From: Michael Ellerman <mpe@ellerman.id.au>
To: <linuxppc-dev@ozlabs.org>
Cc: <linux-kernel@vger.kernel.org>, aneesh.kumar@in.ibm.com
Subject: [PATCH 3/6] powerpc: Make STRICT_MM_TYPECHECKS a config option
Date: Wed, 25 Mar 2015 20:11:56 +1100 [thread overview]
Message-ID: <1427274719-25890-3-git-send-email-mpe@ellerman.id.au> (raw)
In-Reply-To: <1427274719-25890-1-git-send-email-mpe@ellerman.id.au>
The STRICT_MM_TYPECHECKS code has bit-rotted over the years. To make it
possible to easily build test it, make it a CONFIG option.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/Kconfig.debug | 8 ++++++++
arch/powerpc/include/asm/page.h | 4 +---
arch/powerpc/include/asm/pgtable-ppc64.h | 2 +-
3 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index ec2e40f2cc11..777108f4acab 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -19,6 +19,14 @@ config PPC_WERROR
depends on !PPC_DISABLE_WERROR
default y
+config STRICT_MM_TYPECHECKS
+ bool "Do extra type checking on mm types"
+ default n
+ help
+ This option turns on extra type checking for some mm related types.
+
+ If you don't know what this means, say N.
+
config PRINT_STACK_DEPTH
int "Stack depth to print" if DEBUG_KERNEL
default 64
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 69c059887a2c..71294a6e976e 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -278,9 +278,7 @@ extern long long virt_phys_offset;
#ifndef __ASSEMBLY__
-#undef STRICT_MM_TYPECHECKS
-
-#ifdef STRICT_MM_TYPECHECKS
+#ifdef CONFIG_STRICT_MM_TYPECHECKS
/* These are used to make use of C type-checking. */
/* PTE level */
diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
index 43e6ad424c7f..f951d9cf358a 100644
--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -118,7 +118,7 @@
*/
#ifndef __real_pte
-#ifdef STRICT_MM_TYPECHECKS
+#ifdef CONFIG_STRICT_MM_TYPECHECKS
#define __real_pte(e,p) ((real_pte_t){(e)})
#define __rpte_to_pte(r) ((r).pte)
#else
--
2.1.0
next prev parent reply other threads:[~2015-03-25 9:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-25 9:11 [PATCH 1/6] powerpc/mm: Remove duplicate declaration of setbat() Michael Ellerman
2015-03-25 9:11 ` [PATCH 2/6] powerpc/mm: Change setbat() to take a pgprot_t rather than flags Michael Ellerman
2015-03-25 9:11 ` Michael Ellerman [this message]
2015-03-25 9:11 ` [PATCH 4/6] powerpc: Fix compile errors with STRICT_MM_TYPECHECKS enabled Michael Ellerman
2015-03-25 9:11 ` [PATCH 5/6] mm/gup: Replace ACCESS_ONCE with READ_ONCE for STRICT_MM_TYPECHECKS Michael Ellerman
2015-03-25 9:18 ` Christian Borntraeger
2015-03-25 9:24 ` Michael Ellerman
2015-03-25 9:11 ` [RFC PATCH 6/6] powerpc: Always enable STRICT_MM_TYPECHECKS Michael Ellerman
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