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From: Mike Rapoport <rppt@linux.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Palmer Dabbelt <palmer@sifive.com>,
	linux-mips@vger.kernel.org, Guo Ren <guoren@kernel.org>,
	linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-arch@vger.kernel.org, Michael Ellerman <mpe@ellerman.id.au>,
	Helge Deller <deller@gmx.de>,
	x86@kernel.org, Russell King <linux@armlinux.org.uk>,
	Matthew Wilcox <willy@infradead.org>,
	Mike Rapoport <rppt@linux.ibm.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Matt Turner <mattst88@gmail.com>, Sam Creasey <sammy@sammy.net>,
	Arnd Bergmann <arnd@arndb.de>,
	linux-um@lists.infradead.org, Richard Weinberger <richard@nod.at>,
	linux-m68k@lists.linux-m68k.org,
	Greentime Hu <green.hu@gmail.com>,
	nios2-dev@lists.rocketboards.org, Guan Xuetao <gxt@pku.edu.cn>,
	linux-arm-kernel@lists.infradead.org,
	linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Richard Kuo <rkuo@codeaurora.org>,
	Paul Burton <paul.burton@mips.com>,
	linux-alpha@vger.kernel.org, Ley Foon Tan <lftan@altera.com>,
	linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 13/15] riscv: switch to generic version of pte allocation
Date: Thu,  2 May 2019 18:28:40 +0300
Message-ID: <1556810922-20248-14-git-send-email-rppt@linux.ibm.com> (raw)
In-Reply-To: <1556810922-20248-1-git-send-email-rppt@linux.ibm.com>

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.

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);         \
-- 
2.7.4


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  parent reply index

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: introduce generic pte_{alloc, free}_one[_kernel] Mike Rapoport
2019-05-02 19:03   ` [PATCH 01/15] asm-generic, x86: introduce generic pte_{alloc,free}_one[_kernel] 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 ` Mike Rapoport [this message]
2019-05-06 18:25   ` [PATCH 13/15] riscv: " Palmer Dabbelt
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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