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m68k: mark PMD folded and expose number of page table levels 

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

Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page
table levels folded.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.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>
This commit is contained in:
Kirill A. Shutemov 2015-04-14 15:45:48 -07:00 committed by Linus Torvalds
parent 4d66bcc7cf
commit 980d5b7387
1 changed files with 4 additions and 0 deletions
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arch/m68k/Kconfig
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@ -67,6 +67,10 @@ config HZ
default 1000 if CLEOPATRA
default 100
config PGTABLE_LEVELS
default 2 if SUN3 || COLDFIRE
default 3
source "init/Kconfig"
source "kernel/Kconfig.freezer"