--- /dev/null
+What: /sys/kernel/slab
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The /sys/kernel/slab directory contains a snapshot of the
+ internal state of the SLUB allocator for each cache. Certain
+ files may be modified to change the behavior of the cache (and
+ any cache it aliases, if any).
+Users: kernel memory tuning tools
+
+What: /sys/kernel/slab/cache/aliases
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The aliases file is read-only and specifies how many caches
+ have merged into this cache.
+
+What: /sys/kernel/slab/cache/align
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The align file is read-only and specifies the cache's object
+ alignment in bytes.
+
+What: /sys/kernel/slab/cache/alloc_calls
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_calls file is read-only and lists the kernel code
+ locations from which allocations for this cache were performed.
+ The alloc_calls file only contains information if debugging is
+ enabled for that cache (see Documentation/vm/slub.txt).
+
+What: /sys/kernel/slab/cache/alloc_fastpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_fastpath file is read-only and specifies how many
+ objects have been allocated using the fast path.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_from_partial
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_from_partial file is read-only and specifies how
+ many times a cpu slab has been full and it has been refilled
+ by using a slab from the list of partially used slabs.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_refill
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_refill file is read-only and specifies how many
+ times the per-cpu freelist was empty but there were objects
+ available as the result of remote cpu frees.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_slab
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_slab file is read-only and specifies how many times
+ a new slab had to be allocated from the page allocator.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/alloc_slowpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The alloc_slowpath file is read-only and specifies how many
+ objects have been allocated using the slow path because of a
+ refill or allocation from a partial or new slab.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/cache_dma
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The cache_dma file is read-only and specifies whether objects
+ are from ZONE_DMA.
+ Available when CONFIG_ZONE_DMA is enabled.
+
+What: /sys/kernel/slab/cache/cpu_slabs
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The cpu_slabs file is read-only and displays how many cpu slabs
+ are active and their NUMA locality.
+
+What: /sys/kernel/slab/cache/cpuslab_flush
+Date: April 2009
+KernelVersion: 2.6.31
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file cpuslab_flush is read-only and specifies how many
+ times a cache's cpu slabs have been flushed as the result of
+ destroying or shrinking a cache, a cpu going offline, or as
+ the result of forcing an allocation from a certain node.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/ctor
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The ctor file is read-only and specifies the cache's object
+ constructor function, which is invoked for each object when a
+ new slab is allocated.
+
+What: /sys/kernel/slab/cache/deactivate_empty
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file deactivate_empty is read-only and specifies how many
+ times an empty cpu slab was deactivated.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_full
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file deactivate_full is read-only and specifies how many
+ times a full cpu slab was deactivated.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_remote_frees
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file deactivate_remote_frees is read-only and specifies how
+ many times a cpu slab has been deactivated and contained free
+ objects that were freed remotely.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_to_head
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file deactivate_to_head is read-only and specifies how
+ many times a partial cpu slab was deactivated and added to the
+ head of its node's partial list.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/deactivate_to_tail
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file deactivate_to_tail is read-only and specifies how
+ many times a partial cpu slab was deactivated and added to the
+ tail of its node's partial list.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/destroy_by_rcu
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The destroy_by_rcu file is read-only and specifies whether
+ slabs (not objects) are freed by rcu.
+
+What: /sys/kernel/slab/cache/free_add_partial
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file free_add_partial is read-only and specifies how many
+ times an object has been freed in a full slab so that it had to
+ added to its node's partial list.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_calls
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_calls file is read-only and lists the locations of
+ object frees if slab debugging is enabled (see
+ Documentation/vm/slub.txt).
+
+What: /sys/kernel/slab/cache/free_fastpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_fastpath file is read-only and specifies how many
+ objects have been freed using the fast path because it was an
+ object from the cpu slab.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_frozen
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_frozen file is read-only and specifies how many
+ objects have been freed to a frozen slab (i.e. a remote cpu
+ slab).
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_remove_partial
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file free_remove_partial is read-only and specifies how
+ many times an object has been freed to a now-empty slab so
+ that it had to be removed from its node's partial list.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_slab
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_slab file is read-only and specifies how many times an
+ empty slab has been freed back to the page allocator.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/free_slowpath
+Date: February 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The free_slowpath file is read-only and specifies how many
+ objects have been freed using the slow path (i.e. to a full or
+ partial slab).
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/hwcache_align
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The hwcache_align file is read-only and specifies whether
+ objects are aligned on cachelines.
+
+What: /sys/kernel/slab/cache/min_partial
+Date: February 2009
+KernelVersion: 2.6.30
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ David Rientjes <rientjes@google.com>
+Description:
+ The min_partial file specifies how many empty slabs shall
+ remain on a node's partial list to avoid the overhead of
+ allocating new slabs. Such slabs may be reclaimed by utilizing
+ the shrink file.
+
+What: /sys/kernel/slab/cache/object_size
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The object_size file is read-only and specifies the cache's
+ object size.
+
+What: /sys/kernel/slab/cache/objects
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The objects file is read-only and displays how many objects are
+ active and from which nodes they are from.
+
+What: /sys/kernel/slab/cache/objects_partial
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The objects_partial file is read-only and displays how many
+ objects are on partial slabs and from which nodes they are
+ from.
+
+What: /sys/kernel/slab/cache/objs_per_slab
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file objs_per_slab is read-only and specifies how many
+ objects may be allocated from a single slab of the order
+ specified in /sys/kernel/slab/cache/order.
+
+What: /sys/kernel/slab/cache/order
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The order file specifies the page order at which new slabs are
+ allocated. It is writable and can be changed to increase the
+ number of objects per slab. If a slab cannot be allocated
+ because of fragmentation, SLUB will retry with the minimum order
+ possible depending on its characteristics.
+
+What: /sys/kernel/slab/cache/order_fallback
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file order_fallback is read-only and specifies how many
+ times an allocation of a new slab has not been possible at the
+ cache's order and instead fallen back to its minimum possible
+ order.
+ Available when CONFIG_SLUB_STATS is enabled.
+
+What: /sys/kernel/slab/cache/partial
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The partial file is read-only and displays how long many
+ partial slabs there are and how long each node's list is.
+
+What: /sys/kernel/slab/cache/poison
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The poison file specifies whether objects should be poisoned
+ when a new slab is allocated.
+
+What: /sys/kernel/slab/cache/reclaim_account
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The reclaim_account file specifies whether the cache's objects
+ are reclaimable (and grouped by their mobility).
+
+What: /sys/kernel/slab/cache/red_zone
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The red_zone file specifies whether the cache's objects are red
+ zoned.
+
+What: /sys/kernel/slab/cache/remote_node_defrag_ratio
+Date: January 2008
+KernelVersion: 2.6.25
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The file remote_node_defrag_ratio specifies the percentage of
+ times SLUB will attempt to refill the cpu slab with a partial
+ slab from a remote node as opposed to allocating a new slab on
+ the local node. This reduces the amount of wasted memory over
+ the entire system but can be expensive.
+ Available when CONFIG_NUMA is enabled.
+
+What: /sys/kernel/slab/cache/sanity_checks
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The sanity_checks file specifies whether expensive checks
+ should be performed on free and, at minimum, enables double free
+ checks. Caches that enable sanity_checks cannot be merged with
+ caches that do not.
