From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>,
Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
Linux-Netdev <netdev@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
David Miller <davem@davemloft.net>, Neil Brown <neilb@suse.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Mike Christie <michaelc@cs.wisc.edu>,
Eric B Munson <emunson@mgebm.net>
Subject: Re: [PATCH 10/17] netvm: Allow skb allocation to use PFMEMALLOC reserves
Date: Thu, 21 Jun 2012 18:43:29 +0200 [thread overview]
Message-ID: <20120621164329.GA6195@breakpoint.cc> (raw)
In-Reply-To: <1340296719.4604.5984.camel@edumazet-glaptop>
> > This is mostly used by nic to refil their RX skb pool. You add the
> > __GFP_MEMALLOC to the allocation to rise the change of a successfull refill
> > for the swap case.
> > A few drivers use build_skb() to create the skb. __netdev_alloc_skb()
> > shouldn't be affected since the allocation happens with GFP_ATOMIC. Looking at
> > TG3 it uses build_skb() and get_pages() / kmalloc(). Shouldn't this be some
> > considered?
>
> Please look at net-next, this was changed recently.
>
> In fact most RX allocations are done using netdev_alloc_frag(), because
> its called from __netdev_alloc_skb()
Argh, this is what I meant more or less. I got the flag magic wrong so I assumed
that this is only called without GFP_ATOMIC but it is not. Thanks for the
hint.
> So tg3 is not anymore the exception, but the norm.
Sebastian
--
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>
WARNING: multiple messages have this Message-ID (diff)
From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>,
Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
Linux-Netdev <netdev@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
David Miller <davem@davemloft.net>, Neil Brown <neilb@suse.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Mike Christie <michaelc@cs.wisc.edu>,
Eric B Munson <emunson@mgebm.net>
Subject: Re: [PATCH 10/17] netvm: Allow skb allocation to use PFMEMALLOC reserves
Date: Thu, 21 Jun 2012 18:43:29 +0200 [thread overview]
Message-ID: <20120621164329.GA6195@breakpoint.cc> (raw)
In-Reply-To: <1340296719.4604.5984.camel@edumazet-glaptop>
> > This is mostly used by nic to refil their RX skb pool. You add the
> > __GFP_MEMALLOC to the allocation to rise the change of a successfull refill
> > for the swap case.
> > A few drivers use build_skb() to create the skb. __netdev_alloc_skb()
> > shouldn't be affected since the allocation happens with GFP_ATOMIC. Looking at
> > TG3 it uses build_skb() and get_pages() / kmalloc(). Shouldn't this be some
> > considered?
>
> Please look at net-next, this was changed recently.
>
> In fact most RX allocations are done using netdev_alloc_frag(), because
> its called from __netdev_alloc_skb()
Argh, this is what I meant more or less. I got the flag magic wrong so I assumed
that this is only called without GFP_ATOMIC but it is not. Thanks for the
hint.
> So tg3 is not anymore the exception, but the norm.
