From: Michael Ellerman <mpe@ellerman.id.au>
To: Michael Ellerman <mpe@ellerman.id.au>, <linuxppc-dev@ozlabs.org>
Cc: linux-kernel@vger.kernel.org, luto@kernel.org,
Anton Blanchard <anton@samba.org>
Subject: Re: powerpc/vdso: Emit GNU & SysV hashes
Date: Fri, 2 Oct 2015 17:47:10 +1000 (AEST) [thread overview]
Message-ID: <20151002074710.5E434140B0E@ozlabs.org> (raw)
In-Reply-To: <1438916742-31924-1-git-send-email-mpe@ellerman.id.au>
On Fri, 2015-07-08 at 03:05:42 UTC, Michael Ellerman wrote:
> Andy Lutomirski says:
>
> Some dynamic loaders may be slightly faster if a GNU hash is
> available.
>
> This is unlikely to have any measurable effect on the time it takes
> to resolve vdso symbols (since there are so few of them). In some
> contexts, it can be a win for a different reason: if every DSO has a
> GNU hash section, then libc can avoid calculating SysV hashes at
> all. Both musl and glibc appear to have this optimization.
>
> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Applied to powerpc next.
https://git.kernel.org/powerpc/c/787b393c9f6300c343600d39
cheers
prev parent reply other threads:[~2015-10-02 7:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-07 3:05 [PATCH] powerpc/vdso: Emit GNU & SysV hashes Michael Ellerman
2015-10-02 7:47 ` Michael Ellerman [this message]
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=20151002074710.5E434140B0E@ozlabs.org \
--to=mpe@ellerman.id.au \
--cc=anton@samba.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=luto@kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).