+
+What: /sys/kernel/slab/cache/shrink
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The shrink file is written when memory should be reclaimed from
+ a cache. Empty partial slabs are freed and the partial list is
+ sorted so the slabs with the fewest available objects are used
+ first.
+
+What: /sys/kernel/slab/cache/slab_size
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The slab_size file is read-only and specifies the object size
+ with metadata (debugging information and alignment) in bytes.
+
+What: /sys/kernel/slab/cache/slabs
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The slabs file is read-only and displays how long many slabs
+ there are (both cpu and partial) and from which nodes they are
+ from.
+
+What: /sys/kernel/slab/cache/store_user
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The store_user file specifies whether the location of
+ allocation or free should be tracked for a cache.
+
+What: /sys/kernel/slab/cache/total_objects
+Date: April 2008
+KernelVersion: 2.6.26
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The total_objects file is read-only and displays how many total
+ objects a cache has and from which nodes they are from.
+
+What: /sys/kernel/slab/cache/trace
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ The trace file specifies whether object allocations and frees
+ should be traced.
+
+What: /sys/kernel/slab/cache/validate
+Date: May 2007
+KernelVersion: 2.6.22
+Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
+ Christoph Lameter <cl@linux-foundation.org>
+Description:
+ Writing to the validate file causes SLUB to traverse all of its
+ cache's objects and check the validity of metadata.
seriously wrong while debugging, it will most often be the case
that you want to enable gdb to be verbose about its target
communications. You do this prior to issuing the <constant>target
- remote</constant> command by typing in: <constant>set remote debug 1</constant>
+ remote</constant> command by typing in: <constant>set debug remote 1</constant>
</para>
</chapter>
<chapter id="KGDBTestSuite">
Author:
Christoph Rohland <cr@sap.com>, 1.12.01
Updated:
- Hugh Dickins <hugh@veritas.com>, 4 June 2007
+ Hugh Dickins, 4 June 2007
Unit: revolution/min (RPM)
RW
+fan[1-*]_max Fan maximum value
+ Unit: revolution/min (RPM)
+ Only rarely supported by the hardware.
+ RW
+
fan[1-*]_input Fan input value.
Unit: revolution/min (RPM)
RO
in[0-*]_min_alarm
in[0-*]_max_alarm
fan[1-*]_min_alarm
+fan[1-*]_max_alarm
temp[1-*]_min_alarm
temp[1-*]_max_alarm
temp[1-*]_crit_alarm
Anonymous finger details are sent sequentially as separate packets of ABS
events. Only the ABS_MT events are recognized as part of a finger
packet. The end of a packet is marked by calling the input_mt_sync()
-function, which generates a SYN_MT_REPORT event. The end of multi-touch
-transfer is marked by calling the usual input_sync() function.
+function, which generates a SYN_MT_REPORT event. This instructs the
+receiver to accept the data for the current finger and prepare to receive
+another. The end of a multi-touch transfer is marked by calling the usual
+input_sync() function. This instructs the receiver to act upon events
+accumulated since last EV_SYN/SYN_REPORT and prepare to receive a new
+set of events/packets.
A set of ABS_MT events with the desired properties is defined. The events
are divided into categories, to allow for partial implementation. The
ABS_MT_POSITION_Y, which allows for multiple fingers to be tracked. If the
device supports it, the ABS_MT_WIDTH_MAJOR may be used to provide the size
of the approaching finger. Anisotropy and direction may be specified with
-ABS_MT_TOUCH_MINOR, ABS_MT_WIDTH_MINOR and ABS_MT_ORIENTATION. Devices with
-more granular information may specify general shapes as blobs, i.e., as a
-sequence of rectangular shapes grouped together by an
-ABS_MT_BLOB_ID. Finally, the ABS_MT_TOOL_TYPE may be used to specify
-whether the touching tool is a finger or a pen or something else.
+ABS_MT_TOUCH_MINOR, ABS_MT_WIDTH_MINOR and ABS_MT_ORIENTATION. The
+ABS_MT_TOOL_TYPE may be used to specify whether the touching tool is a
+finger or a pen or something else. Devices with more granular information
+may specify general shapes as blobs, i.e., as a sequence of rectangular
+shapes grouped together by an ABS_MT_BLOB_ID. Finally, for the few devices
+that currently support it, the ABS_MT_TRACKING_ID event may be used to
+report finger tracking from hardware [5].
+
+Here is what a minimal event sequence for a two-finger touch would look
+like:
+
+ ABS_MT_TOUCH_MAJOR
+ ABS_MT_POSITION_X
+ ABS_MT_POSITION_Y
+ SYN_MT_REPORT
+ ABS_MT_TOUCH_MAJOR
+ ABS_MT_POSITION_X
+ ABS_MT_POSITION_Y
+ SYN_MT_REPORT
+ SYN_REPORT
Event Semantics
The length of the major axis of the contact. The length should be given in
surface units. If the surface has an X times Y resolution, the largest
-possible value of ABS_MT_TOUCH_MAJOR is sqrt(X^2 + Y^2), the diagonal.
+possible value of ABS_MT_TOUCH_MAJOR is sqrt(X^2 + Y^2), the diagonal [4].
ABS_MT_TOUCH_MINOR
The length, in surface units, of the minor axis of the contact. If the
-contact is circular, this event can be omitted.
+contact is circular, this event can be omitted [4].
ABS_MT_WIDTH_MAJOR
The length, in surface units, of the major axis of the approaching
tool. This should be understood as the size of the tool itself. The
orientation of the contact and the approaching tool are assumed to be the
-same.
+same [4].
ABS_MT_WIDTH_MINOR
The length, in surface units, of the minor axis of the approaching
-tool. Omit if circular.
+tool. Omit if circular [4].
The above four values can be used to derive additional information about
the contact. The ratio ABS_MT_TOUCH_MAJOR / ABS_MT_WIDTH_MAJOR approximates
ABS_MT_ORIENTATION
-The orientation of the ellipse. The value should describe half a revolution
-clockwise around the touch center. The scale of the value is arbitrary, but
-zero should be returned for an ellipse aligned along the Y axis of the
-surface. As an example, an index finger placed straight onto the axis could
-return zero orientation, something negative when twisted to the left, and
-something positive when twisted to the right. This value can be omitted if
-the touching object is circular, or if the information is not available in
-the kernel driver.
+The orientation of the ellipse. The value should describe a signed quarter
+of a revolution clockwise around the touch center. The signed value range
+is arbitrary, but zero should be returned for a finger aligned along the Y
+axis of the surface, a negative value when finger is turned to the left, and
+a positive value when finger turned to the right. When completely aligned with
+the X axis, the range max should be returned. Orientation can be omitted
+if the touching object is circular, or if the information is not available
+in the kernel driver. Partial orientation support is possible if the device
+can distinguish between the two axis, but not (uniquely) any values in
+between. In such cases, the range of ABS_MT_ORIENTATION should be [0, 1]
+[4].
ABS_MT_POSITION_X
The BLOB_ID groups several packets together into one arbitrarily shaped
contact. This is a low-level anonymous grouping, and should not be confused
-with the high-level contactID, explained below. Most kernel drivers will
-not have this capability, and can safely omit the event.
+with the high-level trackingID [5]. Most kernel drivers will not have blob
+capability, and can safely omit the event.
