From: Nicholas Piggin <npiggin@gmail.com> To: linux-arch@vger.kernel.org Cc: Nicholas Piggin <npiggin@gmail.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Arnd Bergmann <arnd@arndb.de>, Vineet Gupta <vgupta@synopsys.com>, linux-snps-arc@lists.infradead.org Subject: [PATCH v2 03/23] arc: use asm-generic/mmu_context.h for no-op implementations Date: Thu, 27 Aug 2020 00:52:29 +1000 [thread overview] Message-ID: <20200826145249.745432-4-npiggin@gmail.com> (raw) In-Reply-To: <20200826145249.745432-1-npiggin@gmail.com> 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 | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/arc/include/asm/mmu_context.h b/arch/arc/include/asm/mmu_context.h index 3a5e6a5b9ed6..df164066e172 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 +155,13 @@ 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 (in asm-generic) 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 +170,7 @@ 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
WARNING: multiple messages have this Message-ID (diff)
From: Nicholas Piggin <npiggin@gmail.com> To: linux-arch@vger.kernel.org Cc: Arnd Bergmann <arnd@arndb.de>, Vineet Gupta <vgupta@synopsys.com>, linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>, linux-mm@kvack.org, linux-snps-arc@lists.infradead.org Subject: [PATCH v2 03/23] arc: use asm-generic/mmu_context.h for no-op implementations Date: Thu, 27 Aug 2020 00:52:29 +1000 [thread overview] Message-ID: <20200826145249.745432-4-npiggin@gmail.com> (raw) In-Reply-To: <20200826145249.745432-1-npiggin@gmail.com> 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 | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/arc/include/asm/mmu_context.h b/arch/arc/include/asm/mmu_context.h index 3a5e6a5b9ed6..df164066e172 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 +155,13 @@ 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 (in asm-generic) 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 +170,7 @@ 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 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
next prev parent reply other threads:[~2020-08-26 14:57 UTC|newest] Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-26 14:52 [PATCH v2 00/23] Use asm-generic for mmu_context no-op functions Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 01/23] asm-generic: add generic MMU versions of mmu context functions Nicholas Piggin 2020-08-26 18:13 ` kernel test robot 2020-08-26 18:13 ` kernel test robot 2020-09-01 6:49 ` Mike Rapoport 2020-09-01 7:14 ` Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 02/23] alpha: use asm-generic/mmu_context.h for no-op implementations Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin [this message] 2020-08-26 14:52 ` [PATCH v2 03/23] arc: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 04/23] arm: " Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 05/23] arm64: " Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin 2020-08-26 15:25 ` Catalin Marinas 2020-08-26 15:25 ` Catalin Marinas 2020-08-26 16:20 ` Nicholas Piggin 2020-08-26 16:20 ` Nicholas Piggin 2020-10-27 9:59 ` Naresh Kamboju 2020-10-27 9:59 ` Naresh Kamboju 2020-10-27 9:59 ` Naresh Kamboju 2020-10-27 15:08 ` Arnd Bergmann 2020-08-26 18:42 ` kernel test robot 2020-08-26 18:42 ` kernel test robot 2020-08-26 18:42 ` kernel test robot 2020-08-26 18:57 ` kernel test robot 2020-08-26 18:57 ` kernel test robot 2020-08-26 18:57 ` kernel test robot 2020-08-26 23:55 ` kernel test robot 2020-08-26 23:55 ` kernel test robot 2020-08-26 23:55 ` kernel test robot 2020-08-26 14:52 ` [PATCH v2 06/23] csky: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 07/23] hexagon: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 08/23] ia64: " Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 09/23] m68k: " Nicholas Piggin 2020-08-27 9:33 ` Geert Uytterhoeven 2020-08-27 9:33 ` Geert Uytterhoeven 2020-09-01 6:23 ` Nicholas Piggin 2020-09-01 7:03 ` Geert Uytterhoeven 2020-09-01 7:03 ` Geert Uytterhoeven 2020-09-01 7:50 ` Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 10/23] microblaze: " Nicholas Piggin 2020-08-31 14:15 ` Michal Simek 2020-09-01 6:15 ` Nicholas Piggin 2020-09-01 6:41 ` Michal Simek 2020-09-01 7:09 ` Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 11/23] mips: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 12/23] nds32: " Nicholas Piggin 2020-08-28 10:09 ` Greentime Hu 2020-08-28 10:09 ` Greentime Hu 2020-08-26 14:52 ` [PATCH v2 13/23] nios2: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 14/23] openrisc: " Nicholas Piggin 2020-08-26 14:52 ` [OpenRISC] " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 15/23] parisc: " Nicholas Piggin 2020-08-29 9:09 ` Helge Deller 2020-08-26 14:52 ` [PATCH v2 16/23] powerpc: " Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin 2020-09-01 7:30 ` Michael Ellerman 2020-09-01 7:30 ` Michael Ellerman 2020-08-26 14:52 ` [PATCH v2 17/23] riscv: " Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin 2020-08-26 16:42 ` Pekka Enberg 2020-08-26 16:42 ` Pekka Enberg 2020-08-26 16:42 ` Pekka Enberg 2020-08-26 14:52 ` [PATCH v2 18/23] s390: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 19/23] sh: " Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 20/23] sparc: " Nicholas Piggin 2020-08-26 14:52 ` Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 21/23] um: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 22/23] x86: " Nicholas Piggin 2020-08-26 14:52 ` [PATCH v2 23/23] xtensa: " Nicholas Piggin 2020-08-26 20:12 ` [PATCH v2 00/23] Use asm-generic for mmu_context no-op functions Arnd Bergmann 2020-08-26 20:12 ` Arnd Bergmann 2020-08-30 10:18 ` Mike Rapoport 2020-09-01 6:17 ` Nicholas Piggin 2020-09-01 6:54 ` Mike Rapoport
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