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From: Andy Lutomirski <luto@kernel.org>
To: x86@kernel.org
Cc: Dave Hansen <dave.hansen@intel.com>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	Andy Lutomirski <luto@kernel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Nicholas Piggin <npiggin@gmail.com>,
	Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 3/8] membarrier: Remove membarrier_arch_switch_mm() prototype in core code
Date: Tue, 15 Jun 2021 20:21:08 -0700	[thread overview]
Message-ID: <2d45c55c4fbbe38317ff625e2a2158b6fbe0dc2d.1623813516.git.luto@kernel.org> (raw)
In-Reply-To: <cover.1623813516.git.luto@kernel.org>

membarrier_arch_switch_mm()'s sole implementation and caller are in
arch/powerpc.  Having a fallback implementation in include/linux is
confusing -- remove it.

It's still mentioned in a comment, but a subsequent patch will remove
it.

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
---
 include/linux/sched/mm.h | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index 24d97d1b6252..10aace21d25e 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -350,13 +350,6 @@ extern void membarrier_exec_mmap(struct mm_struct *mm);
 extern void membarrier_update_current_mm(struct mm_struct *next_mm);
 
 #else
-#ifdef CONFIG_ARCH_HAS_MEMBARRIER_CALLBACKS
-static inline void membarrier_arch_switch_mm(struct mm_struct *prev,
-					     struct mm_struct *next,
-					     struct task_struct *tsk)
-{
-}
-#endif
 static inline void membarrier_exec_mmap(struct mm_struct *mm)
 {
 }
-- 
2.31.1


  parent reply	other threads:[~2021-06-16  3:21 UTC|newest]

