LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Thomas Gleixner <tglx@linutronix.de>
To: dwalker@mvista.com
Cc: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: 2.6.20-rc6-mm3
Date: Wed, 07 Feb 2007 00:36:29 +0100	[thread overview]
Message-ID: <1170804989.3785.58.camel@chaos> (raw)
In-Reply-To: <1170804177.3455.109.camel@dwalker1>

On Tue, 2007-02-06 at 15:22 -0800, Daniel  Walker wrote:
> > > What about the statistics for the other interrupts in the system ? It 
> > > clearly doesn't list all interrupts in the system .
> > 
> > what is your point?
> 
> Isn't the listing inconsistent ? /proc/interrupts only showing some
> special interrupts, and not others .. 

It shows _ALL_ used interrupts in the system. There is no point to let
it show NR_IRQ interrupts with a event count = 0.

> For example it shows NMI which is
> not related to request_irq() .. It shows some clock driver devices
> (timer, NMI, LOC) and not others (clock event devices) ..

PIT is a clock event device and uses IRQ0, where the interrupt count is
displayed:

0:    3022812          0   IO-APIC-edge      timer

Local APIC timer is a clock event device too and the interrupt count is
displayed as well:

LOC:     177795    1755941 

There are no other clock event devices in a PC system at the moment
and /proc/interrupt does not care, whether the interrupt was setup for a
clock event device or something else. It displays the name which is
given in the irqaction struct and does not care what it means. I did not
change the name in the IRQ#0 setup, so it still displays "timer" (which
can either be PIT or HPET), but this is something the interrupt layer
does not know and does not care about.

The special interrupts, which are not handled by the generic IRQ layer
(LOC, NMI) are displayed to have the complete statistics available.

We did not change anything on that. The changed behavior you are
observing (IRQ#0 is not incrementing) is reflecting the reality of the
system. IRQ#0 is not firing, so it does not increment.

	tglx



  parent reply	other threads:[~2007-02-06 23:36 UTC|newest]

