platform/vfio_platform_irq.c
@@ -186,9 +186,8 @@  static int vfio_set_trigger(struct vfio_platform_device *vdev, int index,
 
 	if (fd < 0) /* Disable only */
 		return 0;
-
-	irq->name = kasprintf(GFP_KERNEL, "vfio-irq[%d](%s)",
-						irq->hwirq, vdev->name);
+	irq->name = kasprintf(GFP_KERNEL_ACCOUNT, "vfio-irq[%d](%s)",
+			      irq->hwirq, vdev->name);
 	if (!irq->name)
 		return -ENOMEM;
 
@@ -286,7 +285,8 @@  int vfio_platform_irq_init(struct vfio_platform_device *vdev)
 	while (vdev->get_irq(vdev, cnt) >= 0)
 		cnt++;
 
-	vdev->irqs = kcalloc(cnt, sizeof(struct vfio_platform_irq), GFP_KERNEL);
+	vdev->irqs = kcalloc(cnt, sizeof(struct vfio_platform_irq),
+			     GFP_KERNEL_ACCOUNT);
 	if (!vdev->irqs)
 		return -ENOMEM;