Re: [PATCH V2 11/11] drm: Remove drm specific kmap_atomic code
On Mon, May 04, 2020 at 01:18:51PM +0200, Daniel Vetter wrote:
> On Mon, May 4, 2020 at 3:09 AM wrote:
> >
> > From: Ira Weiny
> >
> > kmap_atomic_prot() is now exported by all architectures. Use this
> > function rather than open coding a driver specific kmap_atomic.
> >
> > Reviewed-by: Christian König
> > Reviewed-by: Christoph Hellwig
> > Signed-off-by: Ira Weiny
>
> I'm assuming this lands through some other tree or a topic branch or whatever.
Yes I think Andrew queued this up before and so I hope he will continue to do
so with the subsequent versions.
Andrew, LMK if this is an issue.
Thanks,
Ira
>
> Acked-by: Daniel Vetter
>
> Cheers, Daniel
>
> > ---
> > drivers/gpu/drm/ttm/ttm_bo_util.c| 56 ++--
> > drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 16
> > include/drm/ttm/ttm_bo_api.h | 4 --
> > 3 files changed, 12 insertions(+), 64 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c
> > b/drivers/gpu/drm/ttm/ttm_bo_util.c
> > index 52d2b71f1588..f09b096ba4fd 100644
> > --- a/drivers/gpu/drm/ttm/ttm_bo_util.c
> > +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
> > @@ -257,54 +257,6 @@ static int ttm_copy_io_page(void *dst, void *src,
> > unsigned long page)
> > return 0;
> > }
> >
> > -#ifdef CONFIG_X86
> > -#define __ttm_kmap_atomic_prot(__page, __prot) kmap_atomic_prot(__page,
> > __prot)
> > -#define __ttm_kunmap_atomic(__addr) kunmap_atomic(__addr)
> > -#else
> > -#define __ttm_kmap_atomic_prot(__page, __prot) vmap(&__page, 1, 0, __prot)
> > -#define __ttm_kunmap_atomic(__addr) vunmap(__addr)
> > -#endif
> > -
> > -
> > -/**
> > - * ttm_kmap_atomic_prot - Efficient kernel map of a single page with
> > - * specified page protection.
> > - *
> > - * @page: The page to map.
> > - * @prot: The page protection.
> > - *
> > - * This function maps a TTM page using the kmap_atomic api if available,
> > - * otherwise falls back to vmap. The user must make sure that the
> > - * specified page does not have an aliased mapping with a different caching
> > - * policy unless the architecture explicitly allows it. Also mapping and
> > - * unmapping using this api must be correctly nested. Unmapping should
> > - * occur in the reverse order of mapping.
> > - */
> > -void *ttm_kmap_atomic_prot(struct page *page, pgprot_t prot)
> > -{
> > - if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL))
> > - return kmap_atomic(page);
> > - else
> > - return __ttm_kmap_atomic_prot(page, prot);
> > -}
> > -EXPORT_SYMBOL(ttm_kmap_atomic_prot);
> > -
> > -/**
> > - * ttm_kunmap_atomic_prot - Unmap a page that was mapped using
> > - * ttm_kmap_atomic_prot.
> > - *
> > - * @addr: The virtual address from the map.
> > - * @prot: The page protection.
> > - */
> > -void ttm_kunmap_atomic_prot(void *addr, pgprot_t prot)
> > -{
> > - if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL))
> > - kunmap_atomic(addr);
> > - else
> > - __ttm_kunmap_atomic(addr);
> > -}
> > -EXPORT_SYMBOL(ttm_kunmap_atomic_prot);
> > -
> > static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src,
> > unsigned long page,
> > pgprot_t prot)
> > @@ -316,13 +268,13 @@ static int ttm_copy_io_ttm_page(struct ttm_tt *ttm,
> > void *src,
> > return -ENOMEM;
> >
> > src = (void *)((unsigned long)src + (page << PAGE_SHIFT));
> > - dst = ttm_kmap_atomic_prot(d, prot);
> > + dst = kmap_atomic_prot(d, prot);
> > if (!dst)
> > return -ENOMEM;
> >
> > memcpy_fromio(dst, src, PAGE_SIZE);
> >
> > - ttm_kunmap_atomic_prot(dst, prot);
> > + kunmap_atomic(dst);
> >
> > return 0;
> > }
> > @@ -338,13 +290,13 @@ static int ttm_copy_ttm_io_page(struct ttm_tt *ttm,
> > void *dst,
> > return -ENOMEM;
> >
> > dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT));
> > - src = ttm_kmap_atomic_prot(s, prot);
> > + src = kmap_atomic_prot(s, prot);
> > if (!src)
> > return -ENOMEM;
> >
> > memcpy_toio(dst, src, PAGE_SIZE);
> >
> > - ttm_kunmap_atomic_prot(src, prot);
> > + kunmap_atomic(src);
> >
> > return 0;
> > }
> > diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> > b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> > index bb46ca0c458f..94d456a1d1a9 100644
> > --- a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> > +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> > @@ -374,12 +374,12 @@ static int vmw_bo_cpu_blit_line(struct
> > vmw_bo_blit_line_data *d,
> > copy_size = min_t(u32, copy_size, PAGE_SIZE -
> > src_page_offset);
> >
> > if (unmap_src) {
> > - ttm_kunmap_atomic_prot(d->src_addr, d->src_prot);
> > + kunmap_atomic(d->src_addr);
> > d->src_addr = NULL;
> > }
> >
> >
Re: [PATCH V2 11/11] drm: Remove drm specific kmap_atomic code
On Mon, May 4, 2020 at 3:09 AM wrote:
>
> From: Ira Weiny
>
> kmap_atomic_prot() is now exported by all architectures. Use this
> function rather than open coding a driver specific kmap_atomic.
