From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: "Matan Barak (External)"
<matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH V4 libibverbs 2/7] Add member functions to poll an extended CQ
Date: Mon, 30 May 2016 11:05:01 -0600 [thread overview]
Message-ID: <20160530170501.GA17321@obsidianresearch.com> (raw)
In-Reply-To: <ecdbec76-31cd-74e1-25b4-7d60c3fa2af0-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
On Mon, May 30, 2016 at 06:01:24PM +0300, Matan Barak (External) wrote:
> So, you suggest that "simple" attributes will take into account byte_offset,
> bit_offset, bits_size (or mask) and endianity. While the right endianity
> conversion function will be chosen by inspecting the bits_size?
> Of course, this is in addition to the attribute's nature (simple/possible
> simple/complex), which we need to condition on that too.
> This doesn't sound simple for me and I'm afraid it will affect performance
> more than just a real simple function call.
Right, that is exactly the point - if the inlined version requires a
branch to choose betwen simple/complex then it will be about the same
cost to just branch to the correct code in the driver.
Jason
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next prev parent reply other threads:[~2016-05-30 17:05 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-29 14:51 [PATCH V4 libibverbs 0/7] Completion timestamping Yishai Hadas
[not found] ` <1464533475-18949-1-git-send-email-yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-05-29 14:51 ` [PATCH V4 libibverbs 1/7] Add support for extended creating CQ verb Yishai Hadas
2016-05-29 14:51 ` [PATCH V4 libibverbs 2/7] Add member functions to poll an extended CQ Yishai Hadas
[not found] ` <1464533475-18949-3-git-send-email-yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-05-29 22:38 ` Doug Ledford
[not found] ` <574B6F71.9060808-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-05-29 23:30 ` Jason Gunthorpe
[not found] ` <20160529233009.GA12420-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-05-29 23:47 ` Doug Ledford
[not found] ` <8F7BC9E2-75EC-413B-BEBE-11450225AF06-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-05-30 1:35 ` Jason Gunthorpe
[not found] ` <20160530013507.GA19230-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-05-30 3:39 ` Doug Ledford
2016-05-31 17:46 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373AB05CA6D-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2016-05-31 18:06 ` Jason Gunthorpe
[not found] ` <20160531180608.GA21834-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-05-31 19:48 ` Hefty, Sean
2016-05-30 7:47 ` Matan Barak
[not found] ` <4958edf4-7296-26c9-4cbe-8fab45be11a3-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-05-30 10:01 ` Yishai Hadas
[not found] ` <4e8befc4-aec5-a17d-24ce-40ff97d345da@redhat.com>
[not found] ` <4e8befc4-aec5-a17d-24ce-40ff97d345da-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-05-30 13:50 ` Doug Ledford
[not found] ` <8708a378-4c48-df98-86a4-d210bbe690b5-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-05-30 15:01 ` Matan Barak (External)
[not found] ` <ecdbec76-31cd-74e1-25b4-7d60c3fa2af0-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-05-30 17:05 ` Jason Gunthorpe [this message]
2016-05-29 14:51 ` [PATCH V4 libibverbs 3/7] Add timestamp_mask and hca_core_clock to ibv_query_device_ex Yishai Hadas
2016-05-29 14:51 ` [PATCH V4 libibverbs 4/7] Add completion timestamp to poll_cq Yishai Hadas
2016-05-29 14:51 ` [PATCH V4 libibverbs 5/7] Create a single threaded CQ Yishai Hadas
2016-05-29 14:51 ` [PATCH V4 libibverbs 6/7] Add a verb that queries real time values from the HCA Yishai Hadas
2016-05-29 14:51 ` [PATCH V4 libibverbs 7/7] Add timestamp support in rc_pingpong Yishai Hadas
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