From: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: "ira.weiny" <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
"Dalessandro,
Dennis"
<dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org"
<matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org"
<haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
"dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org"
<dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH rdma-next V2 6/6] RDMA/core: Unify style of IOCTL commands
Date: Thu, 8 Sep 2016 16:48:30 +0300 [thread overview]
Message-ID: <20160908134830.GM18398@leon.nu> (raw)
In-Reply-To: <20160907235508.GB4515-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
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On Wed, Sep 07, 2016 at 07:55:09PM -0400, ira.weiny wrote:
> >
> > 2. In new ABI, you will define your special objects, mark them as a
> > vendor specific and the driver will be called immediately. IMHO, there
> > is no need in special ioctl.
>
> Well I'm still trying to get time to comment on that series. One thing which
> we are a bit worried about are the number of objects which may be tracked by
> for a device and the performance to get to a special driver object (like a PSM
> context). Right now PSM opens a FD and associates a single context with that
> FD so the access of that context is O(1). The addition of special objects and
> looking them up adds overhead which _MAY_ be ok but until we get a chance to
> evaluate better I can't commit that what you say here is true.
Good to know.
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next prev parent reply other threads:[~2016-09-08 13:48 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-23 21:31 [PATCH rdma-next V2 0/6] Refactor RDMA IOCTL declarations Leon Romanovsky
[not found] ` <1471987907-6336-1-git-send-email-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2016-08-23 21:31 ` [PATCH rdma-next V2 1/6] RDMA/core: Commonize RDMA IOCTL declarations location Leon Romanovsky
2016-08-23 21:31 ` [PATCH rdma-next V2 2/6] RDMA/core: Move legacy MAD IOCTL declarations to common file Leon Romanovsky
2016-08-23 21:31 ` [PATCH rdma-next V2 3/6] RDMA/hfi1: Avoid redeclaration error Leon Romanovsky
2016-08-23 21:31 ` [PATCH rdma-next V2 4/6] RDMA/core: Move HFI1 IOCTL declarations to common file Leon Romanovsky
2016-08-23 21:31 ` [PATCH rdma-next V2 5/6] RDMA/core: Rename RDMA magic number Leon Romanovsky
2016-08-23 21:31 ` [PATCH rdma-next V2 6/6] RDMA/core: Unify style of IOCTL commands Leon Romanovsky
[not found] ` <1471987907-6336-7-git-send-email-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2016-09-01 14:05 ` Dalessandro, Dennis
[not found] ` <1472738739.16467.8.camel-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-09-01 16:20 ` Leon Romanovsky
[not found] ` <20160901162043.GD21847-2ukJVAZIZ/Y@public.gmane.org>
2016-09-01 16:54 ` Dalessandro, Dennis
2016-09-01 16:46 ` Jason Gunthorpe
[not found] ` <20160901164624.GC6479-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-09-01 16:55 ` Leon Romanovsky
[not found] ` <20160901165552.GE21847-2ukJVAZIZ/Y@public.gmane.org>
2016-09-01 17:04 ` Dalessandro, Dennis
2016-09-01 17:07 ` Jason Gunthorpe
[not found] ` <20160901170742.GA20098-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-09-01 17:09 ` Dalessandro, Dennis
[not found] ` <1472749767.16467.25.camel-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-09-01 17:11 ` Jason Gunthorpe
[not found] ` <20160901171129.GB19982-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-09-01 17:17 ` Dalessandro, Dennis
[not found] ` <1472750241.16467.29.camel-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-09-01 17:33 ` Jason Gunthorpe
[not found] ` <20160901173320.GB20472-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-09-01 17:52 ` Leon Romanovsky
[not found] ` <20160901175222.GF21847-2ukJVAZIZ/Y@public.gmane.org>
2016-09-06 21:03 ` ira.weiny
[not found] ` <20160906210313.GA24527-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2016-09-06 21:19 ` Jason Gunthorpe
[not found] ` <20160906211959.GA27106-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-09-07 23:06 ` ira.weiny
2016-09-07 5:55 ` Leon Romanovsky
[not found] ` <20160907055519.GT21847-2ukJVAZIZ/Y@public.gmane.org>
2016-09-07 23:55 ` ira.weiny
[not found] ` <20160907235508.GB4515-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2016-09-08 13:48 ` Leon Romanovsky [this message]
2016-09-01 17:02 ` Dalessandro, Dennis
2016-08-23 21:47 ` [PATCH rdma-next V2 0/6] Refactor RDMA IOCTL declarations Jason Gunthorpe
[not found] ` <20160823214759.GA16595-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-08-24 10:14 ` Leon Romanovsky
2016-09-01 11:17 ` Leon Romanovsky
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