From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Alex Thorlton <athorlton@sgi.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
"Eric W . Biederman" <ebiederm@xmission.com>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Andi Kleen <ak@linux.intel.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Dave Hansen <dave.hansen@intel.com>,
Dave Jones <davej@redhat.com>,
David Howells <dhowells@redhat.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Kees Cook <keescook@chromium.org>, Mel Gorman <mgorman@suse.de>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Oleg Nesterov <oleg@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Rik van Riel <riel@redhat.com>, Robin Holt <robinmholt@gmail.com>,
Sedat Dilek <sedat.dilek@gmail.com>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCHv4 00/10] split page table lock for PMD tables
Date: Mon, 7 Oct 2013 12:48:20 +0300 (EEST) [thread overview]
Message-ID: <20131007094820.13A0CE0090@blue.fi.intel.com> (raw)
In-Reply-To: <20131004203147.GE32110@sgi.com>
Alex Thorlton wrote:
> > > Sorry for the delay on these results. I hit some strange issues with
> > > running thp_memscale on systems with either of the following
> > > combinations of configuration options set:
> > >
> > > [thp off]
> > > HUGETLBFS=y
> > > HUGETLB_PAGE=y
> > > NUMA_BALANCING=y
> > > NUMA_BALANCING_DEFAULT_ENABLED=y
> > >
> > > [thp on or off]
> > > HUGETLBFS=n
> > > HUGETLB_PAGE=n
> > > NUMA_BALANCING=y
> > > NUMA_BALANCING_DEFAULT_ENABLED=y
> > >
> > > I'm getting segfaults intermittently, as well as some weird RCU sched
> > > errors. This happens in vanilla 3.12-rc2, so it doesn't have anything
> > > to do with your patches, but I thought I'd let you know. There didn't
> > > used to be any issues with this test, so I think there's a subtle kernel
> > > bug here. That's, of course, an entirely separate issue though.
> >
> > I'll take a look next week, if nobody does it before.
>
> I'm starting a bisect now. Not sure how long it'll take, but I'll keep
> you posted.
I don't see the issue. Could you share your kernel config?
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2013-10-07 9:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-27 13:16 [PATCHv4 00/10] split page table lock for PMD tables Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 01/10] mm: rename USE_SPLIT_PTLOCKS to USE_SPLIT_PTE_PTLOCKS Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 02/10] mm: convert mm->nr_ptes to atomic_t Kirill A. Shutemov
2013-09-27 20:46 ` Cody P Schafer
2013-09-27 21:01 ` Dave Hansen
2013-09-27 22:24 ` Kirill A. Shutemov
2013-09-28 0:13 ` Johannes Weiner
2013-09-28 16:12 ` Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 03/10] mm: introduce api for split page table lock for PMD level Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 04/10] mm, thp: change pmd_trans_huge_lock() to return taken lock Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 05/10] mm, thp: move ptl taking inside page_check_address_pmd() Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 06/10] mm, thp: do not access mm->pmd_huge_pte directly Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 07/10] mm, hugetlb: convert hugetlbfs to use split pmd lock Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 08/10] mm: convent the rest to new page table lock api Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 09/10] mm: implement split page table lock for PMD level Kirill A. Shutemov
2013-10-03 23:11 ` Andrew Morton
2013-10-03 23:38 ` Kirill A. Shutemov
2013-10-04 0:34 ` Kirill A. Shutemov
2013-10-04 7:21 ` Peter Zijlstra
2013-10-03 23:42 ` Kirill A. Shutemov
2013-09-27 13:16 ` [PATCHv4 10/10] x86, mm: enable " Kirill A. Shutemov
2013-10-04 20:12 ` [PATCHv4 00/10] split page table lock for PMD tables Alex Thorlton
2013-10-04 20:26 ` Kirill A. Shutemov
2013-10-04 20:31 ` Alex Thorlton
2013-10-07 9:48 ` Kirill A. Shutemov [this message]
2013-10-08 21:47 ` Alex Thorlton
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