1. 08 11月, 2008 1 次提交
    • T
      ACPI video: if no ACPI backlight support, use vendor drivers · c3d6de69
      Thomas Renninger 提交于
      If an ACPI graphics device supports backlight brightness functions (cmp. with
      latest ACPI spec Appendix B), let the ACPI video driver control backlight and
      switch backlight control off in vendor specific ACPI drivers (asus_acpi,
      thinkpad_acpi, eeepc, fujitsu_laptop, msi_laptop, sony_laptop, acer-wmi).
      
      Currently it is possible to load above drivers and let both poke on the
      brightness HW registers, the video and vendor specific ACPI drivers -> bad.
      
      This patch provides the basic support to check for BIOS capabilities before
      driver loading time. Driver specific modifications are in separate follow up
      patches.
      
      "acpi_backlight=vendor"
      	Prever vendor driver over ACPI driver for backlight.
      "acpi_backlight=video" (default)
      	Prever ACPI driver over vendor driver for backlight.
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      Acked-by: NZhang Rui <rui.zhang@intel.com>
      Signed-off-by: NAndi Kleen <ak@linux.intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      c3d6de69
  2. 07 11月, 2008 1 次提交
    • B
      ACPI: remove CONFIG_ACPI_EC · 8950d89a
      Bjorn Helgaas 提交于
      Remove CONFIG_ACPI_EC.  It was always set the same as CONFIG_ACPI,
      and it had no menu label, so there was no way to set it to anything
      other than "y".
      
      Per section 6.5.4 of the ACPI 3.0b specification,
      
          OSPM must make Embedded Controller operation regions, accessed
          via the Embedded Controllers described in ECDT, available before
          executing any control method.
      
      The ECDT table is optional, but if it is present, the above text
      means that the EC it describes is a required part of the ACPI
      subsystem, so CONFIG_ACPI_EC=n wouldn't make sense.
      Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com>
      Acked-by: NAlexey Starikovskiy <astarikovskiy@suse.de>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      8950d89a
  3. 11 10月, 2008 1 次提交
  4. 25 7月, 2008 1 次提交
  5. 08 7月, 2008 1 次提交
  6. 13 6月, 2008 1 次提交
    • R
      Suspend-related patches for 2.6.27 · d8f3de0d
      Rafael J. Wysocki 提交于
      ACPI PM: Add possibility to change suspend sequence
      
      There are some systems out there that don't work correctly with
      our current suspend/hibernation code ordering.  Provide a workaround
      for these systems allowing them to pass 'acpi_sleep=old_ordering' in
      the kernel command line so that it will use the pre-ACPI 2.0 ("old")
      suspend code ordering.
      
      Unfortunately, this requires us to add a platform hook to the
      resuming of devices for recovering the platform in case one of the
      device drivers' .suspend() routines returns error code.  Namely,
      ACPI 1.0 specifies that _PTS should be called before suspending
      devices, but _WAK still should be called before resuming them in
      order to undo the changes made by _PTS.  However, if there is an
      error during suspending devices, they are automatically resumed
      without returning control to the PM core, so the _WAK has to be
      called from within device_resume() in that cases.
      
      The patch also reorders and refactors the ACPI suspend/hibernation
      code to avoid duplication as far as reasonably possible.
      Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      Acked-by: NPavel Machek <pavel@suse.cz>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      d8f3de0d
  7. 27 4月, 2008 1 次提交
  8. 14 2月, 2008 1 次提交
  9. 07 2月, 2008 4 次提交
    • J
      ACPI: cleanup acpi.h · ee1ce6fc
      Jean Delvare 提交于
      Two cleanups to <linux/acpi.h>:
      * Stop defining acpi_mp_config, it isn't used anywhere.
      * Discard nested "#ifdef CONFIG_ACPI", they are useless and
        error-prone.
      Signed-off-by: NJean Delvare <jdelvare@suse.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      ee1ce6fc
    • T
      ACPI: Export acpi_check_resource_conflict · 443dea72
      Thomas Renninger 提交于
      Export acpi_check_resource_conflict(), sometimes drivers already have
      a struct resource at hand so no need to use the wrappers to build a new
      one.
      Signed-off-by: NJean Delvare <jdelvare@suse.de>
      Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
      Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      443dea72
    • T
      ACPI: track opregion names to avoid driver resource conflicts. · df92e695
      Thomas Renninger 提交于
      Small ACPICA extension to be able to store the name of operation regions in osl.c later
      
      In ACPI, AML can define accesses to IO ports and System Memory by Operation
      Regions.  Those are not registered as done by PNPACPI using resource templates
      (and _CRS/_SRS methods).
      
      The IO ports and System Memory regions may get accessed by arbitrary AML code.
       When native drivers are accessing the same resources bad things can happen
      (e.g.  a critical shutdown temperature of 3000 C every 2 months or so).
      
      It is not really possible to register the operation regions via
      request_resource, as they often overlap with pnp or other resources (e.g.
      statically setup IO resources below 0x100).
      
      This approach stores all Operation Region declarations (IO and System Memory
      only) at ACPI table parse time.  It offers a similar functionality like
      request_region and let drivers which are known to possibly use the same IO
      ports and Memory which are also often used by ACPI (hwmon and i2c) check for
      ACPI interference.
      
      A boot parameter acpi_enforce_resources=strict/lax/no is provided, which
      is default set to lax:
        - strict: let conflicting drivers fail to load with an error message
        - lax:    let conflicting driver work normal with a warning message
        - no:     no functional change at all
      Depending on the feedback and the kind of interferences we see, this
      should be set to strict at later time.
      
      Goal of this patch set is:
        - Identify ACPI interferences in bug reports (very hard to reproduce
          and to identify)
        - Find BIOSes for that an ACPI driver should exist for specific HW
          instead of a native one.
        - stability in general
      
      Provide acpi_check_{mem_}region.
      
