From: Andrew Jones <ajones@ventanamicro.com>
To: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Jonathan Corbet <corbet@lwn.net>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Conor Dooley <conor@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Andrea Parri <parri.andrea@gmail.com>,
Nathan Chancellor <nathan@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
Waiman Long <longman@redhat.com>,
Boqun Feng <boqun.feng@gmail.com>, Arnd Bergmann <arnd@arndb.de>,
Leonardo Bras <leobras@redhat.com>, Guo Ren <guoren@kernel.org>,
linux-doc@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-arch@vger.kernel.org
Subject: Re: [PATCH v4 07/13] riscv: Implement arch_cmpxchg128() using Zacas
Date: Wed, 31 Jul 2024 17:41:57 +0200 [thread overview]
Message-ID: <20240731-98a368a296fa83a2e8ff8bec@orel> (raw)
In-Reply-To: <20240731072405.197046-8-alexghiti@rivosinc.com>
On Wed, Jul 31, 2024 at 09:23:59AM GMT, Alexandre Ghiti wrote:
> Now that Zacas is supported in the kernel, let's use the double word
> atomic version of amocas to improve the SLUB allocator.
>
> Note that we have to select fixed registers, otherwise gcc fails to pick
> even registers and then produces a reserved encoding which fails to
> assemble.
>
> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
> ---
> arch/riscv/Kconfig | 1 +
> arch/riscv/include/asm/cmpxchg.h | 38 ++++++++++++++++++++++++++++++++
> 2 files changed, 39 insertions(+)
>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
next prev parent reply other threads:[~2024-07-31 15:42 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-31 7:23 [PATCH v4 00/13] Zacas/Zabha support and qspinlocks Alexandre Ghiti
2024-07-31 7:23 ` [PATCH v4 01/13] riscv: Move cpufeature.h macros into their own header Alexandre Ghiti
2024-07-31 9:10 ` Andrew Jones
2024-07-31 7:23 ` [PATCH v4 02/13] riscv: Do not fail to build on byte/halfword operations with Zawrs Alexandre Ghiti
2024-07-31 14:10 ` Andrew Jones
2024-07-31 15:52 ` Alexandre Ghiti
2024-07-31 16:14 ` Andrew Jones
2024-08-01 6:30 ` Alexandre Ghiti
2024-07-31 16:27 ` Waiman Long
2024-07-31 21:51 ` Guo Ren
2024-07-31 7:23 ` [PATCH v4 03/13] riscv: Implement cmpxchg32/64() using Zacas Alexandre Ghiti
2024-07-31 9:21 ` Andrew Jones
2024-07-31 7:23 ` [PATCH v4 04/13] dt-bindings: riscv: Add Zabha ISA extension description Alexandre Ghiti
2024-08-01 14:53 ` Conor Dooley
2024-07-31 7:23 ` [PATCH v4 05/13] riscv: Implement cmpxchg8/16() using Zabha Alexandre Ghiti
2024-07-31 9:27 ` Andrew Jones
2024-07-31 7:23 ` [PATCH v4 06/13] riscv: Improve zacas fully-ordered cmpxchg() Alexandre Ghiti
2024-07-31 9:59 ` Andrew Jones
2024-07-31 10:33 ` Andrea Parri
2024-08-01 6:15 ` Alexandre Ghiti
2024-07-31 7:23 ` [PATCH v4 07/13] riscv: Implement arch_cmpxchg128() using Zacas Alexandre Ghiti
2024-07-31 15:41 ` Andrew Jones [this message]
2024-07-31 7:24 ` [PATCH v4 08/13] riscv: Implement xchg8/16() using Zabha Alexandre Ghiti
2024-07-31 12:20 ` Andrew Jones
2024-07-31 7:24 ` [PATCH v4 09/13] asm-generic: ticket-lock: Reuse arch_spinlock_t of qspinlock Alexandre Ghiti
2024-07-31 7:24 ` [PATCH v4 10/13] asm-generic: ticket-lock: Add separate ticket-lock.h Alexandre Ghiti
2024-07-31 7:24 ` [PATCH v4 11/13] riscv: Add ISA extension parsing for Ziccrse Alexandre Ghiti
2024-07-31 7:24 ` [PATCH v4 12/13] dt-bindings: riscv: Add Ziccrse ISA extension description Alexandre Ghiti
2024-08-01 14:44 ` Conor Dooley
2024-08-02 8:14 ` Alexandre Ghiti
2024-08-02 14:46 ` Conor Dooley
2024-07-31 7:24 ` [PATCH v4 13/13] riscv: Add qspinlock support Alexandre Ghiti
2024-07-31 15:29 ` Andrew Jones
2024-08-01 6:53 ` Alexandre Ghiti
2024-08-01 7:48 ` Andrew Jones
2024-08-02 8:31 ` Alexandre Ghiti
2024-08-15 13:27 ` Alexandre Ghiti
2024-08-15 13:34 ` Andrew Jones
2024-08-17 5:08 ` Guo Ren
2024-08-21 12:18 ` Andrew Jones
2024-08-27 8:02 ` Alexandre Ghiti
2024-08-27 8:03 ` Alexandre Ghiti
2024-08-01 8:43 ` Alexandre Ghiti
2024-08-01 10:15 ` Andrew Jones
2024-08-02 8:58 ` Alexandre Ghiti
2024-08-01 9:48 ` Andrea Parri
2024-08-01 14:15 ` [PATCH v4 00/13] Zacas/Zabha support and qspinlocks Peter Zijlstra
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