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Date: Tue, 1 Feb 2022 09:58:16 -0500 (EST)
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Chris Kennelly <ckennelly@google.com>
Cc: Paul Turner <pjt@google.com>, Peter Oskolkov <posk@posk.io>, 
 Florian Weimer <fweimer@redhat.com>, 
 libc-alpha <libc-alpha@sourceware.org>, 
 linux-kernel <linux-kernel@vger.kernel.org>, 
 Peter Zijlstra <peterz@infradead.org>
Message-ID: <432231420.24682.1643727496135.JavaMail.zimbra@efficios.com>
Subject: Aligning tcmalloc with glibc 2.35 rseq ABI
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Thread-Topic: Aligning tcmalloc with glibc 2.35 rseq ABI
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Hi Chris,

You will probably want to have a look at the userspace rseq ABI exposed by glibc 2.35 to ensure
tcmalloc becomes compatible with it.

If it helps, you can have a look at how I modified librseq to play nicely with glibc 2.35:

https://git.kernel.org/pub/scm/libs/librseq/librseq.git/

Most relevant bits:

https://git.kernel.org/pub/scm/libs/librseq/librseq.git/tree/src/rseq.c#n108

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com