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Date: Tue, 13 Oct 2015 20:28:24 +0100 From: Russell King - ARM Linux <linux@....linux.org.uk> To: Yang Yingliang <yangyingliang@...wei.com> Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Jiang Liu <jiang.liu@...ux.intel.com>, Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <marc.zyngier@....com>, Mark Rutland <mark.rutland@....com>, Will Deacon <will.deacon@....com>, Hanjun Guo <hanjun.guo@...aro.org> Subject: Re: [RFC PATCH v6 3/3] arm: fix a migrating irq bug when hotplug cpu On Thu, Sep 24, 2015 at 05:32:15PM +0800, Yang Yingliang wrote: > When cpu is disabled, all irqs will be migratged to another cpu. > In some cases, a new affinity is different, the old affinity need > to be updated and if irq_set_affinity's return value is IRQ_SET_MASK_OK_DONE, > the old affinity can not be updated. Fix it by using irq_do_set_affinity. > > And migrating interrupts is a core code matter, so use the generic > function irq_migrate_all_off_this_cpu() to migrate interrupts in > kernel/irq/migration.c. Please can you put this patch in the patch system so I don't forget it (it's taken tglx prompting and quite a long time to find this in my mailbox already.) See http:/www.arm.linux.org.uk/developer/patches/ Thanks. -- FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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