08 Jun, 2009
1 commit
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Change the name of the Kernel CAPI exported function capi_ctr_reseted()
to something representing its purpose better.Impact: renaming, no functional change
Signed-off-by: Tilman Schmidt
Signed-off-by: David S. Miller
04 Jun, 2009
3 commits
-
Add some blurb about /dev/rfkill to the documentation and
fix the "transmiter" spelling error.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
The new code added by this patch will make rfkill create
a misc character device /dev/rfkill that userspace can use
to control rfkill soft blocks and get status of devices as
well as events when the status changes.Using it is very simple -- when you open it you can read
a number of times to get the initial state, and every
further read blocks (you can poll) on getting the next
event from the kernel. The same structure you read is
also used when writing to it to change the soft block of
a given device, all devices of a given type, or all
devices.This also makes CONFIG_RFKILL_INPUT selectable again in
order to be able to test without it present since its
functionality can now be replaced by userspace entirely
and distros and users may not want the input part of
rfkill interfering with their userspace code. We will
also write a userspace daemon to handle all that and
consequently add the input code to the feature removal
schedule.In order to have rfkilld support both kernels with and
without CONFIG_RFKILL_INPUT (or new kernels after its
eventual removal) we also add an ioctl (that only exists
if rfkill-input is present) to disable rfkill-input.
It is not very efficient, but at least gives the correct
behaviour in all cases.Signed-off-by: Johannes Berg
Acked-by: Marcel Holtmann
Signed-off-by: John W. Linville -
This patch completely rewrites the rfkill core to address
the following deficiencies:* all rfkill drivers need to implement polling where necessary
rather than having one central implementation* updating the rfkill state cannot be done from arbitrary
contexts, forcing drivers to use schedule_work and requiring
lots of code* rfkill drivers need to keep track of soft/hard blocked
internally -- the core should do this* the rfkill API has many unexpected quirks, for example being
asymmetric wrt. alloc/free and register/unregister* rfkill can call back into a driver from within a function the
driver called -- this is prone to deadlocks and generally
should be avoided* rfkill-input pointlessly is a separate module
* drivers need to #ifdef rfkill functions (unless they want to
depend on or select RFKILL) -- rfkill should provide inlines
that do nothing if it isn't compiled in* the rfkill structure is not opaque -- drivers need to initialise
it correctly (lots of sanity checking code required) -- instead
force drivers to pass the right variables to rfkill_alloc()* the documentation is hard to read because it always assumes the
reader is completely clueless and contains way TOO MANY CAPS* the rfkill code needlessly uses a lot of locks and atomic
operations in locked sections* fix LED trigger to actually change the LED when the radio state
changes -- this wasn't done beforeTested-by: Alan Jenkins
Signed-off-by: Henrique de Moraes Holschuh [thinkpad]
Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
01 Jun, 2009
2 commits
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Add 'autoconf' and 'disable_ipv6' parameters to the IPv6 module.
The first controls if IPv6 addresses are autoconfigured from
prefixes received in Router Advertisements. The IPv6 loopback
(::1) and link-local addresses are still configured.The second controls if IPv6 addresses are desired at all. No
IPv6 addresses will be added to any interfaces.Signed-off-by: Brian Haley
Signed-off-by: David S. Miller -
This patch adds a generic driver for SJA1000 chips on the OpenFirmware
platform bus found on embedded PowerPC systems. You need a SJA1000 node
definition in your flattened device tree source (DTS) file similar to:can@3,100 {
compatible = "nxp,sja1000";
reg = ;
interrupts = ;
interrupt-parent = ;
nxp,external-clock-frequency = ;
};See also Documentation/powerpc/dts-bindings/can/sja1000.txt.
