From cf74eb5a5bc867258e7d0b0d1c3c4a60e1e3de2f Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Mon, 14 Aug 2023 08:35:21 -0700 Subject: [PATCH] eth: r8152: try to use a normal budget Mario reports that loading r8152 on his system leads to a: netif_napi_add_weight() called with weight 256 warning getting printed. We don't have any solid data on why such high budget was chosen, and it may cause stalls in processing other softirqs and rt threads. So try to switch back to the default (64) weight. If this slows down someone's system we should investigate which part of stopping starting the NAPI poll in this driver are expensive. Reported-by: Mario Limonciello Link: https://lore.kernel.org/all/0bfd445a-81f7-f702-08b0-bd5a72095e49@amd.com/ Acked-by: Hayes Wang Link: https://lore.kernel.org/r/20230814153521.2697982-1-kuba@kernel.org Signed-off-by: Jakub Kicinski --- drivers/net/usb/r8152.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -9784,8 +9784,7 @@ static int rtl8152_probe(struct usb_inte usb_set_intfdata(intf, tp); - netif_napi_add_weight(netdev, &tp->napi, r8152_poll, - tp->support_2500full ? 256 : 64); + netif_napi_add(netdev, &tp->napi, r8152_poll); ret = register_netdev(netdev); if (ret != 0) {