[PATCH] Remove unnecessary calls to kmap{,_local_page}() when acquiring pages using GFP_DMA32.

://lwn.net/Articles/836503/ Suggested-by: Ira Weiny Signed-off-by: Sumitra Sharma --- drivers/gpu/drm/gma500/mmu.c | 11 +++ 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/gma500/mmu.c b/drivers/gpu/drm/gma500/mmu.c index a70b01ccdf70..1a44dd062fd1 100644 --- a

Re: [PATCH] drm/gma500: Replace kmap{,_atomic}() with page_address()

On Wed, Jun 21, 2023 at 12:31:40AM +0200, Fabio M. De Francesco wrote: > On martedì 20 giugno 2023 20:01:48 CEST Sumitra Sharma wrote: > > Remove unnecessary calls to kmap{,_atomic}() when acquiring > > pages using GFP_DMA32. > > > > The GFP_DMA32 uses the DMA32 zon

Re: [PATCH v2] drm/i915: Replace kmap() with kmap_local_page()

On Tue, Jun 20, 2023 at 06:23:38AM -0700, Ira Weiny wrote: > Sumitra Sharma wrote: > > On Sun, Jun 18, 2023 at 11:11:08AM -0700, Ira Weiny wrote: > > > Sumitra Sharma wrote: > > > > kmap() has been deprecated in favor of the kmap_local_page() > > > >

[PATCH] drm/gma500: Replace kmap{,_atomic}() with page_address()

() and psb_mmu_pt_unmap_unlock() functions with page_address(pt->p). This is possible as pt = psb_mmu_alloc_pt(pd) allocates a page using pt->p = alloc_page(GFP_DMA32). Suggested-by: Ira Weiny Signed-off-by: Sumitra Sharma --- drivers/gpu/drm/gma500/mmu.c | 17 + 1 file changed, 5 inser

Re: [PATCH v2] drm/i915: Replace kmap() with kmap_local_page()

On Sun, Jun 18, 2023 at 11:11:08AM -0700, Ira Weiny wrote: > Sumitra Sharma wrote: > > kmap() has been deprecated in favor of the kmap_local_page() > > due to high cost, restricted mapping space, the overhead of a > > global lock for synchronization, and making the process sle

Re: [Intel-gfx] [PATCH] drm/i915: Call page_address() on page acquired with GFP_KERNEL flag

On Wed, Jun 14, 2023 at 05:30:25PM +0200, Thomas Hellström (Intel) wrote: > > On 6/14/23 15:22, Tvrtko Ursulin wrote: > > > > On 14/06/2023 13:35, Sumitra Sharma wrote: > > > Pages allocated with GFP_KERNEL cannot come from Highmem. > > > That is why the

[PATCH v2] drm/i915: Replace kmap() with kmap_local_page()

() with kmap_local_page(). Suggested-by: Ira Weiny Signed-off-by: Sumitra Sharma --- Changes in v2: - Replace kmap() with kmap_local_page(). - Change commit subject and message. drivers/gpu/drm/i915/i915_gpu_error.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff

[PATCH] drm/i915: Call page_address() on page acquired with GFP_KERNEL flag

address instead. Signed-off-by: Sumitra Sharma --- drivers/gpu/drm/i915/i915_gpu_error.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index f020c0086fbc..6f51cb4fc55c 100644 --- a/drivers/gpu/