Linux-RISC-V Archive on lore.kernel.org
 help / color / Atom feed
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 08/15] mips: switch to generic version of pte allocation
Date: Thu,  2 May 2019 18:28:35 +0300
Message-ID: <1556810922-20248-9-git-send-email-rppt@linux.ibm.com> (raw)
In-Reply-To: <1556810922-20248-1-git-send-email-rppt@linux.ibm.com>

MIPS allocates kernel PTE pages with

	__get_free_pages(GFP_KERNEL | __GFP_ZERO, PTE_ORDER)

and user PTE pages with

	alloc_pages(GFP_KERNEL | __GFP_ZERO, PTE_ORDER)

The PTE_ORDER is hardwired to zero, which makes MIPS implementation almost
identical to the generic one.

Switch MIPS to the generic version that does exactly the same thing for the
kernel page tables and adds __GFP_ACCOUNT for the user PTEs.

The pte_free_kernel() and pte_free() versions on mips are identical to the
generic ones and can be simply dropped.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
---
 arch/mips/include/asm/pgalloc.h | 33 ++-------------------------------
 1 file changed, 2 insertions(+), 31 deletions(-)

diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h
index 27808d9..aa16b85 100644
--- a/arch/mips/include/asm/pgalloc.h
+++ b/arch/mips/include/asm/pgalloc.h
@@ -13,6 +13,8 @@
 #include <linux/mm.h>
 #include <linux/sched.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)
 {
@@ -50,37 +52,6 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 	free_pages((unsigned long)pgd, PGD_ORDER);
 }
 
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
-{
-	return (pte_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, PTE_ORDER);
-}
-
-static inline struct page *pte_alloc_one(struct mm_struct *mm)
-{
-	struct page *pte;
-
-	pte = alloc_pages(GFP_KERNEL, PTE_ORDER);
-	if (!pte)
-		return NULL;
-	clear_highpage(pte);
-	if (!pgtable_page_ctor(pte)) {
-		__free_page(pte);
-		return NULL;
-	}
-	return pte;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
-	free_pages((unsigned long)pte, PTE_ORDER);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
-	pgtable_page_dtor(pte);
-	__free_pages(pte, PTE_ORDER);
-}
-
 #define __pte_free_tlb(tlb,pte,address)			\
 do {							\
 	pgtable_page_dtor(pte);				\
-- 
2.7.4


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  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 ` Mike Rapoport [this message]
2019-05-02 19:09   ` [PATCH 08/15] mips: " 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
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

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1556810922-20248-9-git-send-email-rppt@linux.ibm.com \
    --to=rppt@linux.ibm.com \
    --cc=akpm@linux-foundation.org \
    --cc=arnd@arndb.de \
    --cc=catalin.marinas@arm.com \
    --cc=deller@gmx.de \
    --cc=geert@linux-m68k.org \
    --cc=green.hu@gmail.com \
    --cc=guoren@kernel.org \
    --cc=gxt@pku.edu.cn \
    --cc=lftan@altera.com \
    --cc=linux-alpha@vger.kernel.org \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-hexagon@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-m68k@lists.linux-m68k.org \
    --cc=linux-mips@vger.kernel.org \
    --cc=linux-parisc@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=linux-um@lists.infradead.org \
    --cc=linux@armlinux.org.uk \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=mattst88@gmail.com \
    --cc=mhocko@suse.com \
    --cc=mpe@ellerman.id.au \
    --cc=nios2-dev@lists.rocketboards.org \
    --cc=palmer@sifive.com \
    --cc=paul.burton@mips.com \
    --cc=richard@nod.at \
    --cc=rkuo@codeaurora.org \
    --cc=sammy@sammy.net \
    --cc=willy@infradead.org \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-RISC-V Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-riscv/0 linux-riscv/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-riscv linux-riscv/ https://lore.kernel.org/linux-riscv \
		linux-riscv@lists.infradead.org infradead-linux-riscv@archiver.kernel.org
	public-inbox-index linux-riscv


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-riscv


AGPL code for this site: git clone https://public-inbox.org/ public-inbox