From: Jakub Kicinski <kuba@kernel•org>
To: Ahmed Zaki <ahmed.zaki@intel•com>
Cc: netdev@vger•kernel.org, intel-wired-lan@lists•osuosl.org,
andrew+netdev@lunn•ch, edumazet@google•com, pabeni@redhat•com,
davem@davemloft•net, michael.chan@broadcom•com,
tariqt@nvidia•com, anthony.l.nguyen@intel•com,
przemyslaw.kitszel@intel•com, jdamato@fastly•com,
shayd@nvidia•com, akpm@linux-foundation•org
Subject: Re: [PATCH net-next v2 1/8] net: napi: add irq_flags to napi struct
Date: Thu, 19 Dec 2024 19:34:03 -0800 [thread overview]
Message-ID: <20241219193403.10a52305@kernel.org> (raw)
In-Reply-To: <20241218165843.744647-2-ahmed.zaki@intel.com>
On Wed, 18 Dec 2024 09:58:36 -0700 Ahmed Zaki wrote:
> Add irq_flags to the napi struct. This will allow the drivers to choose
> how the core handles the IRQ assigned to the napi via
> netif_napi_set_irq().
I haven't read all the code, but I think the flag should be for the
netdev as a while, not NAPI by NAPI. In fact you can combine it with
allocating the map, too.
int netif_enable_cpu_rmap(dev, num_queues)
{
#ifdef CONFIG_RFS_ACCEL
WARN_ON(dev->rx_cpu_rmap);
dev->rx_cpu_rmap = alloc_irq_cpu_rmap(adapter->num_queues);
if ...
dev->rx_cpu_rmap_auto = 1;
return 0;
#endif
}
void netif_disable_cpu_rmap(dev)
{
dev->rx_cpu_rmap_auto = 0;
free_irq_cpu_rmap(dev->rx_cpu_rmap);
}
Then in the NAPI code you just:
void netif_napi_set_irq(...)
{
...
if (napi->dev->rx_cpu_rmap_auto) {
err = irq_cpu_rmap_add(napi->dev->rx_cpu_rmap, irq);
...
}
}
next prev parent reply other threads:[~2024-12-20 3:34 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-18 16:58 [PATCH net-next v2 0/8] net: napi: add CPU affinity to napi->config Ahmed Zaki
2024-12-18 16:58 ` [PATCH net-next v2 1/8] net: napi: add irq_flags to napi struct Ahmed Zaki
2024-12-20 3:34 ` Jakub Kicinski [this message]
2024-12-20 14:50 ` Ahmed Zaki
2024-12-18 16:58 ` [PATCH net-next v2 2/8] net: allow ARFS rmap management in core Ahmed Zaki
2024-12-18 19:56 ` [Intel-wired-lan] " kernel test robot
2024-12-18 16:58 ` [PATCH net-next v2 3/8] lib: cpu_rmap: allow passing a notifier callback Ahmed Zaki
2024-12-18 16:58 ` [PATCH net-next v2 4/8] net: napi: add CPU affinity to napi->config Ahmed Zaki
2024-12-18 20:16 ` [Intel-wired-lan] " kernel test robot
2024-12-18 20:27 ` kernel test robot
2024-12-20 3:42 ` Jakub Kicinski
2024-12-20 14:51 ` Ahmed Zaki
2024-12-20 17:23 ` Jakub Kicinski
2024-12-20 19:15 ` Ahmed Zaki
2024-12-20 19:37 ` Jakub Kicinski
2024-12-20 20:14 ` Ahmed Zaki
2024-12-20 20:51 ` Jakub Kicinski
2024-12-18 16:58 ` [PATCH net-next v2 5/8] bnxt: use napi's irq affinity Ahmed Zaki
2024-12-18 16:58 ` [PATCH net-next v2 6/8] ice: " Ahmed Zaki
2024-12-18 16:58 ` [PATCH net-next v2 7/8] idpf: " Ahmed Zaki
2024-12-18 16:58 ` [PATCH net-next v2 8/8] mlx4: " Ahmed Zaki
2024-12-22 9:23 ` [PATCH net-next v2 0/8] net: napi: add CPU affinity to napi->config Shay Drori
2025-01-02 21:38 ` Ahmed Zaki
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