From: Andi Kleen <ak@linux.intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
linux-mm@kvack.org, Dave Young <dyoung@redhat.com>
Subject: Re: [PATCH] Add a test program for variable page sizes in mmap/shmget v2
Date: Thu, 8 Nov 2012 14:01:50 -0800 [thread overview]
Message-ID: <20121108220150.GA2726@tassilo.jf.intel.com> (raw)
In-Reply-To: <20121108132946.c2b9e8b7.akpm@linux-foundation.org>
On Thu, Nov 08, 2012 at 01:29:46PM -0800, Andrew Morton wrote:
> On Thu, 8 Nov 2012 13:01:26 -0800
> Andi Kleen <andi@firstfloor.org> wrote:
>
> > From: Andi Kleen <ak@linux.intel.com>
> >
> > Not hooked up to the harness so far, because it usually needs
> > special boot options for 1GB pages.
>
> This isn't the case from my reading: we *can* hook it up now?
Yes, but also need to set the sysctls.
> > index b336b24..7300d07 100644
> > --- a/tools/testing/selftests/vm/Makefile
> > +++ b/tools/testing/selftests/vm/Makefile
> > @@ -1,9 +1,9 @@
> > # Makefile for vm selftests
> >
> > CC = $(CROSS_COMPILE)gcc
> > -CFLAGS = -Wall -Wextra
> > +CFLAGS = -Wall
>
> Why this? It doesn't change anything with my gcc so I think
> I'll revert that.
There were lots of warnings with signed/unsigned comparisons on my gcc
(4.6) and since I personally consider those useless I just disabled
the warning.
>
> I just tried a `make run_vmtests' and it fell on its face.
> There's a little comment in there saying "please run as root", but we
> don't *want* that. The selftests should be runnable as non-root and
> should, where unavoidable, emit a warning and proceed if elevated
> permissions are required.
My test requires root. That is only the ipc test requires root.
To be honest I have no idea why but I don't claim to understand
why ipcperms() does all the weird stuff it does.
>
> I tried running it as root and my workstation hung, requiring a reboot.
> Won't be doing that again.
My test system didn't hang FWIW.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2012-11-08 22:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-08 21:01 [PATCH] Add a test program for variable page sizes in mmap/shmget v2 Andi Kleen
2012-11-08 21:29 ` Andrew Morton
2012-11-08 22:01 ` Andi Kleen [this message]
2012-11-08 22:09 ` Andrew Morton
2012-11-09 0:38 ` Andi Kleen
2012-11-12 9:35 ` Dave Young
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=20121108220150.GA2726@tassilo.jf.intel.com \
--to=ak@linux.intel.com \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=dyoung@redhat.com \
--cc=linux-mm@kvack.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).