linux-kernel - Re: m68k: [v5] Convert to genirq (WIP)

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Message-ID: <CAMuHMdVG+GM5c0Wmpa-sAYL+pY1Oz7SynEqmpE1vJWY6j4rXvg@mail.gmail.com>
Date:	Mon, 29 Aug 2011 09:36:32 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	"Linux/m68k" <linux-m68k@...r.kernel.org>,
	linux-kernel@...r.kernel.org,
	Finn Thain <fthain@...egraphics.com.au>
Subject: Re: m68k: [v5] Convert to genirq (WIP)

On Sun, Aug 28, 2011 at 09:53, Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> On Sun, Aug 28, 2011 at 04:08, Finn Thain <fthain@...egraphics.com.au> wrote:
>> On one VIA-based machine that I tested, !CONFIG_USE_GENERIC_HARDIRQS
>> gives:
>>
>> # cat /proc/interrupts
>> auto       1:       2299 via1
>> auto       2:       3876 via2
>> auto       4:        562 SCC
>> auto       7:          0 NMI
>> mac       10:        590 pmu-shift
>> mac       12:         90 pmu-clock
>> mac       14:       1635 timer
>> mac       17:       3876 nubus
>> mac       56:       3879 sonic
>>
>> whereas, CONFIG_USE_GENERIC_HARDIRQS=y gives:
>>
>> # cat /proc/interrupts
>>           CPU0
>>  4:       5303      auto  SCC
>>  7:          0      auto  NMI
>>  10:       2136       mac  pmu-shift
>>  12:        607       mac  pmu-clock
>>  14:      41858       mac  timer
>>  56:      66876       mac  sonic
>> ERR:          0
>>
>> Are there no counters for chained IRQs?
>
> I noticed the same for Amiga.

Thomas, is it intentional that chain handlers don't show counters?
What if we get unexpected interrupts the chain handler can't handle?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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