From: Christoph Hellwig <hch@lst.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Jessica Yu" <jeyu@kernel.org>, "Christoph Hellwig" <hch@lst.de>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Miroslav Benes" <mbenes@suse.cz>,
"Emil Velikov" <emil.l.velikov@gmail.com>
Subject: Re: [GIT PULL] Modules updates for v5.12
Date: Tue, 23 Feb 2021 21:01:30 +0100 [thread overview]
Message-ID: <20210223200130.GA8059@lst.de> (raw)
In-Reply-To: <CAHk-=wiuoRKa=F3txoVHvnca+H=7gJyL3SFYwd3549v-sa0+QQ@mail.gmail.com>
On Tue, Feb 23, 2021 at 11:55:50AM -0800, Linus Torvalds wrote:
> On Tue, Feb 23, 2021 at 10:42 AM Linus Torvalds
> <torvalds@linux-foundation.org> wrote:
> >
> > I think there is something horribly wrong in my tree, and my build
> > process is now about 30% slower. It went from 5+ minutes to 8+
> > minutes. The main suspect would be some lack of parallelism.
>
> I don't see quite what is wrong, but bisection is clear, and points
> the finger at
>
> 367948220fce "module: remove EXPORT_UNUSED_SYMBOL*"
>
> which looks entirely trivial, but clearly isn't.
>
> It's repeatable. That commit slows down my build hugely.
Does your build now enable TRIM_UNUSED_KSYMS but previously didn't by
chance?
>
> Linus
---end quoted text---
next prev parent reply other threads:[~2021-02-23 20:02 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-23 15:42 [GIT PULL] Modules updates for v5.12 Jessica Yu
2021-02-23 18:26 ` Linus Torvalds
2021-02-23 18:42 ` Linus Torvalds
2021-02-23 19:55 ` Linus Torvalds
2021-02-23 20:01 ` Christoph Hellwig [this message]
2021-02-23 20:03 ` Linus Torvalds
2021-02-23 20:07 ` Linus Torvalds
2021-02-24 7:52 ` Christoph Hellwig
2021-02-24 14:13 ` Jessica Yu
2021-02-24 14:46 ` Masahiro Yamada
2021-02-24 15:30 ` Masahiro Yamada
2021-02-24 16:56 ` Linus Torvalds
2021-02-24 8:33 ` Jessica Yu
2021-02-24 14:40 ` Masahiro Yamada
2021-02-24 19:36 ` Rasmus Villemoes
2021-02-25 15:49 ` Masahiro Yamada
2021-02-25 16:17 ` Masahiro Yamada
2021-02-25 16:19 ` Rasmus Villemoes
2021-02-25 18:37 ` Masahiro Yamada
2021-02-23 20:01 ` Linus Torvalds
2021-02-23 20:32 ` pr-tracker-bot
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