      Drivers can additionally check against possible ACPI interference by also
      invoking this shortly before they call request_region.
      If -EBUSY is returned, the driver must not load.
      Use acpi_enforce_resources=strict/lax/no options to:
        - strict: let conflicting drivers fail to load with an error message
        - lax:    let conflicting driver work normal with a warning message
        - no:     no functional change at all
      
      Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
      Cc: Jean Delvare <khali@linux-fr.org>
      Cc: Len Brown <lenb@kernel.org>
      Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      df92e695
    • L
      ACPI: create /sys/firmware/acpi/interrupts · 5229e87d
      Len Brown 提交于
      See Documentation/ABI/testing/sysfs-firmware-acpi
      Based-on-original-patch-by: NLuming Yu <luming.yu@intel.com>
      Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      5229e87d
  10. 06 2月, 2008 1 次提交
    • C
      ACPI: WMI: Add ACPI-WMI mapping driver · bff431e4
      Carlos Corbacho 提交于
      The following is an implementation of the Windows Management
      Instrumentation (WMI) ACPI interface mapper (PNP0C14).
      
      What it does:
      
      Parses the _WDG method and exports functions to process WMI method calls,
      data block query/ set commands (both based on GUID) and does basic event
      handling.
      
      How: WMI presents an in kernel interface here (essentially, a minimal
      wrapper around ACPI)
      
      (const char *guid assume the 36 character ASCII representation of
      a GUID - e.g. 67C3371D-95A3-4C37-BB61-DD47B491DAAB)
      
      wmi_evaluate_method(const char *guid, u8 instance, u32 method_id,
      const struct acpi_buffer *in, struct acpi_buffer *out)
      
      wmi_query_block(const char *guid, u8 instance,
      struct acpi_buffer *out)
      
      wmi_set_block(const char *guid, u38 instance,
      const struct acpi_buffer *in)
      
      wmi_install_notify_handler(acpi_notify_handler handler);
      
      wmi_remove_notify_handler(void);
      
      wmi_get_event_data(u32 event, struct acpi_buffer *out)
      
      wmi_has_guid(const char guid*)
      
      wmi_has_guid() is a helper function to find if a GUID exists or not on the
      system (a quick and easy way for WMI dependant drivers to see if the
      the method/ block they want exists, since GUIDs are supposed to be unique).
      
      Event handling - allow a WMI based driver to register a notifier handler
      for each GUID with WMI. When a notification is sent to a GUID in WMI, the
      handler registered with WMI is then called (it is left to the caller to
      ask for the WMI event data associated with the GUID, if needed).
      
      What it won't do:
      
      Unicode - The MS article[1] calls for converting between ASCII and Unicode (or
      vice versa) if a GUID is marked as "string". This is left up to the calling
      driver.
      
      Handle a MOF[1] - the WMI mapper just exports methods, data and events to
      userspace. MOF handling is down to userspace.
      
      Userspace interface - this will be added later.
      
      [1] http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
      
      ===
      ChangeLog
      ==
      
      v1 (2007-10-02):
      
      * Initial release
      
      v2 (2007-10-05):
      
      * Cleaned up code - split up super "wmi_evaluate_block" -> each external
        symbol now handles its own ACPI calls, rather than handing off to
        a "super" method (and in turn, is a lot simpler to read)
      * Added a find_guid() symbol - return true if a given GUID exists on
        the system
      * wmi_* functions now return type acpi_status (since they are just
        fancy wrappers around acpi_evaluate_object())
      * Removed extra debug code
      
      v3 (2007-10-27)
      
      * More code clean up - now passes checkpatch.pl
      * Change data block calls - ref MS spec, method ID is not required for
        them, so drop it from the function parameters.
      * Const'ify guid in the function call parameters.
      * Fix _WDG buffer handling - copy the data to our own private structure.
      * Change WMI from tristate to bool - otherwise the external functions are
        not exported in linux/acpi.h if you try to build WMI as a module.
      * Fix more flag comparisons.
      * Add a maintainers entry - since I wrote this, I should take the blame
        for it.
      
      v4 (2007-10-30)
      
      * Add missing brace from after fixing checkpatch errors.
      * Rewrote event handling - allow external drivers to register with WMI to
        handle WMI events
      * Clean up flags and sanitise flag handling
      
      v5 (2007-11-03)
      
      * Add sysfs interface for userspace. Export events over netlink again.
      * Remove module left overs, fully convert to built-in driver.
      * Tweak in-kernel API to use u8 for instance, since this is what the GUID
        blocks use (so instance cannot be greater than u8).
      * Export wmi_get_event_data() for in kernel WMI drivers.
      
      v6 (2007-11-07)
      
      * Split out userspace into a different patch
      
      v7 (2007-11-20)
      
      * Fix driver to handle multiple PNP0C14 devices - store all GUIDs using
        the kernel's built in list functions, and just keep adding to the list
        every time we handle a PNP0C14 devices - GUIDs will always be unique,
        and WMI callers do not know or care about different devices.
      * Change WMI event handler registration to use its' own event handling
        struct; we should not pass an acpi_handle down to any WMI based drivers
        - they should be able to function with only the calls provided in WMI.
      * Update my e-mail address
      
      v8 (2007-11-28)
      
      * Convert back to a module.
      * Update Kconfig to default to building as a module.
      * Remove an erroneous printk.
      * Simply comments for string flag (since we now leave the handling to the
        caller).
      
      v9 (2007-12-07)
      
      * Add back missing MODULE_DEVICE_TABLE for autoloading
      * Checkpatch fixes
      
      v10 (2007-12-12)
      
      * Workaround broken GUIDs declared expensive without a WCxx method.
      * Minor cleanups
      
      v11 (2007-12-17)
      
      * More fixing for broken GUIDs declared expensive without a WCxx method.
      * Add basic EmbeddedControl region handling.
      
