1. 02 Aug, 2016 1 commit
  2. 22 Jun, 2016 3 commits
  3. 08 Jul, 2015 1 commit
  4. 22 Jul, 2014 1 commit
  5. 19 Mar, 2014 1 commit
  6. 13 Feb, 2014 1 commit
  7. 19 Dec, 2013 1 commit
  8. 07 Dec, 2013 1 commit
    • Lv Zheng's avatar
      ACPI: Clean up inclusions of ACPI header files · 8b48463f
      Lv Zheng authored
      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: default avatarLv 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: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      8b48463f
  9. 25 Sep, 2013 1 commit
  10. 15 Jul, 2013 1 commit
  11. 09 Apr, 2013 1 commit
    • Al Viro's avatar
      procfs: new helper - PDE_DATA(inode) · d9dda78b
      Al Viro authored
      The only part of proc_dir_entry the code outside of fs/proc
      really cares about is PDE(inode)->data.  Provide a helper
      for that; static inline for now, eventually will be moved
      to fs/proc, along with the knowledge of struct proc_dir_entry
      layout.
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      d9dda78b
  12. 24 Mar, 2013 1 commit
  13. 25 Jan, 2013 1 commit
  14. 21 Sep, 2012 1 commit
  15. 10 Aug, 2012 1 commit
  16. 01 Jul, 2012 1 commit
  17. 23 Mar, 2011 1 commit
  18. 24 Feb, 2011 2 commits
    • Rafael J. Wysocki's avatar
      ACPI / Button: Avoid disabling wakeup unnecessarily on remove · c19f9a84
      Rafael J. Wysocki authored
      If a button device had already been enabled to wake up the system
      from sleep states before the button driver saw it, the driver
      shouldn't disable the device's wakeup capability when being detached
      from the device.
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      c19f9a84
    • Rafael J. Wysocki's avatar
      ACPI: Remove the wakeup.run_wake_count device field · 51907267
      Rafael J. Wysocki authored
      The wakeup.run_wake_count ACPI device field is only used by the PCI
      runtime PM code to "protect" devices from being prepared for
      generating wakeup signals more than once in a row.  However, it
      really doesn't provide any protection, because (1) all of the
      functions it is supposed to protect use their own reference counters
      effectively ensuring that the device will be set up for generating
      wakeup signals just once and (2) the PCI runtime PM code uses
      wakeup.run_wake_count in a racy way, since nothing prevents
      acpi_dev_run_wake() from being called concurrently from two different
      threads for the same device.
      
      Remove the wakeup.run_wake_count ACPI device field which is
      unnecessary, confusing and used in a wrong way.
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      51907267
  19. 07 Jan, 2011 2 commits
    • Rafael J. Wysocki's avatar
      ACPI / PM: Report wakeup events from buttons · 1f83511b
      Rafael J. Wysocki authored
      Since ACPI buttons and lids can be configured to wake up the system
      from sleep states, report wakeup events from these devices.
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      1f83511b
    • Rafael J. Wysocki's avatar
      ACPI / PM: Use device wakeup flags for handling ACPI wakeup devices · f2b56bc8
      Rafael J. Wysocki authored
      There are ACPI devices (buttons and the laptop lid) that can wake up
      the system from sleep states and have no "physical" companion
      devices.  The ACPI subsystem uses two flags, wakeup.state.enabled and
      wakeup.flags.always_enabled, for handling those devices, but they
      are not accessible through the standard device wakeup infrastructure.
      User space can only control them via the /proc/acpi/wakeup interface
      that is not really convenient (e.g. the way in which devices are
      enabled to wake up the system is not portable between different
      systems, because it requires one to know the devices' "names" used in
      the system's ACPI tables).
      
      To address this problem, use standard device wakeup flags instead of
      the special ACPI flags for handling those devices.  In particular,
      use device_set_wakeup_capable() to mark the ACPI wakeup devices
      during initialization and use device_set_wakeup_enable() to allow
      or disallow them to wake up the system from sleep states.  Rework
      the /proc/acpi/wakeup interface to take these changes into account.
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      f2b56bc8
  20. 01 Oct, 2010 1 commit
  21. 07 Jul, 2010 1 commit
  22. 17 Jun, 2010 1 commit
    • Rafael J. Wysocki's avatar
      ACPI / PM: Do not enable GPEs for system wakeup in advance · cb1cb178
      Rafael J. Wysocki authored
      After commit 9630bdd9
      (ACPI: Use GPE reference counting to support shared GPEs) the wakeup
      enable mask bits of GPEs are set as soon as the GPEs are enabled to
      wake up the system.  Unfortunately, this leads to a regression
      reported by Michal Hocko, where a system is woken up from ACPI S5 by
      a device that is not supposed to do that, because the wakeup enable
      mask bit of this device's GPE is always set when
      acpi_enter_sleep_state() calls acpi_hw_enable_all_wakeup_gpes(),
      although it should only be set if the device is supposed to wake up
      the system from the target state.
      
      To work around this issue, rework the ACPI power management code so
      that GPEs are not enabled to wake up the system upfront, but only
      during a system state transition when the target state of the system
      is known.  [Of course, this means that the reference counting of
      "wakeup" GPEs doesn't really make sense and it is sufficient to
      set/unset the wakeup mask bits for them during system sleep
      transitions.  This will allow us to simplify the GPE handling code
      quite a bit, but that change is too intrusive for 2.6.35.]
      
      Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15951Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      Reported-and-tested-by: default avatarMichal Hocko <mhocko@suse.cz>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      cb1cb178
  23. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      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: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  24. 23 Feb, 2010 2 commits
  25. 16 Dec, 2009 1 commit
  26. 13 Oct, 2009 1 commit
  27. 10 Sep, 2009 1 commit
  28. 28 Aug, 2009 1 commit
  29. 11 Apr, 2009 6 commits
  30. 05 Apr, 2009 1 commit