linux-kernel - [PATCH v6 0/3] openrisc: Add cacheinfo support and introduce new utility functions

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Message-ID: <20250419154819.85063-1-sahilcdq0@gmail.com>
Date: Sat, 19 Apr 2025 21:18:16 +0530
From: Sahil Siddiq <sahilcdq0@...il.com>
To: jonas@...thpole.se,
	stefan.kristiansson@...nalahti.fi,
	shorne@...il.com
Cc: linux-openrisc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Sahil Siddiq <sahilcdq0@...il.com>
Subject: [PATCH v6 0/3] openrisc: Add cacheinfo support and introduce new utility functions

Hi,

The main purpose of this series is to expose CPU cache attributes for
OpenRISC in sysfs using the cacheinfo API. The core implementation
to achieve this is in patch #3. Patch #1 and #2 add certain enhancements
to simplify the implementation of cacheinfo support.

The difference between this patch series and the previous version [1] is
minor. The email address used in 'From' and 'signed-off-by' are now the
same so checkpatch does not throw a FROM_SIGN_OFF_MISMATCH warning.

The patch also addresses a build warning that was caught by the kernel
test robot [2] and addressed in a standalone patch earlier [3].

Thanks,
Sahil

[1] https://lore.kernel.org/openrisc/564042d9-0645-4a0d-aac8-383b0c699b49@gmail.com/T/#m67aed7737e79675352815470cd1e3b9ed6814b05
[2] https://lore.kernel.org/openrisc/20250323195544.152948-1-sahilcdq@proton.me/T/#md4b867e8d721f8894368ddc209875e262c1e2b60
[3] https://lore.kernel.org/openrisc/aAMwri9RK2oNuC_p@antec/T/#mc42cafae92957171cef94065f25257e5bed37ed6

Sahil Siddiq (3):
  openrisc: Refactor struct cpuinfo_or1k to reduce duplication
  openrisc: Introduce new utility functions to flush and invalidate
    caches
  openrisc: Add cacheinfo support

 arch/openrisc/include/asm/cacheflush.h |  17 ++++
 arch/openrisc/include/asm/cpuinfo.h    |  24 ++++--
 arch/openrisc/kernel/Makefile          |   2 +-
 arch/openrisc/kernel/cacheinfo.c       | 104 +++++++++++++++++++++++++
 arch/openrisc/kernel/dma.c             |  18 +----
 arch/openrisc/kernel/setup.c           |  45 +----------
 arch/openrisc/mm/cache.c               |  56 ++++++++++---
 arch/openrisc/mm/init.c                |   5 +-
 8 files changed, 196 insertions(+), 75 deletions(-)
 create mode 100644 arch/openrisc/kernel/cacheinfo.c


base-commit: 183601b78a9b1c3da2b59f2bee915f97ba745c0b
prerequisite-patch-id: 3ec7c4c93dc2780c9978de0775bf46ae43c00b83
prerequisite-patch-id: 0b455477c75ef34d81032b9419d8ad3d5e74043d
-- 
2.48.1