Linux-csky Archive on lore.kernel.org
 help / color / Atom feed
From: guoren@kernel.org
To: julien.grall@arm.com, arnd@arndb.de, linux-kernel@vger.kernel.org
Cc: linux-csky@vger.kernel.org, Guo Ren <ren_guo@c-sky.com>
Subject: [PATCH 0/4] csky: Use generic asid function from arm
Date: Wed, 19 Jun 2019 15:49:09 +0800
Message-ID: <1560930553-26502-1-git-send-email-guoren@kernel.org> (raw)

From: Guo Ren <ren_guo@c-sky.com>

Julien Grall plan to seperate asid allocator into generic and vmid and
other architectures could use it.

ref:
https://lore.kernel.org/linux-arm-kernel/20190321163623.20219-1-julien.grall@arm.com/

For C-SKY the first implementation is from mips and it's not implemented
well for SMP in performance. Arm's asid allocator is right for us and
we've tested it in our all CPUs:610/807/810/860 and it really reduce the
tlb flush. We'll continue stress testing before merge into master.

It's good for all architectures in linux and let's continue the work.

@Julien
 Could you give a seperate patch for add generic asid ?

Guo Ren (4):
  csky: Revert mmu ASID mechanism
  arch: Add generic asid implement from arm
  csky: Use generic asid algorithm to implement switch_mm
  csky: Improve tlb operation with help of asid

 arch/csky/abiv1/inc/abi/ckmmu.h     |   6 +
 arch/csky/abiv2/inc/abi/ckmmu.h     |  10 ++
 arch/csky/include/asm/asid.h        |  77 ++++++++++++
 arch/csky/include/asm/mmu.h         |   2 +-
 arch/csky/include/asm/mmu_context.h | 114 ++---------------
 arch/csky/include/asm/pgtable.h     |   2 -
 arch/csky/kernel/smp.c              |   2 -
 arch/csky/mm/Makefile               |   2 +
 arch/csky/mm/asid.c                 | 185 ++++++++++++++++++++++++++++
 arch/csky/mm/context.c              |  46 +++++++
 arch/csky/mm/init.c                 |   2 -
 arch/csky/mm/tlb.c                  | 238 ++++++++++++++----------------------
 12 files changed, 434 insertions(+), 252 deletions(-)
 create mode 100644 arch/csky/include/asm/asid.h
 create mode 100644 arch/csky/mm/asid.c
 create mode 100644 arch/csky/mm/context.c

-- 
2.7.4


             reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-19  7:49 guoren [this message]
2019-06-19  7:49 ` [PATCH 1/4] csky: Revert mmu ASID mechanism guoren
2019-06-19  7:49 ` [PATCH 2/4] arch: Add generic asid implement from arm guoren
2019-06-19  7:49 ` [PATCH 3/4] csky: Use generic asid algorithm to implement switch_mm guoren
2019-06-19  7:49 ` [PATCH 4/4] csky: Improve tlb operation with help of asid guoren

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=1560930553-26502-1-git-send-email-guoren@kernel.org \
    --to=guoren@kernel.org \
    --cc=arnd@arndb.de \
    --cc=julien.grall@arm.com \
    --cc=linux-csky@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=ren_guo@c-sky.com \
    /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-csky Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-csky/0 linux-csky/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-csky linux-csky/ https://lore.kernel.org/linux-csky \
		linux-csky@vger.kernel.org
	public-inbox-index linux-csky

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-csky


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