From: Peter Zijlstra <peterz@infradead.org>
To: Huang Ying <ying.huang@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Len Brown <lenb@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andi Kleen <andi@firstfloor.org>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
Mauro Carvalho Chehab <mchehab@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH -v4 1/2] lib, Make gen_pool memory allocator lockless
Date: Wed, 17 Nov 2010 11:49:43 +0100 [thread overview]
Message-ID: <1289990983.2109.678.camel@laptop> (raw)
In-Reply-To: <1289973914.8719.1261.camel@yhuang-dev>
On Wed, 2010-11-17 at 14:05 +0800, Huang Ying wrote:
> Hi, Peter,
>
> Do you think think irq_work should depend on that? Or we just
> reimplement irq_work based on lockless list and make irq_work depends on
> lockless list?
If you can make it use a lockless list thing that's fine.
I'm not sure Andrew's CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG makes much sense
for CONFIG_ARCH_HAVE_NMI=n though..
Anyway, make sure to consolidate net/rds/xlist.h and its users, having
two lockless lists is one too many.
> At least as the first step, I prefer to just make lockless list depend
> on CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG.
But only if the platform has NMIs, otherwise its moot.
next prev parent reply other threads:[~2010-11-17 10:49 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-16 0:53 [PATCH -v4 0/2] Lockless memory allocator and list Huang Ying
2010-11-16 0:53 ` [PATCH -v4 1/2] lib, Make gen_pool memory allocator lockless Huang Ying
2010-11-16 21:50 ` Andrew Morton
2010-11-17 2:18 ` Huang Ying
2010-11-17 2:35 ` Andrew Morton
2010-11-17 3:03 ` Huang Ying
2010-11-17 3:57 ` Andrew Morton
2010-11-17 6:05 ` Huang Ying
2010-11-17 10:49 ` Peter Zijlstra [this message]
2010-11-17 11:16 ` huang ying
2010-11-17 11:16 ` huang ying
2010-11-17 11:38 ` Peter Zijlstra
2010-11-17 10:40 ` Peter Zijlstra
2010-11-17 11:47 ` huang ying
2010-11-17 11:53 ` Peter Zijlstra
2010-11-18 1:14 ` Huang Ying
2010-11-18 8:34 ` Peter Zijlstra
2010-11-18 8:43 ` Paul Mundt
2010-11-18 8:57 ` Peter Zijlstra
2010-11-18 9:03 ` Paul Mundt
2010-11-16 0:53 ` [PATCH -v4 2/2] lib, Add lock-less NULL terminated single list Huang Ying
2010-11-16 11:50 ` Peter Zijlstra
2010-11-16 16:33 ` Linus Torvalds
2010-11-16 16:33 ` Linus Torvalds
2010-11-16 11:49 ` [PATCH -v4 0/2] Lockless memory allocator and list Peter Zijlstra
2010-11-16 16:38 ` Linus Torvalds
2010-11-16 18:04 ` Peter Zijlstra
2010-11-17 1:45 ` Huang Ying
2010-11-17 1:03 ` Huang Ying
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