From: ebiederm@xmission.com (Eric W. Biederman)
To: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Rusty Russell <rusty@rustcorp.com.au>,
Suresh Siddha <suresh.b.siddha@intel.com>,
linux-kernel@vger.kernel.org,
Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [PATCH 2/3] x86: use vector_desc instead of vector_irq
Date: Thu, 18 Feb 2010 09:22:45 -0800 [thread overview]
Message-ID: <m1mxz6v4pm.fsf@fess.ebiederm.org> (raw)
In-Reply-To: <4B7CAADD.2060000@kernel.org> (Yinghai Lu's message of "Wed\, 17 Feb 2010 18\:50\:05 -0800")
Yinghai Lu <yinghai@kernel.org> writes:
> Eric pointed out that radix tree version of irq_to_desc will magnify delay on the path
> of handle_irq.
> use vector_desc to reduce the calling of irq_to_desc.
>
> next step: need to change all ack, mask, umask, eoi for all irq_chip to take irq_desc
>
> -v2: irq should be unsigned in 32bit handle_irq according to Eric
> also reset vector_desc for lguest in setup_irq
> -v3: keep irq in x+execute_on_irq_stack() ...
>
> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
I can't spot any more problems.
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
next prev parent reply other threads:[~2010-02-18 17:23 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-13 2:49 [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up Yinghai Lu
2010-02-13 2:49 ` [PATCH 1/8] irq: remove not need bootmem code Yinghai Lu
2010-02-13 2:49 ` [PATCH 2/8] radix: move radix init early Yinghai Lu
2010-02-13 2:49 ` [PATCH 3/8] sparseirq: change irq_desc_ptrs to static Yinghai Lu
2010-02-13 2:49 ` [PATCH 4/8] sparseirq: use radix_tree instead of ptrs array Yinghai Lu
2010-02-13 2:49 ` [PATCH 5/8] x86: remove arch_probe_nr_irqs Yinghai Lu
2010-02-13 2:49 ` [PATCH 6/8] use nr_cpus= to set nr_cpu_ids early Yinghai Lu
2010-02-13 2:49 ` [PATCH 7/8] x86: use num_processors for possible cpus Yinghai Lu
2010-02-13 2:49 ` [PATCH 8/8] x86: make 32bit apic flat to physflat switch like 64bit Yinghai Lu
2010-02-13 3:44 ` [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up Eric W. Biederman
2010-02-13 3:49 ` H. Peter Anvin
2010-02-13 4:17 ` Eric W. Biederman
2010-02-13 22:12 ` Jeremy Fitzhardinge
2010-02-13 22:26 ` Eric W. Biederman
2010-02-13 9:54 ` Yinghai Lu
2010-02-13 11:39 ` Eric W. Biederman
2010-02-13 12:04 ` Eric W. Biederman
2010-02-13 22:40 ` Yinghai Lu
2010-02-13 23:14 ` Eric W. Biederman
2010-02-13 23:59 ` Yinghai Lu
2010-02-14 0:30 ` Eric W. Biederman
2010-02-14 0:49 ` Yinghai Lu
[not found] ` <4B7CA9A1.3020806@kernel.org>
2010-02-18 2:49 ` [PATCH 0/3] radix tree spareirq addon cleanup Yinghai Lu
2010-02-18 2:50 ` [PATCH 2/3] x86: use vector_desc instead of vector_irq Yinghai Lu
2010-02-18 17:22 ` Eric W. Biederman [this message]
2010-02-23 6:39 ` [PATCH -v3 1/2] " Yinghai Lu
2010-02-23 6:44 ` [PATCH -v2 2/2] genericirq: change ack/mask in irq_chip to take irq_desc instead of irq Yinghai Lu
2010-02-24 21:36 ` Eric W. Biederman
2010-02-24 22:07 ` Yinghai Lu
2010-02-25 0:22 ` Stephen Rothwell
2010-03-02 14:58 ` Thomas Gleixner
2010-03-03 8:49 ` Yinghai Lu
2010-03-03 10:26 ` Thomas Gleixner
[not found] ` <4B84F013.9040708@kernel.org>
2010-02-24 9:26 ` [PATCH -v3 " Yinghai Lu
2010-02-24 9:27 ` [PATCH -v4 1/2] x86: use vector_desc instead of vector_irq Yinghai Lu
2010-02-18 2:50 ` [RFC PATCH 3/3] genericirq: change ack/mask in irq_chip to take irq_desc in addition to irq Yinghai Lu
2010-02-18 17:04 ` Eric W. Biederman
2010-02-18 17:13 ` H. Peter Anvin
2010-02-18 19:51 ` Yinghai Lu
2010-02-18 2:49 ` [PATCH 1/3] xen: Remove unnecessary arch specific xen irq functions Yinghai Lu
2010-02-19 1:36 ` [tip:x86/irq] " tip-bot for Eric W. Biederman
2010-02-13 12:26 ` [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up Eric W. Biederman
2010-02-13 22:36 ` Yinghai Lu
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