Makefiles and Kconfigs to build zcache in drivers/staging
There is a dependency on xvmalloc.* which in 2.6.37 resides
in drivers/staging/zram. Should this move or disappear,
some Makefile/Kconfig changes will be required.
Dan Magenheimer [Mon, 7 Feb 2011 03:26:08 +0000 (19:26 -0800)]
staging: zcache: host services and PAM services
[PATCH V2 2/3] drivers/staging: zcache: host services and PAM services
Zcache provides host services (memory allocation) for tmem,
a "shim" to interface cleancache and frontswap to tmem, and
two different page-addressable memory implemenations using
lzo1x compression. The first, "compression buddies" ("zbud")
compresses pairs of pages and supplies a shrinker interface
that allows entire pages to be reclaimed. The second is
a shim to xvMalloc which is more space-efficient but
less receptive to page reclamation. The first is used
for ephemeral pools and the second for persistent pools.
All ephemeral pools share the same memory, that is, even
pages from different pools can share the same page.
Transcendent memory ("tmem") is a clean API/ABI that provides
for an efficient address translation and a set of highly
concurrent access methods to copy data between a page-oriented
data source (e.g. cleancache or frontswap) and a page-addressable
memory ("PAM") data store. Of critical importance, the PAM data
store is of unknown (and possibly varying) size so any individual
access may succeed or fail as defined by the API/ABI.
Tmem exports a basic set of access methods (e.g. put, get,
flush, flush object, new pool, and destroy pool) which are
normally called from a "host" (e.g. zcache).
To be functional, two sets of "ops" must be registered by the
host, one to provide "host services" (memory allocation) and
one to provide page-addressable memory ("PAM") hooks.
Tmem supports one or more "clients", each which can provide
a set of "pools" to partition pages. Each pool contains
a set of "objects"; each object holds pointers to some number
of PAM page descriptors ("pampd"), indexed by an "index" number.
This triple <pool id, object id, index> is sometimes referred
to as a "handle". Tmem's primary function is to essentially
provide address translation of handles into pampds and move
data appropriately.
As an example, for cleancache, a pool maps to a filesystem,
an object maps to a file, and the index is the page offset
into the file. And in this patch, zcache is the host and
each PAM descriptor points to a compressed page of data.
Tmem supports two kinds of pages: "ephemeral" and "persistent".
Ephemeral pages may be asynchronously reclaimed "bottoms up"
so the data structures and concurrency model must allow for
this. For example, each pampd must retain sufficient information
to invalidate tmem's handle-to-pampd translation.
its containing object so that, on reclaim, all tmem data
structures can be made consistent.
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Save a few bytes, use union for data allocated for spi buffers.
Remove use of device IDs.
Fix comments.
Make master clock mclk always type unsigned long.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Michael Hennerich [Mon, 7 Feb 2011 10:05:46 +0000 (11:05 +0100)]
Staging: IIO: TRIGGER: New sysfs based trigger
This patch adds a new trigger that can be invoked by writing
the sysfs file: trigger_now. This approach can be valuable during
automated testing or in situations, where other trigger methods
are not applicable. For example no RTC or spare GPIOs.
Last but not least we can allow user space applications to produce triggers.
IIO: TRIGGER: Apply review feedback by Greg Kroah-Hartman
Changes since v1:
Add sysfs documentation.
Change license notice.
Add module alias.
Add more Kconfig help text
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 9 Feb 2011 21:19:03 +0000 (13:19 -0800)]
Staging: samsung-laptop: add a bunch more laptop DMI signatures
Taken from the fork of the driver at:
http://code.google.com/p/easy-slow-down-manager/
which should no longer be needed now that the in-kernel driver now
supports these laptops.
Ingmar Steen [Mon, 7 Feb 2011 13:32:31 +0000 (14:32 +0100)]
staging: samsung-laptop: Extend samsung-laptop platform driver to support another flavor of its platform BIOS.
There are currently two implementations of the Samsung BIOS that controls the rfkill
switch, backlight brightness / power and performance level. The samsung-laptop driver
implements the BIOS flavor with the SECLINUX signature, this patch implements talking
to the other BIOS with 'SwSmi@' signature. Both expose very similar functionality and
way of accessing the commands. The differences are mostly offsets, command identifiers
and some values.
This patch introduces a sabi_config structure that contains information on identifying
and accessing specific SABI flavors.
Timo von Holtz [Tue, 8 Feb 2011 19:41:19 +0000 (20:41 +0100)]
Staging: quickstart: fixed coding style issues
Fixed the Following coding Style Issues:
drivers/staging/quickstart/quickstart.c:8: ERROR: trailing whitespace
drivers/staging/quickstart/quickstart.c:144: ERROR: spaces required around that '?' (ctx:VxV)
drivers/staging/quickstart/quickstart.c:144: ERROR: spaces required around that ':' (ctx:VxV)
Signed-off-by: Timo von Holtz <tvh@informatik.uni-kiel.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Andres Salomon [Sun, 6 Feb 2011 23:28:39 +0000 (15:28 -0800)]
staging: olpc_dcon: change sysfs 'output' toggle to be clearer...
