Helge Deller [Thu, 1 Mar 2007 04:51:19 +0000 (23:51 -0500)]
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>
Nicolas Ferre [Thu, 1 Mar 2007 04:51:03 +0000 (23:51 -0500)]
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>
Yoichi Yuasa [Sun, 18 Feb 2007 06:50:18 +0000 (01:50 -0500)]
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>
Stefan Lucke [Sun, 18 Feb 2007 06:49:10 +0000 (01:49 -0500)]
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>
Dmitry Torokhov [Sun, 18 Feb 2007 06:44:58 +0000 (01:44 -0500)]
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>
Cyrill V. Gorcunov [Sun, 18 Feb 2007 06:44:02 +0000 (01:44 -0500)]
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>
Dmitry Torokhov [Sun, 18 Feb 2007 06:42:11 +0000 (01:42 -0500)]
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>
Valentin Zagura [Sun, 18 Feb 2007 06:41:27 +0000 (01:41 -0500)]
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>
Philipp Zabel [Sun, 18 Feb 2007 06:40:46 +0000 (01:40 -0500)]
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>
Dmitry Torokhov [Sun, 18 Feb 2007 06:40:37 +0000 (01:40 -0500)]
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>
Dmitry Torokhov [Sun, 18 Feb 2007 06:40:30 +0000 (01:40 -0500)]
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>
Dmitry Torokhov [Sun, 18 Feb 2007 06:40:24 +0000 (01:40 -0500)]
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>
Linus Torvalds [Fri, 16 Feb 2007 16:19:44 +0000 (08:19 -0800)]
Merge branch 'for-linus' of git://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
Linus Torvalds [Fri, 16 Feb 2007 16:17:04 +0000 (08:17 -0800)]
Merge /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
Linus Torvalds [Fri, 16 Feb 2007 16:16:01 +0000 (08:16 -0800)]
Merge /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
Ben Dooks [Fri, 16 Feb 2007 09:28:42 +0000 (01:28 -0800)]
[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>
Thomas Hisch [Fri, 16 Feb 2007 09:28:41 +0000 (01:28 -0800)]
[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>
Michael Halcrow [Fri, 16 Feb 2007 09:28:40 +0000 (01:28 -0800)]
[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>
NeilBrown [Fri, 16 Feb 2007 09:28:38 +0000 (01:28 -0800)]
[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
6527c2bdf1f833cc18e8f42bd97973d583e4aa83
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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:37 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:36 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:34 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:34 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:30 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:30 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:29 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:28 +0000 (01:28 -0800)]
[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>
J. Bruce Fields [Fri, 16 Feb 2007 09:28:27 +0000 (01:28 -0800)]
[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>
Jan Beulich [Fri, 16 Feb 2007 09:28:26 +0000 (01:28 -0800)]
[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>
Randy Dunlap [Fri, 16 Feb 2007 09:28:25 +0000 (01:28 -0800)]
[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>
Ingo Molnar [Fri, 16 Feb 2007 09:28:24 +0000 (01:28 -0800)]
[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>
Ingo Molnar [Fri, 16 Feb 2007 09:28:24 +0000 (01:28 -0800)]
[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>
Paul E. McKenney [Fri, 16 Feb 2007 09:28:22 +0000 (01:28 -0800)]
[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>
john stultz [Fri, 16 Feb 2007 09:28:21 +0000 (01:28 -0800)]
[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>
john stultz [Fri, 16 Feb 2007 09:28:20 +0000 (01:28 -0800)]
[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>
john stultz [Fri, 16 Feb 2007 09:28:19 +0000 (01:28 -0800)]
[PATCH] time: x86_64: split x86_64/kernel/time.c up
In preparation for the x86_64 generic time conversion, this patch splits out
TSC and HPET related code from arch/x86_64/kernel/time.c into respective
hpet.c and tsc.c files.
[akpm@osdl.org: fix printk timestamps]
[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>
john stultz [Fri, 16 Feb 2007 09:28:18 +0000 (01:28 -0800)]
[PATCH] time: x86_64: hpet_address cleanup
In preparation for supporting generic timekeeping, this patch cleans up
x86-64's use of vxtime.hpet_address, changing it to just hpet_address as is
also used in i386. This is necessary since the vxtime structure will be going
away.