      v12 (2007-12-18)
      
      * Changed EC region handling code, as per Alexey's comments.
      
      v13 (2007-12-27)
      
      * Changed event handling so that we can have one event handler registered
        per GUID, as per Matthew Garrett's suggestion.
      
      v14 (2008-01-12)
      
      * Remove ACPI debug statements
      
      v15 (2008-02-01)
      
      * Replace two remaining 'x == NULL' type tests with '!x'
      
      v16 (2008-02-05)
      
      * Change MAINTAINERS entry, as I am not, and never have been, paid to work
        on WMI
      * Remove 'default' line from Kconfig
      Signed-off-by: NCarlos Corbacho <carlos@strangeworlds.co.uk>
      CC: Matthew Garrett <mjg59@srcf.ucam.org>
      CC: Alexey Starikovskiy <aystarik@gmail.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      bff431e4
  11. 24 1月, 2008 1 次提交
    • L
      ACPI: make _OSI(Linux) console messages smarter · d4b7dc49
      Len Brown 提交于
      If BIOS invokes _OSI(Linux), the kernel response
      depends on what the ACPI DMI list knows about the system,
      and that is reflectd in dmesg:
      
      1) System unknown to DMI:
      
      ACPI: BIOS _OSI(Linux) query ignored
      ACPI: DMI System Vendor: LENOVO
      ACPI: DMI Product Name: 7661W1P
      ACPI: DMI Product Version: ThinkPad T61
      ACPI: DMI Board Name: 7661W1P
      ACPI: DMI BIOS Vendor: LENOVO
      ACPI: DMI BIOS Date: 10/18/2007
      ACPI: Please send DMI info above to linux-acpi@vger.kernel.org
      ACPI: If "acpi_osi=Linux" works better, please notify linux-acpi@vger.kernel.org
      
      2) System known to DMI, but effect of OSI(Linux) unknown:
      
      ACPI: DMI detected: Lenovo ThinkPad T61
      ...
      ACPI: BIOS _OSI(Linux) query ignored via DMI
      ACPI: If "acpi_osi=Linux" works better, please notify linux-acpi@vger.kernel.org
      
      3) System known to DMI, which disables _OSI(Linux):
      
      ACPI: DMI detected: Lenovo ThinkPad T61
      ...
      ACPI: BIOS _OSI(Linux) query ignored via DMI
      
      4) System known to DMI, which enable _OSI(Linux):
      
      ACPI: DMI detected: Lenovo ThinkPad T61
      ACPI: Added _OSI(Linux)
      ...
      ACPI: BIOS _OSI(Linux) query honored via DMI
      
      cmdline overrides take precidence over the built-in
      default and the DMI prescribed default.
      cmdline "acpi_osi=Linux" results in:
      
      ACPI: BIOS _OSI(Linux) query honored via cmdline
      Signed-off-by: NLen Brown <len.brown@intel.com>
      d4b7dc49
  12. 14 12月, 2007 1 次提交
    • L
      ACPI: tables: complete searching upon RSDP w/ bad checksum. · 239665a3
      Len Brown 提交于
      ACPI tables follow a tree structure in memory.
      The root of the tree is the RSDP (Root System Description Pointer).
      
      To find the RSDP, the OS searches for the signature "RSD PTR "
      in well known physical memory locations.  Then the OS computes
      a table checksum to verify that the signature is really part
      of a valid table header.
      
      Some systems have a proper signature but an invalid checksum;
      followed elsewhere by a proper signature with valid checksum.
      
      http://bugzilla.kernel.org/show_bug.cgi?id=9444
      
      The Linux RSDP scanning code bailed out on those systems
      and as a result they booted with ACPI disabled.
      
      Fix this by deleting the Linux RSDP scanning code and
      plugging in the ACPICA RSDP scanning code.
      Signed-off-by: NLen Brown <len.brown@intel.com>
      239665a3
  13. 20 11月, 2007 1 次提交
  14. 10 10月, 2007 1 次提交
    • L
      cpuidle: consolidate 2.6.22 cpuidle branch into one patch · 4f86d3a8
      Len Brown 提交于
      commit e5a16b1f9eec0af7cfa0830304b41c1c0833cf9f
      Author: Len Brown <len.brown@intel.com>
      Date:   Tue Oct 2 23:44:44 2007 -0400
      
          cpuidle: shrink diff
      
          processor_idle.c |  440 +++++++++++++++++++++++++++++++++++++++++--
          1 file changed, 429 insertions(+), 11 deletions(-)
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit dfbb9d5aedfb18848a3e0d6f6e3e4969febb209c
      Author: Len Brown <len.brown@intel.com>
      Date:   Wed Sep 26 02:17:55 2007 -0400
      
          cpuidle: reduce diff size
      
          Reduces the cpuidle processor_idle.c diff vs 2.6.22 from this
           processor_idle.c | 2006 ++++++++++++++++++++++++++-----------------
           1 file changed, 1219 insertions(+), 787 deletions(-)
      
          to this:
           processor_idle.c |  502 +++++++++++++++++++++++++++++++++++++++----
           1 file changed, 458 insertions(+), 44 deletions(-)
      
          ...for the purpose of making the cpuilde patch less invasive
          and easier to review.
      
          no functional changes.  build tested only.
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 889172fc915f5a7fe20f35b133cbd205ce69bf6c
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Thu Sep 13 13:40:05 2007 -0700
      
          cpuidle: Retain old ACPI policy for !CONFIG_CPU_IDLE
      
          Retain the old policy in processor_idle, so that when CPU_IDLE is not
          configured, old C-state policy will still be used. This provides a
          clean gradual migration path from old ACPI policy to new cpuidle
          based policy.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 9544a8181edc7ecc33b3bfd69271571f98ed08bc
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Thu Sep 13 13:39:17 2007 -0700
      
          cpuidle: Configure governors by default
      
          Quoting Len "Do not give an option to users to shoot themselves in the foot".
      
