From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, Ming Lei <ming.lei@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, Hannes Reinecke <hare@suse.com>,
Keith Busch <keith.busch@intel.com>,
Sagi Grimberg <sagi@grimberg.me>
Subject: [PATCH 0/4] irq: fix support for allocating sets of IRQs
Date: Fri, 2 Nov 2018 22:59:47 +0800 [thread overview]
Message-ID: <20181102145951.31979-1-ming.lei@redhat.com> (raw)
Hi Jens,
As I mentioned, there are at least two issues in the patch of '
irq: add support for allocating (and affinitizing) sets of IRQs':
1) it is wrong to pass 'mask + usedvec' to irq_build_affinity_masks()
2) we should spread all possible CPUs in 2-stage way on each set of IRQs
The fix isn't trivial, and I introduce two extra patches as preparation,
then the implementation can be more clean.
The patchset is against mq-maps branch of block tree, feel free to
integrate into the whole patchset of multiple queue maps.
Thanks,
Ming
Jens Axboe (1):
irq: add support for allocating (and affinitizing) sets of IRQs
Ming Lei (3):
Revert "irq: add support for allocating (and affinitizing) sets of
IRQs"
irq: move 2-stage irq spread into one helper
irq: pass first vector to __irq_build_affinity_masks
kernel/irq/affinity.c | 119 +++++++++++++++++++++++++++++++-------------------
1 file changed, 75 insertions(+), 44 deletions(-)
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
--
2.9.5
next reply other threads:[~2018-11-02 15:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-02 14:59 Ming Lei [this message]
2018-11-02 14:59 ` [PATCH 2/4] irq: move 2-stage irq spread into one helper Ming Lei
2018-11-05 11:22 ` [tip:irq/core] genirq/affinity: Move two stage affinity spreading into a helper function tip-bot for Ming Lei
2018-11-02 14:59 ` [PATCH 3/4] irq: pass first vector to __irq_build_affinity_masks Ming Lei
2018-11-05 11:23 ` [tip:irq/core] genirq/affinity: Pass first vector to __irq_build_affinity_masks() tip-bot for Ming Lei
2018-11-02 14:59 ` [PATCH 4/4] irq: add support for allocating (and affinitizing) sets of IRQs Ming Lei
2018-11-05 11:23 ` [tip:irq/core] genirq/affinity: Add support for allocating interrupt sets tip-bot for Jens Axboe
2018-11-03 21:21 ` [PATCH 0/4] irq: fix support for allocating sets of IRQs Jens Axboe
2018-11-04 12:02 ` Thomas Gleixner
2018-11-04 17:24 ` Jens Axboe
2018-11-04 18:39 ` Thomas Gleixner
2018-11-05 11:24 ` Thomas Gleixner
2018-11-06 3:02 ` Jens Axboe
2018-11-05 2:18 ` Ming Lei
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