From: Miroslav Benes <mbenes@suse.cz>
To: Mark Brown <broonie@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Ingo Molnar <mingo@kernel.org>, Jiri Slaby <jirislaby@kernel.org>,
x86@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] arm64: stacktrace: Convert to ARCH_STACKWALK
Date: Fri, 17 Jul 2020 11:06:31 +0200 (CEST) [thread overview]
Message-ID: <alpine.LSU.2.21.2007171105250.21694@pobox.suse.cz> (raw)
In-Reply-To: <20200716162022.GD5105@sirena.org.uk>
On Thu, 16 Jul 2020, Mark Brown wrote:
> On Thu, Jul 16, 2020 at 01:56:13PM +0200, Miroslav Benes wrote:
> > On Wed, 15 Jul 2020, Mark Brown wrote:
>
> > > -void save_stack_trace(struct stack_trace *trace)
> > > -{
> > > - __save_stack_trace(current, trace, 0);
> > > + walk_stackframe(task, &frame, consume_entry, cookie);
> > > }
>
> > just an idea for further improvement (and it might be a matter of taste).
>
> Yeah, there's some more stuff that can be done - the reason I'm looking
> at this code is to do reliable stack trace which is going to require at
> least some changes to the actual unwinder, this just seemed like a
> useful block moving things forwards in itself and I particularly wanted
> feedback on patch 1.
Understood. Reliable stack traces would be an important step for live
patching on arm64, so I am looking forward to seeing that.
Thanks
Miroslav
prev parent reply other threads:[~2020-07-17 9:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-15 20:28 [PATCH 0/3] arm64: Convert to ARCH_STACKWALK Mark Brown
2020-07-15 20:28 ` [PATCH 1/3] stacktrace: Remove reliable argument from arch_stack_walk() callback Mark Brown
2020-07-17 9:04 ` Miroslav Benes
2020-07-15 20:28 ` [PATCH 2/3] arm64: stacktrace: Make stack walk callback consistent with generic code Mark Brown
2020-07-15 20:28 ` [PATCH 3/3] arm64: stacktrace: Convert to ARCH_STACKWALK Mark Brown
2020-07-16 11:56 ` Miroslav Benes
2020-07-16 16:20 ` Mark Brown
2020-07-17 9:06 ` Miroslav Benes [this message]
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