From: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Date: Tue, 14 Apr 2015 22:45:51 +0000 (-0700)
Subject: mips: expose number of page table levels on Kconfig level
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=a728ab52709e2fb9659d2661ac30c901df42ef02;p=openwrt%2Fstaging%2Fblogic.git

mips: expose number of page table levels on Kconfig level

We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index c7a16904cd03..a9d112d2a135 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2600,6 +2600,11 @@ config STACKTRACE_SUPPORT
 	bool
 	default y
 
+config PGTABLE_LEVELS
+	int
+	default 3 if 64BIT && !PAGE_SIZE_64KB
+	default 2
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"