From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: DRI Development <dri-devel@lists.freedesktop.org>,
LKML <linux-kernel@vger.kernel.org>
Cc: kvm@vger.kernel.org, linux-mm@kvack.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-media@vger.kernel.org,
linux-s390@vger.kernel.org,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Daniel Vetter" <daniel.vetter@intel.com>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Inki Dae" <inki.dae@samsung.com>,
"Joonyoung Shim" <jy0922.shim@samsung.com>,
"Seung-Woo Kim" <sw0312.kim@samsung.com>,
"Kyungmin Park" <kyungmin.park@samsung.com>,
"Kukjin Kim" <kgene@kernel.org>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"John Hubbard" <jhubbard@nvidia.com>,
"Jérôme Glisse" <jglisse@redhat.com>, "Jan Kara" <jack@suse.cz>,
"Dan Williams" <dan.j.williams@intel.com>
Subject: [PATCH 01/13] drm/exynos: Stop using frame_vector helpers
Date: Wed, 7 Oct 2020 18:44:14 +0200 [thread overview]
Message-ID: <20201007164426.1812530-2-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <20201007164426.1812530-1-daniel.vetter@ffwll.ch>
All we need are a pages array, pin_user_pages_fast can give us that
directly. Plus this avoids the entire raw pfn side of get_vaddr_frames.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: linux-mm@kvack.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-media@vger.kernel.org
---
drivers/gpu/drm/exynos/Kconfig | 1 -
drivers/gpu/drm/exynos/exynos_drm_g2d.c | 48 ++++++++++++-------------
2 files changed, 22 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
index 6417f374b923..43257ef3c09d 100644
--- a/drivers/gpu/drm/exynos/Kconfig
+++ b/drivers/gpu/drm/exynos/Kconfig
@@ -88,7 +88,6 @@ comment "Sub-drivers"
config DRM_EXYNOS_G2D
bool "G2D"
depends on VIDEO_SAMSUNG_S5P_G2D=n || COMPILE_TEST
- select FRAME_VECTOR
help
Choose this option if you want to use Exynos G2D for DRM.
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index 967a5cdc120e..c83f6faac9de 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -205,7 +205,8 @@ struct g2d_cmdlist_userptr {
dma_addr_t dma_addr;
unsigned long userptr;
unsigned long size;
- struct frame_vector *vec;
+ struct page **pages;
+ unsigned int npages;
struct sg_table *sgt;
atomic_t refcount;
bool in_pool;
@@ -378,7 +379,7 @@ static void g2d_userptr_put_dma_addr(struct g2d_data *g2d,
bool force)
{
struct g2d_cmdlist_userptr *g2d_userptr = obj;
- struct page **pages;
+ int i;
if (!obj)
return;
@@ -398,15 +399,11 @@ static void g2d_userptr_put_dma_addr(struct g2d_data *g2d,
dma_unmap_sgtable(to_dma_dev(g2d->drm_dev), g2d_userptr->sgt,
DMA_BIDIRECTIONAL, 0);
- pages = frame_vector_pages(g2d_userptr->vec);
- if (!IS_ERR(pages)) {
- int i;
+ for (i = 0; i < g2d_userptr->npages; i++)
+ set_page_dirty_lock(g2d_userptr->pages[i]);
- for (i = 0; i < frame_vector_count(g2d_userptr->vec); i++)
- set_page_dirty_lock(pages[i]);
- }
- put_vaddr_frames(g2d_userptr->vec);
- frame_vector_destroy(g2d_userptr->vec);
+ unpin_user_pages(g2d_userptr->pages, g2d_userptr->npages);
+ kvfree(g2d_userptr->pages);
if (!g2d_userptr->out_of_list)
list_del_init(&g2d_userptr->list);
@@ -474,35 +471,34 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct g2d_data *g2d,
offset = userptr & ~PAGE_MASK;
end = PAGE_ALIGN(userptr + size);
npages = (end - start) >> PAGE_SHIFT;
- g2d_userptr->vec = frame_vector_create(npages);
- if (!g2d_userptr->vec) {
+ g2d_userptr->pages = kvmalloc_array(npages, sizeof(*g2d_userptr->pages),
+ GFP_KERNEL);
+ if (!g2d_userptr->pages) {
ret = -ENOMEM;
goto err_free;
}
- ret = get_vaddr_frames(start, npages, FOLL_FORCE | FOLL_WRITE,
- g2d_userptr->vec);
+ ret = pin_user_pages_fast(start, npages, FOLL_FORCE | FOLL_WRITE,
+ g2d_userptr->pages);
if (ret != npages) {
DRM_DEV_ERROR(g2d->dev,
"failed to get user pages from userptr.\n");
if (ret < 0)
