linux-kernel - [PATCH v6 0/4] riscv/barrier: tidying up barrier-related macro

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Date: Sat, 17 Feb 2024 13:12:06 +0000
From: Eric Chan <ericchancf@...gle.com>
To: paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu
Cc: linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	ericchancf@...gle.com, conor.dooley@...rochip.com, parri.andrea@...il.com, 
	emil.renner.berthing@...onical.com, samuel.holland@...ive.com
Subject: [PATCH v6 0/4] riscv/barrier: tidying up barrier-related macro

This series makes barrier-related macro more neat and clear.
This is a follow-up to [0-3], change to multiple patches,
for readability, create new message thread.

v5 -> v6: [PATCH 1/4] let this change to pass review by checkpatch.pl
instead of overwriting again in [PATCH 4/4]. for [PATCH 4/4] change
the error message example in commit message to make it more relevant

v4 -> v5: [PATCH 3/4] __atomic_acquire_fence and __atomic_release_fence
omit-the-fence-on-uniprocessor optimization, and fix the typo of
RISCV_RELEASE_BARRIER when spliting the patch in v3.

v3 -> v4: fix [PATCH 1/4] commit message weird line breaks and let
[PATCH 3/4] fix the form that can pass the checking of checkpatch.pl.

v2 -> v3: split the patch into multiple patches for one problem per patch.
Also review the changelog to make the description more precise.

v1 -> v2: makes compilation pass with allyesconfig instead of
defconfig only, also satisfy scripts/checkpatch.pl.
- (__asm__ __volatile__ (RISCV_FENCE_ASM(p, s) : : : "memory"))
+ ({ __asm__ __volatile__ (RISCV_FENCE_ASM(p, s) : : : "memory"); })

[0](v1/v2) https://lore.kernel.org/lkml/20240209125048.4078639-1-ericchancf@google.com/
[1] (v3) https://lore.kernel.org/lkml/20240213142856.2416073-1-ericchancf@google.com/
[2] (v4) https://lore.kernel.org/lkml/20240213200923.2547570-1-ericchancf@google.com/
[4] (v5) https://lore.kernel.org/lkml/20240213223810.2595804-1-ericchancf@google.com/

Eric Chan (4):
  riscv/barrier: Define __{mb,rmb,wmb}
  riscv/barrier: Define RISCV_FULL_BARRIER
  riscv/barrier: Consolidate fence definitions
  riscv/barrier: Resolve checkpatch.pl error

 arch/riscv/include/asm/atomic.h  | 17 ++++++++---------
 arch/riscv/include/asm/barrier.h | 21 ++++++++++-----------
 arch/riscv/include/asm/cmpxchg.h |  5 ++---
 arch/riscv/include/asm/fence.h   | 10 ++++++++--
 arch/riscv/include/asm/io.h      |  8 ++++----
 arch/riscv/include/asm/mmio.h    |  5 +++--
 arch/riscv/include/asm/mmiowb.h  |  2 +-
 7 files changed, 36 insertions(+), 32 deletions(-)

--
2.44.0.rc0.258.g7320e95886-goog