          Remove the configurability of ladder and menu governors as they are
          needed for default policy of cpuidle. That way users will not be able to
          have cpuidle without any policy loosing all C-state power savings.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 8975059a2c1e56cfe83d1bcf031bcf4cb39be743
      Author: Adam Belay <abelay@novell.com>
      Date:   Tue Aug 21 18:27:07 2007 -0400
      
          CPUIDLE: load ACPI properly when CPUIDLE is disabled
      
          Change the registration return codes for when CPUIDLE
          support is not compiled into the kernel.  As a result, the ACPI
          processor driver will load properly even if CPUIDLE is unavailable.
          However, it may be possible to cleanup the ACPI processor driver further
          and eliminate some dead code paths.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Acked-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit e0322e2b58dd1b12ec669bf84693efe0dc2414a8
      Author: Adam Belay <abelay@novell.com>
      Date:   Tue Aug 21 18:26:06 2007 -0400
      
          CPUIDLE: remove cpuidle_get_bm_activity()
      
          Remove cpuidle_get_bm_activity() and updates governors
          accordingly.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Acked-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 18a6e770d5c82ba26653e53d240caa617e09e9ab
      Author: Adam Belay <abelay@novell.com>
      Date:   Tue Aug 21 18:25:58 2007 -0400
      
          CPUIDLE: max_cstate fix
      
          Currently max_cstate is limited to 0, resulting in no idle processor
          power management on ACPI platforms.  This patch restores the value to
          the array size.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Acked-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 1fdc0887286179b40ce24bcdbde663172e205ef0
      Author: Adam Belay <abelay@novell.com>
      Date:   Tue Aug 21 18:25:40 2007 -0400
      
          CPUIDLE: handle BM detection inside the ACPI Processor driver
      
          Update the ACPI processor driver to detect BM activity and
          limit state entry depth internally, rather than exposing such
          requirements to CPUIDLE.  As a result, CPUIDLE can drop this
          ACPI-specific interface and become more platform independent.  BM
          activity is now handled much more aggressively than it was in the
          original implementation, so some testing coverage may be needed to
          verify that this doesn't introduce any DMA buffer under-run issues.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Acked-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 0ef38840db666f48e3cdd2b769da676c57228dd9
      Author: Adam Belay <abelay@novell.com>
      Date:   Tue Aug 21 18:25:14 2007 -0400
      
          CPUIDLE: menu governor updates
      
          Tweak the menu governor to more effectively handle non-timer
          break events.  Non-timer break events are detected by comparing the
          actual sleep time to the expected sleep time.  In future revisions, it
          may be more reliable to use the timer data structures directly.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Acked-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit bb4d74fca63fa96cf3ace644b15ae0f12b7df5a1
      Author: Adam Belay <abelay@novell.com>
      Date:   Tue Aug 21 18:24:40 2007 -0400
      
          CPUIDLE: fix 'current_governor' sysfs entry
      
          Allow the "current_governor" sysfs entry to properly handle
          input terminated with '\n'.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Acked-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit df3c71559bb69b125f1a48971bf0d17f78bbdf47
      Author: Len Brown <len.brown@intel.com>
      Date:   Sun Aug 12 02:00:45 2007 -0400
      
          cpuidle: fix IA64 build (again)
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit a02064579e3f9530fd31baae16b1fc46b5a7bca8
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Sun Aug 12 01:39:27 2007 -0400
      
          cpuidle: Remove support for runtime changing of max_cstate
      
          Remove support for runtime changeability of max_cstate. Drivers can use
          use latency APIs.
      
          max_cstate can still be used as a boot time option and dmi override.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 0912a44b13adf22f5e3f607d263aed23b4910d7e
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Sun Aug 12 01:39:16 2007 -0400
      
          cpuidle: Remove ACPI cstate_limit calls from ipw2100
      
          ipw2100 already has code to use accetable_latency interfaces to limit the
          C-state. Remove the calls to acpi_set_cstate_limit and acpi_get_cstate_limit
          as they are redundant.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit c649a76e76be6bff1fd770d0a775798813a3f6e0
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Sun Aug 12 01:35:39 2007 -0400
      
          cpuidle: compile fix for pause and resume functions
      
          Fix the compilation failure when cpuidle is not compiled in.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Acked-by: NAdam Belay <adam.belay@novell.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 2305a5920fb8ee6ccec1c62ade05aa8351091d71
      Author: Adam Belay <abelay@novell.com>
      Date:   Thu Jul 19 00:49:00 2007 -0400
      
          cpuidle: re-write
      
          Some portions have been rewritten to make the code cleaner and lighter
          weight.  The following is a list of changes:
      
          1.) the state name is now included in the sysfs interface
          2.) detection, hotplug, and available state modifications are handled by
          CPUIDLE drivers directly
          3.) the CPUIDLE idle handler is only ever installed when at least one
          cpuidle_device is enabled and ready
          4.) the menu governor BM code no longer overflows
          5.) the sysfs attributes are now printed as unsigned integers, avoiding
          negative values
          6.) a variety of other small cleanups
      
