From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Andres Freund <andres@anarazel.de>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
live-patching@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>, Jiri Slaby <jslaby@suse.cz>,
Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
Mike Galbraith <efault@gmx.de>
Subject: Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf)
Date: Wed, 12 Jul 2017 17:40:45 -0500 [thread overview]
Message-ID: <20170712224045.4bsa6vngowr72kzk@treble> (raw)
In-Reply-To: <20170712223605.fplf4mvvs66rspxh@alap3.anarazel.de>
On Wed, Jul 12, 2017 at 03:36:05PM -0700, Andres Freund wrote:
> Hi,
>
> On 2017-07-12 17:32:25 -0500, Josh Poimboeuf wrote:
> > If you want perf to be able to use ORC instead of DWARF for user space
> > binaries, that's not currently possible, though I don't see any
> > technical blockers for doing so. Perf would need to be taught to read
> > ORC data.
>
> Right, that's what I was hoping for.
>
>
> > And I think it should be possible to convert DWARF to ORC, assuming the
> > DWARF data is trusted. We could probably add an objtool subcommand for
> > that.
>
> That'd be pretty helpful.
Can I ask why? Is DWARF too slow, or is it something else?
--
Josh
next prev parent reply other threads:[~2017-07-12 22:40 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-11 15:33 Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 01/10] x86/entry/64: Refactor IRQ stacks and make them NMI-safe Josh Poimboeuf
2017-07-18 10:40 ` [tip:x86/asm] " tip-bot for Andy Lutomirski
2017-07-11 15:33 ` [PATCH v3 02/10] x86/entry/64: Initialize the top of the IRQ stack before switching stacks Josh Poimboeuf
2017-07-18 10:41 ` [tip:x86/asm] " tip-bot for Andy Lutomirski
2017-07-11 15:33 ` [PATCH v3 03/10] x86/dumpstack: fix occasionally missing registers Josh Poimboeuf
2017-07-18 10:41 ` [tip:x86/asm] x86/dumpstack: Fix " tip-bot for Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 04/10] x86/dumpstack: fix interrupt and exception stack boundary checks Josh Poimboeuf
2017-07-18 10:42 ` [tip:x86/asm] x86/dumpstack: Fix " tip-bot for Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 05/10] objtool: add ORC unwind table generation Josh Poimboeuf
2017-07-18 10:42 ` [tip:x86/asm] objtool: Add " tip-bot for Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 06/10] objtool, x86: add facility for asm code to provide unwind hints Josh Poimboeuf
2017-07-18 10:43 ` [tip:x86/asm] objtool, x86: Add " tip-bot for Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 07/10] x86/entry/64: add unwind hint annotations Josh Poimboeuf
2017-07-18 10:43 ` [tip:x86/asm] x86/entry/64: Add " tip-bot for Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 08/10] x86/asm: add unwind hint annotations to sync_core() Josh Poimboeuf
2017-07-18 10:43 ` [tip:x86/asm] x86/asm: Add " tip-bot for Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 09/10] x86/unwind: add ORC unwinder Josh Poimboeuf
2017-07-14 17:22 ` [PATCH v3.1 " Josh Poimboeuf
2017-07-20 7:12 ` Jiri Slaby
2017-07-20 21:16 ` Josh Poimboeuf
2017-07-11 15:33 ` [PATCH v3 10/10] x86/kconfig: make it easier to switch to the new " Josh Poimboeuf
2017-07-12 8:27 ` [PATCH v3 00/10] x86: ORC unwinder (previously undwarf) Ingo Molnar
2017-07-12 14:42 ` Josh Poimboeuf
2017-07-12 19:27 ` Ingo Molnar
2017-07-14 17:17 ` Josh Poimboeuf
2017-07-25 9:09 ` Ingo Molnar
2017-07-25 17:58 ` Josh Poimboeuf
2017-07-25 18:46 ` Kees Cook
2017-07-12 21:49 ` Andres Freund
2017-07-12 22:32 ` Josh Poimboeuf
2017-07-12 22:36 ` Andres Freund
2017-07-12 22:40 ` Josh Poimboeuf [this message]
2017-07-12 22:54 ` Andres Freund
2017-07-13 7:12 ` Peter Zijlstra
2017-07-13 8:50 ` Peter Zijlstra
2017-07-13 8:51 ` Peter Zijlstra
2017-07-13 9:19 ` Ingo Molnar
2017-07-13 12:17 ` Josh Poimboeuf
2017-07-13 12:21 ` Josh Poimboeuf
2017-07-13 12:35 ` Josh Poimboeuf
2017-07-14 8:33 ` Ingo Molnar
2017-07-14 8:29 ` Ingo Molnar
2017-07-25 11:55 ` [RFC] perf: Delayed userspace unwind (Was: [PATCH v3 00/10] x86: ORC unwinder) Peter Zijlstra
2017-07-28 14:13 ` Jiri Olsa
2017-07-28 14:21 ` Peter Zijlstra
2017-07-29 3:35 ` Andy Lutomirski
2017-07-29 9:28 ` Peter Zijlstra
2017-07-12 22:30 ` [PATCH v3 00/10] x86: ORC unwinder (previously undwarf) Andi Kleen
2017-07-12 22:47 ` Josh Poimboeuf
2017-07-13 4:29 ` Andi Kleen
2017-07-13 13:15 ` Josh Poimboeuf
2017-07-13 9:29 ` Ingo Molnar
2017-07-12 23:22 ` Andy Lutomirski
2017-07-13 3:03 ` Mike Galbraith
2017-07-13 4:15 ` Andi Kleen
2017-07-13 4:28 ` Mike Galbraith
2017-07-13 4:40 ` Andi Kleen
2017-07-13 5:22 ` Mike Galbraith
2017-07-13 12:02 ` Jiri Kosina
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