drm: Document drm_cache interface (f0e36723) · Commits · 戴 / test

Documentation/gpu/drm-mm.rst

+6 −0

Original line number	Diff line number	Diff line
		@@ -470,3 +470,9 @@ DRM MM Range Allocator Function References

		.. kernel-doc:: include/drm/drm_mm.h
		:internal:

		DRM Cache Handling
		==================

		.. kernel-doc:: drivers/gpu/drm/drm_cache.c
		:export:

+23 −0

Original line number	Diff line number	Diff line
		@@ -67,6 +67,14 @@ static void drm_cache_flush_clflush(struct page *pages[],
		}
		#endif

		/**
		* drm_clflush_pages - Flush dcache lines of a set of pages.
		* @pages: List of pages to be flushed.
		* @num_pages: Number of pages in the array.
		*
		* Flush every data cache line entry that points to an address belonging
		* to a page in the array.
		*/
		void
		drm_clflush_pages(struct page *pages[], unsigned long num_pages)
		{
		@@ -101,6 +109,13 @@ drm_clflush_pages(struct page *pages[], unsigned long num_pages)
		}
		EXPORT_SYMBOL(drm_clflush_pages);

		/**
		* drm_clflush_sg - Flush dcache lines pointing to a scather-gather.
		* @st: struct sg_table.
		*
		* Flush every data cache line entry that points to an address in the
		* sg.
		*/
		void
		drm_clflush_sg(struct sg_table *st)
		{
		@@ -125,6 +140,14 @@ drm_clflush_sg(struct sg_table *st)
		}
		EXPORT_SYMBOL(drm_clflush_sg);

		/**
		* drm_clflush_virt_range - Flush dcache lines of a region
		* @addr: Initial kernel memory address.
		* @length: Region size.
		*
		* Flush every data cache line entry that points to an address in the
		* region requested.
		*/
		void
		drm_clflush_virt_range(void *addr, unsigned long length)
		{