          Also, Idle drivers are no longer swappable during runtime through the
          CPUIDLE sysfs inteface.  On i386 and x86_64 most idle handlers (e.g.
          poll, mwait, halt, etc.) don't benefit from an infrastructure that
          supports multiple states, so I think using a more general case idle
          handler selection mechanism would be cleaner.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Acked-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Acked-by: NShaohua Li <shaohua.li@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit df25b6b56955714e6e24b574d88d1fd11f0c3ee5
      Author: Len Brown <len.brown@intel.com>
      Date:   Tue Jul 24 17:08:21 2007 -0400
      
          cpuidle: fix IA64 buid
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit fd6ada4c14488755ff7068860078c437431fbccd
      Author: Adrian Bunk <bunk@stusta.de>
      Date:   Mon Jul 9 11:33:13 2007 -0700
      
          cpuidle: static
      
          make cpuidle_replace_governor() static
      Signed-off-by: NAdrian Bunk <bunk@stusta.de>
          Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit c1d4a2cebcadf2429c0c72e1d29aa2a9684c32e0
      Author: Adrian Bunk <bunk@stusta.de>
      Date:   Tue Jul 3 00:54:40 2007 -0400
      
          cpuidle: static
      
          This patch makes the needlessly global struct menu_governor static.
      Signed-off-by: NAdrian Bunk <bunk@stusta.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit dbf8780c6e8d572c2c273da97ed1cca7608fd999
      Author: Andrew Morton <akpm@linux-foundation.org>
      Date:   Tue Jul 3 00:49:14 2007 -0400
      
          export symbol tick_nohz_get_sleep_length
      
          ERROR: "tick_nohz_get_sleep_length" [drivers/cpuidle/governors/menu.ko] undefined!
          ERROR: "tick_nohz_get_idle_jiffies" [drivers/cpuidle/governors/menu.ko] undefined!
      
          And please be sure to get your changes to core kernel suitably reviewed.
      
          Cc: Adam Belay <abelay@novell.com>
          Cc: Venki Pallipadi <venkatesh.pallipadi@intel.com>
          Cc: Ingo Molnar <mingo@elte.hu>
          Cc: Thomas Gleixner <tglx@linutronix.de>
          Cc: john stultz <johnstul@us.ibm.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 29f0e248e7017be15f99febf9143a2cef00b2961
      Author: Andrew Morton <akpm@linux-foundation.org>
      Date:   Tue Jul 3 00:43:04 2007 -0400
      
          tick.h needs hrtimer.h
      
          It uses hrtimers.
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit e40cede7d63a029e92712a3fe02faee60cc38fb4
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Jul 3 00:40:34 2007 -0400
      
          cpuidle: first round of documentation updates
      
          Documentation changes based on Pavel's feedback.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 83b42be2efece386976507555c29e7773a0dfcd1
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Jul 3 00:39:25 2007 -0400
      
          cpuidle: add rating to the governors and pick the one with highest rating by default
      
          Introduce a governor rating scheme to pick the right governor by default.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit d2a74b8c5e8f22def4709330d4bfc4a29209b71c
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Jul 3 00:38:08 2007 -0400
      
          cpuidle: make cpuidle sysfs driver governor switch off by default
      
          Make default cpuidle sysfs to show current_governor and current_driver in
          read-only mode.  More elaborate available_governors and available_drivers with
          writeable current_governor and current_driver interface only appear with
          "cpuidle_sysfs_switch" boot parameter.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 1f60a0e80bf83cf6b55c8845bbe5596ed8f6307b
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Jul 3 00:37:00 2007 -0400
      
          cpuidle: menu governor: change the early break condition
      
          Change the C-state early break out algorithm in menu governor.
      
          We only look at early breakouts that result in wakeups shorter than idle
          state's target_residency.  If such a breakout is frequent enough, eliminate
          the particular idle state upto a timeout period.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 45a42095cf64b003b4a69be3ce7f434f97d7af51
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Jul 3 00:35:38 2007 -0400
      
          cpuidle: fix uninitialized variable in sysfs routine
      
          Fix the uninitialized usage of ret.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 80dca7cdba3e6ee13eae277660873ab9584eb3be
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Jul 3 00:34:16 2007 -0400
      
          cpuidle: reenable /proc/acpi//power interface for the time being
      
          Keep /proc/acpi/processor/CPU*/power around for a while as powertop depends
          on it. It will be marked deprecated and removed in future. powertop can use
          cpuidle interfaces instead.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 589c37c2646c5e3813a51255a5ee1159cb4c33fc
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Jul 3 00:32:37 2007 -0400
      
          cpuidle: menu governor and hrtimer compile fix
      
          Compile fix for menu governor.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 0ba80bd9ab3ed304cb4f19b722e4cc6740588b5e
      Author: Len Brown <len.brown@intel.com>
      Date:   Thu May 31 22:51:43 2007 -0400
      
          cpuidle: build fix - cpuidle vs ipw2100 module
      
          ERROR: "acpi_set_cstate_limit" [drivers/net/wireless/ipw2100.ko] undefined!
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit d7d8fa7f96a7f7682be7c6cc0cc53fa7a18c3b58
      Author: Adam Belay <abelay@novell.com>
      Date:   Sat Mar 24 03:47:07 2007 -0400
      
          cpuidle: add the 'menu' governor
      
          Here is my first take at implementing an idle PM governor that takes
          full advantage of NO_HZ.  I call it the 'menu' governor because it
          considers the full list of idle states before each entry.
      
          I've kept the implementation fairly simple.  It attempts to guess the
          next residency time and then chooses a state that would meet at least
          the break-even point between power savings and entry cost.  To this end,
          it selects the deepest idle state that satisfies the following
          constraints:
               1. If the idle time elapsed since bus master activity was detected
                  is below a threshold (currently 20 ms), then limit the selection
                  to C2-type or above.
               2. Do not choose a state with a break-even residency that exceeds
                  the expected time remaining until the next timer interrupt.
               3. Do not choose a state with a break-even residency that exceeds
                  the elapsed time between the last pair of break events,
                  excluding timer interrupts.
      
          This governor has an advantage over "ladder" governor because it
          proactively checks how much time remains until the next timer interrupt
          using the tick infrastructure.  Also, it handles device interrupt
          activity more intelligently by not including timer interrupts in break
          event calculations.  Finally, it doesn't make policy decisions using the
          number of state entries, which can have variable residency times (NO_HZ
          makes these potentially very large), and instead only considers sleep
          time deltas.
      
