From: peterz@infradead.org
To: Julien Thierry <jthierry@redhat.com>
Cc: linux-kernel@vger.kernel.org, jpoimboe@redhat.com,
mhelsley@vmware.com, mbenes@suse.cz
Subject: Re: [PATCH v3 4/4] objtool: orc_gen: Move orc_entry out of instruction structure
Date: Thu, 30 Jul 2020 15:33:43 +0200 [thread overview]
Message-ID: <20200730133343.GN2655@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <e4e239ad-120e-bd8f-4128-6976146c8512@redhat.com>
On Thu, Jul 30, 2020 at 01:40:48PM +0100, Julien Thierry wrote:
>
>
> On 7/30/20 11:03 AM, peterz@infradead.org wrote:
> > On Thu, Jul 30, 2020 at 10:41:43AM +0100, Julien Thierry wrote:
> > > One orc_entry is associated with each instruction in the object file,
> > > but having the orc_entry contained by the instruction structure forces
> > > architectures not implementing the orc subcommands to provide a dummy
> > > definition of the orc_entry.
> I guess I forgot about the usecase of running objtool on vmlinux...
Right, and LTO builds will even do ORC at that level.
> On a kernel build for x86_64 defconfig, the difference in time seems to be
> withing the noise.
Good.
> But I agree the proposed code is not ideal and on the other we've tried
> avoiding #ifdef in the code. Ideally I'd have an empty orc_entry definition
> when SUBCMD_ORC is not implemented.
>
> Would you have a suggested approach to do that?
How ugly is having that:
struct orc_entry { };
?
next prev parent reply other threads:[~2020-07-30 13:33 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 9:41 [PATCH v3 0/4] Remove dependency of check subcmd upon orc Julien Thierry
2020-07-30 9:41 ` [PATCH v3 1/4] objtool: Move object file loading out of check Julien Thierry
2020-07-30 14:09 ` Josh Poimboeuf
2020-07-30 14:42 ` Julien Thierry
2020-07-30 9:41 ` [PATCH v3 2/4] objtool: Move orc outside " Julien Thierry
2020-07-30 9:57 ` peterz
2020-07-30 12:40 ` Julien Thierry
2020-07-30 13:22 ` peterz
2020-07-30 13:29 ` Julien Thierry
2020-07-30 14:15 ` Josh Poimboeuf
2020-07-30 14:44 ` Julien Thierry
2020-07-31 7:56 ` Miroslav Benes
2020-07-31 8:19 ` Julien Thierry
2020-07-30 9:41 ` [PATCH v3 3/4] objtool: orc: Skip setting orc_entry for non-text sections Julien Thierry
2020-07-30 9:41 ` [PATCH v3 4/4] objtool: orc_gen: Move orc_entry out of instruction structure Julien Thierry
2020-07-30 10:03 ` peterz
2020-07-30 12:40 ` Julien Thierry
2020-07-30 13:33 ` peterz [this message]
2020-07-30 13:45 ` Julien Thierry
2020-07-30 14:28 ` Josh Poimboeuf
2020-07-30 14:06 ` [PATCH v3 0/4] Remove dependency of check subcmd upon orc Josh Poimboeuf
2020-07-30 14:42 ` Julien Thierry
2020-07-30 15:05 ` Josh Poimboeuf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200730133343.GN2655@hirez.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=jpoimboe@redhat.com \
--cc=jthierry@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mbenes@suse.cz \
--cc=mhelsley@vmware.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox