diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-slab | 479 | ||||
| -rw-r--r-- | Documentation/DocBook/kgdb.tmpl | 2 | ||||
| -rw-r--r-- | Documentation/filesystems/tmpfs.txt | 2 | ||||
| -rw-r--r-- | Documentation/hwmon/sysfs-interface | 6 | ||||
| -rw-r--r-- | Documentation/input/multi-touch-protocol.txt | 103 | ||||
| -rw-r--r-- | Documentation/kernel-parameters.txt | 4 | ||||
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 15 | ||||
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 29 | ||||
| -rw-r--r-- | Documentation/sound/alsa/HD-Audio-Models.txt | 19 | ||||
| -rw-r--r-- | Documentation/sound/alsa/Procfile.txt | 5 | ||||
| -rw-r--r-- | Documentation/sound/alsa/README.maya44 | 163 | ||||
| -rw-r--r-- | Documentation/sound/alsa/soc/dapm.txt | 1 | ||||
| -rw-r--r-- | Documentation/sysctl/vm.txt | 28 |
13 files changed, 795 insertions, 61 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab new file mode 100644 index 00000000000..6dcf75e594f --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-slab @@ -0,0 +1,479 @@ +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. diff --git a/Documentation/DocBook/kgdb.tmpl b/Documentation/DocBook/kgdb.tmpl index 372dec20c8d..5cff41a5fa7 100644 --- a/Documentation/DocBook/kgdb.tmpl +++ b/Documentation/DocBook/kgdb.tmpl @@ -281,7 +281,7 @@ 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"> diff --git a/Documentation/filesystems/tmpfs.txt b/Documentation/filesystems/tmpfs.txt index 222437efd75..3015da0c6b2 100644 --- a/Documentation/filesystems/tmpfs.txt +++ b/Documentation/filesystems/tmpfs.txt @@ -133,4 +133,4 @@ RAM/SWAP in 10240 inodes and it is only accessible by root. Author: Christoph Rohland <cr@sap.com>, 1.12.01 Updated: - Hugh Dickins <hugh@veritas.com>, 4 June 2007 + Hugh Dickins, 4 June 2007 diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface index 2f10ce6a879..004ee161721 100644 --- a/Documentation/hwmon/sysfs-interface +++ b/Documentation/hwmon/sysfs-interface @@ -150,6 +150,11 @@ fan[1-*]_min Fan minimum value 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 @@ -390,6 +395,7 @@ OR 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 diff --git a/Documentation/input/multi-touch-protocol.txt b/Documentation/input/multi-touch-protocol.txt index 9f09557aea3..a12ea3b586e 100644 --- a/Documentation/input/multi-touch-protocol.txt +++ b/Documentation/input/multi-touch-protocol.txt @@ -18,8 +18,12 @@ Usage 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 @@ -27,11 +31,26 @@ minimum set consists of ABS_MT_TOUCH_MAJOR, ABS_MT_POSITION_X and 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 @@ -44,24 +63,24 @@ ABS_MT_TOUCH_MAJOR 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 @@ -70,14 +89,17 @@ different characteristic widths [1]. 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 @@ -98,8 +120,35 @@ ABS_MT_BLOB_ID 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 @@ -109,14 +158,18 @@ The kernel driver should generate an arbitrary enumeration of the set of 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 ----- @@ -136,5 +189,7 @@ could be used to derive tilt. 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. diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index e87bdbfbcc7..fd5cac01303 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1535,6 +1535,10 @@ and is between 256 and 4096 characters. It is defined in the file 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. diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index ec5de02f543..b121c5db707 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -1266,13 +1266,22 @@ sctp_rmem - vector of 3 INTEGERs: min, default, max 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 diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index 012858d2b11..945de361022 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -460,6 +460,25 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. 