From: Andrew Morton <akpm@linux-foundation.org>
To: Finn Thain <fthain@linux-m68k.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Will Deacon <will@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Alexei Starovoitov <ast@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
bpf@vger.kernel.org, Rich Felker <dalias@libc.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Dinh Nguyen <dinguyen@kernel.org>,
Eduard Zingerman <eddyz87@gmail.com>, Gary Guo <gary@garyguo.net>,
Geert Uytterhoeven <geert@linux-m68k.org>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
Guo Ren <guoren@kernel.org>, Hao Luo <haoluo@google.com>,
John Fastabend <john.fastabend@gmail.com>,
Jiri Olsa <jolsa@kernel.org>, Jonas Bonn <jonas@southpole.se>,
KP Singh <kpsingh@kernel.org>,
linux-arch@vger.kernel.org, linux-csky@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
linux-openrisc@vger.kernel.org, linux-sh@vger.kernel.org,
Mark Rutland <mark.rutland@arm.com>,
Martin KaFai Lau <martin.lau@linux.dev>,
Stanislav Fomichev <sdf@fomichev.me>,
Stafford Horne <shorne@gmail.com>, Song Liu <song@kernel.org>,
Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
Yonghong Song <yonghong.song@linux.dev>,
Yoshinori Sato <ysato@users.sourceforge.jp>
Subject: Re: [PATCH v5 0/4] Align atomic storage
Date: Tue, 16 Dec 2025 11:49:45 -0800 [thread overview]
Message-ID: <20251216114945.df117ce1f176dd7752244cfb@linux-foundation.org> (raw)
In-Reply-To: <cover.1765866665.git.fthain@linux-m68k.org>
On Tue, 16 Dec 2025 17:31:05 +1100 Finn Thain <fthain@linux-m68k.org> wrote:
> This series adds the __aligned attribute to atomic_t and atomic64_t
> definitions in include/linux and include/asm-generic (respectively)
> to get natural alignment of both types on csky, m68k, microblaze,
> nios2, openrisc and sh.
>
> This series also adds Kconfig options to enable a new run-time warning
> to help reveal misaligned atomic accesses on platforms which don't
> trap that.
>
> The performance impact is expected to vary across platforms and workloads.
> The measurements I made on m68k show that some workloads run faster and
> others slower.
Looks nice, thanks.
I don't know which tree this is aimed at. I grabbed a copy for
mm.git's mm-nonmm-unstable tree, can drop it again if this pops up in
linux-next via another route.
prev parent reply other threads:[~2025-12-16 19:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-16 6:31 [PATCH v5 0/4] Align atomic storage Finn Thain
2025-12-16 6:31 ` [PATCH v5 2/4] atomic: Specify alignment for atomic_t and atomic64_t Finn Thain
2025-12-16 7:04 ` Guo Ren
2025-12-16 7:18 ` Arnd Bergmann
2025-12-16 19:49 ` Andrew Morton [this message]
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