          The menu governor can be selected during runtime using the cpuidle sysfs
          interface like so:
          "echo "menu" > /sys/devices/system/cpu/cpuidle/current_governor"
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit a4bec7e65aa3b7488b879d971651cc99a6c410fe
      Author: Adam Belay <abelay@novell.com>
      Date:   Sat Mar 24 03:47:03 2007 -0400
      
          cpuidle: export time until next timer interrupt using NO_HZ
      
          Expose information about the time remaining until the next
          timer interrupt expires by utilizing the dynticks infrastructure.
          Also modify the main idle loop to allow dynticks to handle
          non-interrupt break events (e.g. DMA).  Finally, expose sleep ticks
          information to external code.  Thomas Gleixner is responsible for much
          of the code in this patch.  However, I've made some additional changes,
          so I'm probably responsible if there are any bugs or oversights :)
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 2929d8996fbc77f41a5ff86bb67cdde3ca7d2d72
      Author: Adam Belay <abelay@novell.com>
      Date:   Sat Mar 24 03:46:58 2007 -0400
      
          cpuidle: governor API changes
      
          This patch prepares cpuidle for the menu governor.  It adds an optional
          stage after idle state entry to give the governor an opportunity to
          check why the state was exited.  Also it makes sure the idle loop
          returns after each state entry, allowing the appropriate dynticks code
          to run.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 3a7fd42f9825c3b03e364ca59baa751bb350775f
      Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Thu Apr 26 00:03:59 2007 -0700
      
          cpuidle: hang fix
      
          Prevent hang on x86-64, when ACPI processor driver is added as a module on
          a system that does not support C-states.
      
          x86-64 expects all idle handlers to enable interrupts before returning from
          idle handler.  This is due to enter_idle(), exit_idle() races.  Make
          cpuidle_idle_call() confirm to this when there is no pm_idle_old.
      
          Also, cpuidle look at the return values of attch_driver() and set
          current_driver to NULL if attach fails on all CPUs.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 4893339a142afbd5b7c01ffadfd53d14746e858e
      Author: Shaohua Li <shaohua.li@intel.com>
      Date:   Thu Apr 26 10:40:09 2007 +0800
      
          cpuidle: add support for max_cstate limit
      
          With CPUIDLE framework, the max_cstate (to limit max cpu c-state)
          parameter is ingored. Some systems require it to ignore C2/C3
          and some drivers like ipw require it too.
      Signed-off-by: NShaohua Li <shaohua.li@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 43bbbbe1cb998cbd2df656f55bb3bfe30f30e7d1
      Author: Shaohua Li <shaohua.li@intel.com>
      Date:   Thu Apr 26 10:40:13 2007 +0800
      
          cpuidle: add cpuidle_fore_redetect_devices API
      
          add cpuidle_force_redetect_devices API,
          which forces all CPU redetect idle states.
          Next patch will use it.
      Signed-off-by: NShaohua Li <shaohua.li@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit d1edadd608f24836def5ec483d2edccfb37b1d19
      Author: Shaohua Li <shaohua.li@intel.com>
      Date:   Thu Apr 26 10:40:01 2007 +0800
      
          cpuidle: fix sysfs related issue
      
          Fix the cpuidle sysfs issue.
          a. make kobject dynamicaly allocated
          b. fixed sysfs init issue to avoid suspend/resume issue
      Signed-off-by: NShaohua Li <shaohua.li@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 7169a5cc0d67b263978859672e86c13c23a5570d
      Author: Randy Dunlap <randy.dunlap@oracle.com>
      Date:   Wed Mar 28 22:52:53 2007 -0400
      
          cpuidle: 1-bit field must be unsigned
      
          A 1-bit bitfield has no room for a sign bit.
          drivers/cpuidle/governors/ladder.c:54:16: error: dubious bitfield without explicit `signed' or `unsigned'
      Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
          Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 4658620158dc2fbd9e4bcb213c5b6fb5d05ba7d4
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Wed Mar 28 22:52:41 2007 -0400
      
          cpuidle: fix boot hang
      
          Patch for cpuidle boot hang reported by Larry Finger here.
          http://www.ussg.iu.edu/hypermail/linux/kernel/0703.2/2025.htmlSigned-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
          Cc: Larry Finger <larry.finger@lwfinger.net>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit c17e168aa6e5fe3851baaae8df2fbc1cf11443a9
      Author: Len Brown <len.brown@intel.com>
      Date:   Wed Mar 7 04:37:53 2007 -0500
      
          cpuidle: ladder does not depend on ACPI
      
          build fix for CONFIG_ACPI=n
      
          In file included from drivers/cpuidle/governors/ladder.c:21:
          include/acpi/processor.h:88: error: expected specifier-qualifier-list before ‘acpi_integer’
          include/acpi/processor.h:106: error: expected specifier-qualifier-list before ‘acpi_integer’
          include/acpi/processor.h:168: error: expected specifier-qualifier-list before ‘acpi_handle’
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 8c91d958246bde68db0c3f0c57b535962ce861cb
      Author: Adrian Bunk <bunk@stusta.de>
      Date:   Tue Mar 6 02:29:40 2007 -0800
      
          cpuidle: make code static
      
          This patch makes the following needlessly global code static:
          - driver.c: __cpuidle_find_driver()
          - governor.c: __cpuidle_find_governor()
          - ladder.c: struct ladder_governor
      Signed-off-by: NAdrian Bunk <bunk@stusta.de>
          Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
          Cc: Adam Belay <abelay@novell.com>
          Cc: Shaohua Li <shaohua.li@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 0c39dc3187094c72c33ab65a64d2017b21f372d2
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Wed Mar 7 02:38:22 2007 -0500
      
          cpu_idle: fix build break
      
          This patch fixes a build breakage with !CONFIG_HOTPLUG_CPU and
          CONFIG_CPU_IDLE.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAdrian Bunk <bunk@stusta.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 8112e3b115659b07df340ef170515799c0105f82
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Tue Mar 6 02:29:39 2007 -0800
      
          cpuidle: build fix for !CPU_IDLE
      
          Fix the compile issues when CPU_IDLE is not configured.
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
          Cc: Adam Belay <abelay@novell.com>
          Cc: Shaohua Li <shaohua.li@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 1eb4431e9599cd25e0d9872f3c2c8986821839dd
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Thu Feb 22 13:54:57 2007 -0800
      
          cpuidle take2: Basic documentation for cpuidle
      
          Documentation for cpuidle infrastructure
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Signed-off-by: NShaohua Li <shaohua.li@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit ef5f15a8b79123a047285ec2e3899108661df779
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Thu Feb 22 13:54:03 2007 -0800
      
          cpuidle take2: Hookup ACPI C-states driver with cpuidle
      
          Hookup ACPI C-states onto generic cpuidle infrastructure.
      
