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From: Ingo Molnar <mingo@kernel.org>
To: 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>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v2 4/8] objtool: add undwarf debuginfo generation
Date: Thu, 29 Jun 2017 16:46:18 +0200	[thread overview]
Message-ID: <20170629144618.vdzem7o6ib5nqab6@gmail.com> (raw)
In-Reply-To: <20170629140404.qgcvxhcgm7iywrkb@treble>


* Josh Poimboeuf <jpoimboe@redhat.com> wrote:

> > Plus, shouldn't we use __packed for 'struct undwarf' to minimize the 
> > structure's size (to 6 bytes AFAICS?) - or is optimal packing of the main 
> > undwarf array already guaranteed on every platform with this layout?
> 
> Ah yes, it should definitely be packed (assuming that doesn't affect performance 
> negatively).

So if I count that correctly that should shave another ~1MB off a typical ~4MB 
table size?

Thanks,

	Ingo

  reply	other threads:[~2017-06-29 14:46 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-28 15:11 [PATCH v2 0/8] x86: undwarf unwinder Josh Poimboeuf
2017-06-28 15:11 ` [PATCH v2 1/8] objtool: move checking code to check.c Josh Poimboeuf
2017-06-30 13:12   ` [tip:core/objtool] objtool: Move " tip-bot for Josh Poimboeuf
2017-06-28 15:11 ` [PATCH v2 2/8] objtool, x86: add several functions and files to the objtool whitelist Josh Poimboeuf
2017-06-30 13:12   ` [tip:core/objtool] objtool, x86: Add " tip-bot for Josh Poimboeuf
2017-06-28 15:11 ` [PATCH v2 3/8] objtool: stack validation 2.0 Josh Poimboeuf
2017-06-30  8:32   ` Ingo Molnar
2017-06-30 13:23     ` Josh Poimboeuf
2017-06-30 13:26       ` Josh Poimboeuf
2017-06-30 14:09     ` [PATCH] objtool: silence warnings for functions which use iret Josh Poimboeuf
2017-06-30 17:49       ` [tip:core/objtool] objtool: Silence warnings for functions which use IRET tip-bot for Josh Poimboeuf
2017-06-30 13:13   ` [tip:core/objtool] objtool: Implement stack validation 2.0 tip-bot for Josh Poimboeuf
2017-06-28 15:11 ` [PATCH v2 4/8] objtool: add undwarf debuginfo generation Josh Poimboeuf
2017-06-29  7:14   ` Ingo Molnar
2017-06-29 13:40     ` Josh Poimboeuf
2017-06-29  7:25   ` Ingo Molnar
2017-06-29 14:04     ` Josh Poimboeuf
2017-06-29 14:46       ` Ingo Molnar [this message]
2017-06-29 15:06         ` Josh Poimboeuf
2017-07-06 20:36           ` Josh Poimboeuf
2017-07-07  9:44             ` Ingo Molnar
2017-07-11  2:58               ` Josh Poimboeuf
2017-07-11  8:40                 ` Ingo Molnar
2017-06-28 15:11 ` [PATCH v2 5/8] objtool, x86: add facility for asm code to provide unwind hints Josh Poimboeuf
2017-06-28 15:11 ` [PATCH v2 6/8] x86/entry: add unwind hint annotations Josh Poimboeuf
2017-06-29 17:53   ` Josh Poimboeuf
2017-06-29 18:50     ` Andy Lutomirski
2017-06-29 19:05       ` Josh Poimboeuf
2017-06-29 21:09         ` Andy Lutomirski
2017-06-29 21:41           ` Josh Poimboeuf
2017-06-29 22:59             ` Andy Lutomirski
2017-06-30  2:12               ` Josh Poimboeuf
2017-06-30  5:05                 ` Andy Lutomirski
2017-06-30  5:41                   ` Andy Lutomirski
2017-06-30 13:11                     ` Josh Poimboeuf
2017-06-30 15:44                       ` Andy Lutomirski
2017-06-30 15:55                         ` Josh Poimboeuf
2017-06-30 15:56                           ` Andy Lutomirski
2017-06-30 16:16                             ` Josh Poimboeuf
2017-06-28 15:11 ` [PATCH v2 7/8] x86/asm: add unwind hint annotations to sync_core() Josh Poimboeuf
2017-06-28 15:11 ` [PATCH v2 8/8] x86/unwind: add undwarf unwinder Josh Poimboeuf
2017-06-29  7:55 ` [PATCH v2 0/8] x86: " Ingo Molnar
2017-06-29 14:12   ` Josh Poimboeuf
2017-06-29 19:13     ` Josh Poimboeuf

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