1. 29 8月, 2014 1 次提交
  2. 08 8月, 2014 1 次提交
    • J
      x86, irq, PCI: Keep IRQ assignment for PCI devices during suspend/hibernation · 3eec5952
      Jiang Liu 提交于
      Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins.
      We need to keep IRQ assignment for PCI devices during suspend/hibernation,
      otherwise it may cause failure of suspend/hibernation due to:
      1) Device driver calls pci_enable_device() to allocate an IRQ number
         and register interrupt handler on the returned IRQ.
      2) Device driver's suspend callback calls pci_disable_device() and
         release assigned IRQ in turn.
      3) Device driver's resume callback calls pci_enable_device() to
         allocate IRQ number again. A different IRQ number may be assigned
         by IOAPIC driver this time.
      4) Now the hardware delivers interrupt to the new IRQ but interrupt
         handler is still registered against the old IRQ, so it breaks
         suspend/hibernation.
      
      To fix this issue, we keep IRQ assignment during suspend/hibernation.
      Flag pci_dev.dev.power.is_prepared is used to detect that
      pci_disable_device() is called during suspend/hibernation.
      Reported-and-Tested-by: NBorislav Petkov <bp@suse.de>
      Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Joerg Roedel <joro@8bytes.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
      Cc: Bjorn Helgaas <bhelgaas@google.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Grant Likely <grant.likely@linaro.org>
      Cc: Len Brown <lenb@kernel.org>
      Link: http://lkml.kernel.org/r/1407478071-29399-1-git-send-email-jiang.liu@linux.intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      3eec5952
  3. 22 6月, 2014 1 次提交
  4. 21 2月, 2014 1 次提交
  5. 18 2月, 2014 1 次提交
  6. 07 12月, 2013 1 次提交
    • L
      ACPI: Clean up inclusions of ACPI header files · 8b48463f
      Lv Zheng 提交于
      Replace direct inclusions of <acpi/acpi.h>, <acpi/acpi_bus.h> and
      <acpi/acpi_drivers.h>, which are incorrect, with <linux/acpi.h>
      inclusions and remove some inclusions of those files that aren't
      necessary.
      
      First of all, <acpi/acpi.h>, <acpi/acpi_bus.h> and <acpi/acpi_drivers.h>
      should not be included directly from any files that are built for
      CONFIG_ACPI unset, because that generally leads to build warnings about
      undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
      <linux/acpi.h> includes those files and for CONFIG_ACPI unset it
      provides stub ACPI symbols to be used in that case.
      
      Second, there are ordering dependencies between those files that always
      have to be met.  Namely, it is required that <acpi/acpi_bus.h> be included
      prior to <acpi/acpi_drivers.h> so that the acpi_pci_root declarations the
      latter depends on are always there.  And <acpi/acpi.h> which provides
      basic ACPICA type declarations should always be included prior to any other
      ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
      <linux/acpi.h> as appropriate.
      Signed-off-by: NLv Zheng <lv.zheng@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Matthew Garrett <mjg59@srcf.ucam.org>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci stuff)
      Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> (Xen stuff)
      Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      8b48463f
  7. 17 2月, 2013 1 次提交
  8. 22 11月, 2012 1 次提交
  9. 15 11月, 2012 1 次提交
  10. 06 11月, 2012 1 次提交
  11. 07 1月, 2012 1 次提交
  12. 17 7月, 2011 1 次提交
    • S
      ACPI: fix CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS · d7f6169a
      Stefan Assmann 提交于
      The following was observed by Steve Rostedt on 3.0.0-rc5
      Backtrace:
      irq 16: nobody cared (try booting with the "irqpoll" option)
      Pid: 65, comm: irq/16-uhci_hcd Not tainted 3.0.0-rc5-test+ #94
      Call Trace:
       [<ffffffff810aa643>] __report_bad_irq+0x37/0xc1
       [<ffffffff810aaa2d>] note_interrupt+0x14e/0x1c9
       [<ffffffff810a9a05>] ? irq_thread_fn+0x3c/0x3c
       [<ffffffff810a990e>] irq_thread+0xf6/0x1b1
       [<ffffffff810a9818>] ? irq_finalize_oneshot+0xb3/0xb3
       [<ffffffff8106b4d6>] kthread+0x9f/0xa7
       [<ffffffff814f1f04>] kernel_thread_helper+0x4/0x10
       [<ffffffff8103ca09>] ? finish_task_switch+0x7b/0xc0
       [<ffffffff814eac78>] ? retint_restore_args+0x13/0x13
       [<ffffffff8106b437>] ? __init_kthread_worker+0x5a/0x5a
       [<ffffffff814f1f00>] ? gs_change+0x13/0x13
      handlers:
      [<ffffffff810a912d>] irq_default_primary_handler threaded [<ffffffff8135eaa6>] usb_hcd_irq
      [<ffffffff810a912d>] irq_default_primary_handler threaded [<ffffffff8135eaa6>] usb_hcd_irq
      Disabling IRQ #16
      
      The problem being that a device triggers boot interrupts (due to threaded
      interrupt handling and masking of the IO-APIC), which are forwarded
      to the PIRQ line of the device. These interrupts are not handled on the PIRQ
      line because the interrupt handler is not present there.
      This should have already been fixed by CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS.
      However some parts of the quirk got lost in the ACPI merge. This is a resent of
      the patch proposed in 2009.
      See http://lkml.org/lkml/2009/9/7/192Signed-off-by: NStefan Assmann <sassmann@kpanic.de>
      Tested-by: NSteven Rostedt <rostedt@goodmis.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      d7f6169a
  13. 16 10月, 2010 1 次提交
  14. 05 5月, 2010 1 次提交
  15. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  16. 29 8月, 2009 1 次提交
  17. 18 6月, 2009 2 次提交
  18. 28 4月, 2009 1 次提交
    • Y
      irq: change ACPI GSI APIs to also take a device argument · a2f809b0
      Yinghai Lu 提交于
      We want to use dev_to_node() later on, to be aware of the 'home node'
      of the GSI in question.
      
      [ Impact: cleanup, prepare the IRQ code to be more NUMA aware ]
      Signed-off-by: NYinghai Lu <yinghai@kernel.org>
      Acked-by: NLen Brown <lenb@kernel.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Suresh Siddha <suresh.b.siddha@intel.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Len Brown <lenb@kernel.org>
      Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: linux-acpi@vger.kernel.org
      Cc: linux-ia64@vger.kernel.org
      LKML-Reference: <49F65560.20904@kernel.org>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      a2f809b0
  19. 04 4月, 2009 1 次提交
  20. 17 3月, 2009 1 次提交
  21. 31 12月, 2008 19 次提交