From: Matthew Wilcox <willy@infradead.org>
To: Hao Ge <hao.ge@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>,
Suren Baghdasaryan <surenb@google.com>,
Mike Rapoport <rppt@kernel.org>,
Richard Henderson <richard.henderson@linaro.org>,
Matt Turner <mattst88@gmail.com>, Dennis Zhou <dennis@kernel.org>,
Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Kent Overstreet <kent.overstreet@linux.dev>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-alpha@vger.kernel.org, linux-s390@vger.kernel.org,
Hao Ge <gehao@kylinos.cn>
Subject: Re: [PATCH v3 1/2] mm: Optimize the ARCH_NEEDS_WEAK_PER_CPU logic for s390/alpha architectures
Date: Mon, 16 Jun 2025 04:13:55 +0100 [thread overview]
Message-ID: <aE-L81GzxzWBTfPb@casper.infradead.org> (raw)
In-Reply-To: <57e110be6d8387e403b4ef1f3b10714c36afbb51.1750040317.git.gehao@kylinos.cn>
On Mon, Jun 16, 2025 at 10:29:17AM +0800, Hao Ge wrote:
> +++ b/mm/Kconfig
> @@ -929,6 +929,10 @@ config ARCH_SUPPORTS_PUD_PFNMAP
> def_bool y
> depends on ARCH_SUPPORTS_HUGE_PFNMAP && HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
>
> +# s390 and alpha should be enabled,see comments for DECLARE_PER_CPU_SECTION
This comment is inappropriate and should be removed.
> +config ARCH_NEEDS_WEAK_PER_CPU
> + bool
> +
> #
> # UP and nommu archs use km based percpu allocator
> #
> --
> 2.25.1
>
>
next prev parent reply other threads:[~2025-06-16 3:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-16 2:29 [PATCH v3 0/2] mm: Restrict the static definition of the per-CPU variable _shared_alloc_tag to s390 and alpha architectures only Hao Ge
2025-06-16 2:29 ` [PATCH v3 1/2] mm: Optimize the ARCH_NEEDS_WEAK_PER_CPU logic for s390/alpha architectures Hao Ge
2025-06-16 3:13 ` Matthew Wilcox [this message]
2025-06-16 3:40 ` Kent Overstreet
2025-06-16 7:59 ` David Hildenbrand
2025-06-16 8:55 ` Mike Rapoport
2025-06-16 23:49 ` Suren Baghdasaryan
2025-06-16 2:29 ` [PATCH v3 2/2] mm/alloc_tag: add the CONFIG_ARCH_NEEDS_WEAK_PER_CPU macro when statically defining the percpu variable _shared_alloc_tag Hao Ge
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