          drivers/acpi/procesor_idle.c is now a ACPI C-states driver that registers as
          a driver in cpuidle infrastructure and the policy part is removed from
          drivers/acpi/processor_idle.c. We use governor in cpuidle instead.
      Signed-off-by: NShaohua Li <shaohua.li@intel.com>
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      
      commit 987196fa82d4db52c407e8c9d5dec884ba602183
      Author: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Date:   Thu Feb 22 13:52:57 2007 -0800
      
          cpuidle take2: Core cpuidle infrastructure
      
          Announcing 'cpuidle', a new CPU power management infrastructure to manage
          idle CPUs in a clean and efficient manner.
          cpuidle separates out the drivers that can provide support for multiple types
          of idle states and policy governors that decide on what idle state to use
          at run time.
          A cpuidle driver can support multiple idle states based on parameters like
          varying power consumption, wakeup latency, etc (ACPI C-states for example).
          A cpuidle governor can be usage model specific (laptop, server,
          laptop on battery etc).
          Main advantage of the infrastructure being, it allows independent development
          of drivers and governors and allows for better CPU power management.
      
          A huge thanks to Adam Belay and Shaohua Li who were part of this mini-project
          since its beginning and are greatly responsible for this patchset.
      
          This patch:
      
          Core cpuidle infrastructure.
          Introduces a new abstraction layer for cpuidle:
          * which manages drivers that can support multiple idles states. Drivers
            can be generic or particular to specific hardware/platform
          * allows pluging in multiple policy governors that can take idle state policy
            decision
          * The core also has a set of sysfs interfaces with which administrato can know
            about supported drivers and governors and switch them at run time.
      Signed-off-by: NAdam Belay <abelay@novell.com>
      Signed-off-by: NShaohua Li <shaohua.li@intel.com>
      Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      4f86d3a8
  15. 24 7月, 2007 1 次提交
  16. 22 7月, 2007 2 次提交
    • D
      x86_64: fake pxm-to-node mapping for fake numa · 3484d798
      David Rientjes 提交于
      For NUMA emulation, our SLIT should represent the true NUMA topology of the
      system but our proximity domain to node ID mapping needs to reflect the
      emulated state.
      
      When NUMA emulation has successfully setup fake nodes on the system, a new
      function, acpi_fake_nodes() is called.  This function determines the proximity
      domain (_PXM) for each true node found on the system.  It then finds which
      emulated nodes have been allocated on this true node as determined by its
      starting address.  The node ID to PXM mapping is changed so that each fake
      node ID points to the PXM of the true node that it is located on.
      
      If the machine failed to register a SLIT, then we assume there is no special
      requirement for emulated node affinity so we use the default LOCAL_DISTANCE,
      which is newly exported to this code, as our measurement if the emulated nodes
      appear in the same PXM.  Otherwise, we use REMOTE_DISTANCE.
      
      PXM_INVAL and NID_INVAL are also exported to the ACPI header file so that we
      can compare node_to_pxm() results in generic code (in this case, the SRAT
      code).
      
      Cc: Len Brown <lenb@kernel.org>
      Signed-off-by: NDavid Rientjes <rientjes@google.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NAndi Kleen <ak@suse.de>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      3484d798
    • D
      x86_64: various cleanups in NUMA scan node · ae2c6dcf
      David Rientjes 提交于
      In acpi_scan_nodes(), we immediately return -1 if acpi_numa <= 0, meaning
      we haven't detected any underlying ACPI topology or we have explicitly
      disabled its use from the command-line with numa=noacpi.
      
      acpi_table_print_srat_entry() and acpi_table_parse_srat() are only
      referenced within drivers/acpi/numa.c, so we can mark them as static and
      remove their prototypes from the header file.
      
      Likewise, pxm_to_node_map[] and node_to_pxm_map[] are only used within
      drivers/acpi/numa.c, so we mark them as static and remove their externs
      from the header file.
      
      The automatic 'result' variable is unused in acpi_numa_init(), so it's
      removed.
      Signed-off-by: NDavid Rientjes <rientjes@google.com>
      Signed-off-by: NAndi Kleen <ak@suse.de>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      ae2c6dcf
  17. 20 7月, 2007 2 次提交
  18. 10 5月, 2007 1 次提交
    • L
      acpi,msi-laptop: Fall back to EC polling mode for MSI laptop specific EC commands · 00eb43a1
      Lennart Poettering 提交于
      The ACPI EC that is used in MSI laptops knows some non-standard
      commands for changing the screen brighntess and a few other things,
      which are used by the msi-laptop.c driver. Unfortunately for these
      commands no GPE events for IBF and OBF are triggered. Since nowadays
      the EC code uses the ec_intr=1 mode by default, this causes these
      operations to timeout, although they don't fail. In result, all
      operations that you can do with the msi-laptop.c driver take more or
      less 1s to complete, which is awfully slow.
      
      In one of the more recent kernels (2.6.20?) the EC subsystem has been
      revamped. With that change the EC timeout has been increased. before
      that increase the MSI EC accesses were slow -- but not *that* slow,
      hence I took notice of this limitation of the MSI EC hardware only very
      recently.
      