Thread overview: 165+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16  3:21 [PATCH 0/8] membarrier cleanups Andy Lutomirski
2021-06-16  3:21 ` [PATCH 1/8] membarrier: Document why membarrier() works Andy Lutomirski
2021-06-16  4:00   ` Nicholas Piggin
2021-06-16  7:30     ` Peter Zijlstra
2021-06-17 23:45       ` Andy Lutomirski
2021-06-16  3:21 ` [PATCH 2/8] x86/mm: Handle unlazying membarrier core sync in the arch code Andy Lutomirski
2021-06-16  4:25   ` Nicholas Piggin
2021-06-16 18:31     ` Andy Lutomirski
2021-06-16 17:49   ` Mathieu Desnoyers
2021-06-16 17:49     ` Mathieu Desnoyers
2021-06-16 18:31     ` Andy Lutomirski
2021-06-16  3:21 ` Andy Lutomirski [this message]
2021-06-16  4:26   ` [PATCH 3/8] membarrier: Remove membarrier_arch_switch_mm() prototype in core code Nicholas Piggin
2021-06-16 17:52   ` Mathieu Desnoyers
2021-06-16 17:52     ` Mathieu Desnoyers
2021-06-16  3:21 ` [PATCH 4/8] membarrier: Make the post-switch-mm barrier explicit Andy Lutomirski
2021-06-16  4:19   ` Nicholas Piggin
2021-06-16  7:35     ` Peter Zijlstra
2021-06-16 18:41       ` Andy Lutomirski
2021-06-17  1:37         ` Nicholas Piggin
2021-06-17  2:57           ` Andy Lutomirski
2021-06-17  5:32             ` Andy Lutomirski
2021-06-17  6:51               ` Nicholas Piggin
2021-06-17 23:49                 ` Andy Lutomirski
2021-06-19  2:53                   ` Nicholas Piggin
2021-06-19  3:20                     ` Andy Lutomirski
2021-06-19  4:27                       ` Nicholas Piggin
2021-06-17  9:08               ` [RFC][PATCH] sched: Use lightweight hazard pointers to grab lazy mms Peter Zijlstra
2021-06-17  9:10                 ` Peter Zijlstra
2021-06-17 10:00                   ` Nicholas Piggin
2021-06-17  9:13                 ` Peter Zijlstra
2021-06-17 14:06                   ` Andy Lutomirski
2021-06-17  9:28                 ` Peter Zijlstra
2021-06-17 14:03                   ` Andy Lutomirski
2021-06-17 14:10                 ` Andy Lutomirski
2021-06-17 15:45                   ` Peter Zijlstra
2021-06-18  3:29                 ` Paul E. McKenney
2021-06-18  5:04                   ` Andy Lutomirski
2021-06-17 15:02               ` [PATCH 4/8] membarrier: Make the post-switch-mm barrier explicit Paul E. McKenney
2021-06-18  0:06                 ` Andy Lutomirski
2021-06-18  3:35                   ` Paul E. McKenney
2021-06-17  8:45         ` Peter Zijlstra
2021-06-16  3:21 ` [PATCH 5/8] membarrier, kthread: Use _ONCE accessors for task->mm Andy Lutomirski
2021-06-16  4:28   ` Nicholas Piggin
2021-06-16 18:08   ` Mathieu Desnoyers
2021-06-16 18:08     ` Mathieu Desnoyers
2021-06-16 18:45     ` Andy Lutomirski
2021-06-16  3:21 ` [PATCH 6/8] powerpc/membarrier: Remove special barrier on mm switch Andy Lutomirski
2021-06-16  3:21   ` Andy Lutomirski
2021-06-16  4:36   ` Nicholas Piggin
2021-06-16  4:36     ` Nicholas Piggin
2021-06-16  3:21 ` [PATCH 7/8] membarrier: Remove arm (32) support for SYNC_CORE Andy Lutomirski
2021-06-16  3:21   ` Andy Lutomirski
2021-06-16  9:28   ` Russell King (Oracle)
2021-06-16  9:28     ` Russell King (Oracle)
2021-06-16 10:16   ` Peter Zijlstra
2021-06-16 10:16     ` Peter Zijlstra
2021-06-16 10:20     ` Peter Zijlstra
2021-06-16 10:20       ` Peter Zijlstra
2021-06-16 10:34       ` Russell King (Oracle)
2021-06-16 10:34         ` Russell King (Oracle)
2021-06-16 11:10         ` Peter Zijlstra
2021-06-16 11:10           ` Peter Zijlstra
2021-06-16 13:22           ` Russell King (Oracle)
2021-06-16 13:22             ` Russell King (Oracle)
2021-06-16 15:04             ` Catalin Marinas
2021-06-16 15:04               ` Catalin Marinas
2021-06-16 15:23               ` Russell King (Oracle)
2021-06-16 15:23                 ` Russell King (Oracle)
2021-06-16 15:45                 ` Catalin Marinas
2021-06-16 15:45                   ` Catalin Marinas
2021-06-16 16:00                   ` Catalin Marinas
2021-06-16 16:00                     ` Catalin Marinas
2021-06-16 16:27                     ` Russell King (Oracle)
2021-06-16 16:27                       ` Russell King (Oracle)
2021-06-17  8:55                       ` Krzysztof Hałasa