+
+ABS_MT_TRACKING_ID
+
+The TRACKING_ID identifies an initiated contact throughout its life cycle
+[5]. There are currently only a few devices that support it, so this event
+should normally be omitted.
+
+
+Event Computation
+-----------------
+
+The flora of different hardware unavoidably leads to some devices fitting
+better to the MT protocol than others. To simplify and unify the mapping,
+this section gives recipes for how to compute certain events.
+
+For devices reporting contacts as rectangular shapes, signed orientation
+cannot be obtained. Assuming X and Y are the lengths of the sides of the
+touching rectangle, here is a simple formula that retains the most
+information possible:
+
+ ABS_MT_TOUCH_MAJOR := max(X, Y)
+ ABS_MT_TOUCH_MINOR := min(X, Y)
+ ABS_MT_ORIENTATION := bool(X > Y)
+
+The range of ABS_MT_ORIENTATION should be set to [0, 1], to indicate that
+the device can distinguish between a finger along the Y axis (0) and a
+finger along the X axis (1).
Finger Tracking
anonymous contacts currently on the surface. The order in which the packets
appear in the event stream is not important.
-The process of finger tracking, i.e., to assign a unique contactID to each
+The process of finger tracking, i.e., to assign a unique trackingID to each
initiated contact on the surface, is left to user space; preferably the
-multi-touch X driver [3]. In that driver, the contactID stays the same and
+multi-touch X driver [3]. In that driver, the trackingID stays the same and
unique until the contact vanishes (when the finger leaves the surface). The
problem of assigning a set of anonymous fingers to a set of identified
fingers is a euclidian bipartite matching problem at each event update, and
relies on a sufficiently rapid update rate.
+There are a few devices that support trackingID in hardware. User space can
+make use of these native identifiers to reduce bandwidth and cpu usage.
+
+
Notes
-----
time of writing (April 2009), the MT protocol is not yet merged, and the
prototype implements finger matching, basic mouse support and two-finger
scrolling. The project aims at improving the quality of current multi-touch
-functionality available in the synaptics X driver, and in addition
+functionality available in the Synaptics X driver, and in addition
implement more advanced gestures.
+[4] See the section on event computation.
+[5] See the section on finger tracking.
register save and restore. The kernel will only save
legacy floating-point registers on task switch.
+ noxsave [BUGS=X86] Disables x86 extended register state save
+ and restore using xsave. The kernel will fallback to
+ enabling legacy floating-point and sse state.
+
nohlt [BUGS=ARM,SH] Tells the kernel that the sleep(SH) or
wfi(ARM) instruction doesn't work correctly and not to
use it. This is also useful when using JTAG debugger.
sctp_wmem - vector of 3 INTEGERs: min, default, max
See tcp_wmem for a description.
-UNDOCUMENTED:
/proc/sys/net/core/*
- dev_weight FIXME
+dev_weight - INTEGER
+ The maximum number of packets that kernel can handle on a NAPI
+ interrupt, it's a Per-CPU variable.
+
+ Default: 64
/proc/sys/net/unix/*
- max_dgram_qlen FIXME
+max_dgram_qlen - INTEGER
+ The maximum length of dgram socket receive queue
+
+ Default: 10
+
+
+UNDOCUMENTED:
/proc/sys/net/irda/*
fast_poll_increase FIXME
The power-management is supported.
+ Module snd-ctxfi
+ ----------------
+
+ Module for Creative Sound Blaster X-Fi boards (20k1 / 20k2 chips)
+ * Creative Sound Blaster X-Fi Titanium Fatal1ty Champion Series
+ * Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series
+ * Creative Sound Blaster X-Fi Titanium Professional Audio
+ * Creative Sound Blaster X-Fi Titanium
+ * Creative Sound Blaster X-Fi Elite Pro
+ * Creative Sound Blaster X-Fi Platinum
+ * Creative Sound Blaster X-Fi Fatal1ty
+ * Creative Sound Blaster X-Fi XtremeGamer
+ * Creative Sound Blaster X-Fi XtremeMusic
+
+ reference_rate - reference sample rate, 44100 or 48000 (default)
+ multiple - multiple to ref. sample rate, 1 or 2 (default)
+
+ This module supports multiple cards.
+
Module snd-darla20
------------------
acer Acer TravelMate
will Will laptops (PB V7900)
replacer Replacer 672V
+ favorit100 Maxdata Favorit 100XS
basic fixed pin assignment (old default model)
test for testing/debugging purpose, almost all controls can
adjusted. Appearing only when compiled with
eeepc-p703 ASUS Eeepc P703 P900A
eeepc-p901 ASUS Eeepc P901 S101
fujitsu FSC Amilo
+ lifebook Fujitsu Lifebook S6420
auto auto-config reading BIOS (default)
-ALC662/663
-==========
+ALC662/663/272
+==============
3stack-dig 3-stack (2-channel) with SPDIF
3stack-6ch 3-stack (6-channel)
3stack-6ch-dig 3-stack (6-channel) with SPDIF
asus-mode4 ASUS
asus-mode5 ASUS
asus-mode6 ASUS
+ dell Dell with ALC272
+ dell-zm1 Dell ZM1 with ALC272
+ samsung-nc10 Samsung NC10 mini notebook
auto auto-config reading BIOS (default)
ALC882/885
asus-a7j ASUS A7J
asus-a7m ASUS A7M
macpro MacPro support
+ mb5 Macbook 5,1
mbp3 Macbook Pro rev3
imac24 iMac 24'' with jack detection
w2jc ASUS W2JC
acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
acer-aspire Acer Aspire 9810
acer-aspire-4930g Acer Aspire 4930G
+ acer-aspire-8930g Acer Aspire 8930G
medion Medion Laptops
medion-md2 Medion MD2
targa-dig Targa/MSI
- targa-2ch-dig Targs/MSI with 2-channel
+ targa-2ch-dig Targa/MSI with 2-channel
+ targa-8ch-dig Targa/MSI with 8-channel (MSI GX620)
laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
lenovo-101e Lenovo 101E
lenovo-nb0763 Lenovo NB0763
fujitsu-pi2515 Fujitsu AMILO Pi2515
fujitsu-xa3530 Fujitsu AMILO XA3530
3stack-6ch-intel Intel DG33* boards
+ asus-p5q ASUS P5Q-EM boards
+ mb31 MacBook 3,1
+ sony-vaio-tt Sony VAIO TT
auto auto-config reading BIOS (default)
ALC861/660
ref-no-jd Reference board without HP/Mic jack detection
3stack D965 3stack
5stack D965 5stack + SPDIF
+ 5stack-no-fp D965 5stack without front panel
dell-3stack Dell Dimension E520
dell-bios Fixes with Dell BIOS setup
auto BIOS setup (default)
hp-m4 HP mini 1000
hp-dv5 HP dv series
hp-hdx HP HDX series
+ hp-dv4-1222nr HP dv4-1222nr (with LED support)
auto BIOS setup (default)
STAC92HD73*
When this value is greater than 1, the driver will show the
stack trace additionally. This may help the debugging.
+ Since 2.6.30, this option also enables the hwptr check using
+ jiffies. This detects spontaneous invalid pointer callback
+ values, but can be lead to too much corrections for a (mostly
+ buggy) hardware that doesn't give smooth pointer updates.