Thread overview: 124+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-30  4:45 2.6.20-rc6-mm3 Andrew Morton
2007-01-30  4:50 ` 2.6.20-rc6-mm3 Jeff Garzik
2007-01-30  5:11   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-30  9:56     ` 2.6.20-rc6-mm3 Evgeniy Polyakov
2007-01-30  8:16 ` 2.6.20-rc6-mm3 Sunil Naidu
2007-01-30  8:32   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-30  9:06 ` 2.6.20-rc6-mm3 Olivier Galibert
2007-01-30  9:26   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-30 18:47     ` 2.6.20-rc6-mm3 Olivier Galibert
2007-01-31  7:57     ` 2.6.20-rc6-mm3 Len Brown
2007-02-01  4:25     ` 2.6.20-rc6-mm3 Len Brown
2007-01-30 22:18 ` 2.6.20-rc6-mm3 Maciej Rutecki
2007-01-30 22:27   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-31  0:55     ` 2.6.20-rc6-mm3 Karsten Wiese
2007-01-31 13:22       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-01-31 14:25         ` 2.6.20-rc6-mm3 Karsten Wiese
2007-02-01  8:01           ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-01 10:44             ` 2.6.20-rc6-mm3 Karsten Wiese
2007-03-01 11:11               ` 2.6.20-rc6-mm3 Karsten Wiese
2007-02-03  0:37             ` 2.6.20-rc6-mm3 Pavel Machek
2007-02-01 13:03       ` [PATCH -mm] gtod persistent clock resume fix Thomas Gleixner
2007-01-31 11:54     ` 2.6.20-rc6-mm3 Maciej Rutecki
2007-02-01  4:10       ` 2.6.20-rc6-mm3 Len Brown
2007-02-01  4:17         ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-31  1:16   ` 2.6.20-rc6-mm3 Tilman Schmidt
2007-01-31  1:25     ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-31 11:38       ` 2.6.20-rc6-mm3 Tilman Schmidt
2007-01-31 12:29         ` 2.6.20-rc6-mm3 Alexey Starikovskiy
2007-01-31 16:02           ` 2.6.20-rc6-mm3 Maciej Rutecki
2007-01-31 18:28           ` 2.6.20-rc6-mm3 Tilman Schmidt
2007-01-31 21:52 ` 2.6.20-rc6-mm3 Mattia Dongili
2007-01-31 23:21   ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01 19:04     ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-01 19:36     ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-01 20:01       ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-01 21:11         ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01 22:33           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-02 19:18             ` dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3] Mattia Dongili
2007-02-02 20:27               ` Thomas Gleixner
2007-02-02 20:43                 ` Mattia Dongili
2007-02-06 16:48                   ` Ingo Molnar
2007-02-06 19:28                     ` Mattia Dongili
2007-02-06 23:12                       ` Tilman Schmidt
2007-02-06 23:17                         ` Thomas Gleixner
2007-02-07  1:01                           ` Andrew Morton
2007-02-07 19:33                             ` Ingo Molnar
2007-02-01 21:37         ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01 20:24       ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01  0:14 ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01  0:24   ` 2.6.20-rc6-mm3 Andrew Morton
2007-02-01  0:27     ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01  0:36       ` 2.6.20-rc6-mm3 Andrew Morton
2007-02-01  0:38         ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01  6:20         ` 2.6.20-rc6-mm3 David Chinner
2007-02-01  7:12           ` 2.6.20-rc6-mm3 Andrew Morton
2007-02-01 19:01             ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01 19:18               ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-01 20:18                 ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01 20:26                   ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-01 23:02                     ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-05 12:02                       ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-05 12:17                         ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-05 12:56                           ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-05 18:20                             ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-05 18:34                               ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-02  4:08                 ` 2.6.20-rc6-mm3 David Chinner
2007-02-02  7:31                   ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-01 18:24 ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-01 19:37   ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-01 20:29     ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-01 20:38       ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-02 14:22         ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-02 14:47           ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-02 14:50             ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-02 16:04               ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-03  7:30                 ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-03  7:57                   ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-02 17:39 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 16:03 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 18:36   ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 18:45     ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 19:07       ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 19:55         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 20:20           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 20:40             ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 20:52               ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 20:56                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 21:09                   ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 21:20                     ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 21:23                     ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 21:41                       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 21:54                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 22:08                           ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 22:42                             ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 22:56                               ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 23:04                                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:14                                   ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 23:22                                     ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:28                                       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 23:35                                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:44                                           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 23:51                                           ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-07  2:46                                             ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:36                                       ` Thomas Gleixner [this message]
2007-02-07  1:12                                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-07 14:53                                           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 23:37                                       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 22:13                           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 21:43                       ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 21:59                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 21:17               ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 21:25                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:15               ` 2.6.20-rc6-mm3 Rob Landley
2007-02-06 23:28                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:55                   ` 2.6.20-rc6-mm3 Rob Landley
2007-02-06 22:11 ` [-mm patch] #ifdef ACPI_FUTURE_USAGE acpi_os_readable() Adrian Bunk
2007-02-06 22:12 ` [RFC: -mm patch] drivers/net/atl1/: possible cleanups Adrian Bunk
2007-02-07  0:19   ` Jay Cliburn
2007-02-07  0:22     ` Jeff Garzik
2007-02-07  0:24       ` J. K. Cliburn
2007-02-07  0:24     ` Adrian Bunk
2007-02-06 22:12 ` [-mm patch] drivers/scsi/aacraid/: cleanups Adrian Bunk
2007-02-06 22:12 ` [-mm patch] make gfs2_writepages() static Adrian Bunk
2007-02-07 10:50   ` Steven Whitehouse

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1170804989.3785.58.camel@chaos \
    --to=tglx@linutronix.de \
    --cc=akpm@osdl.org \
    --cc=dwalker@mvista.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --subject='Re: 2.6.20-rc6-mm3' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).