From: Dave Hansen <dave@sr71.net>
To: Christoph Lameter <cl@linux.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, penberg@kernel.org
Subject: Re: [RFC][PATCH 2/9] mm: slub: abstract out double cmpxchg option
Date: Tue, 14 Jan 2014 13:41:11 -0800 [thread overview]
Message-ID: <52D5AEF7.6020707@sr71.net> (raw)
In-Reply-To: <alpine.DEB.2.10.1401141346310.19618@nuc>
On 01/14/2014 11:49 AM, Christoph Lameter wrote:
> On Tue, 14 Jan 2014, Dave Hansen wrote:
>> I found this useful to have in my testing. I would like to have
>> it available for a bit, at least until other folks have had a
>> chance to do some testing with it.
>
> I dont really see the point of this patch since we already have
> CONFIG_HAVE_ALIGNED_STRUCT_PAGE to play with.
With the current code, if you wanted to turn off the double-cmpxchg abd
get a 56-byte 'struct page' how would you do it? Can you do it with a
.config, or do you need to hack the code?
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@sr71.net>
To: Christoph Lameter <cl@linux.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, penberg@kernel.org
Subject: Re: [RFC][PATCH 2/9] mm: slub: abstract out double cmpxchg option
Date: Tue, 14 Jan 2014 13:41:11 -0800 [thread overview]
Message-ID: <52D5AEF7.6020707@sr71.net> (raw)
In-Reply-To: <alpine.DEB.2.10.1401141346310.19618@nuc>
On 01/14/2014 11:49 AM, Christoph Lameter wrote:
> On Tue, 14 Jan 2014, Dave Hansen wrote:
>> I found this useful to have in my testing. I would like to have
>> it available for a bit, at least until other folks have had a
>> chance to do some testing with it.
>
> I dont really see the point of this patch since we already have
> CONFIG_HAVE_ALIGNED_STRUCT_PAGE to play with.
With the current code, if you wanted to turn off the double-cmpxchg abd
get a 56-byte 'struct page' how would you do it? Can you do it with a
.config, or do you need to hack the code?
next prev parent reply other threads:[~2014-01-14 21:42 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-14 18:00 [RFC][PATCH 0/9] re-shrink 'struct page' when SLUB is on Dave Hansen
2014-01-14 18:00 ` Dave Hansen
2014-01-14 18:00 ` [RFC][PATCH 1/9] mm: slab/slub: use page->list consistently instead of page->lru Dave Hansen
2014-01-14 18:00 ` Dave Hansen
2014-01-14 19:31 ` Christoph Lameter
2014-01-14 19:31 ` Christoph Lameter
2014-01-15 2:31 ` David Rientjes
2014-01-15 2:31 ` David Rientjes
2014-01-15 6:58 ` Dave Hansen
2014-01-15 6:58 ` Dave Hansen
2014-01-15 7:16 ` David Rientjes
2014-01-15 7:16 ` David Rientjes
2014-01-16 0:11 ` Kirill A. Shutemov
2014-01-16 0:11 ` Kirill A. Shutemov
2014-01-14 18:00 ` [RFC][PATCH 2/9] mm: slub: abstract out double cmpxchg option Dave Hansen
2014-01-14 18:00 ` Dave Hansen
2014-01-14 19:49 ` Christoph Lameter
2014-01-14 19:49 ` Christoph Lameter
2014-01-14 21:41 ` Dave Hansen [this message]
2014-01-14 21:41 ` Dave Hansen
2014-01-15 2:37 ` David Rientjes
2014-01-15 2:37 ` David Rientjes
2014-01-16 16:45 ` Christoph Lameter
2014-01-16 16:45 ` Christoph Lameter
2014-01-16 17:13 ` Dave Hansen
2014-01-16 17:13 ` Dave Hansen
2014-01-14 18:00 ` [RFC][PATCH 3/9] mm: page->pfmemalloc only used by slab/skb Dave Hansen
2014-01-14 18:00 ` Dave Hansen
2014-01-14 19:49 ` Christoph Lameter
2014-01-14 19:49 ` Christoph Lameter
2014-01-14 22:17 ` Dave Hansen
2014-01-14 22:17 ` Dave Hansen
2014-01-15 2:45 ` David Rientjes
2014-01-15 2:45 ` David Rientjes
2014-01-16 0:16 ` Kirill A. Shutemov
2014-01-16 0:16 ` Kirill A. Shutemov
2014-01-14 18:00 ` [RFC][PATCH 4/9] mm: slabs: reset page at free Dave Hansen
2014-01-14 18:00 ` Dave Hansen
2014-01-15 2:48 ` David Rientjes
2014-01-15 2:48 ` David Rientjes
2014-01-16 18:35 ` Dave Hansen
2014-01-16 18:35 ` Dave Hansen
2014-01-16 18:32 ` Christoph Lameter
2014-01-16 18:32 ` Christoph Lameter
2014-01-14 18:00 ` [RFC][PATCH 5/9] mm: rearrange struct page Dave Hansen
2014-01-14 18:00 ` Dave Hansen
2014-01-16 0:20 ` Kirill A. Shutemov
2014-01-16 0:20 ` Kirill A. Shutemov
2014-01-16 18:34 ` Christoph Lameter
2014-01-16 18:34 ` Christoph Lameter
2014-01-16 22:29 ` Dave Hansen
2014-01-16 22:29 ` Dave Hansen
2014-01-17 14:58 ` Christoph Lameter
2014-01-17 14:58 ` Christoph Lameter
2014-01-14 18:01 ` [RFC][PATCH 6/9] mm: slub: rearrange 'struct page' fields Dave Hansen
2014-01-14 18:01 ` Dave Hansen
2014-01-14 18:01 ` [RFC][PATCH 7/9] mm: slub: remove 'struct page' alignment restrictions Dave Hansen
2014-01-14 18:01 ` Dave Hansen
2014-01-14 18:01 ` [RFC][PATCH 8/9] mm: slub: cleanups after code churn Dave Hansen
2014-01-14 18:01 ` Dave Hansen
2014-01-14 18:01 ` [RFC][PATCH 9/9] mm: fix alignment checks on 32-bit Dave Hansen
2014-01-14 18:01 ` Dave Hansen
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