Sebastian
next prev parent reply other threads:[~2012-06-21 16:43 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-20 11:43 [PATCH 00/17] Swap-over-NBD without deadlocking V12 (resend) Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 01/17] mm: sl[au]b: Add knowledge of PFMEMALLOC reserve pages Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-21 21:30 ` Rik van Riel
2012-06-21 21:30 ` Rik van Riel
2012-06-22 9:34 ` Mel Gorman
2012-06-22 9:34 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 02/17] mm: slub: Optimise the SLUB fast path to avoid pfmemalloc checks Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 03/17] mm: Introduce __GFP_MEMALLOC to allow access to emergency reserves Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 04/17] mm: allow PF_MEMALLOC from softirq context Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 05/17] mm: Only set page->pfmemalloc when ALLOC_NO_WATERMARKS was used Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 06/17] mm: Ignore mempolicies when using ALLOC_NO_WATERMARK Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 07/17] net: Introduce sk_gfp_atomic() to allow addition of GFP flags depending on the individual socket Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 12:06 ` Eric Dumazet
2012-06-20 12:06 ` Eric Dumazet
2012-06-20 14:20 ` Mel Gorman
2012-06-20 14:20 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 08/17] net: Do not coalesce skbs belonging to PFMEMALLOC sockets Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 12:04 ` Eric Dumazet
2012-06-20 12:04 ` Eric Dumazet
2012-06-20 13:36 ` Mel Gorman
2012-06-20 13:36 ` Mel Gorman
2012-06-20 13:51 ` Eric Dumazet
2012-06-20 13:51 ` Eric Dumazet
2012-06-20 14:18 ` Mel Gorman
2012-06-20 14:18 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 09/17] netvm: Allow the use of __GFP_MEMALLOC by specific sockets Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 10/17] netvm: Allow skb allocation to use PFMEMALLOC reserves Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-21 16:09 ` Sebastian Andrzej Siewior
2012-06-21 16:09 ` Sebastian Andrzej Siewior
2012-06-22 10:00 ` Mel Gorman
2012-06-22 10:00 ` Mel Gorman
2012-06-21 16:30 ` Sebastian Andrzej Siewior
2012-06-21 16:30 ` Sebastian Andrzej Siewior
2012-06-21 16:38 ` Eric Dumazet
2012-06-21 16:38 ` Eric Dumazet
2012-06-21 16:43 ` Sebastian Andrzej Siewior [this message]
2012-06-21 16:43 ` Sebastian Andrzej Siewior
2012-06-22 10:54 ` Mel Gorman
2012-06-22 10:54 ` Mel Gorman
2012-06-22 11:27 ` Sebastian Andrzej Siewior
2012-06-22 11:27 ` Sebastian Andrzej Siewior
2012-06-20 11:44 ` [PATCH 11/17] netvm: Propagate page->pfmemalloc to skb Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 12/17] netvm: Propagate page->pfmemalloc from skb_alloc_page " Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 13/17] netvm: Set PF_MEMALLOC as appropriate during SKB processing Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 14/17] mm: Micro-optimise slab to avoid a function call Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 15/17] nbd: Set SOCK_MEMALLOC for access to PFMEMALLOC reserves Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 16/17] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 17/17] mm: Account for the number of times direct reclaimers get throttled Mel Gorman
2012-06-20 11:44 ` Mel Gorman
-- strict thread matches above, loose matches on Subject: below --
2012-05-17 14:50 [PATCH 00/17] Swap-over-NBD without deadlocking V11 Mel Gorman
2012-05-17 14:50 ` [PATCH 10/17] netvm: Allow skb allocation to use PFMEMALLOC reserves Mel Gorman
2012-05-17 14:50 ` Mel Gorman
2012-05-17 20:12 ` David Miller
2012-05-17 20:12 ` David Miller
2012-05-10 13:44 [PATCH 00/17] Swap-over-NBD without deadlocking V10 Mel Gorman
2012-05-10 13:45 ` [PATCH 10/17] netvm: Allow skb allocation to use PFMEMALLOC reserves Mel Gorman
2012-05-10 13:45 ` Mel Gorman
2012-05-11 4:57 ` David Miller
2012-05-11 4:57 ` David Miller
2012-05-11 14:32 ` Mel Gorman
2012-05-11 14:32 ` Mel Gorman
2012-05-11 14:42 ` Peter Zijlstra
2012-05-11 14:42 ` Peter Zijlstra
2012-05-11 15:07 ` Mel Gorman
2012-05-11 15:07 ` Mel Gorman
2012-05-11 21:17 ` David Miller
2012-05-11 21:17 ` David Miller
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=20120621164329.GA6195@breakpoint.cc \
--to=sebastian@breakpoint.cc \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=davem@davemloft.net \
--cc=emunson@mgebm.net \
--cc=eric.dumazet@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=michaelc@cs.wisc.edu \
--cc=neilb@suse.de \
--cc=netdev@vger.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.