netdev - Re: [PATCH RFC 0/6] r8169: disable ASPM during NAPI poll

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Date:   Sat, 4 Mar 2023 12:45:19 +0100
From:   Holger Hoffstätte <holger@...lied-asynchrony.com>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Realtek linux nic maintainers <nic_swsd@...ltek.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH RFC 0/6] r8169: disable ASPM during NAPI poll

On 2023-02-25 22:43, Heiner Kallweit wrote:
> This is a rework of ideas from Kai-Heng on how to avoid the known
> ASPM issues whilst still allowing for a maximum of ASPM-related power
> savings. As a prerequisite some locking is added first.
> 
> This change affects a bigger number of supported chip versions,
> therefore this series comes as RFC first for further testing.
> 
> Heiner Kallweit (6):
>    r8169: use spinlock to protect mac ocp register access
>    r8169: use spinlock to protect access to registers Config2 and Config5
>    r8169: enable cfg9346 config register access in atomic context
>    r8169: prepare rtl_hw_aspm_clkreq_enable for usage in atomic context
>    r8169: disable ASPM during NAPI poll
>    r8169: remove ASPM restrictions now that ASPM is disabled during NAPI
>      poll
> 
>   drivers/net/ethernet/realtek/r8169_main.c | 145 +++++++++++++++-------
>   1 file changed, 100 insertions(+), 45 deletions(-)
> 

I've been running this 24/7 for a few days now without any problems, so for
the whole series:

Tested-by: Holger Hoffstätte <holger@...lied-asynchrony.com>

Thanks!
Holger