Commit c81956c9 authored Apr 14, 2015 by Kirill A. Shutemov Committed by Linus Torvalds Apr 14, 2015

s390: 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: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
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>

parent 06ef42a1

arch/s390/Kconfig

+5 −0

Original line number	Diff line number	Diff line
		@@ -155,6 +155,11 @@ config S390
		config SCHED_OMIT_FRAME_POINTER
		def_bool y

		config PGTABLE_LEVELS
		int
		default 4 if 64BIT
		default 2

		source "init/Kconfig"

		source "kernel/Kconfig.freezer"

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