Merge commit 'v2.6.29-rc1' into tracing/urgent

2 files changed, 110 insertions, 77 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-regulator b/Documentation/ABI/testing/sysfs-class-regulator
index 3731f6f29bcb..873ef1fc1569 100644
--- a/Documentation/ABI/testing/sysfs-class-regulator
+++ b/Documentation/ABI/testing/sysfs-class-regulator
@@ -3,8 +3,9 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
-                state. This holds the regulator output state.
+                Some regulator directories will contain a field called
+                state. This reports the regulator enable status, for
+                regulators which can report that value.
 
                 This will be one of the following strings:
 
@@ -18,7 +19,8 @@ Description:
                 'disabled' means the regulator output is OFF and is not
                 supplying power to the system..
 
-                'unknown' means software cannot determine the state.
+                'unknown' means software cannot determine the state, or
+                the reported state is invalid.
 
                 NOTE: this field can be used in conjunction with microvolts
                 and microamps to determine regulator output levels.
@@ -53,9 +55,10 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 microvolts. This holds the regulator output voltage setting
-                measured in microvolts (i.e. E-6 Volts).
+                measured in microvolts (i.e. E-6 Volts), for regulators
+                which can report that voltage.
 
                 NOTE: This value should not be used to determine the regulator
                 output voltage level as this value is the same regardless of
@@ -67,9 +70,10 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 microamps. This holds the regulator output current limit
-                setting measured in microamps (i.e. E-6 Amps).
+                setting measured in microamps (i.e. E-6 Amps), for regulators
+                which can report that current.
 
                 NOTE: This value should not be used to determine the regulator
                 output current level as this value is the same regardless of
@@ -81,8 +85,9 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
-                opmode. This holds the regulator operating mode setting.
+                Some regulator directories will contain a field called
+                opmode. This holds the current regulator operating mode,
+                for regulators which can report it.
 
                 The opmode value can be one of the following strings:
 
@@ -92,7 +97,7 @@ Description:
                 'standby'
                 'unknown'
 
-                The modes are described in include/linux/regulator/regulator.h
+                The modes are described in include/linux/regulator/consumer.h
 
                 NOTE: This value should not be used to determine the regulator
                 output operating mode as this value is the same regardless of
@@ -104,9 +109,10 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 min_microvolts. This holds the minimum safe working regulator
-                output voltage setting for this domain measured in microvolts.
+                output voltage setting for this domain measured in microvolts,
+                for regulators which support voltage constraints.
 
                 NOTE: this will return the string 'constraint not defined' if
                 the power domain has no min microvolts constraint defined by
@@ -118,9 +124,10 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 max_microvolts. This holds the maximum safe working regulator
-                output voltage setting for this domain measured in microvolts.
+                output voltage setting for this domain measured in microvolts,
+                for regulators which support voltage constraints.
 
                 NOTE: this will return the string 'constraint not defined' if
                 the power domain has no max microvolts constraint defined by
@@ -132,10 +139,10 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 min_microamps. This holds the minimum safe working regulator
                 output current limit setting for this domain measured in
-                microamps.
+                microamps, for regulators which support current constraints.
 
                 NOTE: this will return the string 'constraint not defined' if
                 the power domain has no min microamps constraint defined by
@@ -147,10 +154,10 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 max_microamps. This holds the maximum safe working regulator
                 output current limit setting for this domain measured in
-                microamps.
+                microamps, for regulators which support current constraints.
 
                 NOTE: this will return the string 'constraint not defined' if
                 the power domain has no max microamps constraint defined by
@@ -185,7 +192,7 @@ Date:		April 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 requested_microamps. This holds the total requested load
                 current in microamps for this regulator from all its consumer
                 devices.
@@ -204,125 +211,102 @@ Date:		May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_mem_microvolts. This holds the regulator output
                 voltage setting for this domain measured in microvolts when
-                the system is suspended to memory.
-
-                NOTE: this will return the string 'not defined' if
-                the power domain has no suspend to memory voltage defined by
-                platform code.
+                the system is suspended to memory, for voltage regulators
+                implementing suspend voltage configuration constraints.
 
 What:           /sys/class/regulator/.../suspend_disk_microvolts
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_disk_microvolts. This holds the regulator output
                 voltage setting for this domain measured in microvolts when
-                the system is suspended to disk.
-
-                NOTE: this will return the string 'not defined' if
-                the power domain has no suspend to disk voltage defined by
-                platform code.
+                the system is suspended to disk, for voltage regulators
+                implementing suspend voltage configuration constraints.
 
 What:           /sys/class/regulator/.../suspend_standby_microvolts
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_standby_microvolts. This holds the regulator output
                 voltage setting for this domain measured in microvolts when
-                the system is suspended to standby.
-
-                NOTE: this will return the string 'not defined' if
-                the power domain has no suspend to standby voltage defined by
-                platform code.
+                the system is suspended to standby, for voltage regulators
+                implementing suspend voltage configuration constraints.
 
