Hi Yury,
On 19/11/23 01:51, Yury Norov wrote:
ALSA code opencodes atomic find_and_set_bit_wrap(). Switch it to
^^^^
m68k?
dedicated function.
Signed-off-by: Yury Norov <yury.norov@xxxxxxxxx>
Looks ok to me:
Acked-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx>
Regards
Greg
---
arch/m68k/include/asm/mmu_context.h | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/arch/m68k/include/asm/mmu_context.h b/arch/m68k/include/asm/mmu_context.h
index 141bbdfad960..0419ad87a1c1 100644
--- a/arch/m68k/include/asm/mmu_context.h
+++ b/arch/m68k/include/asm/mmu_context.h
@@ -35,12 +35,11 @@ static inline void get_mmu_context(struct mm_struct *mm)
atomic_inc(&nr_free_contexts);
steal_context();
}
- ctx = next_mmu_context;
- while (test_and_set_bit(ctx, context_map)) {
- ctx = find_next_zero_bit(context_map, LAST_CONTEXT+1, ctx);
- if (ctx > LAST_CONTEXT)
- ctx = 0;
- }
+
+ do {
+ ctx = find_and_set_bit_wrap(context_map, LAST_CONTEXT + 1, next_mmu_context);
+ } while (ctx > LAST_CONTEXT);
+
next_mmu_context = (ctx + 1) & LAST_CONTEXT;
mm->context = ctx;
context_mm[ctx] = mm;
