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From: Harald Arnesen <skogtun.linux@gmail.com>
To: Kernel development list <linux-kernel@vger.kernel.org>
Cc: Jiri Kosina <jkosina@suse.cz>, "Rafael J. Wysocki" <rjw@sisk.pl>,
	Peter Hurley <peter@hurleysoftware.com>,
	Alan Stern <stern@rowland.harvard.edu>,
	Thomas Meyer <thomas@m3y3r.de>,
	Shawn Starr <shawn.starr@rogers.com>,
	USB list <linux-usb@vger.kernel.org>,
	linux-acpi@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci@vger.kernel.org, Yinghai Lu <yinghai@kernel.org>
Subject: Re: [3.9-rc1] irq 16: nobody cared  (was [3.9-rc1] very poor interrupt responses)
Date: Fri, 15 Mar 2013 10:20:48 +0100	[thread overview]
Message-ID: <5142E7F0.4020002@gmail.com> (raw)
In-Reply-To: <alpine.LNX.2.00.1303150851020.9529@pobox.suse.cz>

I have the same problem on my Lenovo T500. I think the graphics card is
involved.

This laptop has "hybrid graphics" - one Intel GMA 4500MHD and one ATI
Mobility Radeon HD 3650. When I boot with the Intel card, I get "irq 16:
nobody cared" during boot, not when I boot with the ATI card.

And /proc/interrupts are surely different with the two cards. Look at
the irq 16 line:

$ cat intel-interrupts.txt
           CPU0       CPU1
  0:      23658      22859   IO-APIC-edge      timer
  1:        168        177   IO-APIC-edge      i8042
  8:          1          0   IO-APIC-edge      rtc0
  9:        329        347   IO-APIC-fasteoi   acpi
 12:       3065       3166   IO-APIC-edge      i8042
 16:      49732      50269   IO-APIC-fasteoi   yenta, uhci_hcd:usb6
 17:          1          0   IO-APIC-fasteoi   firewire_ohci, uhci_hcd:usb7
 18:          0          0   IO-APIC-fasteoi   mmc0, uhci_hcd:usb8
 19:        216        204   IO-APIC-fasteoi   ehci_hcd:usb2
 20:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
 21:        114        103   IO-APIC-fasteoi   uhci_hcd:usb4
 22:          0          0   IO-APIC-fasteoi   uhci_hcd:usb5
 23:          9          9   IO-APIC-fasteoi   i801_smbus, ehci_hcd:usb1
 40:          0          0  DMAR_MSI-edge      dmar2
 41:          0          0  DMAR_MSI-edge      dmar0
 42:          0          0  DMAR_MSI-edge      dmar3
 43:          0          0   PCI-MSI-edge      PCIe PME
 44:          0          0   PCI-MSI-edge      PCIe PME
 45:          0          0   PCI-MSI-edge      PCIe PME
 46:          0          0   PCI-MSI-edge      PCIe PME
 47:      10023      10173   PCI-MSI-edge      ahci
 48:         10          8   PCI-MSI-edge      mei
 49:         22         30   PCI-MSI-edge      eth0
 50:         66         71   PCI-MSI-edge      i915
 51:       2508       2348   PCI-MSI-edge      iwlwifi
 52:        168        169   PCI-MSI-edge      snd_hda_intel
NMI:         17         17   Non-maskable interrupts
LOC:      27988      25243   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:         17         17   Performance monitoring interrupts
IWI:          0          0   IRQ work interrupts
RTR:          0          0   APIC ICR read retries
RES:       4584       2746   Rescheduling interrupts
CAL:       6178       7492   Function call interrupts
TLB:        702        651   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:          1          1   Machine check polls
ERR:          0
MIS:          0

$ cat ati-interrupts.txt
           CPU0       CPU1
  0:      15488      15268   IO-APIC-edge      timer
  1:        182        189   IO-APIC-edge      i8042
  8:          1          0   IO-APIC-edge      rtc0
  9:        328        339   IO-APIC-fasteoi   acpi
 12:       2071       1997   IO-APIC-edge      i8042
 16:         55         47   IO-APIC-fasteoi   yenta, uhci_hcd:usb4
 17:          1          1   IO-APIC-fasteoi   firewire_ohci, uhci_hcd:usb5
 18:          0          0   IO-APIC-fasteoi   uhci_hcd:usb6, mmc0
 19:        219        202   IO-APIC-fasteoi   ehci_hcd:usb8
 20:          0          0   IO-APIC-fasteoi   uhci_hcd:usb1
 21:        112        104   IO-APIC-fasteoi   uhci_hcd:usb2
 22:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
 23:         10          8   IO-APIC-fasteoi   i801_smbus, ehci_hcd:usb7
 40:          0          0  DMAR_MSI-edge      dmar1
 41:          0          0  DMAR_MSI-edge      dmar0
 42:          0          0  DMAR_MSI-edge      dmar2
 43:          0          0   PCI-MSI-edge      PCIe PME
 44:          0          0   PCI-MSI-edge      PCIe PME
 45:          0          0   PCI-MSI-edge      PCIe PME
 46:          0          0   PCI-MSI-edge      PCIe PME
 47:          0          0   PCI-MSI-edge      PCIe PME
 48:       9733       9932   PCI-MSI-edge      ahci
 49:          9          9   PCI-MSI-edge      mei
 50:       2308       2196   PCI-MSI-edge      iwlwifi
 51:         15         35   PCI-MSI-edge      eth0
 52:        818        815   PCI-MSI-edge      radeon
 53:        167        167   PCI-MSI-edge      snd_hda_intel
NMI:         17         16   Non-maskable interrupts
LOC:      18139      34223   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:         17         16   Performance monitoring interrupts
IWI:          0          0   IRQ work interrupts
RTR:          0          0   APIC ICR read retries
RES:       3788       3563   Rescheduling interrupts
CAL:       6303       5894   Function call interrupts
TLB:        711        711   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:          1          1   Machine check polls
ERR:          0
MIS:          0
-- 
Hilsen Harald

