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powerpc/book3s_32: Fix build error with checkpoint restart 

In file included from mm/vmscan.c:54:0:
include/linux/swapops.h: In function ‘pte_to_swp_entry’:
include/linux/swapops.h:69:2: error: implicit declaration of function ‘pte_swp_soft_dirty’ [-Werror=implicit-function-declaration]
  if (pte_swp_soft_dirty(pte))
  ^
include/linux/swapops.h:70:3: error: implicit declaration of function ‘pte_swp_clear_soft_dirty’ [-Werror=implicit-function-declaration]
   pte = pte_swp_clear_soft_dirty(pte);

We support soft dirty tracking only with book3s 64 for now.
So change the Kconfig dependency accordingly. Also CHECKPOINT_RESTORE
feature is not really dependent on SOFT_DIRTY. We track the dependency
between MEM_SOFT_DIRTY and ARCH_SOFT_DIRTY through headers

Fixes: 7207f43665 ("powerpc/mm: Add page soft dirty tracking")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-01-29 22:32:49 +05:30 committed by Michael Ellerman
parent 2d19fc6395
commit 19f97c9830
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/Kconfig
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@ -557,7 +557,7 @@ choice
config PPC_4K_PAGES
bool "4k page size"
select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
config PPC_16K_PAGES
bool "16k page size"
@ -566,7 +566,7 @@ config PPC_16K_PAGES
config PPC_64K_PAGES
bool "64k page size"
depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
config PPC_256K_PAGES
bool "256k page size"