linux-kernel - Re: [PATCH 0/4] Introduce <linux/mm

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Date:	Wed, 28 Jan 2015 22:45:44 +0200
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] Introduce <linux/mm_struct.h>

On Wed, Jan 28, 2015 at 10:50:52AM -0800, Guenter Roeck wrote:
> On Wed, Jan 28, 2015 at 03:17:40PM +0200, Kirill A. Shutemov wrote:
> > This patchset moves definition of mm_struct into separate header file.
> > It allows to get rid of nr_pmds if PMD page table level is folded.
> > We cannot do it with current mm_types.h because we need
> > __PAGETABLE_PMD_FOLDED from <asm/pgtable.h> which creates circular
> > dependencies.
> > 
> > I've done few build tests and looks like it works, but I expect breakage
> > on some configuration. Please test.
> > 
> Doesn't look good.
> 
> Build results:
> 	total: 134 pass: 63 fail: 71
> Failed builds:
> 	arm:s3c2410_defconfig
> 	arm:omap2plus_defconfig
> 	arm:imx_v6_v7_defconfig
> 	arm:ixp4xx_defconfig
> 	arm:u8500_defconfig
> 	arm:multi_v5_defconfig
> 	arm:multi_v7_defconfig
> 	arm:omap1_defconfig
> 	arm:footbridge_defconfig
> 	arm:davinci_all_defconfig
> 	arm:mini2440_defconfig
> 	arm:rpc_defconfig
> 	arm:axm55xx_defconfig
> 	arm:mxs_defconfig
> 	arm:keystone_defconfig
> 	arm:vexpress_defconfig
> 	arm:imx_v4_v5_defconfig
> 	arm:at91_dt_defconfig
> 	arm:s3c6400_defconfig
> 	arm:lpc32xx_defconfig
> 	arm:shmobile_defconfig
> 	arm:nhk8815_defconfig
> 	arm:bcm2835_defconfig
> 	arm:sama5_defconfig
> 	arm:orion5x_defconfig
> 	arm:exynos_defconfig
> 	arm:cm_x2xx_defconfig
> 	arm:s5pv210_defconfig
> 	arm:integrator_defconfig
> 	arm:msm_defconfig
> 	arm:pxa910_defconfig
> 	arm:clps711x_defconfig

Could you try this for arm?

diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index f40354198bad..bb4ae035e5e3 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -24,9 +24,6 @@
 #include <asm/memory.h>
 #include <asm/pgtable-hwdef.h>
 
-
-#include <asm/tlbflush.h>
-
 #ifdef CONFIG_ARM_LPAE
 #include <asm/pgtable-3level.h>
 #else
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index ce727d47275c..b5e764e0d5a8 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -3,6 +3,7 @@
 #include <linux/vmalloc.h>
 
 #include <asm/pgtable.h>
+#include <asm/tlbflush.h>
 
 /* the upper-most page table pointer */
 extern pmd_t *top_pmd;
-- 
 Kirill A. Shutemov
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