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From: Suresh Siddha <suresh.b.siddha@intel.com>
To: Alexander Gordeev <agordeev@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>,
	yinghai@kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org,
	gorcunov@openvz.org
Subject: Re: [PATCH 1/2] x86, apic: optimize cpu traversal in __assign_irq_vector() using domain membership
Date: Thu, 21 Jun 2012 14:53:18 -0700	[thread overview]
Message-ID: <1340315598.3696.89.camel@sbsiddha-desk.sc.intel.com> (raw)
In-Reply-To: <20120621083146.GC2223@dhcp-26-207.brq.redhat.com>

On Thu, 2012-06-21 at 10:31 +0200, Alexander Gordeev wrote:
> On Tue, Jun 19, 2012 at 04:43:30PM -0700, Suresh Siddha wrote:
> > Use the irq_cfg's old_domain to track the visited domains and optimize
> > the cpu traversal while finding a free vector in the given cpumask.
> > 
> > NOTE: We can also optimize the search by using for_each_cpu and skip the
> > current cpu, if it is not the first cpu in the mask returned by the
> > vector_allocation_domain(). But re-using the cfg->old_domain to track
> > the visited domains will be slightly faster.
> 
> Sorry for the dealy, Suresh.
> 
> You also need to kick out vector_allocation_domain's return value in all other
> apic drivers.

this patch is on top of -tip which already has your patch which
consolidates different vector_allocation_domains to relatively few. I
double checked and don't seem to left out any other apic driver.

thanks,
suresh



  reply	other threads:[~2012-06-21 21:52 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-18 10:26 [PATCH 2/3] x86: x2apic/cluster: Make use of lowest priority delivery mode Alexander Gordeev
2012-05-18 14:41 ` Cyrill Gorcunov
2012-05-18 15:42   ` Alexander Gordeev
2012-05-18 15:51     ` Cyrill Gorcunov
2012-05-19 10:47       ` Cyrill Gorcunov
2012-05-21  7:11         ` Alexander Gordeev
2012-05-21  9:46           ` Cyrill Gorcunov
2012-05-19 20:53 ` Yinghai Lu
2012-05-21  8:13   ` Alexander Gordeev
2012-05-21 23:02     ` Yinghai Lu
2012-05-21 23:33       ` Yinghai Lu
2012-05-22  9:36         ` Alexander Gordeev
2012-05-21 23:44     ` Suresh Siddha
2012-05-21 23:58       ` [PATCH 1/2] x86, irq: update irq_cfg domain unless the new affinity is a subset of the current domain Suresh Siddha
2012-05-21 23:58         ` [PATCH 2/2] x2apic, cluster: use all the members of one cluster specified in the smp_affinity mask for the interrupt desintation Suresh Siddha
2012-05-22  7:04           ` Ingo Molnar
2012-05-22  7:34             ` Cyrill Gorcunov
2012-05-22 17:21             ` Suresh Siddha
2012-05-22 17:39               ` Cyrill Gorcunov
2012-05-22 17:42                 ` Suresh Siddha
2012-05-22 17:45                   ` Cyrill Gorcunov
2012-05-22 20:03           ` Yinghai Lu
2012-06-06 15:04           ` [tip:x86/apic] x86/x2apic/cluster: Use all the members of one cluster specified in the smp_affinity mask for the interrupt destination tip-bot for Suresh Siddha
2012-06-06 22:21             ` Yinghai Lu
2012-06-06 23:14               ` Suresh Siddha
2012-06-06 15:03         ` [tip:x86/apic] x86/irq: Update irq_cfg domain unless the new affinity is a subset of the current domain tip-bot for Suresh Siddha
2012-08-07 15:31           ` Robert Richter
2012-08-07 15:41             ` do_IRQ: 1.55 No irq handler for vector (irq -1) Borislav Petkov
2012-08-07 16:24               ` Suresh Siddha
2012-08-07 17:28                 ` Robert Richter
2012-08-07 17:47                   ` Suresh Siddha
2012-08-07 17:45                 ` Eric W. Biederman
2012-08-07 20:57                   ` Borislav Petkov
2012-08-07 22:39                     ` Suresh Siddha
2012-08-08  8:58                       ` Robert Richter
2012-08-08 11:04                         ` Borislav Petkov
2012-08-08 19:16                           ` Suresh Siddha
2012-08-14 17:02                             ` [tip:x86/urgent] x86, apic: fix broken legacy interrupts in the logical apic mode tip-bot for Suresh Siddha
2012-06-06 17:20         ` [PATCH 1/2] x86, irq: update irq_cfg domain unless the new affinity is a subset of the current domain Alexander Gordeev
2012-06-06 23:02           ` Suresh Siddha
2012-06-16  0:25           ` Suresh Siddha
2012-06-18  9:17             ` Alexander Gordeev
2012-06-19  0:51               ` Suresh Siddha
2012-06-19 23:43                 ` [PATCH 1/2] x86, apic: optimize cpu traversal in __assign_irq_vector() using domain membership Suresh Siddha
2012-06-19 23:43                   ` [PATCH 2/2] x86, x2apic: limit the vector reservation to the user specified mask Suresh Siddha
2012-06-20  5:56                     ` Yinghai Lu
2012-06-21  9:04                     ` Alexander Gordeev
2012-06-21 21:51                       ` Suresh Siddha
2012-06-20  5:53                   ` [PATCH 1/2] x86, apic: optimize cpu traversal in __assign_irq_vector() using domain membership Yinghai Lu
2012-06-21  8:31                   ` Alexander Gordeev
2012-06-21 21:53                     ` Suresh Siddha [this message]
2012-06-20  0:18               ` [PATCH 1/2] x86, irq: update irq_cfg domain unless the new affinity is a subset of the current domain Suresh Siddha
2012-06-21 11:00                 ` Alexander Gordeev
2012-06-21 21:58                   ` Suresh Siddha
2012-05-22 10:12       ` [PATCH 2/3] x86: x2apic/cluster: Make use of lowest priority delivery mode Alexander Gordeev
2012-05-21  8:22 ` Ingo Molnar
2012-05-21  9:36   ` Alexander Gordeev
2012-05-21 12:40     ` Ingo Molnar
2012-05-21 14:48       ` Alexander Gordeev
2012-05-21 14:59         ` Ingo Molnar
2012-05-21 15:22           ` Alexander Gordeev
2012-05-21 15:34           ` Cyrill Gorcunov
2012-05-21 15:36           ` Linus Torvalds
2012-05-21 18:07             ` Suresh Siddha
2012-05-21 18:18               ` Linus Torvalds
2012-05-21 18:37                 ` Suresh Siddha
2012-05-21 19:30                   ` Ingo Molnar
2012-05-21 19:15             ` Ingo Molnar
2012-05-21 19:56               ` Suresh Siddha

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