      The standard EC operations on the MSI EC as defined in the ACPI spec
      support GPE events properly.
      
      The following patch adds a new argument "force_poll" to the
      ec_transaction() function (and friends). If set to 1, the function
      will poll for IBF/OBF even if ec_intr=1 is enabled. If set to 0 the
      current behaviour is used. The msi-laptop driver is modified to make
      use of this new flag, so that OBF/IBF is polled for the special MSI EC
      transactions -- but only for them.
      Signed-off-by: NLennart Poettering <mzxreary@0pointer.de>
      Acked-by: NAlexey Starikovskiy <aystarik@gmail.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      00eb43a1
  19. 13 2月, 2007 2 次提交
  20. 03 2月, 2007 5 次提交
  21. 05 1月, 2007 1 次提交
    • J
      ACPI: Altix: ACPI _PRT support · 3948ec94
      John Keller 提交于
      Provide ACPI _PRT support for SN Altix systems.
      
      The SN Altix platform does not conform to the
      IOSAPIC IRQ routing model, so a new acpi_irq_model
      (ACPI_IRQ_MODEL_PLATFORM) has been defined. The SN
      platform specific code sets acpi_irq_model to
      this new value, and keys off of it in acpi_register_gsi()
      to avoid the iosapic code path.
      Signed-off-by: NJohn Keller <jpk@sgi.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      3948ec94
  22. 14 10月, 2006 1 次提交
    • L
      ACPI: consolidate functions in acpi ec driver · d7a76e4c
      Lennart Poettering 提交于
      Unify the following functions:
      
          acpi_ec_poll_read()
          acpi_ec_poll_write()
          acpi_ec_poll_query()
          acpi_ec_intr_read()
          acpi_ec_intr_write()
          acpi_ec_intr_query()
      
      into:
      
          acpi_ec_poll_transaction()
          acpi_ec_intr_transaction()
      
      These new functions take as arguments an ACPI EC command, a few bytes
      to write to the EC data register and a buffer for a few bytes to read
      from the EC data register. The old _read(), _write(), _query() are
      just special cases of these functions.
      
      Then unified the code in acpi_ec_poll_transaction() and
      acpi_ec_intr_transaction() a little more. Both functions are now just
      wrappers around the new acpi_ec_transaction_unlocked() function. The
      latter contains the EC access logic, the two original
      function now just do their special way of locking and call the the
      new function for the actual work.
      
      This saves a lot of very similar code. The primary reason for doing
      this, however, is that my driver for MSI 270 laptops needs to issue
      some non-standard EC commands in a safe way. Due to this I added a new
      exported function similar to ec_write()/ec_write() which is called
      ec_transaction() and is essentially just a wrapper around
      acpi_ec_{poll,intr}_transaction().
      Signed-off-by: NLennart Poettering <mzxreary@0pointer.de>
      Acked-by: NLuming Yu <luming.yu@intel.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      d7a76e4c
  23. 28 6月, 2006 1 次提交
  24. 23 6月, 2006 1 次提交
  25. 26 4月, 2006 1 次提交
  26. 21 2月, 2006 1 次提交
    • P
      [PATCH] suspend-to-ram: allow video options to be set at runtime · c255d844
      Pavel Machek 提交于
      Currently, acpi video options can only be set on kernel command line.  That's
      little inflexible; I'd like userland s2ram application that just works, and
      modifying kernel command line according to whitelist is not fun.  It is better
      to just allow s2ram application to set video options just before suspend
      (according to the whitelist).
      
      This implements sysctl to allow setting suspend video options without reboot.
      
      (akpm: Documentation updates for this new sysctl are pending..)
      Signed-off-by: NPavel Machek <pavel@suse.cz>
      Cc: "Brown, Len" <len.brown@intel.com>
      Cc: "Antonino A. Daplas" <adaplas@pol.net>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      c255d844
  27. 10 12月, 2005 1 次提交
    • B
      [ACPI] ACPICA 20050930 · 50eca3eb
      Bob Moore 提交于
      Completed a major overhaul of the Resource Manager code -
      specifically, optimizations in the area of the AML/internal
      resource conversion code. The code has been optimized to
      simplify and eliminate duplicated code, CPU stack use has
      been decreased by optimizing function parameters and local
      variables, and naming conventions across the manager have
      been standardized for clarity and ease of maintenance (this
      includes function, parameter, variable, and struct/typedef
      names.)
      
      All Resource Manager dispatch and information tables have
      been moved to a single location for clarity and ease of
      maintenance. One new file was created, named "rsinfo.c".
      
      The ACPI return macros (return_ACPI_STATUS, etc.) have
      been modified to guarantee that the argument is
      not evaluated twice, making them less prone to macro
      side-effects. However, since there exists the possibility
      of additional stack use if a particular compiler cannot
      optimize them (such as in the debug generation case),
      the original macros are optionally available.  Note that
      some invocations of the return_VALUE macro may now cause
      size mismatch warnings; the return_UINT8 and return_UINT32
      macros are provided to eliminate these. (From Randy Dunlap)
      
      Implemented a new mechanism to enable debug tracing for
      individual control methods. A new external interface,
      acpi_debug_trace(), is provided to enable this mechanism. The
      intent is to allow the host OS to easily enable and disable
      tracing for problematic control methods. This interface
      can be easily exposed to a user or debugger interface if
      desired. See the file psxface.c for details.
      
      acpi_ut_callocate() will now return a valid pointer if a
      length of zero is specified - a length of one is used
      and a warning is issued. This matches the behavior of
      acpi_ut_allocate().
      Signed-off-by: NBob Moore <robert.moore@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      50eca3eb
  28. 26 8月, 2005 1 次提交
  29. 25 8月, 2005 2 次提交