From: leonro@mellanox.com (Leon Romanovsky)
Subject: [PATCH v4, under testing] nvme-rdma: support devices with queue size < 32
Date: Wed, 3 May 2017 19:27:08 +0300 [thread overview]
Message-ID: <20170503162708.GO22833@mtr-leonro.local> (raw)
In-Reply-To: <77ada146-67eb-9dce-d252-6ac630c9a1e8@grimberg.me>
On Wed, May 03, 2017@07:01:14PM +0300, Sagi Grimberg wrote:
>
> > Hello Jason,
> >
> > As far as I know the compiler only does that for compile-time constants. In
> > this case the divisor (max(queue_size / 2, 1)) is not a compile-time constant.
>
> We could theoretically do a (sig_count & max(queue_size / 2, 1)) but
> that would only do well with power of 2 sized queues...
IMHO, It is not-so-big-deal limitation.
> --
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next prev parent reply other threads:[~2017-05-03 16:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-03 10:05 [PATCH v4, under testing] nvme-rdma: support devices with queue size < 32 Marta Rybczynska
2017-05-03 11:17 ` Leon Romanovsky
2017-05-03 15:08 ` Sagi Grimberg
2017-05-03 15:19 ` Marta Rybczynska
2017-05-03 15:45 ` Bart Van Assche
2017-05-03 15:53 ` Jason Gunthorpe
2017-05-03 15:58 ` Bart Van Assche
2017-05-03 16:01 ` Sagi Grimberg
2017-05-03 16:27 ` Leon Romanovsky [this message]
2017-05-03 16:37 ` Bart Van Assche
2017-05-03 16:49 ` Sagi Grimberg
2017-05-04 12:50 ` Marta Rybczynska
2017-05-17 9:02 ` Christoph Hellwig
2017-05-17 12:50 ` Marta Rybczynska
2017-05-03 16:17 ` Doug Ledford
2017-05-03 16:24 ` Bart Van Assche
2017-05-03 19:07 ` Doug Ledford
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