- 28 5月, 2010 3 次提交
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由 KAMEZAWA Hiroyuki 提交于
Considering containers or other resource management softwares in userland, event notification of OOM in memcg should be implemented. Now, memcg has "threshold" notifier which uses eventfd, we can make use of it for oom notification. This patch adds oom notification eventfd callback for memcg. The usage is very similar to threshold notifier, but control file is memory.oom_control and no arguments other than eventfd is required. % cgroup_event_notifier /cgroup/A/memory.oom_control dummy (About cgroup_event_notifier, see Documentation/cgroup/) Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: David Rientjes <rientjes@google.com> Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Trevor Woerner 提交于
Signed-off-by: NTrevor Woerner <twoerner@gmail.com> Cc: Paul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Arce, Abraham 提交于
- Add additional location (Git) for the kernel master tree - Add reference to Git Project Signed-off-by: NAbraham Arce <x0066660@ti.com> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 26 5月, 2010 2 次提交
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由 Phillip Lougher 提交于
Signed-off-by: NPhillip Lougher <phillip@lougher.demon.co.uk>
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由 Kay Sievers 提交于
This adds: alias: devname:<name> to some common kernel modules, which will allow the on-demand loading of the kernel module when the device node is accessed. Ideally all these modules would be compiled-in, but distros seems too much in love with their modularization that we need to cover the common cases with this new facility. It will allow us to remove a bunch of pretty useless init scripts and modprobes from init scripts. The static device node aliases will be carried in the module itself. The program depmod will extract this information to a file in the module directory: $ cat /lib/modules/2.6.34-00650-g537b60d1-dirty/modules.devname # Device nodes to trigger on-demand module loading. microcode cpu/microcode c10:184 fuse fuse c10:229 ppp_generic ppp c108:0 tun net/tun c10:200 dm_mod mapper/control c10:235 Udev will pick up the depmod created file on startup and create all the static device nodes which the kernel modules specify, so that these modules get automatically loaded when the device node is accessed: $ /sbin/udevd --debug ... static_dev_create_from_modules: mknod '/dev/cpu/microcode' c10:184 static_dev_create_from_modules: mknod '/dev/fuse' c10:229 static_dev_create_from_modules: mknod '/dev/ppp' c108:0 static_dev_create_from_modules: mknod '/dev/net/tun' c10:200 static_dev_create_from_modules: mknod '/dev/mapper/control' c10:235 udev_rules_apply_static_dev_perms: chmod '/dev/net/tun' 0666 udev_rules_apply_static_dev_perms: chmod '/dev/fuse' 0666 A few device nodes are switched to statically allocated numbers, to allow the static nodes to work. This might also useful for systems which still run a plain static /dev, which is completely unsafe to use with any dynamic minor numbers. Note: The devname aliases must be limited to the *common* and *single*instance* device nodes, like the misc devices, and never be used for conceptually limited systems like the loop devices, which should rather get fixed properly and get a control node for losetup to talk to, instead of creating a random number of device nodes in advance, regardless if they are ever used. This facility is to hide the mess distros are creating with too modualized kernels, and just to hide that these modules are not compiled-in, and not to paper-over broken concepts. Thanks! :) Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: David S. Miller <davem@davemloft.net> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Chris Mason <chris.mason@oracle.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk> Cc: Ian Kent <raven@themaw.net> Signed-Off-By: NKay Sievers <kay.sievers@vrfy.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 25 5月, 2010 7 次提交
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由 Mel Gorman 提交于
mm: compaction: add a tunable that decides when memory should be compacted and when it should be reclaimed The kernel applies some heuristics when deciding if memory should be compacted or reclaimed to satisfy a high-order allocation. One of these is based on the fragmentation. If the index is below 500, memory will not be compacted. This choice is arbitrary and not based on data. To help optimise the system and set a sensible default for this value, this patch adds a sysctl extfrag_threshold. The kernel will only compact memory if the fragmentation index is above the extfrag_threshold. [randy.dunlap@oracle.com: Fix build errors when proc fs is not configured] Signed-off-by: NMel Gorman <mel@csn.ul.ie> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Rik van Riel <riel@redhat.com> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mel Gorman 提交于
