1. 24 5月, 2011 4 次提交
  2. 23 5月, 2011 23 次提交
  3. 22 5月, 2011 8 次提交
    • J
      PCI: Don't use dmi_name_in_vendors in quirk · 9251bac9
      Jean Delvare 提交于
      Don't use the costly dmi_name_in_vendors() when we know the string we
      are looking for can only be in the DMI board name field. This is more
      robust and, more importantly, much faster.
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      9251bac9
    • C
      PCI: remove unused AER functions · cbfddd20
      Chen Gong 提交于
      In the commit 28eb5f27, aer_osc_setup is removed but corresponding
      definiton information in the aerdrv.h is missed.
      Acked-by: NRafael J. Wysocki <rjw@sisk.pl>
      Signed-off-by: NChen Gong <gong.chen@linux.intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      cbfddd20
    • Y
      PCI/sysfs: move bus cpuaffinity to class dev_attrs · dc2c2c9d
      Yinghai Lu 提交于
      Requested by Greg KH to fix a race condition in the creating of PCI bus
      cpuaffinity files.
      Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
      Signed-off-by: NYinghai Lu <yinghai@kernel.org>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      dc2c2c9d
    • Y
      PCI: add rescan to /sys/.../pci_bus/.../ · b9d320fc
      Yinghai Lu 提交于
      After remove the device from /sys, we have to rescan all or
      find out the bridge and access /sys../device/rescan there.
      
      this patch add /sys/.../pci_bus/.../rescan. So user can rescan more easy.
      that is more clean and easy to understand.
      
      like after remove 0000:c4:00.0, you can rescan 0000:c4 directly.
      
      -v2: According to Jesse, use function instead of exposing attr, so could hide
      	#ifdef in header file.
           also add code to remove rescan file in remove path.
      -v3: GregKH pointed out that we should use dev_attrs to avoid racing.
           So add pcibus_attrs and make it to be member of pcibus_attrs.
      -v4: Change name to pcibus_dev_attrs according to GregKH
      Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
      Signed-off-by: NYinghai Lu <yinghai@kernel.org>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      b9d320fc
    • Y
      PCI: update bridge resources to get more big ranges when allocating space (again) · da7822e5
      Yinghai Lu 提交于
      With Ram's fixes, this should be safe to do again.  So let's give it
      another try.
      
      BIOS separates IO ranges between several IOHs, and on some slots, BIOS
      assigns resources to a bridge, but stops assigning resources to the
      device under that bridge, because the device needs a big resource.
      
      So:
      1. allocate resources and record the failed device resources
      2. clear the BIOS assigned resources of the parent bridge of failing device
      3. go back and call pci assign unassigned
      4. if it still fails, go up the tree, clear more bridges. and try again
      
      Now Ram's allocate requested resource already got into mainline. could
      put this one again.
      Reviewed-by: NRam Pai <linuxram@us.ibm.com>
      Signed-off-by: NYinghai Lu <yinghai@kernel.org>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      da7822e5
    • A
      PCI: Add interfaces to store and load the device saved state · ffbdd3f7
      Alex Williamson 提交于
      For KVM device assignment, we'd like to save off the state of a device
      prior to passing it to the guest and restore it later.  We also want
      to allow pci_reset_funciton() to be called while the device is owned
      by the guest.  This however overwrites and invalidates the struct pci_dev
      buffers, so we can't just manually call save and restore.  Add generic
      interfaces for the saved state to be stored and reloaded back into
      struct pci_dev at a later time.
      Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      ffbdd3f7
    • A
      PCI: Track the size of each saved capability data area · 24a4742f
      Alex Williamson 提交于
      This will allow us to store and load it later.
      Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      24a4742f
    • Y
      PCI/e1000e: Add and use pci_disable_link_state_locked() · 9f728f53
      Yinghai Lu 提交于
      Need to use it in _e1000e_disable_aspm.  This routine is used for error
      recovery, where the pci_bus_sem is already held, and we don't want
      pci_disable_link_state to try to take it again.  So add a locked variant
      for use in cases like this.
      
