Linux-RISC-V Archive on lore.kernel.org
 help / color / Atom feed
From: Yash Shah <yash.shah@sifive.com>
To: paul.walmsley@sifive.com, palmer@dabbelt.com
Cc: aou@eecs.berkeley.edu, sachin.ghadi@sifive.com,
	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
	alexios.zavras@intel.com, Yash Shah <yash.shah@sifive.com>,
	anup@brainfault.org, tglx@linutronix.de, bp@suse.de,
	linux-riscv@lists.infradead.org, allison@lohutok.net
Subject: [PATCH v4 0/2] cacheinfo support to read no. of L2 cache ways enabled
Date: Fri, 17 Jan 2020 13:13:36 +0530
Message-ID: <1579247018-6720-1-git-send-email-yash.shah@sifive.com> (raw)

The patchset includes 2 patches. Patch 1 implements cache_get_priv_group
which make use of a generic ops structure to return a private attribute
group for custom cacheinfo. Patch 2 implements a private attribute named
"number_of_ways_enabled" in the cacheinfo framework. Reading this
attribute returns the number of L2 cache ways enabled at runtime,

This patchset is based on Linux v5.5-rc6 and tested on HiFive Unleashed
board.

v4 vs v3:
- Rename "sifive_l2_largest_wayenabled" to "l2_largest_wayenabled" and
  make it a static function

v3 vs v2:
- As per Anup Patel's suggestion[0], implement a new approach which uses
  generic ops structure. Hence addition of patch 1 to this series and
  corresponding changes to patch 2.
- Dropped "riscv: dts: Add DT support for SiFive L2 cache controller"
  patch since it is already merged
- Rebased on Linux v5.5-rc6

Changes in v2:
- Rebase the series on v5.5-rc3
- Remove the reserved-memory node from DT

[0]: https://lore.kernel.org/linux-riscv/CAAhSdy0CXde5s_ya=4YvmA4UQ5f5gLU-Z_FaOr8LPni+s_615Q@mail.gmail.com/

Yash Shah (2):
  riscv: cacheinfo: Implement cache_get_priv_group with a generic ops
    structure
  riscv: Add support to determine no. of L2 cache way enabled

 arch/riscv/include/asm/cacheinfo.h   | 15 ++++++++++++++
 arch/riscv/kernel/cacheinfo.c        | 17 ++++++++++++++++
 drivers/soc/sifive/sifive_l2_cache.c | 38 ++++++++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+)
 create mode 100644 arch/riscv/include/asm/cacheinfo.h

-- 
2.7.4



             reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-17  7:43 Yash Shah [this message]
2020-01-17  7:43 ` [PATCH v4 1/2] riscv: cacheinfo: Implement cache_get_priv_group with a generic ops structure Yash Shah
2020-01-17  7:43 ` [PATCH v4 2/2] riscv: Add support to determine no. of L2 cache way enabled Yash Shah
2020-02-07 18:24   ` Palmer Dabbelt
2020-02-18  6:25     ` Yash Shah

Reply instructions:

You may reply publicly 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=1579247018-6720-1-git-send-email-yash.shah@sifive.com \
    --to=yash.shah@sifive.com \
    --cc=alexios.zavras@intel.com \
    --cc=allison@lohutok.net \
    --cc=anup@brainfault.org \
    --cc=aou@eecs.berkeley.edu \
    --cc=bp@suse.de \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=palmer@dabbelt.com \
    --cc=paul.walmsley@sifive.com \
    --cc=sachin.ghadi@sifive.com \
    --cc=tglx@linutronix.de \
    /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
	public-inbox-index linux-riscv

Example config snippet for mirrors

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.git