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Date: Mon, 23 Nov 2020 22:07:41 -0800
From: ira.weiny@...el.com
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Ira Weiny <ira.weiny@...el.com>,
Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
Thomas Gleixner <tglx@...utronix.de>,
Dave Hansen <dave.hansen@...el.com>,
Matthew Wilcox <willy@...radead.org>,
Christoph Hellwig <hch@...radead.org>,
Dan Williams <dan.j.williams@...el.com>,
Al Viro <viro@...iv.linux.org.uk>,
Eric Biggers <ebiggers@...nel.org>,
Luis Chamberlain <mcgrof@...nel.org>,
David Howells <dhowells@...hat.com>, Chris Mason <clm@...com>,
Josef Bacik <josef@...icpanda.com>,
David Sterba <dsterba@...e.com>,
Steve French <sfrench@...ba.org>,
Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <yuchao0@...wei.com>,
Nicolas Pitre <nico@...xnic.net>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Brian King <brking@...ibm.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jérôme Glisse <jglisse@...hat.com>,
Kirti Wankhede <kwankhede@...dia.com>,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH 03/17] drivers/gpu: Convert to mem*_page()
From: Ira Weiny <ira.weiny@...el.com>
The pattern of kmap/mem*/kunmap is repeated. Use the new mem*_page()
calls instead.
Cc: Patrik Jakobsson <patrik.r.jakobsson@...il.com>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@...el.com>
Signed-off-by: Ira Weiny <ira.weiny@...el.com>
---
drivers/gpu/drm/gma500/gma_display.c | 7 +++----
drivers/gpu/drm/gma500/mmu.c | 4 ++--
drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 6 ++----
drivers/gpu/drm/i915/gt/intel_gtt.c | 9 ++-------
drivers/gpu/drm/i915/gt/shmem_utils.c | 8 +++-----
5 files changed, 12 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/gma500/gma_display.c b/drivers/gpu/drm/gma500/gma_display.c
index 3df6d6e850f5..f81114594211 100644
--- a/drivers/gpu/drm/gma500/gma_display.c
+++ b/drivers/gpu/drm/gma500/gma_display.c
@@ -9,6 +9,7 @@
#include <linux/delay.h>
#include <linux/highmem.h>
+#include <linux/pagemap.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fourcc.h>
@@ -334,7 +335,7 @@ int gma_crtc_cursor_set(struct drm_crtc *crtc,
struct gtt_range *gt;
struct gtt_range *cursor_gt = gma_crtc->cursor_gt;
struct drm_gem_object *obj;
- void *tmp_dst, *tmp_src;
+ void *tmp_dst;
int ret = 0, i, cursor_pages;
/* If we didn't get a handle then turn the cursor off */
@@ -400,9 +401,7 @@ int gma_crtc_cursor_set(struct drm_crtc *crtc,
/* Copy the cursor to cursor mem */
tmp_dst = dev_priv->vram_addr + cursor_gt->offset;
for (i = 0; i < cursor_pages; i++) {
- tmp_src = kmap(gt->pages[i]);
- memcpy(tmp_dst, tmp_src, PAGE_SIZE);
- kunmap(gt->pages[i]);
+ memcpy_from_page(tmp_dst, gt->pages[i], 0, PAGE_SIZE);
tmp_dst += PAGE_SIZE;
}
diff --git a/drivers/gpu/drm/gma500/mmu.c b/drivers/gpu/drm/gma500/mmu.c
index 505044c9a673..8a0856c7f439 100644
--- a/drivers/gpu/drm/gma500/mmu.c
+++ b/drivers/gpu/drm/gma500/mmu.c
@@ -5,6 +5,7 @@
**************************************************************************/
#include <linux/highmem.h>
+#include <linux/pagemap.h>
#include "mmu.h"
#include "psb_drv.h"
@@ -204,8 +205,7 @@ struct psb_mmu_pd *psb_mmu_alloc_pd(struct psb_mmu_driver *driver,
kunmap(pd->p);
- clear_page(kmap(pd->dummy_page));
- kunmap(pd->dummy_page);
+ memzero_page(pd->dummy_page, 0, PAGE_SIZE);
pd->tables = vmalloc_user(sizeof(struct psb_mmu_pt *) * 1024);
if (!pd->tables)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
index 75e8b71c18b9..8a25e08edd18 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
@@ -558,7 +558,7 @@ i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv,
do {
unsigned int len = min_t(typeof(size), size, PAGE_SIZE);
struct page *page;
- void *pgdata, *vaddr;
+ void *pgdata;
err = pagecache_write_begin(file, file->f_mapping,
offset, len, 0,
@@ -566,9 +566,7 @@ i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv,
if (err < 0)
goto fail;
- vaddr = kmap(page);
- memcpy(vaddr, data, len);
- kunmap(page);
+ memcpy_to_page(page, 0, data, len);
err = pagecache_write_end(file, file->f_mapping,
offset, len, len,
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c b/drivers/gpu/drm/i915/gt/intel_gtt.c
index 3f1114b58b01..f3d7c601d362 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.c
@@ -153,13 +153,8 @@ static void poison_scratch_page(struct drm_i915_gem_object *scratch)
if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM))
val = POISON_FREE;
- for_each_sgt_page(page, sgt, scratch->mm.pages) {
- void *vaddr;
-
- vaddr = kmap(page);
- memset(vaddr, val, PAGE_SIZE);
- kunmap(page);
- }
+ for_each_sgt_page(page, sgt, scratch->mm.pages)
+ memset_page(page, val, 0, PAGE_SIZE);
}
int setup_scratch_page(struct i915_address_space *vm)
diff --git a/drivers/gpu/drm/i915/gt/shmem_utils.c b/drivers/gpu/drm/i915/gt/shmem_utils.c
index f011ea42487e..2d5f1f2e803d 100644
--- a/drivers/gpu/drm/i915/gt/shmem_utils.c
+++ b/drivers/gpu/drm/i915/gt/shmem_utils.c
@@ -95,19 +95,17 @@ static int __shmem_rw(struct file *file, loff_t off,
unsigned int this =
min_t(size_t, PAGE_SIZE - offset_in_page(off), len);
struct page *page;
- void *vaddr;
page = shmem_read_mapping_page_gfp(file->f_mapping, pfn,
GFP_KERNEL);
if (IS_ERR(page))
return PTR_ERR(page);
- vaddr = kmap(page);
if (write)
- memcpy(vaddr + offset_in_page(off), ptr, this);
+ memcpy_to_page(page, offset_in_page(off), ptr, this);
else
- memcpy(ptr, vaddr + offset_in_page(off), this);
- kunmap(page);
+ memcpy_from_page(ptr, page, offset_in_page(off), this);
+
put_page(page);
len -= this;
--
2.28.0.rc0.12.gb6a658bd00c9
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