• Len Brown's avatar
    cpuidle: consolidate 2.6.22 cpuidle branch into one patch · 4f86d3a8
    Len Brown authored
    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: default avatarLen 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: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Acked-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Acked-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Acked-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Acked-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Acked-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Acked-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Acked-by: default avatarAdam Belay <adam.belay@novell.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Acked-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Acked-by: default avatarShaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarLen 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: default avatarLen 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: default avatarAdrian Bunk <bunk@stusta.de>
        Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarAdrian Bunk <bunk@stusta.de>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarShaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarLen 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: default avatarShaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarLen 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: default avatarShaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarLen 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: default avatarRandy Dunlap <randy.dunlap@oracle.com>
        Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
        Cc: Larry Finger <larry.finger@lwfinger.net>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarLen 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: default avatarAdrian 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: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
        Cc: Adam Belay <abelay@novell.com>
        Cc: Shaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLen 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: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAdam Belay <abelay@novell.com>
    Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarLen 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: default avatarShaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarAdam Belay <abelay@novell.com>
    Signed-off-by: default avatarLen 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: default avatarAdam Belay <abelay@novell.com>
    Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
    Signed-off-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    4f86d3a8
acpi.h 5.74 KB