From: Palmer Dabbelt <palmer@sifive.com>
To: rppt@linux.ibm.com
Cc: akpm@linux-foundation.org, Arnd Bergmann <arnd@arndb.de>,
catalin.marinas@arm.com, geert@linux-m68k.org,
green.hu@gmail.com, gxt@pku.edu.cn, guoren@kernel.org,
deller@gmx.de, lftan@altera.com, willy@infradead.org,
mattst88@gmail.com, mpe@ellerman.id.au, mhocko@suse.com,
paul.burton@mips.com, rkuo@codeaurora.org, richard@nod.at,
linux@armlinux.org.uk, sammy@sammy.net, x86@kernel.org,
linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-riscv@lists.infradead.org, linux-um@lists.infradead.org,
nios2-dev@lists.rocketboards.org, rppt@linux.ibm.com
Subject: Re: [PATCH 13/15] riscv: switch to generic version of pte allocation
Date: Mon, 06 May 2019 11:25:52 -0700 (PDT) [thread overview]
Message-ID: <mhng-c23d2e8b-1dc0-48db-a4cf-d6964ca650c0@palmer-si-x1e> (raw)
In-Reply-To: <1556810922-20248-14-git-send-email-rppt@linux.ibm.com>
On Thu, 02 May 2019 08:28:40 PDT (-0700), rppt@linux.ibm.com wrote:
> The only difference between the generic and RISC-V implementation of PTE
> allocation is the usage of __GFP_RETRY_MAYFAIL for both kernel and user
> PTEs and the absence of __GFP_ACCOUNT for the user PTEs.
>
> The conversion to the generic version removes the __GFP_RETRY_MAYFAIL and
> ensures that GFP_ACCOUNT is used for the user PTE allocations.
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
I'm assuming this is going in along with the rest of the patches, so I'm not
going to add it to my tree.
>
> The pte_free() and pte_free_kernel() versions are identical to the generic
> ones and can be simply dropped.
>
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
> ---
> arch/riscv/include/asm/pgalloc.h | 29 ++---------------------------
> 1 file changed, 2 insertions(+), 27 deletions(-)
>
> diff --git a/arch/riscv/include/asm/pgalloc.h b/arch/riscv/include/asm/pgalloc.h
> index 94043cf..48f28bb 100644
> --- a/arch/riscv/include/asm/pgalloc.h
> +++ b/arch/riscv/include/asm/pgalloc.h
> @@ -18,6 +18,8 @@
> #include <linux/mm.h>
> #include <asm/tlb.h>
>
> +#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
> +
> static inline void pmd_populate_kernel(struct mm_struct *mm,
> pmd_t *pmd, pte_t *pte)
> {
> @@ -82,33 +84,6 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
>
> #endif /* __PAGETABLE_PMD_FOLDED */
>
> -static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
> -{
> - return (pte_t *)__get_free_page(
> - GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_ZERO);
> -}
> -
> -static inline struct page *pte_alloc_one(struct mm_struct *mm)
> -{
> - struct page *pte;
> -
> - pte = alloc_page(GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_ZERO);
> - if (likely(pte != NULL))
> - pgtable_page_ctor(pte);
> - return pte;
> -}
> -
> -static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
> -{
> - free_page((unsigned long)pte);
> -}
> -
> -static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
> -{
> - pgtable_page_dtor(pte);
> - __free_page(pte);
> -}
> -
> #define __pte_free_tlb(tlb, pte, buf) \
> do { \
> pgtable_page_dtor(pte); \
next prev parent reply other threads:[~2019-05-06 18:25 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-02 15:28 [PATCH 00/15] introduce generic pte_{alloc,free}_one[_kernel] Mike Rapoport
2019-05-02 15:28 ` [PATCH 01/15] asm-generic, x86: " Mike Rapoport
2019-05-02 19:03 ` Paul Burton
2019-05-05 6:15 ` Mike Rapoport
2019-05-02 15:28 ` [PATCH 02/15] alpha: switch to generic version of pte allocation Mike Rapoport
2019-05-02 15:28 ` [PATCH 03/15] arm: " Mike Rapoport
2019-05-02 15:28 ` [PATCH 04/15] arm64: " Mike Rapoport
2019-05-03 10:05 ` Mark Rutland
2019-05-05 6:19 ` Mike Rapoport
2019-05-02 15:28 ` [PATCH 05/15] csky: " Mike Rapoport
2019-05-03 16:03 ` Guo Ren
2019-05-03 16:18 ` Guo Ren
2019-05-02 15:28 ` [PATCH 06/15] hexagon: " Mike Rapoport
2019-05-02 15:28 ` [PATCH 07/15] m68k: sun3: " Mike Rapoport
2019-05-02 15:28 ` [PATCH 08/15] mips: " Mike Rapoport
2019-05-02 19:09 ` Paul Burton
2019-05-05 6:17 ` Mike Rapoport
2019-05-02 15:28 ` [PATCH 09/15] nds32: " Mike Rapoport
2019-05-07 6:49 ` Greentime Hu
2019-05-02 15:28 ` [PATCH 10/15] nios2: " Mike Rapoport
2019-05-02 15:28 ` [PATCH 11/15] parisc: " Mike Rapoport
2019-05-02 15:28 ` [PATCH 12/15] powerpc/nohash/64: " Mike Rapoport
2019-05-02 16:56 ` Christophe Leroy
2019-05-05 6:23 ` Mike Rapoport
2019-05-02 15:28 ` [PATCH 13/15] riscv: " Mike Rapoport
2019-05-06 18:25 ` Palmer Dabbelt [this message]
2019-05-02 15:28 ` [PATCH 14/15] um: " Mike Rapoport
2019-05-03 13:28 ` Anton Ivanov
2019-05-02 15:28 ` [PATCH 15/15] unicore32: " Mike Rapoport
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