Commit Graph

48686 Commits

Author SHA1 Message Date
Dmitry Torokhov
d542ed82fd Input: handlers - handle errors from input_open_device()
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-04-12 01:30:15 -04:00
Dmitry Torokhov
d0ffb9be86 Input: handlers - rename 'list' to 'client'
The naming convention in input handlers was very confusing -
client stuctures were called lists, regular lists were also
called lists making anyone looking at the code go mad.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-04-12 01:30:00 -04:00
Dmitry Torokhov
5b2a08262a Input: rework handle creation code
- consolidate code for binding handlers to a device
 - return error codes from handlers connect() methods back to input
   core and log failures

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-04-12 01:29:46 -04:00
Dmitry Torokhov
6e782584e0 Input: i8042 - add HP Pavilion DV4017EA to the MUX blacklist
This should get rid of "atkbd.c: Suprious NAK on isa0060/serio0"
messages caused by broken MUX implementation. The box does not
have external PS/2 ports so disabling MUX mode is safe.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-16 00:59:42 -04:00
Helge Deller
9575499dfe Input: HIL - fix rwlock recursion bug
The following bug happens when insmoding hp_sdc_mlc.ko:

    HP SDC MLC: Registering the System Domain Controller's HIL MLC.
    BUG: rwlock recursion on CPU#0, hotplug/1814, 00854734
    Backtrace:
     [<10267560>] _raw_write_lock+0x50/0x88
     [<10104008>] _write_lock_irqsave+0x14/0x24
     [<008537d4>] hp_sdc_mlc_out+0x38/0x25c [hp_sdc_mlc]
     [<0084ebd8>] hilse_donode+0x308/0x470 [hil_mlc]
     [<0084ed80>] hil_mlcs_process+0x40/0x6c [hil_mlc]
     [<10130f80>] tasklet_action+0x78/0xb8
     [<10130cec>] __do_softirq+0x60/0xcc
     [<1010428c>] __lock_text_end+0x38/0x48
     [<10108348>] do_cpu_irq_mask+0xf0/0x11c
     [<1010b068>] intr_return+0x0/0xc

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-16 00:59:29 -04:00
Rodolfo Giometti
5a90e5bca9 Input: add support for PXA27x keyboard controller
Signed-off-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-16 00:58:52 -04:00
Peter Osterlund
867d2682e9 Input: sermouse - improve protocol error recovery
When using MS protocol the driver should wait for a byte with
bit 6 set before assuming that it sees beginning of a data packet.
This should allow driver better cope with lost bytes and prevent
spurious left/right button events when serial communication is
disturbed by a CPU-hungry real-time process.

Also fix some formatting.

Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-16 00:58:37 -04:00
Dmitry Torokhov
54f9e36cb8 Input: simplify input_free_device()
Now that sysfs attributes that were marked for deletion can't access
their devices we do not need to set name, phys and uniq to NULL.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-16 00:57:25 -04:00
Marvin Raaijmakers
c8e4c77277 Input: add getkeycode and setkeycode methods
Allow drivers to implement their own get and set keycode methods. This
will allow drivers to change their keymaps without allocating huge
tables covering entire range of possible scancodes.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-14 22:50:42 -04:00
Andres Salomon
55e3d9224b Input: psmouse - allow disabing certain protocol extensions
Allow ALPS, LOGIPS2PP, LIFEBOOK, TRACKPOINT and TOUCHKIT protocol
extensions of psmouse to be disabled during compilation. This will
allow users save some memory when they are sure that they will only
use a certain type of mice.

Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-10 01:39:54 -05:00
Dmitry Torokhov
cb9def4dff Input: let driver core create class device attribute groups
Rely on device core to create attribute groups for input devices
instead of open-coding it.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-07 23:20:26 -05:00
Dmitry Torokhov
15e03ae811 Input: export 'uniq' in /proc/bus/input/devices
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-07 23:20:17 -05:00
Eric Piel
bc413c9563 Input: wistron - add support for TravelMate 610
Add support for Acer TravelMate 610 to wistron_btns. All special keys
are detected, but the 2 leds are not handled (yet).