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>
john stultz [Fri, 16 Feb 2007 09:28:17 +0000 (01:28 -0800)]
[PATCH] generic: vsyscall-gtod support for GENERIC_TIME
Provides generic infrastructure for vsyscall-gtod.
[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>
Ingo Molnar [Fri, 16 Feb 2007 09:28:16 +0000 (01:28 -0800)]
[PATCH] Add SysRq-Q to print timer_list debug info
Add SysRq-Q to print pending timers and other timer info.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:28:15 +0000 (01:28 -0800)]
[PATCH] Add debugging feature /proc/timer_list
add /proc/timer_list, which prints all currently pending (high-res) timers,
all clock-event sources and their parameters in a human-readable form.
Sample output:
Timer List Version: v0.1
HRTIMER_MAX_CLOCK_BASES: 2
now at
4246046273872 nsecs
cpu: 0
clock 0:
.index: 0
.resolution: 1 nsecs
.get_time: ktime_get_real
.offset:
1273998312645738432 nsecs
active timers:
clock 1:
.index: 1
.resolution: 1 nsecs
.get_time: ktime_get
.offset: 0 nsecs
active timers:
#0: <
f5a90ec8>, hrtimer_sched_tick, hrtimer_stop_sched_tick, swapper/0
# expires at
4246432689566 nsecs [in
386415694 nsecs]
#1: <
f5a90ec8>, hrtimer_wakeup, do_nanosleep, pcscd/2050
# expires at
4247018194689 nsecs [in
971920817 nsecs]
#2: <
f5a90ec8>, hrtimer_wakeup, do_nanosleep, irqbalance/1909
# expires at
4247351358392 nsecs [in
1305084520 nsecs]
#3: <
f5a90ec8>, hrtimer_wakeup, do_nanosleep, crond/2157
# expires at
4249097614968 nsecs [in
3051341096 nsecs]
#4: <
f5a90ec8>, it_real_fn, do_setitimer, syslogd/1888
# expires at
4251329900926 nsecs [in
5283627054 nsecs]
.expires_next :
4246432689566 nsecs
.hres_active : 1
.check_clocks : 0
.nr_events : 31306
.idle_tick :
4246020791890 nsecs
.tick_stopped : 1
.idle_jiffies : 986504
.idle_calls : 40700
.idle_sleeps : 36014
.idle_entrytime :
4246019418883 nsecs
.idle_sleeptime :
4178181972709 nsecs
cpu: 1
clock 0:
.index: 0
.resolution: 1 nsecs
.get_time: ktime_get_real
.offset:
1273998312645738432 nsecs
active timers:
clock 1:
.index: 1
.resolution: 1 nsecs
.get_time: ktime_get
.offset: 0 nsecs
active timers:
#0: <
f5a90ec8>, hrtimer_sched_tick, hrtimer_restart_sched_tick, swapper/0
# expires at
4246050084568 nsecs [in
3810696 nsecs]
#1: <
f5a90ec8>, hrtimer_wakeup, do_nanosleep, atd/2227
# expires at
4261010635003 nsecs [in
14964361131 nsecs]
#2: <
f5a90ec8>, hrtimer_wakeup, do_nanosleep, smartd/2332
# expires at
5469485798970 nsecs [in
1223439525098 nsecs]
.expires_next :
4246050084568 nsecs
.hres_active : 1
.check_clocks : 0
.nr_events : 24043
.idle_tick :
4246046084568 nsecs
.tick_stopped : 0
.idle_jiffies : 986510
.idle_calls : 26360
.idle_sleeps : 22551
.idle_entrytime :
4246043874339 nsecs
.idle_sleeptime :
4170763761184 nsecs
tick_broadcast_mask:
00000003
event_broadcast_mask:
00000001
CPU#0's local event device:
Clock Event Device: lapic
capabilities:
0000000e
max_delta_ns:
807385544
min_delta_ns: 1443
mult:
44624025
shift: 32
set_next_event: lapic_next_event
set_mode: lapic_timer_setup
event_handler: hrtimer_interrupt
.installed: 1
.expires:
4246432689566 nsecs
CPU#1's local event device:
Clock Event Device: lapic
capabilities:
0000000e
max_delta_ns:
807385544
min_delta_ns: 1443
mult:
44624025
shift: 32
set_next_event: lapic_next_event
set_mode: lapic_timer_setup
event_handler: hrtimer_interrupt
.installed: 1
.expires:
4246050084568 nsecs
Clock Event Device: hpet
capabilities:
00000007
max_delta_ns:
2147483647
min_delta_ns: 3352
mult:
61496110
shift: 32
set_next_event: hpet_next_event
set_mode: hpet_set_mode
event_handler: handle_nextevt_broadcast
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:28:13 +0000 (01:28 -0800)]
[PATCH] Add debugging feature /proc/timer_stat
Add /proc/timer_stats support: debugging feature to profile timer expiration.
