netdev - Re: TX on r8169 causes latency and messes up real-time apps, on some boards

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Message-ID: <20090817051926.GA10370@electric-eye.fr.zoreil.com>
Date:	Mon, 17 Aug 2009 07:19:26 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Andrew Lutomirski <luto@....edu>
Cc:	netdev@...r.kernel.org
Subject: Re: TX on r8169 causes latency and messes up real-time apps, on
	some boards

Andrew Lutomirski <luto@....edu> :
[...]
> @@ -125,6 +125,11 @@
>  ACPI: No dock devices found.
>  ACPI: PCI Root Bridge [PCI0] (0000:00)
>  pci 0000:00:00.0: reg 10 32bit mmio: [0x48000000-0x49ffffff]
> +pci 0000:00:02.7: reg 10 io port: [0x2200-0x22ff]
> +pci 0000:00:02.7: reg 14 io port: [0x2300-0x237f]
> +pci 0000:00:02.7: supports D1 D2
> +pci 0000:00:02.7: PME# supported from D3hot D3cold
> +pci 0000:00:02.7: PME# disabled
[...]
> @@ -157,34 +162,34 @@
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
>  ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1._PRT]
>  ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 *10 11 12 14 15)
> -ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 7 10 *11 12 14 15)
> -ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 10 11 12 14 15) *0, disabled.
> -ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 *10 11 12 14 15)
> +ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 7 *10 11 12 14 15)
> +ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 10 *11 12 14 15)
> +ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 10 *11 12 14 15)

There is some difference. Either the kernel, the board or the bios
revision. I'd be surprized if the /proc/interrupts looked the same.

-- 
Ueimor
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