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-07 01:45:16 -05:00
Dmitry Torokhov
243db53bbd Input: psmouse - do not force stream mode
Forcing stream mode after reset confuses some devices (reported
by Andrea Arcangeli) so let's take it out - spec says that after
reset mouse should already be in stream mode.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-07 01:44:59 -05:00
Helge Deller
ffd51f46cd Input: HIL - cleanup coding style
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-28 23:51:29 -05:00
Helge Deller
3acaf540a3 Input: HIL - various fixes for HIL drivers
- mark some structures const or __read_mostly
 - hilkbd.c: fix uninitialized spinlock in HIL keyboard driver
 - hil_mlc.c: use USEC_PER_SEC instead of 1000000
 - hp_sdc: bugfix for request_irq()/free_irq() parameters, this prevented
           multiple load/unload cycles as module

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-28 23:51:19 -05:00
Nicolas Ferre
969111e900 Input: ads7846 - add support for the ads7843 touchscreen
The ads7843 support has now become almost trivial since the last
rework.

Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-28 23:51:03 -05:00
Yoichi Yuasa
bebb8a2bc1 Input: add driver for MIPS Cobalt back panel buttons
Tested on Cobalt Qube2.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:50:18 -05:00
Stefan Lucke
24bf10ab2d Input: psmouse - add support for eGalax PS/2 touchscreen controller
Based on the touchkit USB and lifebook PS/2 touchscreen driver.

The egalax touchsreen controller (PS/2 or USB version) is used in this 7"
device: http://www.cartft.com/catalog/il/449

Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:49:10 -05:00
Dmitry Torokhov
62b529a7b9 Input: remove obsolete setup parameters from input drivers
They have been marked as __obsolete_setup() for several years,
it is time for them to go.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:44:58 -05:00
Cyrill V. Gorcunov
2a575f11fb Input: HIL - fix improper call to release_region()
Do not call release_region() if the code has been compiled
without CONFIG_HP300 support.

Signed-off-by: Cyrill V. Gorcunov <gorcunov@gmail.com>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:44:02 -05:00
Dmitry Torokhov
00a8691ca6 Input: hid-lgff - treat devices as joysticks unless told otherwise
By default threat devices as joysticks with constant force-feedback
effect.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:42:11 -05:00
Valentin Zagura
130b1ab3f3 Input: HID - add support for Logitech Formula Force EX
Signed-off-by: Johann Deneux <johann.deneux@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:41:27 -05:00
Philipp Zabel
0d98f6bbd8 Input: gpio-keys - switch to common GPIO API
This adds support for at least SA1100 and S3C24xx CPUs.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:40:46 -05:00
Dmitry Torokhov
1efa770f8e Input: do not lock device when showing name, phys and uniq
Now that sysfs attributes return -ENODEV once driver requests their
removal we do not need to handle scenario when data is deleted from
under our feet and can simplify the code.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:40:37 -05:00
Dmitry Torokhov
82dd9eff4b Input: i8042 - let serio bus suspend ports
Let serio subsystem take care of suspending the ports; concentrate
on suspending/resuming the controller itself.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:40:30 -05:00
Dmitry Torokhov
a1cec06177 Input: psmouse - properly reset mouse on shutdown/suspend
Some people report that they need psmouse module unloaded
for suspend to ram/disk to work properly. Let's make port
cleanup behave the same way as driver unload.

