Messages in this thread | | | From | Ming Lei <> | Subject | [PATCH 0/4] genirq/nvme: add IRQF_RESCUE_THREAD for avoiding IRQ flood | Date | Tue, 27 Aug 2019 16:53:40 +0800 |
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Hi Guys,
The 1st patch implements one simple EWMA based mechanism for detecting IRQ flood.
The 2nd patch adds IRQF_RESCUE_THREAD, and interrupts will be handled in the created rescue thread in case that IRQ flood comes.
The 3rd patch applies the flag of IRQF_RESCURE_THREAD for NVMe.
The last patch uses irq's affinity in case of IRQF_RESCUE_THREAD.
Please review & comment!
Long, please test and see if your issue can be fixed.
Ming Lei (4): softirq: implement IRQ flood detection mechanism genirq: add IRQF_RESCUE_THREAD nvme: pci: pass IRQF_RESCURE_THREAD to request_threaded_irq genirq: use irq's affinity for threaded irq with IRQF_RESCUE_THREAD
drivers/base/cpu.c | 25 +++++++++++++++++++++ drivers/nvme/host/pci.c | 17 +++++++++++++-- include/linux/hardirq.h | 2 ++ include/linux/interrupt.h | 6 +++++ kernel/irq/handle.c | 6 ++++- kernel/irq/manage.c | 25 ++++++++++++++++++++- kernel/softirq.c | 46 +++++++++++++++++++++++++++++++++++++++ 7 files changed, 123 insertions(+), 4 deletions(-)
Cc: Long Li <longli@microsoft.com> Cc: Ingo Molnar <mingo@redhat.com>, Cc: Peter Zijlstra <peterz@infradead.org> Cc: Keith Busch <keith.busch@intel.com> Cc: Jens Axboe <axboe@fb.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: John Garry <john.garry@huawei.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hannes Reinecke <hare@suse.com> Cc: linux-nvme@lists.infradead.org Cc: linux-scsi@vger.kernel.org
-- 2.20.1
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