From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Nick Piggin <npiggin@suse.de>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
Ingo Molnar <mingo@elte.hu>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, cl@linux-foundation.org,
torvalds@linux-foundation.org
Subject: Re: [PATCH v2] slab,slub: ignore __GFP_WAIT if we're booting or suspending
Date: Fri, 12 Jun 2009 19:59:34 +1000 [thread overview]
Message-ID: <1244800774.7172.116.camel@pasglop> (raw)
In-Reply-To: <20090612095206.GA13607@wotan.suse.de>
> Maybe if we just not make it a general "tweak gfpflag" bit (at
> least not until a bit more discussion), but a specific workaround
> for the local_irq_enable in early boot problem.
>
> Seems like it would not be hard to track things down if we add
> a warning if we have GFP_WAIT and interrupts are not enabled...
But tweaking local_irq_enable() will have a lot more performance & bloat
impact overall on the normal case.
Cheers,
Ben.
WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Nick Piggin <npiggin@suse.de>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
Ingo Molnar <mingo@elte.hu>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, cl@linux-foundation.org,
torvalds@linux-foundation.org
Subject: Re: [PATCH v2] slab,slub: ignore __GFP_WAIT if we're booting or suspending
Date: Fri, 12 Jun 2009 19:59:34 +1000 [thread overview]
Message-ID: <1244800774.7172.116.camel@pasglop> (raw)
In-Reply-To: <20090612095206.GA13607@wotan.suse.de>
> Maybe if we just not make it a general "tweak gfpflag" bit (at
> least not until a bit more discussion), but a specific workaround
> for the local_irq_enable in early boot problem.
>
> Seems like it would not be hard to track things down if we add
> a warning if we have GFP_WAIT and interrupts are not enabled...
But tweaking local_irq_enable() will have a lot more performance & bloat
impact overall on the normal case.
Cheers,
Ben.
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next prev parent reply other threads:[~2009-06-12 10:00 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-12 8:13 [PATCH 2/2] slab,slub: ignore __GFP_WAIT if we're booting or suspending Pekka J Enberg
2009-06-12 8:13 ` Pekka J Enberg
2009-06-12 9:03 ` [PATCH v2] " Pekka J Enberg
2009-06-12 9:03 ` Pekka J Enberg
2009-06-12 9:10 ` Ingo Molnar
2009-06-12 9:10 ` Ingo Molnar
2009-06-12 9:21 ` Benjamin Herrenschmidt
2009-06-12 9:21 ` Benjamin Herrenschmidt
2009-06-12 9:24 ` Pekka Enberg
2009-06-12 9:24 ` Pekka Enberg
2009-06-12 9:36 ` Benjamin Herrenschmidt
2009-06-12 9:36 ` Benjamin Herrenschmidt
2009-06-12 9:45 ` Pekka J Enberg
2009-06-12 9:45 ` Pekka J Enberg
2009-06-12 9:58 ` Benjamin Herrenschmidt
2009-06-12 9:58 ` Benjamin Herrenschmidt
2009-06-12 10:00 ` Pekka Enberg
2009-06-12 10:00 ` Pekka Enberg
2009-06-12 15:22 ` Andrew Morton
2009-06-12 15:22 ` Andrew Morton
2009-06-12 9:49 ` Pekka Enberg
2009-06-12 9:49 ` Pekka Enberg
2009-06-12 9:52 ` Nick Piggin
2009-06-12 9:52 ` Nick Piggin
2009-06-12 9:54 ` Pekka Enberg
2009-06-12 9:54 ` Pekka Enberg
2009-06-12 9:59 ` Benjamin Herrenschmidt [this message]
2009-06-12 9:59 ` Benjamin Herrenschmidt
2009-06-25 4:38 ` Nick Piggin
2009-06-25 4:38 ` Nick Piggin
2009-06-12 10:07 ` Ingo Molnar
2009-06-12 10:07 ` Ingo Molnar
2009-06-12 10:11 ` Pekka Enberg
2009-06-12 10:11 ` Pekka Enberg
2009-06-12 10:15 ` Nick Piggin
2009-06-12 10:15 ` Nick Piggin
2009-06-12 10:30 ` Pekka J Enberg
2009-06-12 10:30 ` Pekka J Enberg
2009-06-12 10:32 ` Pekka Enberg
2009-06-12 10:32 ` Pekka Enberg
2009-06-12 15:16 ` Linus Torvalds
2009-06-12 15:16 ` Linus Torvalds
2009-06-12 15:16 ` Pekka Enberg
2009-06-12 15:16 ` Pekka Enberg
2009-06-12 11:13 ` Benjamin Herrenschmidt
2009-06-12 11:13 ` Benjamin Herrenschmidt
2009-06-12 11:24 ` Benjamin Herrenschmidt
2009-06-12 11:24 ` Benjamin Herrenschmidt
2009-06-12 11:11 ` Benjamin Herrenschmidt
2009-06-12 11:11 ` Benjamin Herrenschmidt
2009-06-12 11:34 ` Pekka Enberg
2009-06-12 11:34 ` Pekka Enberg
2009-06-12 11:41 ` Benjamin Herrenschmidt
2009-06-12 11:41 ` Benjamin Herrenschmidt
2009-06-12 11:43 ` Pekka Enberg
2009-06-12 11:43 ` Pekka Enberg
2009-06-12 15:30 ` Andrew Morton
2009-06-12 15:30 ` Andrew Morton
2009-06-12 21:42 ` Benjamin Herrenschmidt
2009-06-12 21:42 ` Benjamin Herrenschmidt
2009-06-25 4:41 ` Nick Piggin
2009-06-25 4:41 ` Nick Piggin
2009-06-12 11:09 ` Benjamin Herrenschmidt
2009-06-12 11:09 ` Benjamin Herrenschmidt
2009-06-12 15:04 ` Linus Torvalds
2009-06-12 15:04 ` Linus Torvalds
2009-06-12 15:05 ` Pekka Enberg
2009-06-12 15:05 ` Pekka Enberg
2009-06-19 14:59 ` Pavel Machek
2009-06-19 14:59 ` Pavel Machek
2009-06-19 22:27 ` Benjamin Herrenschmidt
2009-06-19 22:27 ` Benjamin Herrenschmidt
2009-06-19 23:23 ` Pavel Machek
2009-06-19 23:23 ` Pavel Machek
2009-06-19 23:50 ` Benjamin Herrenschmidt
2009-06-19 23:50 ` Benjamin Herrenschmidt
2009-06-20 0:28 ` Pavel Machek
2009-06-20 0:28 ` Pavel Machek
2009-06-20 2:10 ` Benjamin Herrenschmidt
2009-06-20 2:10 ` Benjamin Herrenschmidt
2009-06-21 6:18 ` Pavel Machek
2009-06-21 6:18 ` Pavel Machek
2009-06-21 9:31 ` Benjamin Herrenschmidt
2009-06-21 9:31 ` Benjamin Herrenschmidt
2009-06-25 4:34 ` Nick Piggin
2009-06-25 4:34 ` Nick Piggin
2009-06-25 9:56 ` Benjamin Herrenschmidt
2009-06-25 9:56 ` Benjamin Herrenschmidt
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