From: "Steve Wise" <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
To: 'Yishai Hadas' <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
majd-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
talal-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org
Subject: RE: [PATCH V5 libibverbs 0/7] Completion timestamping
Date: Wed, 1 Jun 2016 10:49:41 -0500 [thread overview]
Message-ID: <006901d1bc1d$35c63270$a1529750$@opengridcomputing.com> (raw)
In-Reply-To: <1464786340-7630-1-git-send-email-yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
<snip>
>
> The batching API is thread-safe (assuming the CQ wasn't created with
> SINGLE_THREADED attribute) and represents a series of completions the user
> would like to poll one after another. The vendor user space driver should
> guarantee this.
>
Hey Yishai,
Can you please explain how multiple threads can use this API concurrently? I
don't understand how two threads can be in the middle of the next branch
concurrently? Is only one thread allowed in at a time for a
start/next/next/.../end branch?
Thanks,
Steve.
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next prev parent reply other threads:[~2016-06-01 15:49 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-01 13:05 [PATCH V5 libibverbs 0/7] Completion timestamping Yishai Hadas
[not found] ` <1464786340-7630-1-git-send-email-yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-06-01 13:05 ` [PATCH V5 libibverbs 1/7] Add support for extended creating CQ verb Yishai Hadas
2016-06-01 13:05 ` [PATCH V5 libibverbs 2/7] Add member functions to poll an extended CQ Yishai Hadas
2016-06-01 13:05 ` [PATCH V5 libibverbs 3/7] Add timestamp_mask and hca_core_clock to ibv_query_device_ex Yishai Hadas
2016-06-01 13:05 ` [PATCH V5 libibverbs 4/7] Add completion timestamp to poll_cq Yishai Hadas
2016-06-01 13:05 ` [PATCH V5 libibverbs 5/7] Create a single threaded CQ Yishai Hadas
2016-06-01 13:05 ` [PATCH V5 libibverbs 6/7] Add a verb that queries real time values from the HCA Yishai Hadas
2016-06-01 13:05 ` [PATCH V5 libibverbs 7/7] Add timestamp support in rc_pingpong Yishai Hadas
2016-06-01 15:49 ` Steve Wise [this message]
2016-06-01 16:07 ` [PATCH V5 libibverbs 0/7] Completion timestamping Yishai Hadas
[not found] ` <bc75ca98-5d67-a86b-5c65-2bb94ccf6063-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2016-06-01 16:18 ` Steve Wise
2016-06-06 23:02 ` Doug Ledford
[not found] ` <1b0ea11b-3762-2335-28dd-eb3ac243104e-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-06-06 23:33 ` Jason Gunthorpe
[not found] ` <20160606233325.GA28769-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-06-07 2:20 ` Doug Ledford
[not found] ` <bd0b54e6-70ae-27b3-fe1e-8ee729e20479-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-06-07 11:26 ` Yishai Hadas
2016-06-08 19:14 ` Jason Gunthorpe
[not found] ` <20160608191412.GA27089-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-06-09 1:35 ` Doug Ledford
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