      Found lock up:
      
      [ 2374.654557] kworker/32:1    D ffff881027f6b0f0     0  6075      2 0x00000000
      [ 2374.654816]  ffff88503f099a68 0000000000000046 ffff88503f098000 0000000000004000
      [ 2374.654837]  00000000001d1ec0 ffff88503f099fd8 00000000001d1ec0 ffff88503f099fd8
      [ 2374.654860]  0000000000004000 00000000001d1ec0 ffff88503dcc8000 ffff88503f090000
      [ 2374.654880] Call Trace:
      [ 2374.654898]  [<ffffffff810b1302>] ? __lock_acquired+0x3a/0x224
      [ 2374.654914]  [<ffffffff81c2b59c>] ? _raw_spin_unlock_irq+0x30/0x36
      [ 2374.654925]  [<ffffffff810b069d>] ? trace_hardirqs_on_caller+0x1f/0x178
      [ 2374.654936]  [<ffffffff81c2ab24>] rwsem_down_failed_common+0xd3/0x103
      [ 2374.654945]  [<ffffffff810b158f>] ? __lock_contended+0x3a/0x2a2
      [ 2374.654955]  [<ffffffff81c2ab7b>] rwsem_down_read_failed+0x12/0x14
      [ 2374.654967]  [<ffffffff813371e4>] call_rwsem_down_read_failed+0x14/0x30
      [ 2374.654981]  [<ffffffff8135df20>] ? pci_disable_link_state+0x5f/0xf5
      [ 2374.654990]  [<ffffffff81c2a0e6>] ? down_read+0x7e/0x91
      [ 2374.654999]  [<ffffffff8135df20>] ? pci_disable_link_state+0x5f/0xf5
      [ 2374.655008]  [<ffffffff8135df20>] pci_disable_link_state+0x5f/0xf5
      [ 2374.655024]  [<ffffffff81661796>] e1000e_disable_aspm+0x55/0x5a
      [ 2374.655037]  [<ffffffff816677eb>] e1000_io_slot_reset+0x59/0xea
      [ 2374.655048]  [<ffffffff8135fe0d>] ? report_mmio_enabled+0x5d/0x5d
      [ 2374.655057]  [<ffffffff8135fe3b>] report_slot_reset+0x2e/0x5d
      [ 2374.655072]  [<ffffffff8135369e>] pci_walk_bus+0x8a/0xb7
      [ 2374.655081]  [<ffffffff8135fe0d>] ? report_mmio_enabled+0x5d/0x5d
      [ 2374.655091]  [<ffffffff813603be>] broadcast_error_message+0xa4/0xb2
      [ 2374.655101]  [<ffffffff81352c71>] ? pci_bus_read_config_dword+0x72/0x80
      [ 2374.655110]  [<ffffffff813606df>] do_recovery+0x9e/0xf9
      [ 2374.655120]  [<ffffffff81360786>] handle_error_source+0x4c/0x51
      [ 2374.655129]  [<ffffffff81360974>] aer_isr_one_error+0x1e9/0x21a
      [ 2374.655138]  [<ffffffff81360a6c>] aer_isr+0xc7/0xcc
      [ 2374.655147]  [<ffffffff813609a5>] ? aer_isr_one_error+0x21a/0x21a
      [ 2374.655159]  [<ffffffff81096d9f>] process_one_work+0x237/0x3ec
      [ 2374.655168]  [<ffffffff81096d10>] ? process_one_work+0x1a8/0x3ec
      [ 2374.655178]  [<ffffffff8109728d>] worker_thread+0x17c/0x240
      [ 2374.655186]  [<ffffffff810b0803>] ? trace_hardirqs_on+0xd/0xf
      [ 2374.655196]  [<ffffffff81097111>] ? manage_workers+0xab/0xab
      [ 2374.655209]  [<ffffffff8109c8ed>] kthread+0xa0/0xa8
      [ 2374.655223]  [<ffffffff81c332d4>] kernel_thread_helper+0x4/0x10
      [ 2374.655232]  [<ffffffff81c2b880>] ? retint_restore_args+0xe/0xe
      [ 2374.655243]  [<ffffffff8109c84d>] ? __init_kthread_worker+0x5b/0x5b
      [ 2374.655252]  [<ffffffff81c332d0>] ? gs_change+0xb/0xb
      
      when aer happens,
      pci_walk_bus already have down_read(&pci_bus_sem)...
      then report_slot_reset
              ==> e1000_io_slot_reset
                      ==> e1000e_disable_aspm
                              ==> pci_disable_link_state...
      
      We can not use pci_disable_link_state, and it will try to hold pci_bus_sem again.
      
      Try to have __pci_disable_link_state that will not need to hold pci_bus_sem.
      
      -v2: change name to pci_disable_link_state_locked() according to Jesse.
      
      [jbarnes: make sure new function is exported for modules]
      Signed-off-by: NYinghai Lu <yinghai@kernel.org>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      9f728f53
  4. 21 5月, 2011 5 次提交