From: Ira Weiny ira.weiny@intel.com
The kmap infrastructure has been copied almost verbatim to every architecture. This series consolidates obvious duplicated code by defining core functions which call into the architectures only when needed.
Some of the k[un]map_atomic() implementations have some similarities but the similarities were not sufficient to warrant further changes.
In addition we remove a duplicate implementation of kmap() in DRM.
Testing was done by 0day to cover all the architectures I can't readily build/test.
--- Changes from V2: Collect review/acks Add kmap_prot consolidation patch from Christoph Add 3 suggested patches from Al Viro Fix include for microblaze Fix static inline for microblaze
Changes from V1: Fix bisect-ability Update commit message and fix line lengths Remove unneded kunmap_atomic_high() declarations Remove unneded kmap_atomic_high() declarations collect reviews rebase to 5.7-rc4
Changes from V0: Define kmap_flush_tlb() and make kmap() truely arch independent. Redefine the k[un]map_atomic_* code to call into the architectures for high mem pages Ensure all architectures define kmap_prot, use it appropriately, and define kmap_atomic_prot() Remove drm implementation of kmap_atomic()
Ira Weiny (15): arch/kmap: Remove BUG_ON() arch/xtensa: Move kmap build bug out of the way arch/kmap: Remove redundant arch specific kmaps arch/kunmap: Remove duplicate kunmap implementations {x86,powerpc,microblaze}/kmap: Move preempt disable arch/kmap_atomic: Consolidate duplicate code arch/kunmap_atomic: Consolidate duplicate code arch/kmap: Ensure kmap_prot visibility arch/kmap: Don't hard code kmap_prot values arch/kmap: Define kmap_atomic_prot() for all arch's drm: Remove drm specific kmap_atomic code kmap: Remove kmap_atomic_to_page() parisc/kmap: Remove duplicate kmap code sparc: Remove unnecessary includes kmap: Consolidate kmap_prot definitions
arch/arc/include/asm/highmem.h | 18 ------- arch/arc/mm/highmem.c | 28 ++-------- arch/arm/include/asm/highmem.h | 9 ---- arch/arm/mm/highmem.c | 35 ++----------- arch/csky/include/asm/highmem.h | 12 +---- arch/csky/mm/highmem.c | 56 ++++---------------- arch/microblaze/include/asm/highmem.h | 27 ---------- arch/microblaze/mm/highmem.c | 16 ++---- arch/microblaze/mm/init.c | 3 -- arch/mips/include/asm/highmem.h | 11 +--- arch/mips/mm/cache.c | 6 +-- arch/mips/mm/highmem.c | 49 +++--------------- arch/nds32/include/asm/highmem.h | 9 ---- arch/nds32/mm/highmem.c | 39 ++------------ arch/parisc/include/asm/cacheflush.h | 30 +---------- arch/powerpc/include/asm/highmem.h | 28 ---------- arch/powerpc/mm/highmem.c | 21 ++------ arch/powerpc/mm/mem.c | 3 -- arch/sparc/include/asm/highmem.h | 25 +-------- arch/sparc/mm/highmem.c | 20 ++------ arch/sparc/mm/io-unit.c | 1 - arch/sparc/mm/iommu.c | 1 - arch/x86/include/asm/fixmap.h | 1 - arch/x86/include/asm/highmem.h | 9 ---- arch/x86/mm/highmem_32.c | 50 ++---------------- arch/xtensa/include/asm/highmem.h | 27 ---------- arch/xtensa/mm/highmem.c | 22 ++++---- 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 -- include/linux/highmem.h | 74 ++++++++++++++++++++++++--- 31 files changed, 150 insertions(+), 556 deletions(-)