+
card*/pcm*/sub*/info
The general information of this PCM sub-stream.
o Mic - Mic (and optional Jack)
o Line - Line Input/Output (and optional Jack)
o Speaker - Speaker
+ o Supply - Power or clock supply widget used by other widgets.
o Pre - Special PRE widget (exec before all others)
o Post - Special POST widget (exec after all others)
- nr_hugepages
- nr_overcommit_hugepages
- nr_pdflush_threads
-- nr_pdflush_threads_min
-- nr_pdflush_threads_max
- nr_trim_pages (only if CONFIG_MMU=n)
- numa_zonelist_order
- oom_dump_tasks
==============================================================
-nr_pdflush_threads_min
-
-This value controls the minimum number of pdflush threads.
-
-At boot time, the kernel will create and maintain 'nr_pdflush_threads_min'
-threads for the kernel's lifetime.
-
-The default value is 2. The minimum value you can specify is 1, and
-the maximum value is the current setting of 'nr_pdflush_threads_max'.
-
-See 'nr_pdflush_threads_max' below for more information.
-
-==============================================================
-
-nr_pdflush_threads_max
-
-This value controls the maximum number of pdflush threads that can be
-created. The pdflush algorithm will create a new pdflush thread (up to
-this maximum) if no pdflush threads have been available for >= 1 second.
-
-The default value is 8. The minimum value you can specify is the
-current value of 'nr_pdflush_threads_min' and the
-maximum is 1000.
-
-==============================================================
-
overcommit_memory:
This value contains a flag that enables memory overcommitment.
"devices" directory at /sys/subsystem/<name>/devices.
If /sys/subsystem exists, /sys/bus, /sys/class and /sys/block can be
- ignored. If it does not exist, you have always to scan all three
+ ignored. If it does not exist, you always have to scan all three
places, as the kernel is free to move a subsystem from one place to
the other, as long as the devices are still reachable by the same
subsystem name.
AMD GEODE CS5536 USB DEVICE CONTROLLER DRIVER
P: Thomas Dahlmann
-M: thomas.dahlmann@amd.com
+M: dahlmann.thomas@arcor.de
L: linux-geode@lists.infradead.org (moderated for non-subscribers)
S: Supported
F: drivers/usb/gadget/amd5536udc.*
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
T: git git://gitorious.org/linux-gemini/mainline.git
S: Maintained
+F: arch/arm/mach-gemini/
ARM/EBSA110 MACHINE SUPPORT
P: Russell King
M: paulius.zaleckas@teltonika.lt
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
S: Maintained
+F: arch/arm/mm/*-fa*
ARM/FOOTBRIDGE ARCHITECTURE
P: Russell King
F: include/linux/bfs_fs.h
BLACKFIN ARCHITECTURE
-P: Bryan Wu
-M: cooloney@kernel.org
+P: Mike Frysinger
+M: vapier@gentoo.org
L: uclinux-dist-devel@blackfin.uclinux.org
W: http://blackfin.uclinux.org
S: Supported
F: arch/blackfin/
BLACKFIN EMAC DRIVER
-P: Bryan Wu
-M: cooloney@kernel.org
-L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
+P: Michael Hennerich
+M: michael.hennerich@analog.com
+L: uclinux-dist-devel@blackfin.uclinux.org
W: http://blackfin.uclinux.org
S: Supported
F: drivers/net/bfin_mac.*
BLACKFIN RTC DRIVER
P: Mike Frysinger
M: vapier.adi@gmail.com
-L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
+L: uclinux-dist-devel@blackfin.uclinux.org
W: http://blackfin.uclinux.org
S: Supported
F: drivers/rtc/rtc-bfin.c
BLACKFIN SERIAL DRIVER
P: Sonic Zhang
M: sonic.zhang@analog.com
-L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
+L: uclinux-dist-devel@blackfin.uclinux.org
W: http://blackfin.uclinux.org
S: Supported
F: drivers/serial/bfin_5xx.c
BLACKFIN WATCHDOG DRIVER
P: Mike Frysinger
M: vapier.adi@gmail.com
-L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
+L: uclinux-dist-devel@blackfin.uclinux.org
W: http://blackfin.uclinux.org
S: Supported
F: drivers/watchdog/bfin_wdt.c
BLACKFIN I2C TWI DRIVER
P: Sonic Zhang
M: sonic.zhang@analog.com
-L: uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
+L: uclinux-dist-devel@blackfin.uclinux.org
W: http://blackfin.uclinux.org/
S: Supported
F: drivers/i2c/busses/i2c-bfin-twi.c
M: linux@arm.linux.org.uk
F: include/linux/clk.h
+CISCO FCOE HBA DRIVER
+P: Abhijeet Joglekar
+M: abjoglek@cisco.com
+P: Joe Eykholt
+M: jeykholt@cisco.com
+L: linux-scsi@vger.kernel.org
+S: Supported
+
CODA FILE SYSTEM
P: Jan Harkes
M: jaharkes@cs.cmu.edu
S: Maintained
F: drivers/net/wan/cosa*
+CPMAC ETHERNET DRIVER
+P: Florian Fainelli
+M: florian@openwrt.org
+L: netdev@vger.kernel.org
+S: Maintained
+F: drivers/net/cpmac.c
+
CPU FREQUENCY DRIVERS
P: Dave Jones
M: davej@redhat.com
EDAC-E752X
P: Mark Gross
-P: Doug Thompson
M: mark.gross@intel.com
+P: Doug Thompson
M: dougthompson@xmission.com
L: bluesmoke-devel@lists.sourceforge.net (moderated for non-subscribers)
W: bluesmoke.sourceforge.net
M: leoli@freescale.com
P: Zhang Wei
M: zw@zh-kernel.org
-L: linuxppc-embedded@ozlabs.org
+L: linuxppc-dev@ozlabs.org
L: linux-kernel@vger.kernel.org
S: Maintained
F: drivers/dma/fsldma.*
F: drivers/spi/pxa2xx*
F: drivers/usb/gadget/pxa2*
F: include/sound/pxa2xx-lib.h
-F: sound/soc/pxa/pxa2xx*
+F: sound/arm/pxa*
+F: sound/soc/pxa
PXA168 SUPPORT
P: Eric Miao
M: lrg@slimlogic.co.uk
P: Mark Brown
M: broonie@opensource.wolfsonmicro.com
-T: git git://opensource.wolfsonmicro.com/linux-2.6-asoc
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6.git
L: alsa-devel@alsa-project.org (subscribers-only)
W: http://alsa-project.org/main/index.php/ASoC
S: Supported
F: sound/soc/
+F: include/sound/soc*
SPARC + UltraSPARC (sparc/sparc64)
P: David S. Miller
S: Maintained
F: drivers/mmc/host/tmio_mmc.*
+TMPFS (SHMEM FILESYSTEM)
+P: Hugh Dickins
+M: hugh.dickins@tiscali.co.uk
+L: linux-mm@kvack.org
+S: Maintained
+F: include/linux/shmem_fs.h
+F: mm/shmem.c
+
TPM DEVICE DRIVER
P: Debora Velarde
M: debora@linux.vnet.ibm.com
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 30
-EXTRAVERSION = -rc5
-NAME = Vindictive Armadillo
+EXTRAVERSION =
+NAME = Man-Eating Seals of Antiquity
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
include $(srctree)/arch/$(SRCARCH)/Makefile
-ifneq (CONFIG_FRAME_WARN,0)
+ifneq ($(CONFIG_FRAME_WARN),0)
KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
endif
#ifndef __ALPHA_PERCPU_H
#define __ALPHA_PERCPU_H
+
#include <linux/compiler.h>
#include <linux/threads.h>
+#include <linux/percpu-defs.h>
/*
* Determine the real variable name from the name visible in the
#endif /* SMP */
-#include <asm-generic/percpu.h>
+#ifdef CONFIG_SMP
+#define PER_CPU_BASE_SECTION ".data.percpu"
+#else
+#define PER_CPU_BASE_SECTION ".data"
+#endif
+
+#ifdef CONFIG_SMP
+
+#ifdef MODULE
+#define PER_CPU_SHARED_ALIGNED_SECTION ""
+#else
+#define PER_CPU_SHARED_ALIGNED_SECTION ".shared_aligned"
+#endif
+#define PER_CPU_FIRST_SECTION ".first"
+
+#else
+
+#define PER_CPU_SHARED_ALIGNED_SECTION ""
+#define PER_CPU_FIRST_SECTION ""
+
+#endif
+
+#define PER_CPU_ATTRIBUTES
#endif /* __ALPHA_PERCPU_H */
select HAVE_CLK
select COMMON_CLKDEV
select ARCH_REQUIRE_GPIOLIB
+ select ARCH_HAS_HOLES_MEMORYMODEL
help
This enables support for the Cirrus EP93xx series of CPUs.