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 ------------------ @@ -925,6 +944,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. * Onkyo SE-90PCI * Onkyo SE-200PCI * ESI Juli@ + * ESI Maya44 * Hercules Fortissimo IV * EGO-SYS WaveTerminal 192M @@ -933,7 +953,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192, juli, aureon51, aureon71, universe, ap192, k8x800, phase22, phase28, ms300, av710, se200pci, se90pci, - fortissimo4, sn25p, WT192M + fortissimo4, sn25p, WT192M, maya44 This module supports multiple cards and autoprobe. @@ -1093,6 +1113,13 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. This module supports multiple cards. The driver requires the firmware loader support on kernel. + Module snd-lx6464es + ------------------- + + Module for Digigram LX6464ES boards + + This module supports multiple cards. + Module snd-maestro3 ------------------- diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt index 8eec05bc079..de8e10a9410 100644 --- a/Documentation/sound/alsa/HD-Audio-Models.txt +++ b/Documentation/sound/alsa/HD-Audio-Models.txt @@ -36,6 +36,7 @@ ALC260 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 @@ -85,10 +86,11 @@ ALC269 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 @@ -107,6 +109,9 @@ ALC662/663 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 @@ -118,6 +123,7 @@ 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 @@ -133,10 +139,12 @@ ALC883/888 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 @@ -150,6 +158,9 @@ ALC883/888 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 @@ -334,6 +345,7 @@ STAC9227/9228/9229/927x 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) @@ -347,6 +359,7 @@ STAC92HD71B* 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* diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt index bba2dbb79d8..cfac20cf9e3 100644 --- a/Documentation/sound/alsa/Procfile.txt +++ b/Documentation/sound/alsa/Procfile.txt @@ -104,6 +104,11 @@ card*/pcm*/xrun_debug 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. diff --git a/Documentation/sound/alsa/README.maya44 b/Documentation/sound/alsa/README.maya44 new file mode 100644 index 00000000000..0e41576fa13 --- /dev/null +++ b/Documentation/sound/alsa/README.maya44 @@ -0,0 +1,163 @@ +NOTE: The following is the original document of Rainer's patch that the +current maya44 code based on. Some contents might be obsoleted, but I +keep here as reference -- tiwai + +---------------------------------------------------------------- + +STATE OF DEVELOPMENT: + +This driver is being developed on the initiative of Piotr Makowski (oponek@gmail.com) and financed by Lars Bergmann. +Development is carried out by Rainer Zimmermann (mail@lightshed.de). + +ESI provided a sample Maya44 card for the development work. + +However, unfortunately it has turned out difficult to get detailed programming information, so I (Rainer Zimmermann) had to find out some card-specific information by experiment and conjecture. Some information (in particular, several GPIO bits) is still missing. + +This is the first testing version of the Maya44 driver released to the alsa-devel mailing list (Feb 5, 2008). + + +The following functions work, as tested by Rainer Zimmermann and Piotr Makowski: + +- playback and capture at all sampling rates +- input/output level +- crossmixing +- line/mic switch +- phantom power switch +- analogue monitor a.k.a bypass + + +The following functions *should* work, but are not fully tested: + +- Channel 3+4 analogue - S/PDIF input switching +- S/PDIF output +- all inputs/outputs on the M/IO/DIO extension card +- internal/external clock selection + + +*In particular, we would appreciate testing of these functions by anyone who has access to an M/IO/DIO extension card.* + + +Things that do not seem to work: + +- The level meters ("multi track") in 'alsamixer' do not seem to react to signals in (if this is a bug, it would probably be in the existing ICE1724 code). + +- Ardour 2.1 seems to work only via JACK, not using ALSA directly or via OSS. This still needs to be tracked down. + + +DRIVER DETAILS: + +the following files were added: + +pci/ice1724/maya44.c - Maya44 specific code +pci/ice1724/maya44.h +pci/ice1724/ice1724.patch +pci/ice1724/ice1724.h.patch - PROPOSED patch to ice1724.h (see SAMPLING RATES) +i2c/other/wm8776.c - low-level access routines for Wolfson WM8776 codecs +include/wm8776.h + + +Note that the wm8776.c code is meant to be card-independent and does not actually register the codec with the ALSA infrastructure. +This is done in maya44.c, mainly because some of the WM8776 controls are used in Maya44-specific ways, and should be named appropriately. + + +the following files were created in pci/ice1724, simply #including the corresponding file from the alsa-kernel tree: + +wtm.h +vt1720_mobo.h +revo.h +prodigy192.h +pontis.h +phase.h +maya44.h +juli.h +aureon.h +amp.h +envy24ht.h +se.h +prodigy_hifi.h + + +*I hope this is the correct way to do things.