diff mbox series

[V3,29/37] ARM: mm: Replace kmap_atomic_pfn()

Message ID 20201103095859.538827102@linutronix.de (mailing list archive)
State Not Applicable
Headers show
Series mm/highmem: Preemptible variant of kmap_atomic & friends | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/merge (09a0972ac14f67d600aa3c80035367a8074e90eb)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/next (3cea11cd5e3b00d91caf0b4730194039b45c5891)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linus/master (b7cbaf59f62f8ab8f157698f9e31642bff525bd0)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/fixes (99f070b62322a4b8c1252952735806d09eb44b68)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linux-next (c50585161e791d5ddb924da98741fdf413a0480a)
snowpatch_ozlabs/apply_patch fail Failed to apply to any branch

Commit Message

Thomas Gleixner Nov. 3, 2020, 9:27 a.m. UTC 
There is no requirement to disable pagefaults and preemption for these
cache management mappings.

Replace kmap_atomic_pfn() with kmap_local_pfn(). This allows to remove
kmap_atomic_pfn() in the next step.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
---
V3: New patch
---
 arch/arm/mm/cache-feroceon-l2.c |    6 +++---
 arch/arm/mm/cache-xsc3l2.c      |    4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)
diff mbox series

Patch

--- a/arch/arm/mm/cache-feroceon-l2.c
+++ b/arch/arm/mm/cache-feroceon-l2.c
@@ -49,9 +49,9 @@  static inline unsigned long l2_get_va(un
 	 * we simply install a virtual mapping for it only for the
 	 * TLB lookup to occur, hence no need to flush the untouched
 	 * memory mapping afterwards (note: a cache flush may happen
-	 * in some circumstances depending on the path taken in kunmap_atomic).
+	 * in some circumstances depending on the path taken in kunmap_local).
 	 */
-	void *vaddr = kmap_atomic_pfn(paddr >> PAGE_SHIFT);
+	void *vaddr = kmap_local_pfn(paddr >> PAGE_SHIFT);
 	return (unsigned long)vaddr + (paddr & ~PAGE_MASK);
 #else
 	return __phys_to_virt(paddr);
@@ -61,7 +61,7 @@  static inline unsigned long l2_get_va(un
 static inline void l2_put_va(unsigned long vaddr)
 {
 #ifdef CONFIG_HIGHMEM
-	kunmap_atomic((void *)vaddr);
+	kunmap_local((void *)vaddr);
 #endif
 }
 
--- a/arch/arm/mm/cache-xsc3l2.c
+++ b/arch/arm/mm/cache-xsc3l2.c
@@ -59,7 +59,7 @@  static inline void l2_unmap_va(unsigned
 {
 #ifdef CONFIG_HIGHMEM
 	if (va != -1)
-		kunmap_atomic((void *)va);
+		kunmap_local((void *)va);
 #endif
 }
 
@@ -75,7 +75,7 @@  static inline unsigned long l2_map_va(un
 		 * in place for it.
 		 */
 		l2_unmap_va(prev_va);
-		va = (unsigned long)kmap_atomic_pfn(pa >> PAGE_SHIFT);
+		va = (unsigned long)kmap_local_pfn(pa >> PAGE_SHIFT);
 	}
 	return va + (pa_offset >> (32 - PAGE_SHIFT));
 #else