UNPREDICTABLE (in fact it can be predicted that it won't work
at all). If in doubt say Y.
-config ARCH_FLATMEM_HAS_HOLES
+config ARCH_HAS_HOLES_MEMORYMODEL
bool
- default y
- depends on FLATMEM
+ default n
# Discontigmem is deprecated
config ARCH_DISCONTIGMEM_ENABLE
}
#ifdef CONFIG_SMP
-void gic_raise_softirq(cpumask_t cpumask, unsigned int irq)
+void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
{
- unsigned long map = *cpus_addr(cpumask);
+ unsigned long map = *cpus_addr(*mask);
/* this always happens on GIC0 */
writel(map << 16 | irq, gic_data[0].dist_base + GIC_DIST_SOFTINT);
.align 3; \
.long 9999b,9001f; \
.previous
+
+/*
+ * SMP data memory barrier
+ */
+ .macro smp_dmb
+#ifdef CONFIG_SMP
+#if __LINUX_ARM_ARCH__ >= 7
+ dmb
+#elif __LINUX_ARM_ARCH__ == 6
+ mcr p15, 0, r0, c7, c10, 5 @ dmb
+#endif
+#endif
+ .endm
: "cc");
}
+static inline void atomic_add(int i, atomic_t *v)
+{
+ unsigned long tmp;
+ int result;
+
+ __asm__ __volatile__("@ atomic_add\n"
+"1: ldrex %0, [%2]\n"
+" add %0, %0, %3\n"
+" strex %1, %0, [%2]\n"
+" teq %1, #0\n"
+" bne 1b"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&v->counter), "Ir" (i)
+ : "cc");
+}
+
static inline int atomic_add_return(int i, atomic_t *v)
{
unsigned long tmp;
int result;
+ smp_mb();
+
__asm__ __volatile__("@ atomic_add_return\n"
"1: ldrex %0, [%2]\n"
" add %0, %0, %3\n"
: "r" (&v->counter), "Ir" (i)
: "cc");
+ smp_mb();
+
return result;
}
+static inline void atomic_sub(int i, atomic_t *v)
+{
+ unsigned long tmp;
+ int result;
+
+ __asm__ __volatile__("@ atomic_sub\n"
+"1: ldrex %0, [%2]\n"
+" sub %0, %0, %3\n"
+" strex %1, %0, [%2]\n"
+" teq %1, #0\n"
+" bne 1b"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&v->counter), "Ir" (i)
+ : "cc");
+}
+
static inline int atomic_sub_return(int i, atomic_t *v)
{
unsigned long tmp;
int result;
+ smp_mb();
+
__asm__ __volatile__("@ atomic_sub_return\n"
"1: ldrex %0, [%2]\n"
" sub %0, %0, %3\n"
: "r" (&v->counter), "Ir" (i)
: "cc");
+ smp_mb();
+
return result;
}
{
unsigned long oldval, res;
+ smp_mb();
+
do {
__asm__ __volatile__("@ atomic_cmpxchg\n"
"ldrex %1, [%2]\n"
: "cc");
} while (res);
+ smp_mb();
+
return oldval;
}
return val;
}
+#define atomic_add(i, v) (void) atomic_add_return(i, v)
static inline int atomic_sub_return(int i, atomic_t *v)
{
return val;
}
+#define atomic_sub(i, v) (void) atomic_sub_return(i, v)
static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
{
}
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-#define atomic_add(i, v) (void) atomic_add_return(i, v)
-#define atomic_inc(v) (void) atomic_add_return(1, v)
-#define atomic_sub(i, v) (void) atomic_sub_return(i, v)
-#define atomic_dec(v) (void) atomic_sub_return(1, v)
+#define atomic_inc(v) atomic_add(1, v)
+#define atomic_dec(v) atomic_sub(1, v)
#define atomic_inc_and_test(v) (atomic_add_return(1, v) == 0)
#define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0)
#define atomic_add_negative(i,v) (atomic_add_return(i, v) < 0)
-/* Atomic operations are already serializing on ARM */
-#define smp_mb__before_atomic_dec() barrier()
-#define smp_mb__after_atomic_dec() barrier()
-#define smp_mb__before_atomic_inc() barrier()
-#define smp_mb__after_atomic_inc() barrier()
+#define smp_mb__before_atomic_dec() smp_mb()
+#define smp_mb__after_atomic_dec() smp_mb()
+#define smp_mb__before_atomic_inc() smp_mb()
+#define smp_mb__after_atomic_inc() smp_mb()
#include <asm-generic/atomic.h>
#endif
#define L1_CACHE_SHIFT 5
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+/*
+ * Memory returned by kmalloc() may be used for DMA, so we must make
+ * sure that all such allocations are cache aligned. Otherwise,
+ * unrelated code may cause parts of the buffer to be read into the
+ * cache before the transfer is done, causing old data to be seen by
+ * the CPU.
+ */
+#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
+
+/*
+ * With EABI on ARMv5 and above we must have 64-bit aligned slab pointers.
+ */
+#if defined(CONFIG_AEABI) && (__LINUX_ARM_ARCH__ >= 5)
+#define ARCH_SLAB_MINALIGN 8
+#endif
+
#endif
#ifndef __ARM_FLAT_H__
#define __ARM_FLAT_H__
-/* An odd number of words will be pushed after this alignment, so
- deliberately misalign the value. */
-#define flat_stack_align(sp) sp = (void *)(((unsigned long)(sp) - 4) | 4)
#define flat_argvp_envp_on_stack() 1
#define flat_old_ram_flag(flags) (flags)
#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
void gic_dist_init(unsigned int gic_nr, void __iomem *base, unsigned int irq_start);
void gic_cpu_init(unsigned int gic_nr, void __iomem *base);
void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
-void gic_raise_softirq(cpumask_t cpumask, unsigned int irq);
+void gic_raise_softirq(const struct cpumask *mask, unsigned int irq);
#endif
#endif
(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-/*
- * With EABI on ARMv5 and above we must have 64-bit aligned slab pointers.
