linux-kernel - [PATCH v3 17/23] riscv: use asm-generic/mmu

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Date:   Wed,  2 Sep 2020 00:15:33 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     linux-arch@...r.kernel.org
Cc:     Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Arnd Bergmann <arnd@...db.de>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv@...ts.infradead.org, Pekka Enberg <penberg@...nel.org>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: [PATCH v3 17/23] riscv: use asm-generic/mmu_context.h for no-op implementations

Cc: Paul Walmsley <paul.walmsley@...ive.com>
Cc: Palmer Dabbelt <palmer@...belt.com>
Cc: Albert Ou <aou@...s.berkeley.edu>
Cc: linux-riscv@...ts.infradead.org
Reviewed-by: Pekka Enberg <penberg@...nel.org>
Acked-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
Signed-off-by: Nicholas Piggin <npiggin@...il.com>
---
 arch/riscv/include/asm/mmu_context.h | 22 ++--------------------
 1 file changed, 2 insertions(+), 20 deletions(-)

diff --git a/arch/riscv/include/asm/mmu_context.h b/arch/riscv/include/asm/mmu_context.h
index 67c463812e2d..250defa06f3a 100644
--- a/arch/riscv/include/asm/mmu_context.h
+++ b/arch/riscv/include/asm/mmu_context.h
@@ -13,34 +13,16 @@
 #include <linux/mm.h>
 #include <linux/sched.h>
 
-static inline void enter_lazy_tlb(struct mm_struct *mm,
-	struct task_struct *task)
-{
-}
-
-/* Initialize context-related info for a new mm_struct */
-static inline int init_new_context(struct task_struct *task,
-	struct mm_struct *mm)
-{
-	return 0;
-}
-
-static inline void destroy_context(struct mm_struct *mm)
-{
-}
-
 void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	struct task_struct *task);
 
+#define activate_mm activate_mm
 static inline void activate_mm(struct mm_struct *prev,
 			       struct mm_struct *next)
 {
 	switch_mm(prev, next, NULL);
 }
 
-static inline void deactivate_mm(struct task_struct *task,
-	struct mm_struct *mm)
-{
-}
+#include <asm-generic/mmu_context.h>
 
 #endif /* _ASM_RISCV_MMU_CONTEXT_H */
-- 
2.23.0