CC: devicetree-discuss@ozlabs.org
Signed-off-by: Wolfgang Grandegger
Signed-off-by: David S. Miller
21 May, 2009
1 commit
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Moving information from config_interface to bss_info_changed
removed struct ieee80211_if_conf which the documentation still
refers to, additionally there's one kernel-doc description too
much and one other missing, fix all this.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
19 May, 2009
3 commits
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New packet socket feature that makes packet socket more efficient for
transmission.- It reduces number of system call through a PACKET_TX_RING mechanism,
based on PACKET_RX_RING (Circular buffer allocated in kernel space
which is mmapped from user space).- It minimizes CPU copy using fragmented SKB (almost zero copy).
Signed-off-by: Johann Baudy
Signed-off-by: David S. Miller -
Conflicts:
drivers/scsi/fcoe/fcoe.c -
This patch documents the CAN netowrk device drivers interface, removes
obsolete documentation and adds some useful links to CAN resources.Signed-off-by: Wolfgang Grandegger
Signed-off-by: Oliver Hartkopp
Signed-off-by: David S. Miller
18 May, 2009
3 commits
-
Signed-off-by: Wang Tinggong
Signed-off-by: David S. Miller -
Drop the kernel config option GIGASET_UNDOCREQ, permanently
activating the code it controlled, as there have been no reports
of problems caused by its activation but many problems caused by
it being disabled.
Also fix a few bad comments while we're at it.Impact: cleanup
Signed-off-by: Tilman Schmidt
Signed-off-by: David S. Miller -
Mention handling of unregisteted DECT wireless datasets in README.gigaset.
Signed-off-by: Tilman Schmidt
Signed-off-by: David S. Miller
15 May, 2009
3 commits
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* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdb: gdb documentation fix
kgdb,i386: use address that SP register points to in the exception frame
sysrq, intel_fb: fix sysrq g collision -
gdb command "set remote debug 1" is not valid, change to correct command.
Signed-off-by: Frank Rowand
Signed-off-by: Jason Wessel -
This reverts commit fafd688e4c0c34da0f3de909881117d374e4c7af.
Work is progressing to switch away from pdflush as the process backing
for flushing out dirty data. So it seems pointless to add more knobs
to control pdflush threads. The original author of the patch did not
have any specific use cases for adding the knobs, so we can easily
revert this before 2.6.30 to avoid having to maintain this API
forever.Signed-off-by: Jens Axboe
09 May, 2009
1 commit
-
Signed-off-by: Henrik Austad
Signed-off-by: Randy Dunlap
Cc: Greg Kroah-Hartman
Signed-off-by: Greg Kroah-Hartman
07 May, 2009
2 commits
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Change last "i386" to X86-32 as is used throughout the rest of the file.
Change combination of X86-32,X86-64 to just X86, as is done throughout the
rest of the file.Add a note that hyphens and underscores are equivalent in parameter names,
with examples.Signed-off-by: Randy Dunlap
Cc: Jan Engelhardt
Cc: Christopher Sylvain
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
kernel boot parameter `hashdist' now defaults on for all 64bit NUMA.
