* [PATCH v12 6/8] arm: add pmd_[dirty|mkclean] for THP [not found] <1404886949-17695-1-git-send-email-minchan@kernel.org> @ 2014-07-09 6:22 ` Minchan Kim 2014-07-09 6:22 ` [PATCH v12 7/8] arm64: " Minchan Kim 1 sibling, 0 replies; 3+ messages in thread From: Minchan Kim @ 2014-07-09 6:22 UTC (permalink / raw) To: linux-arm-kernel MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite of the contents since MADV_FREE syscall is called for THP page. This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE support. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Steve Capper <steve.capper@linaro.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: linux-arm-kernel at lists.infradead.org Signed-off-by: Minchan Kim <minchan@kernel.org> --- arch/arm/include/asm/pgtable-3level.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index 85c60adc8b60..830f84f2d277 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -220,6 +220,8 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) #define pmd_trans_splitting(pmd) (pmd_val(pmd) & PMD_SECT_SPLITTING) #endif +#define pmd_dirty(pmd) (pmd_val(pmd) & PMD_SECT_DIRTY) + #define PMD_BIT_FUNC(fn,op) \ static inline pmd_t pmd_##fn(pmd_t pmd) { pmd_val(pmd) op; return pmd; } @@ -228,6 +230,7 @@ PMD_BIT_FUNC(mkold, &= ~PMD_SECT_AF); PMD_BIT_FUNC(mksplitting, |= PMD_SECT_SPLITTING); PMD_BIT_FUNC(mkwrite, &= ~PMD_SECT_RDONLY); PMD_BIT_FUNC(mkdirty, |= PMD_SECT_DIRTY); +PMD_BIT_FUNC(mkclean, &= ~PMD_SECT_DIRTY); PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF); #define pmd_mkhuge(pmd) (__pmd(pmd_val(pmd) & ~PMD_TABLE_BIT)) -- 2.0.0 ^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v12 7/8] arm64: add pmd_[dirty|mkclean] for THP [not found] <1404886949-17695-1-git-send-email-minchan@kernel.org> 2014-07-09 6:22 ` [PATCH v12 6/8] arm: add pmd_[dirty|mkclean] for THP Minchan Kim @ 2014-07-09 6:22 ` Minchan Kim 2014-07-09 11:14 ` Catalin Marinas 1 sibling, 1 reply; 3+ messages in thread From: Minchan Kim @ 2014-07-09 6:22 UTC (permalink / raw) To: linux-arm-kernel MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite of the contents since MADV_FREE syscall is called for THP page. This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE support. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Steve Capper <steve.capper@linaro.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: linux-arm-kernel at lists.infradead.org Signed-off-by: Minchan Kim <minchan@kernel.org> --- arch/arm64/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 579702086488..f3ec01cef04f 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -240,10 +240,12 @@ static inline pmd_t pte_pmd(pte_t pte) #endif #define pmd_young(pmd) pte_young(pmd_pte(pmd)) +#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd)) #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) #define pmd_mksplitting(pmd) pte_pmd(pte_mkspecial(pmd_pte(pmd))) #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) +#define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd))) #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) #define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) & ~PMD_TYPE_MASK)) -- 2.0.0 ^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v12 7/8] arm64: add pmd_[dirty|mkclean] for THP 2014-07-09 6:22 ` [PATCH v12 7/8] arm64: " Minchan Kim @ 2014-07-09 11:14 ` Catalin Marinas 0 siblings, 0 replies; 3+ messages in thread From: Catalin Marinas @ 2014-07-09 11:14 UTC (permalink / raw) To: linux-arm-kernel On Wed, Jul 09, 2014 at 07:22:28AM +0100, Minchan Kim wrote: > MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent > overwrite of the contents since MADV_FREE syscall is called for > THP page. > > This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE > support. > > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will.deacon@arm.com> > Cc: Steve Capper <steve.capper@linaro.org> > Cc: Russell King <linux@arm.linux.org.uk> > Cc: linux-arm-kernel at lists.infradead.org > Signed-off-by: Minchan Kim <minchan@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2014-07-09 11:14 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <1404886949-17695-1-git-send-email-minchan@kernel.org> 2014-07-09 6:22 ` [PATCH v12 6/8] arm: add pmd_[dirty|mkclean] for THP Minchan Kim 2014-07-09 6:22 ` [PATCH v12 7/8] arm64: " Minchan Kim 2014-07-09 11:14 ` Catalin Marinas
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