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Date: Tue, 4 Aug 2026 14:57:56 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Leon Romanovsky <leon@kernel.org>
Cc: Tariq Toukan <tariqt@nvidia.com>, Andrew Lunn <andrew+netdev@lunn.ch>,
 "David S. Miller" <davem@davemloft.net>, Eric Dumazet
 <edumazet@google.com>, netdev@vger.kernel.org, Paolo Abeni
 <pabeni@redhat.com>, Alex Vesker <valex@nvidia.com>, Christian Borntraeger
 <borntraeger@linux.ibm.com>, Gal Pressman <gal@nvidia.com>, Kalesh AP
 <kalesh-anakkur.purayil@broadcom.com>, Kees Cook <kees@kernel.org>,
 linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Mark Bloch
 <mbloch@nvidia.com>, Saeed Mahameed <saeedm@nvidia.com>, Yevgeny Kliteynik
 <kliteyn@nvidia.com>
Subject: Re: [PATCH net RESEND] net/mlx5: Use unique names for software
 steering caches
Message-ID: <20260804145756.331951b7@kernel.org>
In-Reply-To: <20260804080455.GB326170@unreal>
References: <20260730210200.2590115-1-tariqt@nvidia.com>
	<20260803182614.23f26c91@kernel.org>
	<20260804080455.GB326170@unreal>
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On Tue, 4 Aug 2026 11:04:55 +0300 Leon Romanovsky wrote:
> On Mon, Aug 03, 2026 at 06:26:14PM -0700, Jakub Kicinski wrote:
> > On Fri, 31 Jul 2026 00:02:00 +0300 Tariq Toukan wrote:  
> > > Prefix each cache name with the device name to make it unique.  
> > 
> > Why do we need a per-device kmem_cache?
> > Isn't the right fix to make this driver-level state?  
> 
> This kmem_cache is required only for software managed steering mode, which is
> configured per device by mlx5_fs_mode_set(). In general, resources
> should be allocated only when they are actually needed.

Of course you have to wrap the init in a lock and count users.
Trivial stuff.