sent/20240813-seq_optimize-68c48696c798-v2

[PATCH] [PATCH] ARM64: Optimize seq operations

V1->V2
- Describe the benefit of load acquire vs barriers
- Explain the CONFIG_ARCH_HAS_ACQUIRE_RELEASE option better

Signed-off-by: Christoph Lameter (Ampere) <cl@gentwo.org>
To: Catalin Marinas <catalin.marinas@arm.com>
To: Will Deacon <will@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@redhat.com>
To: Waiman Long <longman@redhat.com>
To: Boqun Feng <boqun.feng@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arch@vger.kernel.org

---
Christoph Lameter (Ampere) (1):
      Avoid memory barrier in read_seqcount() through load acquire

 arch/Kconfig            |  8 ++++++++
 arch/arm64/Kconfig      |  1 +
 include/linux/seqlock.h | 41 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+)
---
base-commit: b0da640826ba3b6506b4996a6b23a429235e6923
change-id: 20240813-seq_optimize-68c48696c798

Best regards,