- goto err_destroy_framevec;
- ret = -EFAULT;
- goto err_put_framevec;
- }
- if (frame_vector_to_pages(g2d_userptr->vec) < 0) {
+ goto err_destroy_pages;
+ npages = ret;
ret = -EFAULT;
- goto err_put_framevec;
+ goto err_unpin_pages;
}
+ g2d_userptr->npages = npages;
sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
if (!sgt) {
ret = -ENOMEM;
- goto err_put_framevec;
+ goto err_unpin_pages;
}
ret = sg_alloc_table_from_pages(sgt,
- frame_vector_pages(g2d_userptr->vec),
+ g2d_userptr->pages,
npages, offset, size, GFP_KERNEL);
if (ret < 0) {
DRM_DEV_ERROR(g2d->dev, "failed to get sgt from pages.\n");
@@ -538,11 +534,11 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct g2d_data *g2d,
err_free_sgt:
kfree(sgt);
-err_put_framevec:
- put_vaddr_frames(g2d_userptr->vec);
+err_unpin_pages:
+ unpin_user_pages(g2d_userptr->pages, npages);
-err_destroy_framevec:
- frame_vector_destroy(g2d_userptr->vec);
+err_destroy_pages:
+ kvfree(g2d_userptr->pages);
err_free:
kfree(g2d_userptr);
--
2.28.0
next prev parent reply other threads:[~2020-10-07 16:44 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-07 16:44 [PATCH 00/13] follow_pfn and other iomap races Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter [this message]
2020-10-07 20:32 ` [PATCH 01/13] drm/exynos: Stop using frame_vector helpers John Hubbard
2020-10-07 21:32 ` Daniel Vetter
2020-10-07 21:36 ` John Hubbard
2020-10-07 21:50 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 02/13] drm/exynos: Use FOLL_LONGTERM for g2d cmdlists Daniel Vetter
2020-10-07 20:43 ` John Hubbard
2020-10-07 16:44 ` [PATCH 03/13] misc/habana: Stop using frame_vector helpers Daniel Vetter
2020-10-07 20:38 ` John Hubbard
2020-10-07 16:44 ` [PATCH 04/13] misc/habana: Use FOLL_LONGTERM for userptr Daniel Vetter
2020-10-07 20:46 ` John Hubbard
2020-10-07 16:44 ` [PATCH 05/13] mm/frame-vector: Use FOLL_LONGTERM Daniel Vetter
2020-10-07 16:53 ` Jason Gunthorpe
2020-10-07 17:12 ` Daniel Vetter
2020-10-07 17:33 ` Jason Gunthorpe
2020-10-07 21:13 ` John Hubbard
2020-10-07 21:30 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 06/13] media: videobuf2: Move frame_vector into media subsystem Daniel Vetter
2020-10-07 22:18 ` John Hubbard
2020-10-07 16:44 ` [PATCH 07/13] mm: close race in generic_access_phys Daniel Vetter
2020-10-07 17:27 ` Jason Gunthorpe
2020-10-07 18:01 ` Daniel Vetter
2020-10-07 23:21 ` Jason Gunthorpe
2020-10-08 0:44 ` John Hubbard
2020-10-08 7:23 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 08/13] s390/pci: Remove races against pte updates Daniel Vetter
2020-10-08 16:44 ` Gerald Schaefer
2020-10-08 17:16 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 09/13] PCI: obey iomem restrictions for procfs mmap Daniel Vetter
2020-10-07 18:46 ` Bjorn Helgaas
2020-10-07 16:44 ` [PATCH 10/13] PCI: revoke mappings like devmem Daniel Vetter
2020-10-07 18:41 ` Bjorn Helgaas
2020-10-07 19:24 ` Daniel Vetter
2020-10-07 19:33 ` Dan Williams
2020-10-07 19:47 ` Daniel Vetter
2020-10-07 22:23 ` Dan Williams
2020-10-07 22:29 ` Dan Williams
2020-10-08 8:09 ` Daniel Vetter
2020-10-07 23:24 ` Jason Gunthorpe
2020-10-08 7:31 ` Daniel Vetter
2020-10-08 7:49 ` Dan Williams
2020-10-08 8:13 ` Daniel Vetter
2020-10-08 8:35 ` Dan Williams
2020-10-08 12:41 ` Jason Gunthorpe
2020-10-07 16:44 ` [PATCH 11/13] mm: add unsafe_follow_pfn Daniel Vetter
2020-10-07 17:36 ` Jason Gunthorpe
2020-10-07 18:10 ` Daniel Vetter
2020-10-07 19:00 ` Jason Gunthorpe
2020-10-07 19:38 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 12/13] media/videbuf1|2: Mark follow_pfn usage as unsafe Daniel Vetter
2020-10-07 16:44 ` [PATCH 13/13] vfio/type1: Mark follow_pfn " Daniel Vetter
2020-10-07 17:39 ` Jason Gunthorpe
2020-10-07 18:14 ` Daniel Vetter
2020-10-07 18:47 ` Jason Gunthorpe
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