2021-06-17  8:55                         ` Krzysztof Hałasa
2021-06-17  8:55                         ` Krzysztof Hałasa
2021-06-18 12:54                       ` Linus Walleij
2021-06-18 12:54                         ` Linus Walleij
2021-06-18 12:54                         ` Linus Walleij
2021-06-18 13:19                         ` Russell King (Oracle)
2021-06-18 13:19                           ` Russell King (Oracle)
2021-06-18 13:36                         ` Arnd Bergmann
2021-06-18 13:36                           ` Arnd Bergmann
2021-06-18 13:36                           ` Arnd Bergmann
2021-06-17 10:40   ` Mark Rutland
2021-06-17 10:40     ` Mark Rutland
2021-06-17 11:23     ` Russell King (Oracle)
2021-06-17 11:23       ` Russell King (Oracle)
2021-06-17 11:33       ` Mark Rutland
2021-06-17 11:33         ` Mark Rutland
2021-06-17 13:41         ` Andy Lutomirski
2021-06-17 13:41           ` Andy Lutomirski
2021-06-17 13:51           ` Mark Rutland
2021-06-17 13:51             ` Mark Rutland
2021-06-17 14:00             ` Andy Lutomirski
2021-06-17 14:00               ` Andy Lutomirski
2021-06-17 14:20               ` Mark Rutland
2021-06-17 14:20                 ` Mark Rutland
2021-06-17 15:01               ` Peter Zijlstra
2021-06-17 15:01                 ` Peter Zijlstra
2021-06-17 15:13                 ` Peter Zijlstra
2021-06-17 15:13                   ` Peter Zijlstra
2021-06-17 14:16             ` Mathieu Desnoyers
2021-06-17 14:16               ` Mathieu Desnoyers
2021-06-17 14:05           ` Peter Zijlstra
2021-06-17 14:05             ` Peter Zijlstra
2021-06-18  0:07   ` Andy Lutomirski
2021-06-18  0:07     ` Andy Lutomirski
2021-06-16  3:21 ` [PATCH 8/8] membarrier: Rewrite sync_core_before_usermode() and improve documentation Andy Lutomirski
2021-06-16  3:21   ` Andy Lutomirski
2021-06-16  3:21   ` Andy Lutomirski
2021-06-16  4:45   ` Nicholas Piggin
2021-06-16  4:45     ` Nicholas Piggin
2021-06-16  4:45     ` Nicholas Piggin
2021-06-16 18:52     ` Andy Lutomirski
2021-06-16 18:52       ` Andy Lutomirski
2021-06-16 18:52       ` Andy Lutomirski
2021-06-16 23:48       ` Andy Lutomirski
2021-06-16 23:48         ` Andy Lutomirski
2021-06-16 23:48         ` Andy Lutomirski
2021-06-18 15:27       ` Christophe Leroy
2021-06-18 15:27         ` Christophe Leroy
2021-06-18 15:27         ` Christophe Leroy
2021-06-16 10:20   ` Will Deacon
2021-06-16 10:20     ` Will Deacon
2021-06-16 10:20     ` Will Deacon
2021-06-16 23:58     ` Andy Lutomirski
2021-06-16 23:58       ` Andy Lutomirski
2021-06-16 23:58       ` Andy Lutomirski
2021-06-17 14:47   ` Mathieu Desnoyers
2021-06-17 14:47     ` Mathieu Desnoyers
2021-06-17 14:47     ` Mathieu Desnoyers
2021-06-17 14:47     ` Mathieu Desnoyers
2021-06-18  0:12     ` Andy Lutomirski
2021-06-18  0:12       ` Andy Lutomirski
2021-06-18  0:12       ` Andy Lutomirski
2021-06-18 16:31       ` Mathieu Desnoyers
2021-06-18 16:31         ` Mathieu Desnoyers
2021-06-18 16:31         ` Mathieu Desnoyers
2021-06-18 16:31         ` Mathieu Desnoyers
2021-06-18 19:58         ` Andy Lutomirski
2021-06-18 19:58           ` Andy Lutomirski
2021-06-18 19:58           ` Andy Lutomirski
2021-06-18 20:09           ` Mathieu Desnoyers
2021-06-18 20:09             ` Mathieu Desnoyers
2021-06-18 20:09             ` Mathieu Desnoyers
2021-06-18 20:09             ` Mathieu Desnoyers
2021-06-19  6:02             ` Nicholas Piggin
2021-06-19  6:02               ` Nicholas Piggin
2021-06-19  6:02               ` Nicholas Piggin
2021-06-19 15:50               ` Andy Lutomirski
2021-06-19 15:50                 ` Andy Lutomirski
2021-06-19 15:50                 ` Andy Lutomirski
2021-06-20  2:10                 ` Nicholas Piggin
2021-06-20  2:10                   ` Nicholas Piggin
2021-06-20  2:10                   ` Nicholas Piggin
2021-06-17 15:16   ` Mathieu Desnoyers
2021-06-17 15:16     ` Mathieu Desnoyers
2021-06-17 15:16     ` Mathieu Desnoyers
2021-06-17 15:16     ` Mathieu Desnoyers
2021-06-18  0:13     ` Andy Lutomirski
2021-06-18  0:13       ` Andy Lutomirski
2021-06-18  0:13       ` Andy Lutomirski

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