 What:           /sys/class/regulator/.../suspend_mem_mode
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_mem_mode. This holds the regulator operating mode
                 setting for this domain when the system is suspended to
-                memory.
-
-                NOTE: this will return the string 'not defined' if
-                the power domain has no suspend to memory mode defined by
-                platform code.
+                memory, for regulators implementing suspend mode
+                configuration constraints.
 
 What:           /sys/class/regulator/.../suspend_disk_mode
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_disk_mode. This holds the regulator operating mode
-                setting for this domain when the system is suspended to disk.
-
-                NOTE: this will return the string 'not defined' if
-                the power domain has no suspend to disk mode defined by
-                platform code.
+                setting for this domain when the system is suspended to disk,
+                for regulators implementing suspend mode configuration
+                constraints.
 
 What:           /sys/class/regulator/.../suspend_standby_mode
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_standby_mode. This holds the regulator operating mode
                 setting for this domain when the system is suspended to
-                standby.
-
-                NOTE: this will return the string 'not defined' if
-                the power domain has no suspend to standby mode defined by
-                platform code.
+                standby, for regulators implementing suspend mode
+                configuration constraints.
 
 What:           /sys/class/regulator/.../suspend_mem_state
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_mem_state. This holds the regulator operating state
-                when suspended to memory.
-
-                This will be one of the following strings:
+                when suspended to memory, for regulators implementing suspend
+                configuration constraints.
 
-                'enabled'
-                'disabled'
-                'not defined'
+                This will be one of the same strings reported by
+                the "state" attribute.
 
 What:           /sys/class/regulator/.../suspend_disk_state
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_disk_state. This holds the regulator operating state
-                when suspended to disk.
-
-                This will be one of the following strings:
+                when suspended to disk, for regulators implementing
+                suspend configuration constraints.
 
-                'enabled'
-                'disabled'
-                'not defined'
+                This will be one of the same strings reported by
+                the "state" attribute.
 
 What:           /sys/class/regulator/.../suspend_standby_state
 Date:           May 2008
 KernelVersion:  2.6.26
 Contact:        Liam Girdwood <lrg@slimlogic.co.uk>
 Description:
-                Each regulator directory will contain a field called
+                Some regulator directories will contain a field called
                 suspend_standby_state. This holds the regulator operating
-                state when suspended to standby.
-
-                This will be one of the following strings:
+                state when suspended to standby, for regulators implementing
+                suspend configuration constraints.
 
-                'enabled'
-                'disabled'
-                'not defined'
+                This will be one of the same strings reported by
+                the "state" attribute.
diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory
index 7a16fe1e2270..9fe91c02ee40 100644
--- a/Documentation/ABI/testing/sysfs-devices-memory
+++ b/Documentation/ABI/testing/sysfs-devices-memory
@@ -6,7 +6,6 @@ Description:
                 internal state of the kernel memory blocks. Files could be
                 added or removed dynamically to represent hot-add/remove
                 operations.
-
 Users:          hotplug memory add/remove tools
                 https://w3.opensource.ibm.com/projects/powerpc-utils/
 
@@ -19,6 +18,56 @@ Description:
                 This is useful for a user-level agent to determine
                 identify removable sections of the memory before attempting
                 potentially expensive hot-remove memory operation
+Users:          hotplug memory remove tools
+                https://w3.opensource.ibm.com/projects/powerpc-utils/
+
+What:           /sys/devices/system/memory/memoryX/phys_device
+Date:           September 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The file /sys/devices/system/memory/memoryX/phys_device
+                is read-only and is designed to show the name of physical
+                memory device.  Implementation is currently incomplete.
 
+What:           /sys/devices/system/memory/memoryX/phys_index
+Date:           September 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The file /sys/devices/system/memory/memoryX/phys_index
+                is read-only and contains the section ID in hexadecimal
+                which is equivalent to decimal X contained in the
+                memory section directory name.
+
+What:           /sys/devices/system/memory/memoryX/state
+Date:           September 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The file /sys/devices/system/memory/memoryX/state
+                is read-write.  When read, it's contents show the
+                online/offline state of the memory section.  When written,
+                root can toggle the the online/offline state of a removable
+                memory section (see removable file description above)
+                using the following commands.
+                # echo online > /sys/devices/system/memory/memoryX/state
+                # echo offline > /sys/devices/system/memory/memoryX/state
+
+                For example, if /sys/devices/system/memory/memory22/removable
+                contains a value of 1 and
+                /sys/devices/system/memory/memory22/state contains the
+                string "online" the following command can be executed by
+                by root to offline that section.
+                # echo offline > /sys/devices/system/memory/memory22/state
 Users:          hotplug memory remove tools
                 https://w3.opensource.ibm.com/projects/powerpc-utils/
+
+What:           /sys/devices/system/node/nodeX/memoryY
+Date:           September 2008
+Contact:        Gary Hade <garyhade@us.ibm.com>
+Description:
+                When CONFIG_NUMA is enabled
+                /sys/devices/system/node/nodeX/memoryY is a symbolic link that
+                points to the corresponding /sys/devices/system/memory/memoryY
+                memory section directory.  For example, the following symbolic
+                link is created for memory section 9 on node0.
+                /sys/devices/system/node/node0/memory9 -> ../../memory/memory9
+