From: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
To: Kumar Sanghvi <kumaras-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org>
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
roland-BHEL68pLQRGGvPXPguhicg@public.gmane.org,
divy-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org,
Parav.Pandit-iH1Dq9VlAzfQT0dZR+AlfA@public.gmane.org
Subject: Re: [PATCH 2/2] RDMA/cxgb3: Serialize calls to cq's comp_handler by lock
Date: Fri, 28 Oct 2011 08:57:35 -0500 [thread overview]
Message-ID: <4EAAB4CF.5020905@opengridcomputing.com> (raw)
In-Reply-To: <1319471422-30113-2-git-send-email-kumaras-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org>
On 10/24/2011 10:50 AM, Kumar Sanghvi wrote:
> iw_cxgb3 has a potential problem wherein the cq's comp_handler
> can get called simultaneously from different places in iw_cxgb3
> driver. This does not comply with Documentation/infiniband/core_locking.txt,
> which states that at a given point of time, there should be only one
> callback per CQ should be active.
>
> Such problem was reported by Parav Pandit<Parav.Pandit-iH1Dq9VlAzfQT0dZR+AlfA@public.gmane.org> for
> iw_cxgb4 driver. Based on discussion between Parav Pandit and Steve Wise,
> this patch aims to correct above problem by serializing the calls to cq's
> comp_handler using a spin_lock.
>
> Signed-off-by: Kumar Sanghvi<kumaras-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org>
Acked-by: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
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next prev parent reply other threads:[~2011-10-28 13:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-24 15:50 [PATCH 1/2] RDMA/cxgb4: Serialize calls to cq's comp_handler by lock Kumar Sanghvi
[not found] ` <1319471422-30113-1-git-send-email-kumaras-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org>
2011-10-24 15:50 ` [PATCH 2/2] RDMA/cxgb3: " Kumar Sanghvi
[not found] ` <1319471422-30113-2-git-send-email-kumaras-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org>
2011-10-28 13:57 ` Steve Wise [this message]
2011-10-28 13:57 ` [PATCH 1/2] RDMA/cxgb4: " Steve Wise
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