Both the starting site, process/PID and the expiration function is captured.
This allows the quick identification of timer event sources in a system.
Sample output:
# echo 1 > /proc/timer_stats
# cat /proc/timer_stats
Timer Stats Version: v0.1
Sample period: 4.010 s
24, 0 swapper hrtimer_stop_sched_tick (hrtimer_sched_tick)
11, 0 swapper sk_reset_timer (tcp_delack_timer)
6, 0 swapper hrtimer_stop_sched_tick (hrtimer_sched_tick)
2, 1 swapper queue_delayed_work_on (delayed_work_timer_fn)
17, 0 swapper hrtimer_restart_sched_tick (hrtimer_sched_tick)
2, 1 swapper queue_delayed_work_on (delayed_work_timer_fn)
4, 2050 pcscd do_nanosleep (hrtimer_wakeup)
5, 4179 sshd sk_reset_timer (tcp_write_timer)
4, 2248 yum-updatesd schedule_timeout (process_timeout)
18, 0 swapper hrtimer_restart_sched_tick (hrtimer_sched_tick)
3, 0 swapper sk_reset_timer (tcp_delack_timer)
1, 1 swapper neigh_table_init_no_netlink (neigh_periodic_timer)
2, 1 swapper e1000_up (e1000_watchdog)
1, 1 init schedule_timeout (process_timeout)
100 total events, 25.24 events/sec
[ cleanups and hrtimers support from Thomas Gleixner <tglx@linutronix.de> ]
[bunk@stusta.de: nr_entries can become static]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:12 +0000 (01:28 -0800)]
[PATCH] hrtimers: prevent possible itimer DoS
Fix potential setitimer DoS with high-res timers by pushing itimer rearm
processing to process context.
[Fixes from: Ingo Molnar <mingo@elte.hu>]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:11 +0000 (01:28 -0800)]
[PATCH] hrtimers: add high resolution timer support
Implement high resolution timers on top of the hrtimers infrastructure and the
clockevents / tick-management framework. This provides accurate timers for
all hrtimer subsystem users.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:28:10 +0000 (01:28 -0800)]
[PATCH] i386: enable dynticks in kconfig
Enable dynamic ticks selection.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:09 +0000 (01:28 -0800)]
[PATCH] i386 prepare nmi watchdog for dynticks
The NMI watchdog implementation assumes that the local APIC timer interrupt is
happening. This assumption is not longer true when high resolution timers and
dynamic ticks come into play, as they may switch off the local APIC timer
completely. Take the PIT/HPET interrupts into account too, to avoid false
positives.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@suse.de>
Cc: Zachary Amsden <zach@vmware.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rohit Seth <rohitseth@google.com>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:28:07 +0000 (01:28 -0800)]
[PATCH] i386 prepare for dyntick
Prepare i386 for dyntick: idle handler callbacks.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:06 +0000 (01:28 -0800)]
[PATCH] i386 rework local apic timer calibration
The local apic timer calibration has two problem cases:
1. The calibration is based on readout of the PIT/HPET timer to detect the
wrap of the periodic tick. It happens that a box gets stuck in the
calibration loop due to a PIT with a broken readout function.
2. CoreDuo boxen show a sporadic PIT runs too slow defect, which results
in a wrong lapic calibration. The PIT goes back to normal operation once
the lapic timer is switched to periodic mode.
Both are existing and unfixed problems in the current upstream kernel and
prevent certain laptops and other systems from booting Linux.
Rework the code to address both problems:
- Make the calibration interrupt driven. This removes the wait_timer_tick
magic hackery from lapic.c and time_hpet.c. The clockevents framework
allows easy substitution of the global tick event handler for the
calibration. This is more accurate than monitoring jiffies. At this point
of the boot process, nothing disturbes the interrupt delivery, so the
results are very accurate.