>
> Reviewed-by: Christian König
> Reviewed-by: Christoph Hellwig
> Signed-off-by: Ira Weiny
I'm assuming this lands through some other tree or a topic branch or whatever.
Acked-by: Daniel Vetter
Cheers, Daniel
> ---
> drivers/gpu/drm/ttm/ttm_bo_util.c| 56 ++--
> drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 16
> include/drm/ttm/ttm_bo_api.h | 4 --
> 3 files changed, 12 insertions(+), 64 deletions(-)
>
> diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c
> b/drivers/gpu/drm/ttm/ttm_bo_util.c
> index 52d2b71f1588..f09b096ba4fd 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo_util.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
> @@ -257,54 +257,6 @@ static int ttm_copy_io_page(void *dst, void *src,
> unsigned long page)
> return 0;
> }
>
> -#ifdef CONFIG_X86
> -#define __ttm_kmap_atomic_prot(__page, __prot) kmap_atomic_prot(__page,
> __prot)
> -#define __ttm_kunmap_atomic(__addr) kunmap_atomic(__addr)
> -#else
> -#define __ttm_kmap_atomic_prot(__page, __prot) vmap(&__page, 1, 0, __prot)
> -#define __ttm_kunmap_atomic(__addr) vunmap(__addr)
> -#endif
> -
> -
> -/**
> - * ttm_kmap_atomic_prot - Efficient kernel map of a single page with
> - * specified page protection.
> - *
> - * @page: The page to map.
> - * @prot: The page protection.
> - *
> - * This function maps a TTM page using the kmap_atomic api if available,
> - * otherwise falls back to vmap. The user must make sure that the
> - * specified page does not have an aliased mapping with a different caching
> - * policy unless the architecture explicitly allows it. Also mapping and
> - * unmapping using this api must be correctly nested. Unmapping should
> - * occur in the reverse order of mapping.
> - */
> -void *ttm_kmap_atomic_prot(struct page *page, pgprot_t prot)
> -{
> - if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL))
> - return kmap_atomic(page);
> - else
> - return __ttm_kmap_atomic_prot(page, prot);
> -}
> -EXPORT_SYMBOL(ttm_kmap_atomic_prot);
> -
> -/**
> - * ttm_kunmap_atomic_prot - Unmap a page that was mapped using
> - * ttm_kmap_atomic_prot.
> - *
> - * @addr: The virtual address from the map.
> - * @prot: The page protection.
> - */
> -void ttm_kunmap_atomic_prot(void *addr, pgprot_t prot)
> -{
> - if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL))
> - kunmap_atomic(addr);
> - else
> - __ttm_kunmap_atomic(addr);
> -}
> -EXPORT_SYMBOL(ttm_kunmap_atomic_prot);
> -
> static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src,
> unsigned long page,
> pgprot_t prot)
> @@ -316,13 +268,13 @@ static int ttm_copy_io_ttm_page(struct ttm_tt *ttm,
> void *src,
> return -ENOMEM;
>
> src = (void *)((unsigned long)src + (page << PAGE_SHIFT));
> - dst = ttm_kmap_atomic_prot(d, prot);
> + dst = kmap_atomic_prot(d, prot);
> if (!dst)
> return -ENOMEM;
>
> memcpy_fromio(dst, src, PAGE_SIZE);
>
> - ttm_kunmap_atomic_prot(dst, prot);
> + kunmap_atomic(dst);
>
> return 0;
> }
> @@ -338,13 +290,13 @@ static int ttm_copy_ttm_io_page(struct ttm_tt *ttm,
> void *dst,
> return -ENOMEM;
>
> dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT));
> - src = ttm_kmap_atomic_prot(s, prot);
> + src = kmap_atomic_prot(s, prot);
> if (!src)
> return -ENOMEM;
>
> memcpy_toio(dst, src, PAGE_SIZE);
>
> - ttm_kunmap_atomic_prot(src, prot);
> + kunmap_atomic(src);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> index bb46ca0c458f..94d456a1d1a9 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
> @@ -374,12 +374,12 @@ static int vmw_bo_cpu_blit_line(struct
> vmw_bo_blit_line_data *d,
> copy_size = min_t(u32, copy_size, PAGE_SIZE -
> src_page_offset);
>
> if (unmap_src) {
> - ttm_kunmap_atomic_prot(d->src_addr, d->src_prot);
> + kunmap_atomic(d->src_addr);
> d->src_addr = NULL;
> }
>
> if (unmap_dst) {
> - ttm_kunmap_atomic_prot(d->dst_addr, d->dst_prot);
> + kunmap_atomic(d->dst_addr);
> d->dst_addr = NULL;
> }
>
> @@ -388,8 +388,8 @@ static int vmw_bo_cpu_blit_line(struct
> vmw_bo_blit_line_data *d,
> return -EINVAL;
>
> d->dst_addr =
> - ttm_kmap_atomic_prot(d->dst_pages[dst_page],
> -
