From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Drew Richardson <drew.richardson@arm.com>
Cc: will.deacon@arm.com, a.p.zijlstra@chello.nl, mingo@redhat.com,
acme@kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, wade.cherry@arm.com,
pawel.moll@arm.com
Subject: Re: [PATCH] arm: perf: Fix userspace call stack walking
Date: Thu, 1 Oct 2015 20:10:41 +0100 [thread overview]
Message-ID: <20151001191041.GY21513@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20151001172643.GA23147@dreric01-gentoo.localdomain>
On Thu, Oct 01, 2015 at 10:26:47AM -0700, Drew Richardson wrote:
> The layout of stack frames has changed over time. Testing using a
> arm-linux-gnueabi gcc-4.2 from 2007 the original code didn't work but
> this new code does. It also works with clang as well as newer versions
> of gcc.
Can you point to a modern ARM distribution where perf actually works with
calltraces into userspace?
--
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2015-10-01 19:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 17:26 Drew Richardson
2015-10-01 19:10 ` Russell King - ARM Linux [this message]
2015-10-01 19:47 ` Drew Richardson
2015-10-05 12:32 ` Will Deacon
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