Add a per-node sysfs file called compact. When the file is written to, each zone in that node is compacted. The intention that this would be used by something like a job scheduler in a batch system before a job starts so that the job can allocate the maximum number of hugepages without significant start-up cost. Signed-off-by: NMel Gorman <mel@csn.ul.ie> Acked-by: NRik van Riel <riel@redhat.com> Reviewed-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: NChristoph Lameter <cl@linux-foundation.org> Reviewed-by: NMinchan Kim <minchan.kim@gmail.com> Reviewed-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mel Gorman 提交于
Add a proc file /proc/sys/vm/compact_memory. When an arbitrary value is written to the file, all zones are compacted. The expected user of such a trigger is a job scheduler that prepares the system before the target application runs. Signed-off-by: NMel Gorman <mel@csn.ul.ie> Acked-by: NRik van Riel <riel@redhat.com> Reviewed-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: NMinchan Kim <minchan.kim@gmail.com> Reviewed-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: NChristoph Lameter <cl@linux-foundation.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Lee Schermerhorn 提交于
Update Documentation/filesystems/tmpfs.txt to describe the interaction of tmpfs mount option memory policy with tasks' cpuset mems_allowed. Note: the mount(8) man page [in the util-linux-ng package] requires similiar updates. Signed-off-by: NLee Schermerhorn <lee.schermerhorn@hp.com> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Ravikiran Thirumalai <kiran@scalex86.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Move the limited watchdog driver help from kernel-parameters.txt to Documentation/watchdog/watchdog-parameters.txt and add info to it for all watchdog drivers except the ones that have driver-specific files already. Correct minor comments and MODULE_PARM_DESC() text in 2 places. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Mika Westerberg 提交于
This patch adds an SPI master driver for the Cirrus EP93xx SPI controller found in EP93xx chips. Signed-off-by: NMika Westerberg <mika.westerberg@iki.fi> Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: NH Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Prarit Bhargava 提交于
Fix this warning: Documentation/spi/spidev_fdx.c: In function `do_msg': Documentation/spi/spidev_fdx.c:61: warning: cast from pointer to integer of different size Documentation/spi/spidev_fdx.c:64: warning: cast from pointer to integer of different size buf should be unsigned long to match native arch on 32-bit x86 compile. Signed-off-by: NPrarit Bhargava <prarit@redhat.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 24 5月, 2010 7 次提交
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由 Dave Chinner 提交于
Document the design of the delayed logging implementation. This includes assumptions made, dead ends followed, the reasoning behind the structuring of the code, the layout of various structures, how things fit together, traps and pit-falls avoided, etc. This is all too much to document in the code itself, so do it in a separate file. Signed-off-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NAlex Elder <aelder@sgi.com>
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由 Randy Dunlap 提交于
Add build testing using 'O=builddir'. Add build testing with various kconfig symbols disabled, listing common ones that are known to cause build problems. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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documentation: slightly more correct value for MAP_HUGETLB in map_hugetlb.c still not correct for alpha, mips, parisc or xtensa but working out of the box in the most common architectures without having to deal with complicated macros or including architecture specific headers. Signed-off-by: NCarlo Marcelo Arenas Belon <carenas@sajinet.com.pe> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrea Gelmini 提交于
Documentation/timers/hpet_example.c: fcntl.h is included more than once. Documentation/timers/hpet_example.c: signal.h is included more than once. Signed-off-by: NAndrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Update explanation of mmotm. Add explanation of drivers/staging/. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Acked-by: NJonathan Corbet <corbet@lwn.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Add info on maintainers and persistent posting. Update git home page. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Acked-by: NJonathan Corbet <corbet@lwn.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 H Hartley Sweeten 提交于
In the example the module_init function should be static. Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 5月, 2010 3 次提交
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由 Eric Sandeen 提交于
ext4 was updated to accept barrier/nobarrier mount options in addition to the older barrier=0/1. The barrier story is complex enough, we should help people by making the options the same at least, even if the defaults are different. This patch allows the barrier/nobarrier mount options for ext3, while keeping nobarrier the default. It also unconditionally displays barrier status in show_options, and prints a message at mount time if barriers are not enabled, just as ext4 does. Signed-off-by: NEric Sandeen <sandeen@redhat.com> Signed-off-by: NJan Kara <jack@suse.cz>
