1. 18 10月, 2010 1 次提交
    • T
      pciehp: update workqueue usage · a827ea30
      Tejun Heo 提交于
      * Rename pciehp_wq to pciehp_ordered_wq and add non-ordered pciehp_wq
        which is used instead of the system workqueue.  This is to remove
        the use of flush_scheduled_work() which is deprecated and scheduled
        for removal.
      
      * With cmwq in place, there's no point in creating workqueues lazily.
        Create both pciehp_wq and pciehp_ordered_wq upfront.
      
      * Include workqueue.h from pciehp.h.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Acked-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      a827ea30
  2. 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
  3. 23 2月, 2010 1 次提交
  4. 25 11月, 2009 1 次提交
  5. 05 11月, 2009 1 次提交
  6. 18 9月, 2009 8 次提交
  7. 10 9月, 2009 1 次提交
    • E
      PCI: Simplify hotplug mch quirk. · 0ba379ec
      Eric W. Biederman 提交于
      There is a very old quirk for the intel E7502 E7320 and E7525 memory
      controller hubs that disables usage of msi interrupts on pcie hotplug
      bridges of those devices, and disables changing the affinity of irqs.
      
      Today all we have to do to disable msi on a specific device is to set
      dev->no_msi, which is much more straightforward than the previous
      logic.
      
      The re-running of this fixup after pci hotplug happens below these
      devices is totally bogus.  All of the state we change is pure software
      state and we don't change the hardware at all.  Which means hotplug on
      the lower devices doesn't have a chance to change this state.  So we
      can safely remove the special case from the pciehp driver and the pcie
      portdriver.
      
      I suspect the special case was someone's expermental debug code that
      slipped in. Certainly it isn't mentioned in commit
      6fb8880a61510295aece04a542767161f624dffe aka BKrev:
      41966101LJ_ogfOU0m2aE6teZfQnuQ where the code first appears.
      Reviewed-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      0ba379ec
  8. 13 7月, 2009 1 次提交
  9. 08 1月, 2009 1 次提交
  10. 24 10月, 2008 1 次提交
  11. 23 10月, 2008 2 次提交
  12. 21 10月, 2008 1 次提交
  13. 28 5月, 2008 2 次提交
    • K
      pciehp: move msleep after power off · 0711c70e
      Kenji Kaneshige 提交于
      According to the PCI Express specification, we must wait for at least
      1 second after turning power off before taking any action that relies
      on power having been removed from the slot/adapter. For this, current
      pciehp wait for 1 second after issuing the power off command in
      hpc_power_off_slot() function. But waiting for 1 second in
      hpc_power_off_slot() can make pciehp probing slow-down because pciehp
      probe code calls hpc_power_off_slot() if the slot is not occupied just
      in case. We don't need to wait for 1 second at the pciehp probe time
      because there is no action on that empty slot. So move 1 second wait
      from hpc_power_off_slot() to the caller of hpc_power_off_slot().
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      0711c70e
    • K
      pciehp: fix NULL dereference in interrupt handler · dbd79aed
      Kenji Kaneshige 提交于
      Fix the following NULL dereference problem reported from Pierre Ossman
      and Ingo Molnar.
      
