From: Tejun Heo <tj@kernel.org>
To: linux-kernel@vger.kernel.org, x86@kernel.org,
linux-arch@vger.kernel.org, mingo@elte.hu, kyle@mcmartin.ca,
cl@linux-foundation.org, Jesper.Nilsson@axis.com,
benh@kernel.crashing.org
Cc: Jesper Nilsson <jesper.nilsson@axis.com>, Tejun Heo <tj@kernel.org>
Subject: [PATCH 03/10] CRIS: Change DEFINE_PER_CPU of current_pgd to be non volatile.
Date: Wed, 24 Jun 2009 15:45:17 +0900 [thread overview]
Message-ID: <1245825924-30412-4-git-send-email-tj@kernel.org> (raw)
In-Reply-To: <1245825924-30412-1-git-send-email-tj@kernel.org>
From: Jesper Nilsson <jesper.nilsson@axis.com>
The DEFINE_PER_CPU of current_pgd was on CRIS defined using volatile,
which is not needed. Remove volatile.
Tested on an ARTPEC-3 (CRISv32) board.
tj: extern DEFINE_PER_CPU() replaced with DECLARE_PER_CPU()
[ Impact: code cleanup ]
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---
arch/cris/include/asm/mmu_context.h | 3 ++-
arch/cris/mm/fault.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/cris/include/asm/mmu_context.h b/arch/cris/include/asm/mmu_context.h
index 72ba08d..1d45fd6 100644
--- a/arch/cris/include/asm/mmu_context.h
+++ b/arch/cris/include/asm/mmu_context.h
@@ -17,7 +17,8 @@ extern void switch_mm(struct mm_struct *prev, struct mm_struct *next,
* registers like cr3 on the i386
*/
-extern volatile DEFINE_PER_CPU(pgd_t *,current_pgd); /* defined in arch/cris/mm/fault.c */
+/* defined in arch/cris/mm/fault.c */
+DECLARE_PER_CPU(pgd_t *, current_pgd);
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
diff --git a/arch/cris/mm/fault.c b/arch/cris/mm/fault.c
index f925115..4a7cdd9 100644
--- a/arch/cris/mm/fault.c
+++ b/arch/cris/mm/fault.c
@@ -29,7 +29,7 @@ extern void die_if_kernel(const char *, struct pt_regs *, long);
/* current active page directory */
-volatile DEFINE_PER_CPU(pgd_t *,current_pgd);
+DEFINE_PER_CPU(pgd_t *, current_pgd);
unsigned long cris_signal_return_page;
/*
--
1.6.0.2
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: linux-kernel@vger.kernel.org, x86@kernel.org,
linux-arch@vger.kernel.org, mingo@elte.hu, kyle@mcmartin.ca,
cl@linux-foundation.org, Jesper.Nilsson@axis.com,
benh@kernel.crashing.org, paulmck@linux.vnet.ibm.com,
rusty@rustcorp.com.au, torvalds@linux-foundation.org,
akpm@linux-foundation.org
Cc: Jesper Nilsson <jesper.nilsson@axis.com>, Tejun Heo <tj@kernel.org>
Subject: [PATCH 03/10] CRIS: Change DEFINE_PER_CPU of current_pgd to be non volatile.
Date: Wed, 24 Jun 2009 15:45:17 +0900 [thread overview]
Message-ID: <1245825924-30412-4-git-send-email-tj@kernel.org> (raw)
Message-ID: <20090624064517.LMKCCl_PIObZHd492TYkAllh9PV0Z5Y9RY3Pc6Lzpb8@z> (raw)
In-Reply-To: <1245825924-30412-1-git-send-email-tj@kernel.org>
From: Jesper Nilsson <jesper.nilsson@axis.com>
The DEFINE_PER_CPU of current_pgd was on CRIS defined using volatile,
which is not needed. Remove volatile.
