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Subject[PATCH v2] powerpc/ptdump: don't entirely rebuild kernel when selecting CONFIG_PPC_DEBUG_WX
Date
Selecting CONFIG_PPC_DEBUG_WX only impacts ptdump and pgtable_32/64
init calls. Declaring related functions in asm/pgtable.h implies
rebuilding almost everything.

Move ptdump_check_wx() declaration in mm/mmu_decl.h

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
v2: use mm/mmu_decl.h instead of a new asm/ptdump.h
---
arch/powerpc/include/asm/pgtable.h | 6 ------
arch/powerpc/mm/mmu_decl.h | 6 ++++++
arch/powerpc/mm/ptdump/ptdump.c | 2 ++
3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 0e4ec8cc37b7..8cc543ed114c 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -94,12 +94,6 @@ void mark_initmem_nx(void);
static inline void mark_initmem_nx(void) { }
#endif

-#ifdef CONFIG_PPC_DEBUG_WX
-void ptdump_check_wx(void);
-#else
-static inline void ptdump_check_wx(void) { }
-#endif
-
/*
* When used, PTE_FRAG_NR is defined in subarch pgtable.h
* so we are sure it is included when arriving here.
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 8e99649c24fc..7097e07a209a 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -181,3 +181,9 @@ void mmu_mark_rodata_ro(void);
static inline void mmu_mark_initmem_nx(void) { }
static inline void mmu_mark_rodata_ro(void) { }
#endif
+
+#ifdef CONFIG_PPC_DEBUG_WX
+void ptdump_check_wx(void);
+#else
+static inline void ptdump_check_wx(void) { }
+#endif
diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c
index 2f9ddc29c535..4af0d5d9589e 100644
--- a/arch/powerpc/mm/ptdump/ptdump.c
+++ b/arch/powerpc/mm/ptdump/ptdump.c
@@ -24,6 +24,8 @@
#include <asm/page.h>
#include <asm/pgalloc.h>

+#include <mm/mmu_decl.h>
+
#include "ptdump.h"

/*
--
2.13.3
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