linux-kernel - [PATCH v2 08/23] ia64: use asm-generic/mmu

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Message-Id: <20200826145249.745432-9-npiggin@gmail.com>
Date:   Thu, 27 Aug 2020 00:52:34 +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>,
        Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>, linux-ia64@...r.kernel.org
Subject: [PATCH v2 08/23] ia64: use asm-generic/mmu_context.h for no-op implementations

Cc: Tony Luck <tony.luck@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: linux-ia64@...r.kernel.org
Signed-off-by: Nicholas Piggin <npiggin@...il.com>
---
 arch/ia64/include/asm/mmu_context.h | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/arch/ia64/include/asm/mmu_context.h b/arch/ia64/include/asm/mmu_context.h
index 2da0e2eb036b..87a0d5bc11ef 100644
--- a/arch/ia64/include/asm/mmu_context.h
+++ b/arch/ia64/include/asm/mmu_context.h
@@ -49,11 +49,6 @@ DECLARE_PER_CPU(u8, ia64_need_tlb_flush);
 extern void mmu_context_init (void);
 extern void wrap_mmu_context (struct mm_struct *mm);
 
-static inline void
-enter_lazy_tlb (struct mm_struct *mm, struct task_struct *tsk)
-{
-}
-
 /*
  * When the context counter wraps around all TLBs need to be flushed because
  * an old context number might have been reused. This is signalled by the
@@ -116,6 +111,7 @@ get_mmu_context (struct mm_struct *mm)
  * Initialize context number to some sane value.  MM is guaranteed to be a
  * brand-new address-space, so no TLB flushing is needed, ever.
  */
+#define init_new_context init_new_context
 static inline int
 init_new_context (struct task_struct *p, struct mm_struct *mm)
 {
@@ -123,12 +119,6 @@ init_new_context (struct task_struct *p, struct mm_struct *mm)
 	return 0;
 }
 
-static inline void
-destroy_context (struct mm_struct *mm)
-{
-	/* Nothing to do.  */
-}
-
 static inline void
 reload_context (nv_mm_context_t context)
 {
@@ -178,11 +168,10 @@ activate_context (struct mm_struct *mm)
 	} while (unlikely(context != mm->context));
 }
 
-#define deactivate_mm(tsk,mm)	do { } while (0)
-
 /*
  * Switch from address space PREV to address space NEXT.
  */
+#define activate_mm activate_mm
 static inline void
 activate_mm (struct mm_struct *prev, struct mm_struct *next)
 {
@@ -196,5 +185,7 @@ activate_mm (struct mm_struct *prev, struct mm_struct *next)
 
 #define switch_mm(prev_mm,next_mm,next_task)	activate_mm(prev_mm, next_mm)
 
+#include <asm-generic/mmu_context.h>
+
 # endif /* ! __ASSEMBLY__ */
 #endif /* _ASM_IA64_MMU_CONTEXT_H */
-- 
2.23.0