  reply	other threads:[~2013-03-15  9:20 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-08 19:12 [3.9-rc1] very poor interrupt responses Shawn Starr
2013-03-08 21:33 ` [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses) Peter Hurley
2013-03-09  2:19   ` Alan Stern
2013-03-09  8:53     ` Thomas Meyer
2013-03-09 13:07       ` Peter Hurley
2013-03-13 21:35         ` Jiri Kosina
2013-03-14 14:51           ` Alan Stern
2013-03-14 14:51             ` Alan Stern
2013-03-14 14:56             ` Jiri Kosina
2013-03-14 15:18               ` Alan Stern
2013-03-14 15:18                 ` Alan Stern
2013-03-14 15:39                 ` Jiri Kosina
2013-03-14 15:47                   ` Jiri Kosina
2013-03-14 16:10                   ` Alan Stern
2013-03-14 16:10                     ` Alan Stern
2013-03-14 16:13                   ` Alan Stern
2013-03-14 16:13                     ` Alan Stern
2013-03-14 16:09               ` Jiri Kosina
2013-03-14 16:42                 ` Peter Hurley
2013-03-14 16:46                 ` Rafael J. Wysocki
2013-03-14 17:06                   ` Peter Hurley
2013-03-14 17:22                     ` Rafael J. Wysocki
2013-03-14 17:26                       ` Peter Hurley
2013-03-15  7:59                       ` Jiri Kosina
2013-03-15  9:20                         ` Harald Arnesen [this message]
2013-03-15 13:33                           ` Jiri Kosina
2013-03-15 13:33                             ` Jiri Kosina
2013-03-15 15:14                             ` Jiri Kosina
2013-03-15 19:14                               ` Yinghai Lu
2013-03-18  2:41                                 ` Shawn Starr
2013-03-18  9:12                                 ` Jiri Kosina
2013-03-18 18:57                                   ` Yinghai Lu
2013-03-18 22:05                                     ` Jiri Kosina
2013-03-18 22:50                                       ` Yinghai Lu
     [not found]                                   ` <alpine.LNX.2.00.1303181010080.9529-ztGlSCb7Y1iN3ZZ/Hiejyg@public.gmane.org>
2013-03-18 19:19                                     ` Daniel Vetter
2013-03-18 19:19                                       ` Daniel Vetter
2013-03-18 19:57                                       ` Chris Wilson
2013-03-18 22:04                                       ` Jiri Kosina
2013-03-15 15:32                             ` Greg KH
2013-03-15 15:37                               ` Jiri Kosina
2013-03-15 15:47                                 ` Greg KH
2013-03-15 16:21                                   ` Jiri Kosina
2013-03-18  8:21                                   ` Daniel Vetter
2013-03-18 15:56                                     ` [PATCH] drm/i915: stop using GMBUS IRQs on Gen4 chips (was Re: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses)) Jiri Kosina
2013-03-18 17:04                                       ` Chris Wilson
2013-03-19  8:56                                         ` Jiri Kosina
2013-03-19  9:03                                           ` Chris Wilson
2013-03-18 19:21                                       ` Daniel Vetter
2013-03-18 11:13                             ` [PATCH] drm/i915: Flush writes to GMBUS registers Chris Wilson
2013-03-18 11:51                               ` Jiri Kosina
2013-03-18 12:48                                 ` Chris Wilson
2013-03-14 18:48           ` [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses) Yinghai Lu
2013-03-11  3:38 ` [3.9-rc1] very poor interrupt responses Rafael J. Wysocki
2013-03-11 10:09   ` Harald Arnesen
2013-03-11 14:55     ` Rafael J. Wysocki
2013-03-18  7:14 [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses) Thomas Meyer
2013-03-18  7:14 ` Thomas Meyer
2013-03-18  7:14 ` Thomas Meyer

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