..and store it in dcon_priv. This renames it to 'monochrome',
which I think is much clearer. Previously, "echo 1 > output"
toggled mono mode, while "echo 0 > output" enabled color.
"Echo 1 > monochrome" makes more sense to me.
Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Tomas Winkler [Tue, 8 Feb 2011 23:12:49 +0000 (01:12 +0200)]
stagine/easycap: make functions regset and regget static
regget and regset functions are used only from within
easycap_low.c so they can be static
Move the functions to avoid forward declarations
Move GET and SET macro definitions into the c-file
Cc: Mike Thomas <rmthomas@sciolus.org> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Tomas Winkler [Mon, 7 Feb 2011 07:41:47 +0000 (09:41 +0200)]
staging/easycap: fix build when SND is not enabled
Fix easycap build when CONFIG_SOUND is enabled but CONFIG_SND is
not enabled.
use choice construct to select between ALSA and OSS API binding
drivers/built-in.o: In function `easycap_usb_disconnect':
easycap_main.c:(.text+0x2aba20): undefined reference to `snd_card_free'
drivers/built-in.o: In function `easycap_alsa_probe':
(.text+0x2b784b): undefined reference to `snd_card_create'
drivers/built-in.o: In function `easycap_alsa_probe':
(.text+0x2b78fb): undefined reference to `snd_pcm_new'
drivers/built-in.o: In function `easycap_alsa_probe':
(.text+0x2b7916): undefined reference to `snd_pcm_set_ops'
drivers/built-in.o: In function `easycap_alsa_probe':
(.text+0x2b795b): undefined reference to `snd_card_register'
drivers/built-in.o: In function `easycap_alsa_probe':
(.text+0x2b79d8): undefined reference to `snd_card_free'
drivers/built-in.o: In function `easycap_alsa_probe':
(.text+0x2b7a78): undefined reference to `snd_card_free'
drivers/built-in.o: In function `easycap_alsa_complete':
(.text+0x2b7e68): undefined reference to `snd_pcm_period_elapsed'
drivers/built-in.o:(.data+0x2cae8): undefined reference to `snd_pcm_lib_ioctl'
Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: R.M. Thomas <rmthomas@sciolus.org> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dan Carpenter [Tue, 8 Feb 2011 22:45:13 +0000 (01:45 +0300)]
Staging: rtl8712: fix math errors in snprintf()
The original code had calls to snprintf(p, 7, "wpa_ie=") but that string
is 8 characters (because snprintf() puts a NUL terminator on the end).
So instead of an '=' the what gets written to buf is a NUL terminator
followed by the rest of the string.
And actually the %02x formats are three chars as well when you include
the terminator.
Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
adds implementation for allowing configuration of dot11RTSThreshold
as defined in the 802.11 standards. The mac80211 module will use
callback set_rts_threshold to configure this in the driver.
Reviewed-by: Roland Vossen <rvossen@broadcom.com> Reviewed-by: Brett Rudley <brudley@broadcom.com> Reviewed-by: Henry Ptasinski <henryp@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Laurent Pinchart [Sun, 12 Dec 2010 13:39:37 +0000 (13:39 +0000)]
staging: tidspbridge: Fix atoi to support hexadecimal numbers correctly
For some strange reason, the DSP base image node/object properties
description string stores hexadecimal numbers with a 'h' or 'H' suffix
instead of a '0x' prefix. This causes parsing issue because the
dspbridge atoi() implementation relies on strict_strtoul(), which will
return an error because of the trailing 'h' character.
As the atoi() return value is never checked for an error anyway, replace
strict_strtoul() with simple_strtoul() to ignore the suffix.
This fix gets rid of the following assertion failed messages that were
printed when running the dsp-dummy test application.
Ionut Nicu [Thu, 9 Dec 2010 21:47:37 +0000 (21:47 +0000)]
staging: tidspbridge: rmgr/node.c code cleanup
Reorganized some code in rmgr/node.c to increase its
readability. Most of the changes reduce the code
indentation level and simplifiy the code. No functional
changes were done.
Signed-off-by: Ionut Nicu <ionut.nicu@mindbit.ro> Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Omar Ramirez Luna [Wed, 8 Dec 2010 22:20:23 +0000 (22:20 +0000)]
staging: tidspbridge: use the right type for list_is_last
Removes the following warning:
CC [M] drivers/staging/tidspbridge/rmgr/rmm.o
drivers/staging/tidspbridge/rmgr/rmm.c: In function 'rmm_alloc':
drivers/staging/tidspbridge/rmgr/rmm.c:147: warning: passing
argument 1 of 'list_is_last' from incompatible pointer type
include/linux/list.h:170: note: expected 'const struct list_head *'
but argument is of type 'struct rmm_ovly_sect *'
Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Ionut Nicu <ionut.nicu@mindbit.ro>
Ionut Nicu [Sun, 21 Nov 2010 10:46:28 +0000 (10:46 +0000)]
staging: tidspbridge: core code cleanup
Reorganized some code in the core module to increase its
readability. Most of the changes reduce the code
indentation level and simplifiy the code. No functional
changes were done.
Signed-off-by: Ionut Nicu <ionut.nicu@mindbit.ro> Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
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