From: Mike Galbraith <efault@gmx.de>
To: Andi Kleen <andi@firstfloor.org>, Josh Poimboeuf <jpoimboe@redhat.com>
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>
Subject: Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf)
Date: Thu, 13 Jul 2017 05:03:00 +0200 [thread overview]
Message-ID: <1499914980.5107.18.camel@gmx.de> (raw)
In-Reply-To: <87wp7dmgoo.fsf@firstfloor.org>
On Wed, 2017-07-12 at 15:30 -0700, Andi Kleen wrote:
> Josh Poimboeuf <jpoimboe@redhat.com> writes:
> >
> > The ORC data format does have a few downsides compared to DWARF. The
> > ORC unwind tables take up ~1MB more memory than DWARF eh_frame tables.
> >
> Can we have an option to just use dwarf instead? For people
> who don't want to waste a MB+ to solve a problem that doesn't
> exist (as proven by many years of opensuse kernel experience)
Sure the dwarf unwinder works well for crashes, but at the price of
demolishing ftrace/perf utility.
-Mike
next prev parent reply other threads:[~2017-07-13 3:04 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-11 15:33 [PATCH v3 00/10] x86: ORC unwinder (previously undwarf) 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
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 [this message]
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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