From: "Arnd Bergmann" <arnd@arndb.de>
To: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>,
"Huacai Chen" <chenhuacai@kernel.org>,
"WANG Xuerui" <kernel@xen0n.name>,
"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>,
"Andy Lutomirski" <luto@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
shuah <shuah@kernel.org>
Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-s390@vger.kernel.org, linux-api@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v3] vdso: Remove struct getcpu_cache
Date: Tue, 30 Dec 2025 22:23:36 +0100 [thread overview]
Message-ID: <324be2f3-092c-4796-a7ae-4cddbc65ec00@app.fastmail.com> (raw)
In-Reply-To: <20251230-getcpu_cache-v3-1-fb9c5f880ebe@linutronix.de>
On Tue, Dec 30, 2025, at 08:08, Thomas Weißschuh wrote:
> The cache parameter of getcpu() is useless nowadays for various reasons.
> * It is never passed by userspace for either the vDSO or syscalls.
> * It is never used by the kernel.
> * It could not be made to work on the current vDSO architecture.
> * The structure definition is not part of the UAPI headers.
> * vdso_getcpu() is superseded by restartable sequences in any case.
>
> Remove the struct and its header.
>
> As a side-effect we get rid of an unwanted inclusion of the linux/
> header namespace from vDSO code.
>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
next prev parent reply other threads:[~2025-12-30 21:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-30 7:08 [PATCH v3] vdso: Remove struct getcpu_cache Thomas Weißschuh
2025-12-30 21:23 ` Arnd Bergmann [this message]
2026-01-02 12:20 ` Heiko Carstens
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