Impact: cleanup Move allocation/initialization of vDSO's pagelist for 32/64-bit vDSO into common vdso code, introducing a function for that. Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx> Cc: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx Cc: linux-mm@xxxxxxxxx Signed-off-by: Dmitry Safonov <dsafonov@xxxxxxxxxxxxx> --- arch/powerpc/kernel/vdso.c | 27 ++------------------------- arch/powerpc/kernel/vdso_common.c | 22 ++++++++++++++++++++++ 2 files changed, 24 insertions(+), 25 deletions(-) diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index 8010a0d82049..25d03d773c49 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -382,8 +382,6 @@ early_initcall(vdso_getcpu_init); static int __init vdso_init(void) { - int i; - #ifdef CONFIG_PPC64 /* * Fill up the "systemcfg" stuff for backward compatibility @@ -454,32 +452,11 @@ static int __init vdso_init(void) } #ifdef CONFIG_VDSO32 - /* Make sure pages are in the correct state */ - vdso32_pagelist = kzalloc(sizeof(struct page *) * (vdso32_pages + 2), - GFP_KERNEL); - BUG_ON(vdso32_pagelist == NULL); - for (i = 0; i < vdso32_pages; i++) { - struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE); - ClearPageReserved(pg); - get_page(pg); - vdso32_pagelist[i] = pg; - } - vdso32_pagelist[i++] = virt_to_page(vdso_data); - vdso32_pagelist[i] = NULL; + init_vdso32_pagelist(); #endif #ifdef CONFIG_PPC64 - vdso64_pagelist = kzalloc(sizeof(struct page *) * (vdso64_pages + 2), - GFP_KERNEL); - BUG_ON(vdso64_pagelist == NULL); - for (i = 0; i < vdso64_pages; i++) { - struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE); - ClearPageReserved(pg); - get_page(pg); - vdso64_pagelist[i] = pg; - } - vdso64_pagelist[i++] = virt_to_page(vdso_data); - vdso64_pagelist[i] = NULL; + init_vdso64_pagelist(); #endif /* CONFIG_PPC64 */ get_page(virt_to_page(vdso_data)); diff --git a/arch/powerpc/kernel/vdso_common.c b/arch/powerpc/kernel/vdso_common.c index ac25d66134fb..c97c30606b3f 100644 --- a/arch/powerpc/kernel/vdso_common.c +++ b/arch/powerpc/kernel/vdso_common.c @@ -14,6 +14,7 @@ #define VDSO_LBASE CONCAT3(VDSO, BITS, _LBASE) #define vdso_kbase CONCAT3(vdso, BITS, _kbase) #define vdso_pages CONCAT3(vdso, BITS, _pages) +#define vdso_pagelist CONCAT3(vdso, BITS, _pagelist) #undef pr_fmt #define pr_fmt(fmt) "vDSO" __stringify(BITS) ": " fmt @@ -202,6 +203,25 @@ static __init int vdso_setup(struct lib_elfinfo *v) return 0; } +#define init_vdso_pagelist CONCAT3(init_vdso, BITS, _pagelist) +static __init void init_vdso_pagelist(void) +{ + int i; + + /* Make sure pages are in the correct state */ + vdso_pagelist = kzalloc(sizeof(struct page *) * (vdso_pages + 2), + GFP_KERNEL); + BUG_ON(vdso_pagelist == NULL); + for (i = 0; i < vdso_pages; i++) { + struct page *pg = virt_to_page(vdso_kbase + i*PAGE_SIZE); + + ClearPageReserved(pg); + get_page(pg); + vdso_pagelist[i] = pg; + } + vdso_pagelist[i++] = virt_to_page(vdso_data); + vdso_pagelist[i] = NULL; +} #undef find_section #undef find_symbol @@ -211,10 +231,12 @@ static __init int vdso_setup(struct lib_elfinfo *v) #undef vdso_fixup_datapage #undef vdso_fixup_features #undef vdso_setup +#undef init_vdso_pagelist #undef VDSO_LBASE #undef vdso_kbase #undef vdso_pages +#undef vdso_pagelist #undef lib_elfinfo #undef BITS #undef _CONCAT3 -- 2.10.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>