- */
-#if defined(CONFIG_AEABI) && (__LINUX_ARM_ARCH__ >= 5)
-#define ARCH_SLAB_MINALIGN 8
-#endif
-
#include <asm-generic/page.h>
#endif
/*
* Raise an IPI cross call on CPUs in callmap.
*/
-extern void smp_cross_call(cpumask_t callmap);
-
-/*
- * Broadcast a timer interrupt to the other CPUs.
- */
-extern void smp_send_timer(void);
+extern void smp_cross_call(const struct cpumask *mask);
/*
* Broadcast a clock event to other CPUs.
*/
-extern void smp_timer_broadcast(cpumask_t mask);
+extern void smp_timer_broadcast(const struct cpumask *mask);
/*
* Boot a secondary CPU, and assign it the specified idle task.
extern void platform_cpu_enable(unsigned int cpu);
extern void arch_send_call_function_single_ipi(int cpu);
-extern void arch_send_call_function_ipi(cpumask_t mask);
+extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
+#define arch_send_call_function_ipi_mask arch_send_call_function_ipi_mask
/*
* Local timer interrupt handling function (can be IPI'ed).
unsigned int tmp;
#endif
+ smp_mb();
+
switch (size) {
#if __LINUX_ARM_ARCH__ >= 6
case 1:
__bad_xchg(ptr, size), ret = 0;
break;
}
+ smp_mb();
return ret;
}
#include <asm-generic/cmpxchg-local.h>
+#if __LINUX_ARM_ARCH__ < 6
+
+#ifdef CONFIG_SMP
+#error "SMP is not supported on this platform"
+#endif
+
/*
* cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
* them available.
#include <asm-generic/cmpxchg.h>
#endif
+#else /* __LINUX_ARM_ARCH__ >= 6 */
+
+extern void __bad_cmpxchg(volatile void *ptr, int size);
+
+/*
+ * cmpxchg only support 32-bits operands on ARMv6.
+ */
+
+static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
+ unsigned long new, int size)
+{
+ unsigned long oldval, res;
+
+ switch (size) {
+#ifdef CONFIG_CPU_32v6K
+ case 1:
+ do {
+ asm volatile("@ __cmpxchg1\n"
+ " ldrexb %1, [%2]\n"
+ " mov %0, #0\n"
+ " teq %1, %3\n"
+ " strexbeq %0, %4, [%2]\n"
+ : "=&r" (res), "=&r" (oldval)
+ : "r" (ptr), "Ir" (old), "r" (new)
+ : "memory", "cc");
+ } while (res);
+ break;
+ case 2:
+ do {
+ asm volatile("@ __cmpxchg1\n"
+ " ldrexh %1, [%2]\n"
+ " mov %0, #0\n"
+ " teq %1, %3\n"
+ " strexheq %0, %4, [%2]\n"
+ : "=&r" (res), "=&r" (oldval)
+ : "r" (ptr), "Ir" (old), "r" (new)
+ : "memory", "cc");
+ } while (res);
+ break;
+#endif /* CONFIG_CPU_32v6K */
+ case 4:
+ do {
+ asm volatile("@ __cmpxchg4\n"
+ " ldrex %1, [%2]\n"
+ " mov %0, #0\n"
+ " teq %1, %3\n"
+ " strexeq %0, %4, [%2]\n"
+ : "=&r" (res), "=&r" (oldval)
+ : "r" (ptr), "Ir" (old), "r" (new)
+ : "memory", "cc");
+ } while (res);
+ break;
+ default:
+ __bad_cmpxchg(ptr, size);
+ oldval = 0;
+ }
+
+ return oldval;
+}
+
+static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old,
+ unsigned long new, int size)
+{
+ unsigned long ret;
+
+ smp_mb();
+ ret = __cmpxchg(ptr, old, new, size);
+ smp_mb();
+
+ return ret;
+}
+
+#define cmpxchg(ptr,o,n) \
+ ((__typeof__(*(ptr)))__cmpxchg_mb((ptr), \
+ (unsigned long)(o), \
+ (unsigned long)(n), \
+ sizeof(*(ptr))))
+
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+ unsigned long old,
+ unsigned long new, int size)
+{
+ unsigned long ret;
+
+ switch (size) {
+#ifndef CONFIG_CPU_32v6K
+ case 1:
+ case 2:
+ ret = __cmpxchg_local_generic(ptr, old, new, size);
+ break;
+#endif /* !CONFIG_CPU_32v6K */
+ default:
+ ret = __cmpxchg(ptr, old, new, size);
+ }
+
+ return ret;
+}
+
+#define cmpxchg_local(ptr,o,n) \
+ ((__typeof__(*(ptr)))__cmpxchg_local((ptr), \
+ (unsigned long)(o), \
+ (unsigned long)(n), \
+ sizeof(*(ptr))))
+
+#ifdef CONFIG_CPU_32v6K
+
+/*
+ * Note : ARMv7-M (currently unsupported by Linux) does not support
+ * ldrexd/strexd. If ARMv7-M is ever supported by the Linux kernel, it should
+ * not be allowed to use __cmpxchg64.
+ */
+static inline unsigned long long __cmpxchg64(volatile void *ptr,
+ unsigned long long old,
+ unsigned long long new)
+{
+ register unsigned long long oldval asm("r0");
+ register unsigned long long __old asm("r2") = old;
+ register unsigned long long __new asm("r4") = new;
+ unsigned long res;
+
+ do {
+ asm volatile(
+ " @ __cmpxchg8\n"
+ " ldrexd %1, %H1, [%2]\n"
+ " mov %0, #0\n"
+ " teq %1, %3\n"
+ " teqeq %H1, %H3\n"
+ " strexdeq %0, %4, %H4, [%2]\n"
+ : "=&r" (res), "=&r" (oldval)
+ : "r" (ptr), "Ir" (__old), "r" (__new)
+ : "memory", "cc");
+ } while (res);
+
+ return oldval;
+}
+
+static inline unsigned long long __cmpxchg64_mb(volatile void *ptr,
+ unsigned long long old,
+ unsigned long long new)
+{
+ unsigned long long ret;
+
+ smp_mb();
+ ret = __cmpxchg64(ptr, old, new);
+ smp_mb();
+
+ return ret;
+}
+
+#define cmpxchg64(ptr,o,n) \
+ ((__typeof__(*(ptr)))__cmpxchg64_mb((ptr), \
+ (unsigned long long)(o), \
+ (unsigned long long)(n)))
+
+#define cmpxchg64_local(ptr,o,n) \
+ ((__typeof__(*(ptr)))__cmpxchg64((ptr), \
+ (unsigned long long)(o), \
+ (unsigned long long)(n)))
+
+#else /* !CONFIG_CPU_32v6K */
+
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+#endif /* CONFIG_CPU_32v6K */
+
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
+
#endif /* __ASSEMBLY__ */
#define arch_align_stack(x) (x)
return 1;
if (cpu_architecture() < CPU_ARCH_ARMv6)
return 1;
+#if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT)
+ /*
+ * If we have support for OABI programs, we can never allow NX
+ * support - our signal syscall restart mechanism relies upon
+ * being able to execute code placed on the user stack.