Tested on an ARTPEC-3 (CRISv32) board.
tj: extern DEFINE_PER_CPU() replaced with DECLARE_PER_CPU()
[ Impact: code cleanup ]
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---
arch/cris/include/asm/mmu_context.h | 3 ++-
arch/cris/mm/fault.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/cris/include/asm/mmu_context.h b/arch/cris/include/asm/mmu_context.h
index 72ba08d..1d45fd6 100644
--- a/arch/cris/include/asm/mmu_context.h
+++ b/arch/cris/include/asm/mmu_context.h
@@ -17,7 +17,8 @@ extern void switch_mm(struct mm_struct *prev, struct mm_struct *next,
* registers like cr3 on the i386
*/
-extern volatile DEFINE_PER_CPU(pgd_t *,current_pgd); /* defined in arch/cris/mm/fault.c */
+/* defined in arch/cris/mm/fault.c */
+DECLARE_PER_CPU(pgd_t *, current_pgd);
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
diff --git a/arch/cris/mm/fault.c b/arch/cris/mm/fault.c
index f925115..4a7cdd9 100644
--- a/arch/cris/mm/fault.c
+++ b/arch/cris/mm/fault.c
@@ -29,7 +29,7 @@ extern void die_if_kernel(const char *, struct pt_regs *, long);
/* current active page directory */
-volatile DEFINE_PER_CPU(pgd_t *,current_pgd);
+DEFINE_PER_CPU(pgd_t *, current_pgd);
unsigned long cris_signal_return_page;
/*
--
1.6.0.2
next prev parent reply other threads:[~2009-06-24 6:46 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-24 6:45 [PATCHSET core/percpu] percpu: convert most archs to dynamic percpu, take#4 Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 6:45 ` [PATCH 01/10] percpu: use dynamic percpu allocator as the default percpu allocator Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 23:47 ` James Bottomley
2009-06-25 2:55 ` Tejun Heo
2009-06-26 15:13 ` James Bottomley
2009-06-27 3:21 ` Tejun Heo
2009-06-25 4:44 ` Paul Mundt
2009-06-24 6:45 ` [PATCH 02/10] linker script: throw away .discard section Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 17:20 ` Luck, Tony
2009-06-24 17:20 ` Luck, Tony
2009-06-24 6:45 ` Tejun Heo [this message]
2009-06-24 6:45 ` [PATCH 03/10] CRIS: Change DEFINE_PER_CPU of current_pgd to be non volatile Tejun Heo
2009-06-24 6:45 ` [PATCH 04/10] percpu: cleanup percpu array definitions Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 6:45 ` [PATCH 05/10] percpu: use DEFINE_PER_CPU_SHARED_ALIGNED() Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-29 23:25 ` Christoph Lameter
2009-06-24 6:45 ` [PATCH 06/10] percpu: clean up percpu variable definitions Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 6:45 ` [PATCH 07/10] percpu: implement optional weak percpu definitions Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 6:45 ` [PATCH 08/10] alpha: kill unnecessary __used attribute in PER_CPU_ATTRIBUTES Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 6:45 ` [PATCH 09/10] alpha: switch to dynamic percpu allocator Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 6:45 ` [PATCH 10/10] s390: " Tejun Heo
2009-06-24 6:45 ` Tejun Heo
2009-06-24 8:03 ` [PATCH 11/10] sparc64: fix build breakage introduced by percpu-convert-most patchset Tejun Heo
2009-06-24 8:03 ` Tejun Heo
2009-06-24 9:00 ` David Miller
2009-06-24 9:07 ` Tejun Heo
2009-06-24 9:07 ` Tejun Heo
2009-06-27 3:22 ` [PATCHSET core/percpu] percpu: convert most archs to dynamic percpu, take#4 Tejun Heo
2009-06-27 3:22 ` Tejun Heo
2009-06-27 3:25 ` Tejun Heo
2009-06-27 3:25 ` Tejun Heo
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