This fixes "bad state" roblem on various HP laptops, such
as nx7400.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:40:24 -05:00
Linus Torvalds
8a03d9a498 Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32
* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32:
  [AVR32] Use per-controller spi_board_info structures
  [AVR32] Warn, don't BUG if clk_disable is called too many times
  [AVR32] Make sure all genclocks have a parent
  [AVR32] Remove unnecessary sys_nfsservctl conditional
  [AVR32] Wire up the SysV IPC calls properly
  [AVR32] Define ioremap_nocache, ioport_map and ioport_unmap
  [AVR32] Fix prototypes for __raw_writesb and friends
2007-02-16 08:19:44 -08:00
Linus Torvalds
f8abea8f8c Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart
* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart:
  [AGPGART] allow drm populated agp memory types cleanups
  [AGPGART] intel-agp: Use ARRAY_SIZE macro when appropriate
  [AGPGART] Add agp-type-to-mask-type method missing from some drivers.
  [AGPGART] Don't try to remap i810 registers on resume.
  [AGPGART] Allow drm-populated agp memory types
  [AGPGART] compat ioctl
2007-02-16 08:17:04 -08:00
Linus Torvalds
ef29498655 Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Longhaul - Redo Longhaul ver. 2
  [CPUFREQ] EPS - Correct 2nd brand test
  [CPUFREQ] Longhaul - Separate frequency and voltage transition
  [CPUFREQ] Longhaul - Models of Nehemiah
  [CPUFREQ] Whitespace fixup
  [CPUFREQ] Longhaul - Simplier minmult
  [CPUFREQ] CPU_FREQ_TABLE shouldn't be a def_tristate
  [CPUFREQ] ondemand governor use new cpufreq rwsem locking in work callback
  [CPUFREQ] ondemand governor restructure the work callback
  [CPUFREQ] Rewrite lock in cpufreq to eliminate cpufreq/hotplug related issues
  [CPUFREQ] Remove hotplug cpu crap
  [CPUFREQ] Enhanced PowerSaver driver
  [CPUFREQ] Longhaul - Add VT8235 support
  [CPUFREQ] Longhaul - Fix guess_fsb function
  [CPUFREQ] Longhaul - Remove duplicate tables
  [CPUFREQ] Longhaul - Introduce Nehemiah C
  [CPUFREQ] fix cpuinfo_cur_freq for CPU_HW_PSTATE
  [CPUFREQ] Longhaul - Remove "ignore_latency" option
2007-02-16 08:16:01 -08:00
Ben Dooks
0187f221e9 [PATCH] s3c2410fb: fix un-initialised dev field
The current driver is not setting the dev field in the private data
structure, which can lead to an OOPS if the driver tries to report an
error.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: James Simmons <jsimmons@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
Thomas Hisch
008983d966 [PATCH] ecryptfs: fix forgotten format specifier
Add format specifier %d for uid in ecryptfs_printk

Signed-off-by: Thomas Hisch <t.hisch@gmail.com>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
Michael Halcrow
eb95e7ffa5 [PATCH] eCryptfs: Reduce stack usage in ecryptfs_generate_key_packet_set()
eCryptfs is gobbling a lot of stack in ecryptfs_generate_key_packet_set()
because it allocates a temporary memory-hungry ecryptfs_key_record struct.
This patch introduces a new kmem_cache for that struct and converts
ecryptfs_generate_key_packet_set() to use it.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
NeilBrown
29dbb3fc80 [PATCH] knfsd: stop NFSD writes from being broken into lots of little writes to filesystem
When NFSD receives a write request, the data is typically in a number of
1448 byte segments and writev is used to collect them together.

Unfortunately, generic_file_buffered_write passes these to the filesystem
one at a time, so an e.g.  32K over-write becomes a series of partial-page
writes to each page, causing the filesystem to have to pre-read those pages
- wasted effort.

generic_file_buffered_write handles one segment of the vector at a time as
it has to pre-fault in each segment to avoid deadlocks.  When writing from
kernel-space (and nfsd does) this is not an issue, so
generic_file_buffered_write does not need to break and iovec from nfsd into
little pieces.

This patch avoids the splitting when  get_fs is KERNEL_DS as it is
from NFSd.

This issue was introduced by commit 6527c2bdf1

Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Norman Weathers <norman.r.weathers@conocophillips.com>
Cc: Vladimir V. Saveliev <vs@namesys.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
3160a711ef [PATCH] knfsd: nfsd4: fix handling of directories without default ACLs
When setting an ACL that lacks inheritable ACEs on a directory, we should set
a default ACL of zero length, not a default ACL with all bits denied.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
bec50c47aa [PATCH] knfsd: nfsd4: acls: avoid unnecessary denies
We're inserting deny's between some ACEs in order to enforce posix draft acl
semantics which prevent permissions from accumulating across entries in an
acl.

That's fine, but we're doing that by inserting a deny after *every* allow,
which is overkill.  We shouldn't be adding them in places where they actually
make no difference.

Also replaced some helper functions for creating acl entries; I prefer just
assigning directly to the struct fields--it takes a few more lines, but the
field names provide some documentation that I think makes the result easier
understand.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
f43daf6787 [PATCH] knfsd: nfsd4: acls: don't return explicit mask
Return just the effective permissions, and forget about the mask.  It isn't
worth the complexity.

WARNING: This breaks backwards compatibility with overly-picky nfsv4->posix
acl translation, as may has been included in some patched versions of libacl.
To our knowledge no such version was every distributed by anyone outside citi.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
f34f924274 [PATCH] knfsd: nfsd4: fix error return on unsupported acl
We should be returning ATTRNOTSUPP, not NOTSUPP, when acls are unsupported.

