From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: "Arnd Bergmann" <arnd@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>,
"David S. Miller" <davem@davemloft.net>,
"Andreas Larsson" <andreas@gaisler.com>
Cc: Andy Lutomirski <luto@kernel.org>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
shuah <shuah@kernel.org>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>,
John Stultz <jstultz@google.com>, Stephen Boyd <sboyd@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Eric Biggers <ebiggers@google.com>,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] vdso: sparc: stub out custom vdso implementation
Date: Mon, 07 Jul 2025 17:22:18 +0200 [thread overview]
Message-ID: <a2cfee1a725f24f90937f070eacdedd2716ef307.camel@physik.fu-berlin.de> (raw)
In-Reply-To: <20250707144726.4008707-1-arnd@kernel.org>
Hello Arnd,
On Mon, 2025-07-07 at 16:46 +0200, Arnd Bergmann wrote:
> Rip out the whole thing and replace it with a minimal stub as we do
> on parisc and uml. This introduces a small performance regression when
> using a libc that is aware of the vdso (glibc-2.29 or higher).
Can this performance hit quantified in any way?
And is there previous serious where this change was made for other archs?
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer
`. `' Physicist
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
next prev parent reply other threads:[~2025-07-07 15:25 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-07 14:46 Arnd Bergmann
2025-07-07 14:46 ` [PATCH 2/2] clocksource: remove ARCH_CLOCKSOURCE_DATA Arnd Bergmann
2025-07-07 17:31 ` John Stultz
2025-07-07 15:22 ` John Paul Adrian Glaubitz [this message]
2025-07-07 15:45 ` [PATCH 1/2] vdso: sparc: stub out custom vdso implementation Arnd Bergmann
2025-07-07 16:05 ` John Paul Adrian Glaubitz
2025-07-10 16:22 ` Andreas Larsson
2025-07-11 10:31 ` Arnd Bergmann
2025-07-14 8:40 ` John Paul Adrian Glaubitz
2025-07-21 21:12 ` Thomas Gleixner
2025-07-08 5:39 ` Thomas Weißschuh
2025-07-08 6:40 ` Arnd Bergmann
2025-07-08 7:13 ` Thomas Weißschuh
2025-07-23 10:57 ` Thomas Weißschuh
2025-07-23 11:10 ` John Paul Adrian Glaubitz
2025-07-23 17:24 ` Thomas Gleixner
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