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Subject[PATCH 03/24] arc: use asm-generic/mmu_context.h for no-op implementations
Date
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/arc/include/asm/mmu_context.h | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arc/include/asm/mmu_context.h b/arch/arc/include/asm/mmu_context.h
index 3a5e6a5b9ed6..586d31902a99 100644
--- a/arch/arc/include/asm/mmu_context.h
+++ b/arch/arc/include/asm/mmu_context.h
@@ -102,6 +102,7 @@ static inline void get_new_mmu_context(struct mm_struct *mm)
* Initialize the context related info for a new mm_struct
* instance.
*/
+#define init_new_context init_new_context
static inline int
init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
@@ -113,6 +114,7 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
return 0;
}

+#define destroy_context destroy_context
static inline void destroy_context(struct mm_struct *mm)
{
unsigned long flags;
@@ -153,13 +155,12 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
}

/*
- * Called at the time of execve() to get a new ASID
- * Note the subtlety here: get_new_mmu_context() behaves differently here
- * vs. in switch_mm(). Here it always returns a new ASID, because mm has
- * an unallocated "initial" value, while in latter, it moves to a new ASID,
- * only if it was unallocated
+ * activate_mm defaults to switch_mm and is called at the time of execve() to
+ * get a new ASID Note the subtlety here: get_new_mmu_context() behaves
+ * differently here vs. in switch_mm(). Here it always returns a new ASID,
+ * because mm has an unallocated "initial" value, while in latter, it moves to
+ * a new ASID, only if it was unallocated
*/
-#define activate_mm(prev, next) switch_mm(prev, next, NULL)

/* it seemed that deactivate_mm( ) is a reasonable place to do book-keeping
* for retiring-mm. However destroy_context( ) still needs to do that because
@@ -168,8 +169,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
* there is a good chance that task gets sched-out/in, making it's ASID valid
* again (this teased me for a whole day).
*/
-#define deactivate_mm(tsk, mm) do { } while (0)

-#define enter_lazy_tlb(mm, tsk)
+#include <asm-generic/mmu_context.h>

#endif /* __ASM_ARC_MMU_CONTEXT_H */
--
2.23.0
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