- Verify the calibration against the PM timer, when available by using the
early access function. When the measured calibration period is outside of
an one percent window, then the lapic timer calibration is adjusted to the
pm timer result.
- Verify the calibration by running the lapic timer with the calibration
handler. Disable lapic timer in case of deviation.
This also removes the "synchronization" of the local apic timer to the global
tick. This synchronization never worked, as there is no way to synchronize
PIT(HPET) and local APIC timer. The synchronization by waiting for the tick
just alignes the local APIC timer for the first events, but later the events
drift away due to the different clocks. Removing the "sync" is just
randomizing the asynchronous behaviour at setup time.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Zachary Amsden <zach@vmware.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rohit Seth <rohitseth@google.com>
Cc: Andi Kleen <ak@suse.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:04 +0000 (01:28 -0800)]
[PATCH] clockevents: i386 drivers
Add clockevent drivers for i386: lapic (local) and PIT/HPET (global). Update
the timer IRQ to call into the PIT/HPET driver's event handler and the
lapic-timer IRQ to call into the lapic clockevent driver. The assignement of
timer functionality is delegated to the core framework code and replaces the
compile and runtime evalution in do_timer_interrupt_hook()
Use the clockevents broadcast support and implement the lapic_broadcast
function for ACPI.
No changes to existing functionality.
[ kdump fix from Vivek Goyal <vgoyal@in.ibm.com> ]
[ fixes based on review feedback from Arjan van de Ven <arjan@infradead.org> ]
Cleanups-from: Adrian Bunk <bunk@stusta.de>
Build-fixes-from: Andrew Morton <akpm@osdl.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:03 +0000 (01:28 -0800)]
[PATCH] tick-management: dyntick / highres functionality
With Ingo Molnar <mingo@elte.hu>
Add functions to provide dynamic ticks and high resolution timers. The code
which keeps track of jiffies and handles the long idle periods is shared
between tick based and high resolution timer based dynticks. The dyntick
functionality can be disabled on the kernel commandline. Provide also the
infrastructure to support high resolution timers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:02 +0000 (01:28 -0800)]
[PATCH] tick-management: broadcast functionality
With Ingo Molnar <mingo@elte.hu>
Add broadcast functionality, so per cpu clock event devices can be registered
as dummy devices or switched from/to broadcast on demand. The broadcast
function distributes the events via the broadcast function of the clock event
device. This is primarily designed to replace the switch apic timer to / from
IPI in power states, where the apic stops.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:01 +0000 (01:28 -0800)]
[PATCH] tick-management: core functionality
With Ingo Molnar <mingo@elte.hu>
The tick-management code is the first user of the clockevents layer. It takes
clock event devices from the clock events core and uses them to provide the
periodic tick.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:28:00 +0000 (01:28 -0800)]
[PATCH] clockevents: add core functionality
Architectures register their clock event devices, in the clock events core.
Users of the clockevents core can get clock event devices for their use. The
clockevents core code provides notification mechanisms for various clock
related management events.
This allows to control the clock event devices without the architectures
having to worry about the details of function assignment. This is also a
preliminary for high resolution timers and dynamic ticks to allow the core
code to control the clock functionality without intrusive changes to the
architecture code.
[Fixes-by: Ingo Molnar <mingo@elte.hu>]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:58 +0000 (01:27 -0800)]
[PATCH] i386, apic: clean up the APIC code
The apic code is quite unstructured and missing a lot of comments.
- Restructure the code into helper functions, timer, setup/shutdown,
interrupt and power management blocks.
- Fixup comments.
- Namespace fixups
- Inline helpers for version and is_integrated
- Combine the ack_bad_irq functions
No functional changes.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Zachary Amsden <zach@vmware.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rohit Seth <rohitseth@google.com>
Cc: Andi Kleen <ak@suse.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:57 +0000 (01:27 -0800)]
[PATCH] Allow early access to the power management timer
Allow early access to the power management timer by exposing the verified read
function and providing a helper function which checks the pmtmr_ioport
variable and returns either the pm timer readout or 0 in case the pm timer is
not available.
Create a new header file and replace also the ifdef'ed extern definition in
arch/i386/kernel/acpi/boot.c
This is a preperatory patch for the rework of the local apic timer
calibration.
