From: Simon Horman <horms@kernel.org>
To: Antoine Tenart <atenart@kernel.org>
Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
edumazet@google.com, netdev@vger.kernel.org
Subject: Re: [PATCH net-next 3/3] net: sysctl: allow dump_cpumask to handle higher numbers of CPUs
Date: Fri, 18 Oct 2024 15:04:15 +0100 [thread overview]
Message-ID: <20241018140415.GL1697@kernel.org> (raw)
In-Reply-To: <20241017152422.487406-4-atenart@kernel.org>
On Thu, Oct 17, 2024 at 05:24:19PM +0200, Antoine Tenart wrote:
> This fixes the output of rps_default_mask and flow_limit_cpu_bitmap when
> the CPU count is > 448, as it was truncated.
>
> The underlying values are actually stored correctly when writing to
> these sysctl but displaying them uses a fixed length temporary buffer in
> dump_cpumask. This buffer can be too small if the CPU count is > 448.
>
> Fix this by dynamically allocating the buffer in dump_cpumask, using a
> guesstimate of what we need.
>
> Signed-off-by: Antoine Tenart <atenart@kernel.org>
+1 for using 'nibbles' in a comment in this patch.
Reviewed-by: Simon Horman <horms@kernel.org>
next prev parent reply other threads:[~2024-10-18 14:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-17 15:24 [PATCH net-next 0/3] net: sysctl: allow dump_cpumask to handle higher numbers of CPUs Antoine Tenart
2024-10-17 15:24 ` [PATCH net-next 1/3] net: sysctl: remove always-true condition Antoine Tenart
2024-10-18 14:05 ` Simon Horman
2024-10-17 15:24 ` [PATCH net-next 2/3] net: sysctl: do not reserve an extra char in dump_cpumask temporary buffer Antoine Tenart
2024-10-17 15:24 ` [PATCH net-next 3/3] net: sysctl: allow dump_cpumask to handle higher numbers of CPUs Antoine Tenart
2024-10-18 14:04 ` Simon Horman [this message]
2024-10-18 14:05 ` Simon Horman
2024-10-23 8:40 ` [PATCH net-next 0/3] " patchwork-bot+netdevbpf
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