+ */
+ return 1;
+#else
return 0;
+#endif
}
EXPORT_SYMBOL(arm_elf_read_implies_exec);
*/
__kuser_memory_barrier: @ 0xffff0fa0
-
-#if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_SMP)
- mcr p15, 0, r0, c7, c10, 5 @ dmb
-#endif
+ smp_dmb
usr_ret lr
.align 5
per_cpu(cpu_data, cpu).idle = current;
}
-static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg)
+static void send_ipi_message(const struct cpumask *mask, enum ipi_msg_type msg)
{
unsigned long flags;
unsigned int cpu;
local_irq_save(flags);
- for_each_cpu_mask(cpu, callmap) {
+ for_each_cpu(cpu, mask) {
struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
spin_lock(&ipi->lock);
/*
* Call the platform specific cross-CPU call function.
*/
- smp_cross_call(callmap);
+ smp_cross_call(mask);
local_irq_restore(flags);
}
-void arch_send_call_function_ipi(cpumask_t mask)
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
{
send_ipi_message(mask, IPI_CALL_FUNC);
}
void arch_send_call_function_single_ipi(int cpu)
{
- send_ipi_message(cpumask_of_cpu(cpu), IPI_CALL_FUNC_SINGLE);
+ send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
}
void show_ipi_list(struct seq_file *p)
void smp_send_reschedule(int cpu)
{
- send_ipi_message(cpumask_of_cpu(cpu), IPI_RESCHEDULE);
+ send_ipi_message(cpumask_of(cpu), IPI_RESCHEDULE);
}
-void smp_send_timer(void)
-{
- cpumask_t mask = cpu_online_map;
- cpu_clear(smp_processor_id(), mask);
- send_ipi_message(mask, IPI_TIMER);
-}
-
-void smp_timer_broadcast(cpumask_t mask)
+void smp_timer_broadcast(const struct cpumask *mask)
{
send_ipi_message(mask, IPI_TIMER);
}
{
cpumask_t mask = cpu_online_map;
cpu_clear(smp_processor_id(), mask);
- send_ipi_message(mask, IPI_CPU_STOP);
+ send_ipi_message(&mask, IPI_CPU_STOP);
}
/*
return -EINVAL;
}
-static int
-on_each_cpu_mask(void (*func)(void *), void *info, int wait, cpumask_t mask)
+static void
+on_each_cpu_mask(void (*func)(void *), void *info, int wait,
+ const struct cpumask *mask)
{
- int ret = 0;
-
preempt_disable();
- ret = smp_call_function_mask(mask, func, info, wait);
- if (cpu_isset(smp_processor_id(), mask))
+ smp_call_function_many(mask, func, info, wait);
+ if (cpumask_test_cpu(smp_processor_id(), mask))
func(info);
preempt_enable();
-
- return ret;
}
/**********************************************************************/
void flush_tlb_mm(struct mm_struct *mm)
{
- cpumask_t mask = mm->cpu_vm_mask;
-
- on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mask);
+ on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, &mm->cpu_vm_mask);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
{
- cpumask_t mask = vma->vm_mm->cpu_vm_mask;
struct tlb_args ta;
ta.ta_vma = vma;
ta.ta_start = uaddr;
- on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mask);
+ on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, &vma->vm_mm->cpu_vm_mask);
}
void flush_tlb_kernel_page(unsigned long kaddr)
void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
- cpumask_t mask = vma->vm_mm->cpu_vm_mask;
struct tlb_args ta;
ta.ta_vma = vma;
ta.ta_start = start;
ta.ta_end = end;
- on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mask);
+ on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, &vma->vm_mm->cpu_vm_mask);
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
mov r2, #1
add r1, r1, r0, lsr #3 @ Get byte offset
mov r3, r2, lsl r3 @ create mask
+ smp_dmb
1: ldrexb r2, [r1]
ands r0, r2, r3 @ save old value of bit
\instr r2, r2, r3 @ toggle bit
strexb ip, r2, [r1]
cmp ip, #0
bne 1b
+ smp_dmb
cmp r0, #0
movne r0, #1
2: mov pc, lr
--- /dev/null
+/*
+ * <mach/asp.h> - DaVinci Audio Serial Port support
+ */
+#ifndef __ASM_ARCH_DAVINCI_ASP_H
+#define __ASM_ARCH_DAVINCI_ASP_H
+
+#include <mach/irqs.h>
+
+/* Bases of register banks */
+#define DAVINCI_ASP0_BASE 0x01E02000
+#define DAVINCI_ASP1_BASE 0x01E04000
+
+/* EDMA channels */
+#define DAVINCI_DMA_ASP0_TX 2
+#define DAVINCI_DMA_ASP0_RX 3
+#define DAVINCI_DMA_ASP1_TX 8
+#define DAVINCI_DMA_ASP1_RX 9
+
+/* Interrupts */
+#define DAVINCI_ASP0_RX_INT IRQ_MBRINT
+#define DAVINCI_ASP0_TX_INT IRQ_MBXINT
+#define DAVINCI_ASP1_RX_INT IRQ_MBRINT
+#define DAVINCI_ASP1_TX_INT IRQ_MBXINT
+
+#endif /* __ASM_ARCH_DAVINCI_ASP_H */
#include <asm/div64.h>
#include <mach/hardware.h>
+
+/*
+ * The EP93xx has two external crystal oscillators. To generate the
+ * required high-frequency clocks, the processor uses two phase-locked-
+ * loops (PLLs) to multiply the incoming external clock signal to much
+ * higher frequencies that are then divided down by programmable dividers
+ * to produce the needed clocks. The PLLs operate independently of one
+ * another.