Signed-off-by: Hugh Dickins
Acked-by: Mel Gorman
Acked-by: David S. Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 May, 2009
1 commit
-
…/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
kernel/posix-cpu-timers.c: fix sparse warning
dma-debug: remove broken dma memory leak detection for 2.6.30
locking: Documentation: lockdep-design.txt, fix note of state bits
05 May, 2009
1 commit
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This should be very safe compared with full enabled, so I see
no reason why it shouldn't be done right away. As ECN can only
be negotiated if the SYN sending party is also supporting it,
somebody in the loop probably knows what he/she is doing. If
SYN does not ask for ECN, the server side SYN-ACK is identical
to what it is without ECN. Thus it's quite safe.The chosen value is safe w.r.t to existing configs which
choose to currently set manually either 0 or 1 but
silently upgrades those who have not explicitly requested
ECN off.Whether to just enable both sides comes up time to time but
unless that gets done now we can at least make the servers
aware of ECN already. As there are some known problems to occur
if ECN is enabled, it's currently questionable whether there's
any real gain from enabling clients as servers mostly won't
support it anyway (so we'd hit just the negative sides). After
enabling the servers and getting that deployed, the client end
enable really has some potential gain too.Signed-off-by: Ilpo Järvinen
Signed-off-by: David S. Miller
03 May, 2009
5 commits
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: document the multi-touch (MT) protocol
Input: add detailed multi-touch finger data report protocol
Input: allow certain EV_ABS events to bypass all filtering
Input: bcm5974 - add documentation for the driver
Input: bcm5974 - augment debug information
Input: bcm5974 - Add support for the Macbook 5 (Unibody)
Input: bcm5974 - add quad-finger tapping
Input: bcm5974 - prepare for a new trackpad header type
Input: appletouch - fix DMA to/from stack buffer
Input: wacom - fix TabletPC touch bug
Input: lifebook - add DMI entry for Fujitsu B-2130
Input: ALPS - add signature for Toshiba Satellite Pro M10
Input: elantech - make sure touchpad is really in absolute mode
Input: elantech - provide a workaround for jumpy cursor on firmware 2.34
Input: ucb1400 - use disable_irq_nosync() in irq handler
Input: tsc2007 - use disable_irq_nosync() in irq handler
Input: sa1111ps2 - use disable_irq_nosync() in irq handlers
Input: omap-keypad - use disable_irq_nosync() in irq handler -
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
kbuild, modpost: Check the section flags, to catch missing "ax"/"aw"
kbuild: fix comment in modpost.c
kbuild: fix scripts/setlocalversion with git
kbuild: fix Module.markers permission error under cygwin
docs: also clean index.html
kbuild: remove a tag file before it is regenerated
kbuild: "make prepare" should be "make modules_prepare"
kbuild: clean Module.markers and modules.order for out-of-tree modules
avr32: drop unused CLEAN_FILES -
Avoid setting less than two pages for vm_dirty_bytes: this is necessary to
avoid potential division by 0 (like the following) in get_dirty_limits().[ 49.951610] divide error: 0000 [#1] PREEMPT SMP
[ 49.952195] last sysfs file: /sys/devices/pci0000:00/0000:00:01.1/host0/target0:0:0/0:0:0:0/block/sda/uevent
[ 49.952195] CPU 1
[ 49.952195] Modules linked in: pcspkr
[ 49.952195] Pid: 3064, comm: dd Not tainted 2.6.30-rc3 #1
[ 49.952195] RIP: 0010:[] [] get_dirty_limits+0xe9/0x2c0
[ 49.952195] RSP: 0018:ffff88001de03a98 EFLAGS: 00010202
[ 49.952195] RAX: 00000000000000c0 RBX: ffff88001de03b80 RCX: 28f5c28f5c28f5c3
[ 49.952195] RDX: 0000000000000000 RSI: 00000000000000c0 RDI: 0000000000000000
[ 49.952195] RBP: ffff88001de03ae8 R08: 0000000000000000 R09: 0000000000000000
[ 49.952195] R10: ffff88001ddda9a0 R11: 0000000000000001 R12: 0000000000000001
[ 49.952195] R13: ffff88001fbc8218 R14: ffff88001de03b70 R15: ffff88001de03b78
[ 49.952195] FS: 00007fe9a435b6f0(0000) GS:ffff8800025d9000(0000) knlGS:0000000000000000
