linux-kernel - [PATCH v2 21/23] um: use asm-generic/mmu

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Date:   Thu, 27 Aug 2020 00:52:47 +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>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        linux-um@...ts.infradead.org
Subject: [PATCH v2 21/23] um: use asm-generic/mmu_context.h for no-op implementations

Cc: Jeff Dike <jdike@...toit.com>
Cc: Richard Weinberger <richard@....at>
Cc: Anton Ivanov <anton.ivanov@...bridgegreys.com>
Cc: linux-um@...ts.infradead.org
Signed-off-by: Nicholas Piggin <npiggin@...il.com>
---
 arch/um/include/asm/mmu_context.h | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
index 17ddd4edf875..f8a100770691 100644
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -37,10 +37,9 @@ static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
  * end asm-generic/mm_hooks.h functions
  */
 
-#define deactivate_mm(tsk,mm)	do { } while (0)
-
 extern void force_flush_all(void);
 
+#define activate_mm activate_mm
 static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
 {
 	/*
@@ -66,13 +65,12 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	}
 }
 
-static inline void enter_lazy_tlb(struct mm_struct *mm, 
-				  struct task_struct *tsk)
-{
-}
-
+#define init_new_context init_new_context
 extern int init_new_context(struct task_struct *task, struct mm_struct *mm);
 
+#define destroy_context destroy_context
 extern void destroy_context(struct mm_struct *mm);
 
+#include <asm-generic/mmu_context.h>
+
 #endif
-- 
2.23.0