* + + +SAMPLING RATES: + +The Maya44 card (or more exactly, the Wolfson WM8776 codecs) allow a maximum sampling rate of 192 kHz for playback and 92 kHz for capture. + +As the ICE1724 chip only allows one global sampling rate, this is handled as follows: + +* setting the sampling rate on any open PCM device on the maya44 card will always set the *global* sampling rate for all playback and capture channels. + +* In the current state of the driver, setting rates of up to 192 kHz is permitted even for capture devices. + +*AVOID CAPTURING AT RATES ABOVE 96kHz*, even though it may appear to work. The codec cannot actually capture at such rates, meaning poor quality. + + +I propose some additional code for limiting the sampling rate when setting on a capture pcm device. However because of the global sampling rate, this logic would be somewhat problematic. + +The proposed code (currently deactivated) is in ice1712.h.patch, ice1724.c and maya44.c (in pci/ice1712). + + +SOUND DEVICES: + +PCM devices correspond to inputs/outputs as follows (assuming Maya44 is card #0): + +hw:0,0 input - stereo, analog input 1+2 +hw:0,0 output - stereo, analog output 1+2 +hw:0,1 input - stereo, analog input 3+4 OR S/PDIF input +hw:0,1 output - stereo, analog output 3+4 (and SPDIF out) + + +NAMING OF MIXER CONTROLS: + +(for more information about the signal flow, please refer to the block diagram on p.24 of the ESI Maya44 manual, or in the ESI windows software). + + +PCM: (digital) output level for channel 1+2 +PCM 1: same for channel 3+4 + +Mic Phantom+48V: switch for +48V phantom power for electrostatic microphones on input 1/2. + Make sure this is not turned on while any other source is connected to input 1/2. + It might damage the source and/or the maya44 card. + +Mic/Line input: if switch is is on, input jack 1/2 is microphone input (mono), otherwise line input (stereo). + +Bypass: analogue bypass from ADC input to output for channel 1+2. Same as "Monitor" in the windows driver. +Bypass 1: same for channel 3+4. + +Crossmix: cross-mixer from channels 1+2 to channels 3+4 +Crossmix 1: cross-mixer from channels 3+4 to channels 1+2 + +IEC958 Output: switch for S/PDIF output. + This is not supported by the ESI windows driver. + S/PDIF should output the same signal as channel 3+4. [untested!] + + +Digitial output selectors: + + These switches allow a direct digital routing from the ADCs to the DACs. + Each switch determines where the digital input data to one of the DACs comes from. + They are not supported by the ESI windows driver. + For normal operation, they should all be set to "PCM out". + +H/W: Output source channel 1 +H/W 1: Output source channel 2 +H/W 2: Output source channel 3 +H/W 3: Output source channel 4 + +H/W 4 ... H/W 9: unknown function, left in to enable testing. + Possibly some of these control S/PDIF output(s). + If these turn out to be unused, they will go away in later driver versions. + +Selectable values for each of the digital output selectors are: + "PCM out" -> DAC output of the corresponding channel (default setting) + "Input 1"... + "Input 4" -> direct routing from ADC output of the selected input channel + + +-------- + +Feb 14, 2008 +Rainer Zimmermann +mail@lightshed.de + diff --git a/Documentation/sound/alsa/soc/dapm.txt b/Documentation/sound/alsa/soc/dapm.txt index 9e6763264a2..9ac842be9b4 100644 --- a/Documentation/sound/alsa/soc/dapm.txt +++ b/Documentation/sound/alsa/soc/dapm.txt @@ -62,6 +62,7 @@ Audio DAPM widgets fall into a number of types:- 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) diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt index b716d33912d..c302ddf629a 100644 --- a/Documentation/sysctl/vm.txt +++ b/Documentation/sysctl/vm.txt @@ -39,8 +39,6 @@ Currently, these files are in /proc/sys/vm: - 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 @@ -469,32 +467,6 @@ The default value is 0. ============================================================== -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. |