[ 49.952195] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 49.952195] CR2: 00007fe9a39ab000 CR3: 000000001de38000 CR4: 00000000000006e0
[ 49.952195] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 49.952195] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 49.952195] Process dd (pid: 3064, threadinfo ffff88001de02000, task ffff88001ddda250)
[ 49.952195] Stack:
[ 49.952195] ffff88001fa0de00 ffff88001f2dbd70 ffff88001f9fe800 000080b900000000
[ 49.952195] 00000000000000c0 ffff8800027a6100 0000000000000400 ffff88001fbc8218
[ 49.952195] 0000000000000000 0000000000000600 ffff88001de03bb8 ffffffff802d3ed7
[ 49.952195] Call Trace:
[ 49.952195] [] balance_dirty_pages_ratelimited_nr+0x1d7/0x3f0
[ 49.952195] [] ? ext3_writeback_write_end+0x9e/0x120
[ 49.952195] [] generic_file_buffered_write+0x12f/0x330
[ 49.952195] [] __generic_file_aio_write_nolock+0x26d/0x460
[ 49.952195] [] ? generic_file_aio_write+0x52/0xd0
[ 49.952195] [] generic_file_aio_write+0x69/0xd0
[ 49.952195] [] ext3_file_write+0x26/0xc0
[ 49.952195] [] do_sync_write+0xf1/0x140
[ 49.952195] [] ? get_lock_stats+0x2a/0x60
[ 49.952195] [] ? autoremove_wake_function+0x0/0x40
[ 49.952195] [] vfs_write+0xcb/0x190
[ 49.952195] [] sys_write+0x50/0x90
[ 49.952195] [] system_call_fastpath+0x16/0x1b
[ 49.952195] Code: 00 00 00 2b 05 09 1c 17 01 48 89 c6 49 0f af f4 48 c1 ee 02 48 89 f0 48 f7 e1 48 89 d6 31 d2 48 c1 ee 02 48 0f af 75 d0 48 89 f0 f7 f7 41 8b 95 ac 01 00 00 48 89 c7 49 0f af d4 48 c1 ea 02
[ 49.952195] RIP [] get_dirty_limits+0xe9/0x2c0
[ 49.952195] RSP
[ 50.096523] ---[ end trace 008d7aa02f244d7b ]---Signed-off-by: Andrea Righi
Cc: Peter Zijlstra
Cc: David Rientjes
Cc: Dave Chinner
Cc: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
scripts/kernel-doc can (incorrectly) delete struct members that are
surrounded by /* ... */ /* ... */ if there is a /*
private: */ comment in there somewhere also.Fix that by making the "/* private:" only allow whitespace between /* and
"private:", not anything/everything in the world.This fixes some erroneous kernel-doc warnings that popped up while
processing include/linux/usb/composite.h.Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change page_mkwrite to allow implementations to return with the page
locked, and also change it's callers (in page fault paths) to hold the
lock until the page is marked dirty. This allows the filesystem to have
full control of page dirtying events coming from the VM.Rather than simply hold the page locked over the page_mkwrite call, we
call page_mkwrite with the page unlocked and allow callers to return with
it locked, so filesystems can avoid LOR conditions with page lock.The problem with the current scheme is this: a filesystem that wants to
associate some metadata with a page as long as the page is dirty, will
perform this manipulation in its ->page_mkwrite. It currently then must
return with the page unlocked and may not hold any other locks (according
to existing page_mkwrite convention).In this window, the VM could write out the page, clearing page-dirty. The
filesystem has no good way to detect that a dirty pte is about to be
attached, so it will happily write out the page, at which point, the
filesystem may manipulate the metadata to reflect that the page is no
longer dirty.It is not always possible to perform the required metadata manipulation in
->set_page_dirty, because that function cannot block or fail. The
filesystem may need to allocate some data structure, for example.And the VM cannot mark the pte dirty before page_mkwrite, because
page_mkwrite is allowed to fail, so we must not allow any window where the
page could be written to if page_mkwrite does fail.This solution of holding the page locked over the 3 critical operations
(page_mkwrite, setting the pte dirty, and finally setting the page dirty)
closes out races nicely, preventing page cleaning for writeout being
initiated in that window. This provides the filesystem with a strong
synchronisation against the VM here.- Sage needs this race closed for ceph filesystem.
- Trond for NFS (http://bugzilla.kernel.org/show_bug.cgi?id=12913).
- I need it for fsblock.
- I suspect other filesystems may need it too (eg. btrfs).
