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| Started by | Will Deacon <will.deacon@arm.com> |
|---|---|
| First post | 2015-09-22 20:40 +0200 |
| Last post | 2015-09-22 20:40 +0200 |
| Articles | 1 — 1 participant |
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Re: [RFC PATCH v5 0/4] arm/arm64: fix a migrating irq bug when hotplug cpu Will Deacon <will.deacon@arm.com> - 2015-09-22 20:40 +0200
| From | Will Deacon <will.deacon@arm.com> |
|---|---|
| Date | 2015-09-22 20:40 +0200 |
| Subject | Re: [RFC PATCH v5 0/4] arm/arm64: fix a migrating irq bug when hotplug cpu |
| Message-ID | <qbADV-561-67@gated-at.bofh.it> |
On Sat, Sep 19, 2015 at 04:05:55AM +0100, Yang Yingliang wrote: > ---- > Changes in v5: > - remove the macro that guard move_irqs() > - use name irq_migrate_all_off_this_cpu instead of move_irqs > > Changes in v4: > - select GENERIC_IRQ_MIGRATION when config GENERIC_IRQ_MIGRATION is enabled > - add move_irqs() into kerne/irq/migration.c for cpu hotplug > - use move_irqs() to migrate interrupts on arm/arm64 when cpu is going to down > - split bugfix patch into seperate patches for arm and arm64 > > Changes in v3: > - introduce config GENERIC_IRQ_MIGRATION for compiling migration.c > - rename migrate_irqs in arch/ia64/kernel/irq.c to avoid compiling error > > Changes in v2: > - use the exiting helper to set IRQD_MOVE_PCNTXT flag > - use for_each_active_irq() instead of for_each_irq_desc() > - add some warn messages when affinity is null or do set affinity failed > ---- > > Hi All, > > There is a bug: > > When cpu is disabled, all irqs will be migratged to another cpu. > In some cases, a new affinity is different, it needed to be coppied > to irq's affinity. But if the type of irq is LPI, it's affinity will > not be coppied because of irq_set_affinity's return value. This series looks good to me: Reviewed-by: Will Deacon <will.deacon@arm.com> Marc: once you're happy with the irq/core changes, feel free to include the arm64 patch in your tree. Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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