mips: expose number of page table levels on Kconfig level
authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Tue, 14 Apr 2015 22:45:51 +0000 (15:45 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 14 Apr 2015 23:49:02 +0000 (16:49 -0700)
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>
arch/mips/Kconfig

index c7a16904cd03c705333f645419ec07888fc6fd87..a9d112d2a135af2ac6064a52d61f490c00bac29b 100644 (file)
@@ -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"