- I have converted buffer.c to the new locking. Even simple block allocation
under dirty pages might be susceptible to i_size changing under partial page
at the end of file (we also have a buffer.c-side problem here, but it cannot
be fixed properly without this patch).
- Other filesystems (eg. NFS, maybe btrfs) will need to change their
page_mkwrite functions themselves.[ This also moves page_mkwrite another step closer to fault, which should
eventually allow page_mkwrite to be moved into ->fault, and thus avoiding a
filesystem calldown and page lock/unlock cycle in __do_fault. ][akpm@linux-foundation.org: fix derefs of NULL ->mapping]
Cc: Sage Weil
Cc: Trond Myklebust
Signed-off-by: Nick Piggin
Cc: Valdis Kletnieks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 May, 2009
2 commits
-
Missed index.html in "make cleandocs", so add it.
Signed-off-by: Randy Dunlap
Signed-off-by: Sam Ravnborg -
This patchs adds documentation for the multi-touch protocol to
Documentation/input/.[randy.dunlap@oracle.com: grammar fixes]
Signed-off-by: Henrik Rydberg
Signed-off-by: Dmitry Torokhov
30 Apr, 2009
1 commit
-
Conflicts:
Documentation/isdn/00-INDEX
drivers/net/wireless/iwlwifi/iwl-scan.c
drivers/net/wireless/rndis_wlan.c
net/mac80211/main.c
29 Apr, 2009
2 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (24 commits)
e100: do not go D3 in shutdown unless system is powering off
netfilter: revised locking for x_tables
Bluetooth: Fix connection establishment with low security requirement
Bluetooth: Add different pairing timeout for Legacy Pairing
Bluetooth: Ensure that HCI sysfs add/del is preempt safe
net: Avoid extra wakeups of threads blocked in wait_for_packet()
net: Fix typo in net_device_ops description.
ipv4: Limit size of route cache hash table
Add reference to CAPI 2.0 standard
Documentation/isdn/INTERFACE.CAPI
update Documentation/isdn/00-INDEX
ixgbe: Fix WoL functionality for 82599 KX4 devices
veth: prevent oops caused by netdev destructor
xfrm: wrong hash value for temporary SA
forcedeth: tx timeout fix
net: Fix LL_MAX_HEADER for CONFIG_TR_MODULE
mlx4_en: Handle page allocation failure during receive
mlx4_en: Fix cleanup flow on cq activation
vlan: update vlan carrier state for admin up/down
netfilter: xt_recent: fix stack overread in compat code
... -
This patch adds documentation for the bcm5974 to Documentation/input/.
Signed-off-by: Henrik Rydberg
Signed-off-by: Dmitry Torokhov
28 Apr, 2009
2 commits
-
This reverts commit 8032b526d1a3bd91ad633dd3a3b5fdbc47ad54f1.
Hey, it was only meant to be a single release. Now they can all die as
far as I'm concerned.[ Just kidding. They're cute and cuddly.
Except when they have horrible nasty facial diseases. Oh, and I guess
they're not actually that cuddly even when disease-free. ]Signed-off-by: Linus Torvalds
-
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: only save/restore existent registers in the PCIe capability
x86/PCI: don't bother with root quirks if _CRS is used
docbooks: add/fix PCI kernel-doc
PCI: cleanup debug output resources
x86/PCI: set_pci_bus_resources_arch_default cleanups
x86/PCI: Move set_pci_bus_resources_arch_default into arch/x86
x86/PCI: don't call e820_all_mapped with -1 in the mmconfig case
PCI quirk: disable MSI on VIA VT3364 chipsets
27 Apr, 2009
5 commits
-
Move the entry about CAPI 2.0 to the beginning and add a URL.