No functional changes.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:55 +0000 (01:27 -0800)]
[PATCH] ACPI keep track of timer broadcasting
This is a preperatory patch for highres/dyntick:
- replace the big #ifdef ARCH_APICTIMER_STOPS_ON_C3 hackery by functions
- remove the double switch in the power verify function (in the worst case
we switched ipi to apic and 20usec later apic to ipi)
- keep track of the the state which stops local APIC timer
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Len Brown <len.brown@intel.com>
Cc: <linux-acpi@vger.kernel.org>
Cc: Andi Kleen <ak@suse.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:54 +0000 (01:27 -0800)]
[PATCH] ACPI: fix missing include for UP
apic.h does not get included on UP compiles. That way the
APICTIMER_STOPS_ON_C3 is not there and UP boxen have no support for timer
broadcasting. This was never noticed, because the lapic timer is only used
for profiling on UP.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:53 +0000 (01:27 -0800)]
[PATCH] hrtimers: move and add documentation
Move the initial hrtimers.txt document to the new directory
"Documentation/hrtimers"
Add design notes for the high resolution timer and dynamic tick functionality.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:52 +0000 (01:27 -0800)]
[PATCH] hrtimers: clean up callback tracking
Reintroduce ktimers feature "optimized away" by the ktimers review process:
remove the curr_timer pointer from the cpu-base and use the hrtimer state.
No functional changes.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:51 +0000 (01:27 -0800)]
[PATCH] hrtimers; add state tracking
Reintroduce ktimers feature "optimized away" by the ktimers review process:
multiple hrtimer states to enable the running of hrtimers without holding the
cpu-base-lock.
(The "optimized" rbtree hack carried only 2 states worth of information and we
need 4 for high resolution timers and dynamic ticks.)
No functional changes.
Build-fixes-from: Andrew Morton <akpm@osdl.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:50 +0000 (01:27 -0800)]
[PATCH] hrtimers: cleanup locking
Improve kernel/hrtimers.c locking: use a per-CPU base with a lock to control
locking of all clocks belonging to a CPU. This simplifies code that needs to
lock all clocks at once. This makes life easier for high-res timers and
dyntick.
No functional changes.
[ optimization change from Andrew Morton <akpm@osdl.org> ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:49 +0000 (01:27 -0800)]
[PATCH] hrtimers: namespace and enum cleanup
- hrtimers did not use the hrtimer_restart enum and relied on the implict
int representation. Fix the prototypes and the functions using the enums.
- Use seperate name spaces for the enumerations
- Convert hrtimer_restart macro to inline function
- Add comments
No functional changes.
[akpm@osdl.org: fix input driver]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:47 +0000 (01:27 -0800)]
[PATCH] Extend next_timer_interrupt() to use a reference jiffie
For CONFIG_NO_HZ we need to calculate the next timer wheel event based on a
given jiffie value. Extend the existing code to allow the extra 'now'
argument. Provide a compability function for the existing implementations to
call the function with now == jiffies. (This also solves the racyness of the
original code vs. jiffies changing during the iteration.)
No functional changes to existing users of this infrastructure.
[ remove WARN_ON() that triggered on s390, by Carsten Otte <cotte@de.ibm.com> ]
[ made new helper static, Adrian Bunk <bunk@stusta.de> ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:46 +0000 (01:27 -0800)]
[PATCH] Fix cascade lookup of next_timer_interrupt
When searching for the next pending timer in the timer wheel we need to take
the cascade into account. The current code has several problems:
1. it looks into the previous cascade
2. it ignores a pending cascade
3. it ignores multiple cascades
Change the cascade lookup, so it calculates the array index from the point of
the next cascade and always look at the cascade buckets, when the cascade is
pending, i.e. gets executed in the next timer softirq. When multiple
cascades are pending, then lookup the next buckets too.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:27:45 +0000 (01:27 -0800)]
[PATCH] uninline irq_enter()
Uninline irq_enter(). [dynticks adds more stuff to it]
No functional changes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Marcelo Tosatti [Fri, 16 Feb 2007 09:27:44 +0000 (01:27 -0800)]
[PATCH] Mark TSC on GeodeLX reliable
The Geode can safely use the TSC for highres, since:
1) Does not support frequency scaling,
2) The TSC _does_ count when the CPU is halted. Furthermore, the Geode
supports a mode called "suspension on halt", where Suspend mode (which
interacts with the power management states) is entered. TSC counting
during suspend mode is controlled by bit 8 of the Bus Controller
Configuration Register #0 (thanks Tom!).