+ */
+#define EP93XX_EXT_CLK_RATE 14745600
+#define EP93XX_EXT_RTC_RATE 32768
+
+
struct clk {
unsigned long rate;
int users;
+ int sw_locked;
u32 enable_reg;
u32 enable_mask;
+
+ unsigned long (*get_rate)(struct clk *clk);
};
-static struct clk clk_uart = {
- .rate = 14745600,
+
+static unsigned long get_uart_rate(struct clk *clk);
+
+
+static struct clk clk_uart1 = {
+ .sw_locked = 1,
+ .enable_reg = EP93XX_SYSCON_DEVICE_CONFIG,
+ .enable_mask = EP93XX_SYSCON_DEVICE_CONFIG_U1EN,
+ .get_rate = get_uart_rate,
+};
+static struct clk clk_uart2 = {
+ .sw_locked = 1,
+ .enable_reg = EP93XX_SYSCON_DEVICE_CONFIG,
+ .enable_mask = EP93XX_SYSCON_DEVICE_CONFIG_U2EN,
+ .get_rate = get_uart_rate,
+};
+static struct clk clk_uart3 = {
+ .sw_locked = 1,
+ .enable_reg = EP93XX_SYSCON_DEVICE_CONFIG,
+ .enable_mask = EP93XX_SYSCON_DEVICE_CONFIG_U3EN,
+ .get_rate = get_uart_rate,
};
static struct clk clk_pll1;
static struct clk clk_f;
{ .dev_id = dev, .con_id = con, .clk = ck }
static struct clk_lookup clocks[] = {
- INIT_CK("apb:uart1", NULL, &clk_uart),
- INIT_CK("apb:uart2", NULL, &clk_uart),
- INIT_CK("apb:uart3", NULL, &clk_uart),
+ INIT_CK("apb:uart1", NULL, &clk_uart1),
+ INIT_CK("apb:uart2", NULL, &clk_uart2),
+ INIT_CK("apb:uart3", NULL, &clk_uart3),
INIT_CK(NULL, "pll1", &clk_pll1),
INIT_CK(NULL, "fclk", &clk_f),
INIT_CK(NULL, "hclk", &clk_h),
u32 value;
value = __raw_readl(clk->enable_reg);
+ if (clk->sw_locked)
+ __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(value | clk->enable_mask, clk->enable_reg);
}
u32 value;
value = __raw_readl(clk->enable_reg);
+ if (clk->sw_locked)
+ __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(value & ~clk->enable_mask, clk->enable_reg);
}
}
EXPORT_SYMBOL(clk_disable);
+static unsigned long get_uart_rate(struct clk *clk)
+{
+ u32 value;
+
+ value = __raw_readl(EP93XX_SYSCON_CLOCK_CONTROL);
+ if (value & EP93XX_SYSCON_CLOCK_UARTBAUD)
+ return EP93XX_EXT_CLK_RATE;
+ else
+ return EP93XX_EXT_CLK_RATE / 2;
+}
+
unsigned long clk_get_rate(struct clk *clk)
{
+ if (clk->get_rate)
+ return clk->get_rate(clk);
+
return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);
unsigned long long rate;
int i;
- rate = 14745600;
+ rate = EP93XX_EXT_CLK_RATE;
rate *= ((config_word >> 11) & 0x1f) + 1; /* X1FBD */
rate *= ((config_word >> 5) & 0x3f) + 1; /* X2FBD */
do_div(rate, (config_word & 0x1f) + 1); /* X2IPD */
value = __raw_readl(EP93XX_SYSCON_CLOCK_SET1);
if (!(value & 0x00800000)) { /* PLL1 bypassed? */
- clk_pll1.rate = 14745600;
+ clk_pll1.rate = EP93XX_EXT_CLK_RATE;
} else {
clk_pll1.rate = calc_pll_rate(value);
}
value = __raw_readl(EP93XX_SYSCON_CLOCK_SET2);
if (!(value & 0x00080000)) { /* PLL2 bypassed? */
- clk_pll2.rate = 14745600;
+ clk_pll2.rate = EP93XX_EXT_CLK_RATE;
} else if (value & 0x00040000) { /* PLL2 enabled? */
clk_pll2.rate = calc_pll_rate(value);
} else {
#define EP93XX_SYSCON_CLOCK_SET1 EP93XX_SYSCON_REG(0x20)
#define EP93XX_SYSCON_CLOCK_SET2 EP93XX_SYSCON_REG(0x24)
#define EP93XX_SYSCON_DEVICE_CONFIG EP93XX_SYSCON_REG(0x80)
-#define EP93XX_SYSCON_DEVICE_CONFIG_CRUNCH_ENABLE 0x00800000
+#define EP93XX_SYSCON_DEVICE_CONFIG_U3EN (1<<24)
+#define EP93XX_SYSCON_DEVICE_CONFIG_CRUNCH_ENABLE (1<<23)
+#define EP93XX_SYSCON_DEVICE_CONFIG_U2EN (1<<20)
+#define EP93XX_SYSCON_DEVICE_CONFIG_U1EN (1<<18)
#define EP93XX_SYSCON_SWLOCK EP93XX_SYSCON_REG(0xc0)
#define EP93XX_WATCHDOG_BASE (EP93XX_APB_VIRT_BASE + 0x00140000)
/*
* Memory Map definitions
*/
-/* FIXME: Does it really swap SRAM like this? */
#ifdef CONFIG_GEMINI_MEM_SWAP
# define GEMINI_DRAM_BASE 0x00000000
-# define GEMINI_SRAM_BASE 0x20000000
+# define GEMINI_SRAM_BASE 0x70000000
#else
# define GEMINI_SRAM_BASE 0x00000000
# define GEMINI_DRAM_BASE 0x10000000
.rate = 14745600,
};
-static struct clk_lookup lookups[] __initdata = {
+static struct clk_lookup lookups[] = {
{ /* UART0 */
.dev_id = "mb:16",
.clk = &uartclk,
}
if (!found)
- return -ENOSYS;
+ return -ENODEV;
return 0;
}
.id = 0,
.num_resources = 1,
.resource = kirkwood_ge00_resources,
+ .dev = {
+ .coherent_dma_mask = 0xffffffff,
+ },
};
void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
.id = 1,
.num_resources = 1,
.resource = kirkwood_ge01_resources,
+ .dev = {
+ .coherent_dma_mask = 0xffffffff,
+ },
};
void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
static struct resource kirkwood_i2c_resources[] = {
{
- .name = "i2c",
.start = I2C_PHYS_BASE,
.end = I2C_PHYS_BASE + 0x1f,
.flags = IORESOURCE_MEM,
}, {
- .name = "i2c",
.start = IRQ_KIRKWOOD_TWSI,
.end = IRQ_KIRKWOOD_TWSI,
.flags = IORESOURCE_IRQ,
MPP1_SPI_MOSI,
MPP2_SPI_SCK,
MPP3_SPI_MISO,
+ MPP4_SATA1_ACTn,
+ MPP5_SATA0_ACTn,
MPP8_TW_SDA,
MPP9_TW_SCK,
MPP10_UART0_TXD,
MPP14_UART1_RXD, /* PIC controller */
MPP15_GPIO, /* USB Copy button */
MPP16_GPIO, /* Reset button */
- MPP20_SATA1_ACTn,
- MPP21_SATA0_ACTn,
- MPP22_SATA1_PRESENTn,
- MPP23_SATA0_PRESENTn,
0
};
/* IO_START and IO_BASE are defined in hardware.h */
-#define SYS_CLOCK_START (IO_START + SYS_CLCOK_OFF) /* Physical address */
+#define SYS_CLOCK_START (IO_START + SYS_CLOCK_OFF) /* Physical address */
#define SYS_CLOCK_BASE (IO_BASE + SYS_CLOCK_OFF) /* Virtual address */
/* Define the interface to the SYS_CLOCK */
.id = 0,
.num_resources = 1,
.resource = loki_ge0_resources,
+ .dev = {
+ .coherent_dma_mask = 0xffffffff,
+ },
};
void __init loki_ge0_init(struct mv643xx_eth_platform_data *eth_data)
.id = 1,
.num_resources = 1,
.resource = loki_ge1_resources,
+ .dev = {
+ .coherent_dma_mask = 0xffffffff,
+ },
};
void __init loki_ge1_init(struct mv643xx_eth_platform_data *eth_data)
#include <mach/mfp.h>
+#define MFP_DRIVE_VERY_SLOW (0x0 << 13)
+#define MFP_DRIVE_SLOW (0x1 << 13)
+#define MFP_DRIVE_MEDIUM (0x2 << 13)
+#define MFP_DRIVE_FAST (0x3 << 13)
+
/* GPIO */
#define GPIO0_GPIO MFP_CFG(GPIO0, AF5)
#define GPIO1_GPIO MFP_CFG(GPIO1, AF5)
Code Review / linux-2.6.git / commitdiff