Incorporate changes suggested by Randy Dunlap, thanks for proofreading.Signed-off-by: Karsten Keil
Signed-off-by: David S. Miller -
isdn: document Kernel CAPI driver interface
Create a file Documentation/isdn/INTERFACE.CAPI describing the
interface between the kernel CAPI subsystem and ISDN device drivers,
analogous to the existing Documentation/isdn/INTERFACE for the old
isdn4linux subsystem. Also add kerneldoc comments to the exported
functions in drivers/isdn/capi/kcapi.c.Impact: Documentation
Signed-off-by: Tilman Schmidt
Signed-off-by: Karsten Keil
Signed-off-by: David S. Miller -
After the merging of mISDN, state which files refer only to the
old isdn4linux subsystem. Also add a few missing files.Signed-off-by: Tilman Schmidt
Signed-off-by: Karsten Keil
Signed-off-by: David S. Miller -
…git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, hpet: Stop soliciting hpet=force users on ICH4M
x86: check boundary in setup_node_bootmem()
uv_time: add parameter to uv_read_rtc()
x86: hpet: fix periodic mode programming on AMD 81xx
x86: more than 8 32-bit CPUs requires X86_BIGSMP
x86: avoid theoretical spurious NMI backtraces with CONFIG_CPUMASK_OFFSTACK=y
x86: fix boot crash in NMI watchdog with CONFIG_CPUMASK_OFFSTACK=y and flat APIC
x86-64: fix FPU corruption with signals and preemption
x86/uv: fix for no memory at paddr 0
docs, x86: add nox2apic back to kernel-parameters.txt
x86: mm/numa_32.c calculate_numa_remap_pages should use __init
x86, kbuild: make "make install" not depend on vmlinux
x86/uv: fix init of cpu-less nodes
x86/uv: fix init of memory-less nodes -
From source code of get_usage_char(), the previous note is not correct,
so fix it.static char get_usage_char(struct lock_class *class, enum lock_usage_bit bit)
{
char c = '.';if (class->usage_mask & lock_flag(bit + 2))/*LOCK_ENABLED_##STATE*/
c = '+';
if (class->usage_mask & lock_flag(bit)) {/*LOCK_USED_IN_##STATE*/
c = '-';
if (class->usage_mask & lock_flag(bit + 2))
c = '?';
}return c;
}note:
1) The 'bit' parameter always is passed as LOCK_USED_IN_##STATE
or LOCK_USED_IN_##STATE_READ , from get_usage_chars().Signed-off-by: Ming Lei
LKML-Reference:
Signed-off-by: Ingo Molnar
25 Apr, 2009
1 commit
-
Adjust the CacheFiles documentation to use the correct names of the credential
pointers in task_struct.The documentation was using names from the old versions of the credentials
patches.Signed-off-by: Marc Dionne
Signed-off-by: David Howells
Signed-off-by: Linus Torvalds
24 Apr, 2009
1 commit
-
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (34 commits)
ACPI, i915: Register ACPI video even when not modesetting
Revert "ACPICA: delete check for AML access to port 0x81-83"
I/O port protection: update for windows compatibility.
sony-laptop: always try to unblock rfkill on load
sony-laptop: fix bogus error message display on resume
ACPI: EC: Fix ACPI EC resume non-query interrupt message
sony-laptop: SNC input event 38 fix
sony-laptop: SNC 127 Initialization Fix
sony-laptop: Duplicate SNC 127 Event Fix
ACPI: prevent processor.max_cstate=0 boot crash
ACPI/hpet: prevent boot hang when hpet=force used on ICH-4M
ACPI: delete obsolete "bus master activity" proc field
ACPI: idle: mark_tsc_unstable() at init-time, not run-time
ACPI: add /sys/firmware/acpi/interrupts/sci_not counter
ACPI video: fix an error when the brightness levels on AC and on Battery are same
acpi-cpufreq: Do not let get_measured perf depend on internal variable
acpi-cpufreq: style-only: add parens to math expression
acpi-cpufreq: Cleanup: Use printk_once
x86, acpi_cpufreq: Fix the NULL pointer dereference in get_measured_perf
thinkpad-acpi: bump up version to 0.23
...