Also fix a comment.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
a4db5fe5df [PATCH] knfsd: nfsd4: fix memory leak on kmalloc failure in savemem
The wrong pointer is being kfree'd in savemem() when defer_free returns with
an error.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
28e05dd845 [PATCH] knfsd: nfsd4: represent nfsv4 acl with array instead of linked list
Simplify the memory management and code a bit by representing acls with an
array instead of a linked list.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
575a6290f0 [PATCH] knfsd: nfsd4: simplify nfsv4->posix translation
The code that splits an incoming nfsv4 ACL into inheritable and effective
parts can be combined with the the code that translates each to a posix acl,
resulting in simpler code that requires one less pass through the ACL.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
7bdfa68c5e [PATCH] knfsd: nfsd4: relax checking of ACL inheritance bits
The rfc allows us to be more permissive about the ACL inheritance bits we
accept:

	"If the server supports a single "inherit ACE" flag that applies to
	both files and directories, the server may reject the request
	(i.e., requiring the client to set both the file and directory
	inheritance flags). The server may also accept the request and
	silently turn on the ACE4_DIRECTORY_INHERIT_ACE flag."

Let's take the latter option--the ACL is a complex attribute that could be
rejected for a wide variety of reasons, and the protocol gives us little
ability to explain the reason for the rejection, so erroring out is a
user-unfriendly last resort.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
J. Bruce Fields
f534a257ac [PATCH] knfsd: nfsd4: fix non-terminated string
The server name is expected to be a null-terminated string, so we can't pass
in the raw client identifier.

What's more, the client identifier is just a binary, not necessarily
printable, blob.  Let's just use the ip address instead.  The server name
appears to exist just to help debugging by making some printk's more
informative.

Note that the string is copies into the rpc client structure, so the pointer
to the local variable does not outlive the function call.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:01 -08:00
Jan Beulich
5575ddf75c [PATCH] small irq management simplification
Use mask_ack_irq() where possible.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00
Randy Dunlap
472900b8b0 [PATCH] IRQ kernel-doc fixes
Fix kernel-doc warnings in IRQ management.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00
Ingo Molnar
d7e25f3394 [PATCH] genirq: remove IRQ_DISABLED
Now that disable_irq() defaults to delayed-disable semantics, the IRQ_DISABLED
flag is not needed anymore.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00
Ingo Molnar
76d2160147 [PATCH] genirq: do not mask interrupts by default
Never mask interrupts immediately upon request.  Disabling interrupts in
high-performance codepaths is rare, and on the other hand this change could
recover lost edges (or even other types of lost interrupts) by conservatively
only masking interrupts after they happen.  (NOTE: with this change the
highlevel irq-disable code still soft-disables this IRQ line - and if such an
interrupt happens then the IRQ flow handler keeps the IRQ masked.)

Mark i8529A controllers as 'never loses an edge'.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00
Paul E. McKenney
1f2ea0837d [PATCH] posix timers: RCU optimization for clock_gettime()
Use RCU to avoid the need to acquire tasklist_lock in the single-threaded
case of clock_gettime().  It still acquires tasklist_lock when for a
(potentially multithreaded) process.  This change allows realtime
applications to frequently monitor CPU consumption of individual tasks, as
requested (and now deployed) by some off-list users.

This has been in Ingo Molnar's -rt patchset since late 2005 with no
problems reported, and tests successfully on 2.6.20-rc6, so I believe that
it is long-since ready for mainline adoption.

[paulmck@linux.vnet.ibm.com: fix exit()/posix_cpu_clock_get() race spotted by Oleg]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00
john stultz
7460ed2844 [PATCH] time: x86_64: re-enable vsyscall support for x86_64
Cleanup and re-enable vsyscall gettimeofday using the generic clocksource
infrastructure.

[akpm@osdl.org: cleanup]
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00
john stultz
1489939f0a [PATCH] time: x86_64: convert x86_64 to use GENERIC_TIME
This patch converts x86_64 to use the GENERIC_TIME infrastructure and adds
clocksource structures for both TSC and HPET (ACPI PM is shared w/ i386).

[akpm@osdl.org: fix printk timestamps]
[akpm@osdl.org: fix printk ckeanups]
[akpm@osdl.org: hpet build fix]
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00