      pciehp: HPC vendor_id 8086 device_id 27d0 ss_vid 0 ss_did 0
      pciehp: pciehp_find_slot: slot (device=0x0) not found
      BUG: unable to handle kernel NULL pointer dereference at 0000000000000070
      IP: [<ffffffff80494a8b>] pciehp_handle_presence_change+0x7e/0x113
      PGD 0
      Oops: 0000 [1]
      CPU 0
      Modules linked in:
      Pid: 1, comm: swapper Tainted: G        W 2.6.26-rc3-sched-devel.git-00001-g2b99b26-dirty #170
      RIP: 0010:[<ffffffff80494a8b>]  [<ffffffff80494a8b>] pciehp_handle_presence_change+0x7e/0x113
      RSP: 0000:ffff81003f83fbb0  EFLAGS: 00010046
      RAX: 0000000000000039 RBX: 0000000000000000 RCX: 0000000000000000
      RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000046
      RBP: ffff81003f83fbd0 R08: 0000000000000001 R09: ffffffff80245103
      R10: 0000000000000020 R11: 0000000000000000 R12: ffff81003ea53a30
      R13: 0000000000000000 R14: 0000000000000011 R15: ffffffff80495926
      FS:  0000000000000000(0000) GS:ffffffff80be7400(0000) knlGS:0000000000000000
      CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
      CR2: 0000000000000070 CR3: 0000000000201000 CR4: 00000000000006a0
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
      Process swapper (pid: 1, threadinfo ffff81003f83e000, task ffff81003f840000)
      Stack:  0000000000000008 ffff81003f83fbf6 ffff81003ea53a30 0000000000000008
       ffff81003f83fc10 ffffffff80495ab4 0000000000000011 0000000000000002
       0000000000000202 0000000000000202 00000000fffffff4 ffff81003ea53a30
      Call Trace:
       [<ffffffff80495ab4>] pcie_isr+0x18e/0x1bc
       [<ffffffff80260831>] request_irq+0x106/0x12f
       [<ffffffff80495fb6>] pcie_init+0x15e/0x6cc
       [<ffffffff804933a3>] pciehp_probe+0x64/0x541
       [<ffffffff8048f4e7>] pcie_port_probe_service+0x4c/0x76
       [<ffffffff8054af70>] driver_probe_device+0xd4/0x1f0
       [<ffffffff8054b108>] __driver_attach+0x7c/0x7e
       [<ffffffff8054b08c>] ? __driver_attach+0x0/0x7e
       [<ffffffff8054a4b6>] bus_for_each_dev+0x53/0x7d
       [<ffffffff8054ad3c>] driver_attach+0x1c/0x1e
       [<ffffffff8054a9c2>] bus_add_driver+0xdd/0x25b
       [<ffffffff80c09d3d>] ? pcied_init+0x0/0x8b
       [<ffffffff8054b288>] driver_register+0x5f/0x13e
       [<ffffffff80c09d3d>] ? pcied_init+0x0/0x8b
       [<ffffffff8048f441>] pcie_port_service_register+0x47/0x49
       [<ffffffff80c09d52>] pcied_init+0x15/0x8b
       [<ffffffff80bf3938>] kernel_init+0x75/0x243
       [<ffffffff808639d2>] ? _spin_unlock_irq+0x2b/0x3a
       [<ffffffff80228d1f>] ? finish_task_switch+0x57/0x9a
       [<ffffffff8020c258>] child_rip+0xa/0x12
       [<ffffffff8020bcec>] ? restore_args+0x0/0x30
       [<ffffffff80bf38c3>] ? kernel_init+0x0/0x243
       [<ffffffff8020c24e>] ? child_rip+0x0/0x12
      
      Code: 83 80 00 00 00 48 39 f0 75 e1 0f b6 c9 48 c7 c2 00 0e 8d 80 48 c7 c6 8a 60 a6 80 48 c7 c7 10 db a8 80 31 c0 e8 3f 8d d9 ff 31 db <48> 8b 43 70 48 8d 75 ef 48 89 df ff 50 30 80 7d ef 00 74 37 48
      RIP  [<ffffffff80494a8b>] pciehp_handle_presence_change+0x7e/0x113
       RSP <ffff81003f83fbb0>
      CR2: 0000000000000070
      Kernel panic - not syncing: Fatal exception
      
      The situation under which it occurs is hw and timing related: it appears
      to happen on a system that has PCI hotplug hardware but with no active
      hotplug cards, and another interrupt in the same (shared) IRQ line
      arrives too early, before the hotplug-slot entry has been set up - as
      triggered by CONFIG_DEBUG_SHIRQ=y:
      
      This patch contains the following two fixes.
      
      (1) Clear all events bits in Slot Status register to prevent the pciehp
          driver from detecting the spurious events that would have been occur
          before pciehp loading.
      
      (2) Add check whether slot initialization had been already done.
      
      This is short term fix. We need more structural fixes to install
      interrupt handler after slot initialization is done.
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      dbd79aed
  14. 26 4月, 2008 1 次提交
  15. 21 4月, 2008 1 次提交
  16. 02 2月, 2008 4 次提交
  17. 29 11月, 2007 1 次提交
    • R
      pci hotplug: kernel-doc fixes · 26e6c66e
      Randy Dunlap 提交于
      acpiphp.h: not using kernel-doc, so change /** to /*
      acpiphp_core.c: lots of kernel-doc cleanups
      acpiphp_glue.c: lots of kernel-doc cleanups
      acpiphp_ibm.c: lots of kernel-doc cleanups
      cpqphp_core.c: lots of kernel-doc cleanups
      cpqphp_ctrl.c: lots of kernel-doc cleanups
      fakephp.c:  correct kernel-doc notation
      pciehp_ctrl.c: correct kernel-doc notation
      rpadlpar_core.c: correct function names & kernel-doc notation
      rpaphp_core.c: correct kernel-doc notation
      shpchp_ctrl.c: correct kernel-doc notation
      Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
      Cc: Kristen Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      26e6c66e
  18. 13 10月, 2007 1 次提交
  19. 12 7月, 2007 1 次提交
  20. 03 5月, 2007 2 次提交
  21. 08 2月, 2007 3 次提交
  22. 19 10月, 2006 3 次提交
  23. 27 9月, 2006 1 次提交