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| author | Al Viro <viro@zeniv.linux.org.uk> | 2007-07-21 19:20:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-07-21 19:20:34 -0700 |
| commit | 378e515c867bc7b6cb33a5aa52776d3e897e7b81 (patch) | |
| tree | 8d7556218309bf2da37f462a97eaa0a4ff7eb5b8 | |
| parent | 0f516813ce5aa78b30084cd0cc2e7e2ba1777168 (diff) | |
| download | linux-378e515c867bc7b6cb33a5aa52776d3e897e7b81.tar.gz linux-378e515c867bc7b6cb33a5aa52776d3e897e7b81.tar.bz2 linux-378e515c867bc7b6cb33a5aa52776d3e897e7b81.zip | |
[SPARC32]: Make PAGE_SHARED a read-mostly variable.
same scheme as for sparc64, same rationale
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc/mm/init.c | 3 | ||||
| -rw-r--r-- | arch/sparc/mm/srmmu.c | 2 | ||||
| -rw-r--r-- | arch/sparc/mm/sun4c.c | 2 | ||||
| -rw-r--r-- | include/asm-sparc/pgtable.h | 3 |
4 files changed, 6 insertions, 4 deletions
diff --git a/arch/sparc/mm/init.c b/arch/sparc/mm/init.c index a532922e2e35..a1bef07755a9 100644 --- a/arch/sparc/mm/init.c +++ b/arch/sparc/mm/init.c @@ -308,6 +308,9 @@ extern void sun4c_paging_init(void); extern void srmmu_paging_init(void); extern void device_scan(void); +pgprot_t PAGE_SHARED __read_mostly; +EXPORT_SYMBOL(PAGE_SHARED); + void __init paging_init(void) { switch(sparc_cpu_model) { diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index ca26232da7ab..17b485f2825c 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -2154,7 +2154,7 @@ void __init ld_mmu_srmmu(void) BTFIXUPSET_SIMM13(ptrs_per_pgd, SRMMU_PTRS_PER_PGD); BTFIXUPSET_INT(page_none, pgprot_val(SRMMU_PAGE_NONE)); - BTFIXUPSET_INT(page_shared, pgprot_val(SRMMU_PAGE_SHARED)); + PAGE_SHARED = pgprot_val(SRMMU_PAGE_SHARED); BTFIXUPSET_INT(page_copy, pgprot_val(SRMMU_PAGE_COPY)); BTFIXUPSET_INT(page_readonly, pgprot_val(SRMMU_PAGE_RDONLY)); BTFIXUPSET_INT(page_kernel, pgprot_val(SRMMU_PAGE_KERNEL)); diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c index bdd835fba02e..a57a366e339a 100644 --- a/arch/sparc/mm/sun4c.c +++ b/arch/sparc/mm/sun4c.c @@ -2155,7 +2155,7 @@ void __init ld_mmu_sun4c(void) BTFIXUPSET_SIMM13(user_ptrs_per_pgd, KERNBASE / SUN4C_PGDIR_SIZE); BTFIXUPSET_INT(page_none, pgprot_val(SUN4C_PAGE_NONE)); - BTFIXUPSET_INT(page_shared, pgprot_val(SUN4C_PAGE_SHARED)); + PAGE_SHARED = pgprot_val(SUN4C_PAGE_SHARED); BTFIXUPSET_INT(page_copy, pgprot_val(SUN4C_PAGE_COPY)); BTFIXUPSET_INT(page_readonly, pgprot_val(SUN4C_PAGE_READONLY)); BTFIXUPSET_INT(page_kernel, pgprot_val(SUN4C_PAGE_KERNEL)); diff --git a/include/asm-sparc/pgtable.h b/include/asm-sparc/pgtable.h index a55f4c3488b0..2cc235b74d94 100644 --- a/include/asm-sparc/pgtable.h +++ b/include/asm-sparc/pgtable.h @@ -46,7 +46,6 @@ BTFIXUPDEF_SIMM13(user_ptrs_per_pgd) #define pgd_ERROR(e) __builtin_trap() BTFIXUPDEF_INT(page_none) -BTFIXUPDEF_INT(page_shared) BTFIXUPDEF_INT(page_copy) BTFIXUPDEF_INT(page_readonly) BTFIXUPDEF_INT(page_kernel) @@ -66,7 +65,7 @@ BTFIXUPDEF_INT(page_kernel) #define PTE_SIZE (PTRS_PER_PTE*4) #define PAGE_NONE __pgprot(BTFIXUP_INT(page_none)) -#define PAGE_SHARED __pgprot(BTFIXUP_INT(page_shared)) +extern pgprot_t PAGE_SHARED; #define PAGE_COPY __pgprot(BTFIXUP_INT(page_copy)) #define PAGE_READONLY __pgprot(BTFIXUP_INT(page_readonly)) |