3) no SMP :)
Check if "RTSC counts during suspension" and remove the requirement for
verification, so the clocksource code can safely select it as an timesource
for the highres timers subsystem.
Signed-off-by: Marcelo Tosatti <marcelo@kvack.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:43 +0000 (01:27 -0800)]
[PATCH] clocksource: Add verification (watchdog) helper
The TSC needs to be verified against another clocksource. Instead of using
hardwired assumptions of available hardware, provide a generic verification
mechanism. The verification uses the best available clocksource and handles
the usability for high resolution timers / dynticks of the clocksource which
needs to be verified.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:42 +0000 (01:27 -0800)]
[PATCH] clocksource: Remove the update callback
The clocksource code allows direct updates of the rating of a given
clocksource now. Change TSC unstable tracking to use this interface and
remove the update callback.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:40 +0000 (01:27 -0800)]
[PATCH] clocksource: fixup is_continous changes on MIPS
Fixup the is_contionous replacement by a flag field.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:39 +0000 (01:27 -0800)]
[PATCH] clocksource: fixup is_continous changes on S390
Fixup the is_contionous replacement by a flag field.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:38 +0000 (01:27 -0800)]
[PATCH] clocksource: fixup is_continous changes on AVR32
Fixup the is_contionous replacement by a flag field.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:37 +0000 (01:27 -0800)]
[PATCH] clocksource: fixup is_continous changes on ARM
Fixup the is_contionous replacement by a flag field.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:36 +0000 (01:27 -0800)]
[PATCH] clocksource: replace is_continuous by a flag field
Using a flag filed allows to encode more than one information into a variable.
Preparatory patch for the generic clocksource verification.
[mingo@elte.hu: convert vmitime.c to the new clocksource flag]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:27:34 +0000 (01:27 -0800)]
[PATCH] x86: rewrite SMP TSC sync code
make the TSC synchronization code more robust, and unify it between x86_64 and
i386.
The biggest change is the removal of the 'fix up TSCs' code on x86_64 and
i386, in some rare cases it was /causing/ time-warps on SMP systems.
The new code only checks for TSC asynchronity - and if it can prove a
time-warp (if it can observe the TSC going backwards when going from one CPU
to another within a critical section), then the TSC clock-source is turned
off.
The TSC synchronization-checking code also got moved into a separate file.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:33 +0000 (01:27 -0800)]
[PATCH] Simplify the registration of clocksources
Enqueue clocksources in rating order to make selection of the clocksource
easier. Also check the match with an user override at enqueue time.
Preparatory patch for the generic clocksource verification.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:32 +0000 (01:27 -0800)]
[PATCH] i386 Remove useless code in tsc.c
The delayed work code in arch/i386/kernel/tsc.c is an unused leftover of the
GTOD conversion. Remove it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
John Stultz [Fri, 16 Feb 2007 09:27:31 +0000 (01:27 -0800)]
[PATCH] i386: use GTOD persistent clock support
Persistent clock support: do proper timekeeping across suspend/resume, i386
arch support.
[bunk@stusta.de: cleanup]
Build-fixes-from: Andrew Morton <akpm@osdl.org>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John Stultz [Fri, 16 Feb 2007 09:27:30 +0000 (01:27 -0800)]
[PATCH] GTOD: persistent clock support
Persistent clock support: do proper timekeeping across suspend/resume.
[bunk@stusta.de: cleanup]
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ingo Molnar [Fri, 16 Feb 2007 09:27:29 +0000 (01:27 -0800)]
[PATCH] Fix timeout overflow with jiffies
Prevent timeout overflow if timer ticks are behind jiffies (due to high
softirq load or due to dyntick), by limiting the valid timeout range to
MAX_LONG/2.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:27:28 +0000 (01:27 -0800)]
[PATCH] Fix multiple conversion bugs in msecs_to_jiffies
Fix multiple conversion bugs in msecs_to_jiffies().
The main problem is that this condition:
if (m > jiffies_to_msecs(MAX_JIFFY_OFFSET))
overflows if HZ is smaller than 1000!
This change is user-visible: for HZ=250 SUS-compliant poll()-timeout
value of -20 is mistakenly converted to 'immediate timeout'.
