From: Jason Gunthorpe <jgg@nvidia.com>
To: Sean Hefty <shefty@nvidia.com>
Cc: Michael Margolin <mrgolin@amazon.com>,
"leon@kernel.org" <leon@kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"sleybo@amazon.com" <sleybo@amazon.com>,
"matua@amazon.com" <matua@amazon.com>,
"gal.pressman@linux.dev" <gal.pressman@linux.dev>,
Yonatan Nachum <ynachum@amazon.com>
Subject: Re: [PATCH for-next 1/4] RDMA/core: Add Completion Counters support
Date: Thu, 9 Apr 2026 15:55:37 -0300 [thread overview]
Message-ID: <20260409185537.GQ3357077@nvidia.com> (raw)
In-Reply-To: <CH8PR12MB97416FB899448DE69BF3082EBD582@CH8PR12MB9741.namprd12.prod.outlook.com>
On Thu, Apr 09, 2026 at 05:29:28PM +0000, Sean Hefty wrote:
> I view this as an implementation option. One vendor may implement
> independent counters, which software can then piece together.
> However, another implementation may have a tight coupling.
Well, this is a problematic state to end up in when deciding the OS
and library abstraction. If we don't have joined counters then we
can't really support implementations that have tight coupling
But if we never see an implementation like that then we wasted our
efforts making them combined.
It seems like if portals and libfabric defined them as joined together
then we probably better support it that way too as someone probably
made HW like that.
Jason
next prev parent reply other threads:[~2026-04-09 18:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 11:54 [PATCH for-next 0/4] Introduce Completion Counters Michael Margolin
2026-04-07 11:54 ` [PATCH for-next 1/4] RDMA/core: Add Completion Counters support Michael Margolin
2026-04-07 14:17 ` Jason Gunthorpe
2026-04-09 16:00 ` Michael Margolin
2026-04-09 16:13 ` Jason Gunthorpe
2026-04-09 17:29 ` Sean Hefty
2026-04-09 18:55 ` Jason Gunthorpe [this message]
2026-04-09 19:15 ` Sean Hefty
2026-04-09 19:44 ` Jason Gunthorpe
2026-04-09 22:23 ` Sean Hefty
2026-04-09 18:36 ` Michael Margolin
2026-04-07 11:54 ` [PATCH for-next 2/4] RDMA/core: Add Completion Counters to resource tracking Michael Margolin
2026-04-07 11:54 ` [PATCH for-next 3/4] RDMA/efa: Update device interface Michael Margolin
2026-04-07 11:54 ` [PATCH for-next 4/4] RDMA/efa: Add Completion Counters support Michael Margolin
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