(The new dyntick code also triggered this, that's how we noticed.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
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>
Ingo Molnar [Fri, 16 Feb 2007 09:27:27 +0000 (01:27 -0800)]
[PATCH] Uninline jiffies.h functions
There are loads of fat functions hidden in jiffies.h. Uninline them. No code
changes.
[jeremy@goop.org: export fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
john stultz [Fri, 16 Feb 2007 09:27:26 +0000 (01:27 -0800)]
[PATCH] HZ free ntp
Distangle the NTP update from HZ. This is necessary for dynamic tick enabled
kernels.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:25 +0000 (01:27 -0800)]
[PATCH] Add a function to handle interrupt affinity setting
Provide funtions to:
- check, whether an interrupt can set the affinity
- pin the interrupt to a given cpu
Necessary for the ability to setup clocksources more flexible (e.g. use the
different HPET channels per CPU)
[akpm@osdl.org: alpha build fix]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Thomas Gleixner [Fri, 16 Feb 2007 09:27:24 +0000 (01:27 -0800)]
[PATCH] Add irq flag to disable balancing for an interrupt
Add a flag so we can prevent the irq balancing of an interrupt. Move the
bits, so we have room for more :)
Necessary for the ability to setup clocksources more flexible (e.g. use the
different HPET channels per CPU)
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
Andrew Morton [Fri, 16 Feb 2007 09:27:23 +0000 (01:27 -0800)]
[PATCH] vmi-versus-hrtimers
arch/i386/kernel/built-in.o: In function `vmi_stop_hz_timer':
: undefined reference to `next_timer_interrupt'
If CONFIG_NO_HZ, next_timer_interrupt() doesn't exist (and presumably doesn't
make sense).
Perhaps VMI shouildn't be playing with timer internals at this level.
Cc: Zachary Amsden <zach@vmware.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Adrian Bunk [Fri, 16 Feb 2007 09:27:22 +0000 (01:27 -0800)]
[PATCH] correct CONFIG_GIGASET_M101 Makefile entry
Advanced Mathematics, lesson 1:
101 != 105
;-)
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Fri, 16 Feb 2007 09:27:21 +0000 (01:27 -0800)]
[PATCH] uml: fix 2.6.20 hang
A previous cleanup misused need_poll, which had a fairly broken interface.
It implemented a growable array, changing the used elements count itself,
but leaving it up to the caller to fill in the actual elements, including
the entire array if the array had to be reallocated. This worked because
the previous users were switching between two such structures, and the
elements were copied from the inactive array to the active array after
making sure the active array had enough room.
maybe_sigio_broken was made to use need_poll, but it was operating on a
single array, so when the buffer was reallocated, the previous contents
were lost.
This patch makes need_poll implement more sane semantics. It merely
assures that the array is of the proper size and that the contents are
preserved. It is up to the caller to adjust the used elements count and to
ensure that the proper elements are resent.
This manifested itself as a hang in 2.6.20 as the uninitialized buffer
convinced UML that one of its own file descriptors didn't support SIGIO and
needed to be watched by poll in a separate thread. The result was an
interrupt flood as control traffic over this descriptor sparked interrupts,
which resulted in more control traffic, ad nauseum.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dmitriy Monakhov [Fri, 16 Feb 2007 09:27:18 +0000 (01:27 -0800)]
[PATCH] __page_symlink retry loop error code fix
If prepare_write or commit_write return AOP_TRUNCATED_PAGE we jump to
"retry" label and than if find_or_create_page() failed function return
incorrect error code.
Signed-off-by: Dmitriy Monakhov <dmonakhov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Frederik Deweerdt [Fri, 16 Feb 2007 09:27:15 +0000 (01:27 -0800)]
[PATCH] pci_iomap_regions() error handling fix
It appears that the pcim_iomap_regions() function doesn't get the error
handling right. It BUGs early at boot with a backtrace along the lines of:
ahci_init
pci_register_driver
driver_register
[...]
ahci_init_one
pcim_iomap_region
pcim_iounmap
The following patch allows me to boot. Only the if(mask..) continue;
part fixes the problem actually, the gotos where changed so that we
don't try to unmap something we couldn't map anyway.
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Brownell [Fri, 16 Feb 2007 09:27:14 +0000 (01:27 -0800)]
[PATCH] GPIO core documentation
Small updates to the GPIO documentation, addressing feedback and
fixing a few spelling errors.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Haavard Skinnemoen [Fri, 16 Feb 2007 12:56:11 +0000 (13:56 +0100)]
[AVR32] Use per-controller spi_board_info structures
Set up one spi_board_info array per controller and pass this to
at32_add_device_spi so that it can set up any GPIO pins for chip
selects based on this information.
Extracted from a patch by David Brownell and adapted slightly.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Haavard Skinnemoen [Fri, 16 Feb 2007 12:19:47 +0000 (13:19 +0100)]
[AVR32] Warn, don't BUG if clk_disable is called too many times
Print a helpful warning along with a stack dump if clk_disable is
called on a already-disabled clock. Remove the BUG_ON().
Extracted from a patch by David Brownell.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Haavard Skinnemoen [Fri, 16 Feb 2007 12:14:33 +0000 (13:14 +0100)]
[AVR32] Make sure all genclocks have a parent
Initialize the parent field of each generic clock by looking at the
PM registers. This means that the genclock operations can always
assume that the parent field is non-null, so they don't have to
check. Also remove a few unnecessary BUG_ON()s.
Extracted from a patch by David Brownell.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Haavard Skinnemoen [Thu, 15 Feb 2007 15:22:17 +0000 (16:22 +0100)]
[AVR32] Remove unnecessary sys_nfsservctl conditional
kernel/sys_ni.c defines sys_nfsservctl as a weak alias for
sys_ni_syscall, so it's always safe to include it in the system
call table.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Haavard Skinnemoen [Thu, 15 Feb 2007 09:01:11 +0000 (10:01 +0100)]
[AVR32] Wire up the SysV IPC calls properly
Wire up the individual sysvipc system calls and remove sys_ipc.
Strictly speaking, this breaks the ABI, but since sys_ipc never
worked anyway due to a silly bug, it isn't actually a regression.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Haavard Skinnemoen [Fri, 16 Feb 2007 11:53:57 +0000 (12:53 +0100)]
[AVR32] Define ioremap_nocache, ioport_map and ioport_unmap
These are all defined in terms of ioremap/iounmap since port I/O
isn't really different from memory-mapped I/O on AVR32.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Haavard Skinnemoen [Fri, 16 Feb 2007 11:47:40 +0000 (12:47 +0100)]
[AVR32] Fix prototypes for __raw_writesb and friends
The first parameter to __raw_writes[bwl] and __raw_reads[bwl] should
be a void __iomem *, not unsigned long.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Nate Dailey [Thu, 15 Feb 2007 23:13:46 +0000 (18:13 -0500)]
sata_vsc: use default cache line size if non-zero
This modifies drivers/ata/sata_vsc.c to only set the cache line size
to 0x80 if the default value is zero. Apparently zero isn't allowed
due to a bug in the chip, but I've found performance is much better
with the (non-zero) default instead of 0x80.
[note1: "default" means BIOS-programmed value, in this context -jgarzik]
[note2: superfluous braces were removed from the patch -jg]
Signed-off-by: Nate Dailey <nate.dailey@stratus.com>
Signed-off-by: Jeremy Higdon <jeremy@sgi.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Robert Hancock [Mon, 12 Feb 2007 00:36:56 +0000 (18:36 -0600)]
sata_nv: handle SError status indication
ADMA-capable controllers provide a bit in the status register that appears
to indicate that the controller detected an SError condition. Update sata_nv
to detect this and trigger error handling in order to handle the fault.
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Olaf Hering [Sat, 10 Feb 2007 20:36:14 +0000 (21:36 +0100)]
add delay around sl82c105_reset_engine calls
The hald media changed polling does really confuse things.
Noone knows why the delays are needed, but they give us access to the CD.
An udelay(50) will give reliable access to the drive, but there is still
one (or more) EH reset. The drive works without EH resets with udelay(100).
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Zhang, Yanmin [Fri, 9 Feb 2007 03:29:51 +0000 (11:29 +0800)]
ATA convert GSI to irq on ia64
If an ATA drive uses legacy mode, ata driver will choose 14 and 15
as the fixed irq number. On ia64 platform, such numbers are GSI and
should be converted to irq vector.
Below patch against kernel 2.6.20 fixes it.
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>