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由 Jean Delvare 提交于
Let the user disable selected features normally supported by the device. This makes it possible to work around possible driver or hardware bugs if the feature in question doesn't work as intended for whatever reason. Signed-off-by: NJean Delvare <khali@linux-fr.org> Cc: Felix Rubinstein <felixru@gmail.com>
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由 Serge E. Hallyn 提交于
The first three paragraphs are almost verbatim taken from Eric's commit message on the patch introducing network ns tags. The next two paragraphs I wrote to be a brief high level overview. The last section is taken from the commit message on "Implement sysfs tagged directory support", but updated. Hopefully correctly. Signed-off-by: NSerge E. Hallyn <serue@us.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 21 5月, 2010 12 次提交
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由 Jason Wessel 提交于
This patch adds the capability to use the usb debug port with the kernel debugger. It is also still possible to use this functionality with or without the earlyprintk=dbgpX. It is possible to use the kgdbwait boot argument to debug very early in the kernel start up code. There are two ways to use this driver extension with a kernel boot argument. 1) kgdbdbgp=# -- Where # is the number of the usb debug controller You must use sysrq-g to break into the kernel debugger on another connection type other than the dbgp. 2) kgdbdbgp=#debugControlNum#,#Seconds# In this mode, the usb debug port is polled every #Seconds# for character input. It is possible to use gdb or press control-c to break into the kernel debugger. From the implementation perspective there are 3 high level changes. 1) Allow variable retries for the the hardware via dbgp_bulk_read(). The amount of retries for the dbgp_bulk_read() needed to be variable instead of fixed. We do not want to poll at all when the kernel is operating in interrupt driven mode. The polling only occurs if the kernel was booted when specifying some number of seconds via the kgdbdbgp boot argument (IE kgdbdbgp=0,1). In this case the loop count is reduced to 1 so as introduce the smallest amount of latency as possible. 2) Save the bulk IN endpoint address for use by the kgdb code. 3) The addition of the kgdb interface code. This consisted of adding in a character read function for the dbgp as well as a polling thread to allow the dbgp to interrupt the kernel execution. The rest is the typical kgdb I/O api. CC: Eric Biederman <ebiederm@xmission.com> CC: Yinghai Lu <yhlu.kernel@gmail.com> CC: linux-usb@vger.kernel.org Signed-off-by: NJason Wessel <jason.wessel@windriver.com> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Jason Wessel 提交于
The ekgdboc= differs from kgdboc= in that you can begin debuggin as soon as the exceptions are setup and the kgdb I/O driver is available, instead of waiting until the tty subsystem is available. CC: kgdb-bugreport@lists.sourceforge.net Signed-off-by: NJason Wessel <jason.wessel@windriver.com>
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由 Jason Wessel 提交于
Update the kgdb docs to reflect the new directory structure and API. Merge in the kdb shell information. [Randy Dunlap <rdunlap@xenotime.net>: grammatical corrections] CC: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: NJason Wessel <jason.wessel@windriver.com>
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由 Jason Wessel 提交于
This patch adds in the kdb PS/2 keyboard driver. This was mostly a direct port from the original kdb where I cleaned up the code against checkpatch.pl and added the glue to stitch it into kgdb. This patch also enables early kdb debug via kgdbwait and the keyboard. All the access to configure kdb using either a serial console or the keyboard is done via kgdboc. If you want to use only the keyboard and want to break in early you would add to your kernel command arguments: kgdboc=kbd kgdbwait If you wanted serial and or the keyboard access you could use: kgdboc=kbd,ttyS0 You can also configure kgdboc as a kernel module or at run time with the sysfs where you can activate and deactivate kgdb. Turn it on: echo kbd,ttyS0 > /sys/module/kgdboc/parameters/kgdboc Turn it off: echo "" > /sys/module/kgdboc/parameters/kgdboc Signed-off-by: NJason Wessel <jason.wessel@windriver.com> Reviewed-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
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由 Alan Stern 提交于
Now that URB_NO_SETUP_DMA_MAP is no longer in use, this patch (as1376) removes all references to it. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Fabien Chouteau 提交于
This patch adds a sysfs entry (/sys/devices/platform/_UDC_/gadget/suspended) to show the suspend state of an USB composite gadget. Signed-off-by: NFabien Chouteau <fabien.chouteau@barco.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Mike Dunn 提交于
Add support for the parallel port on the moschip MCS7715 device. The port registers itself with the parport subsystem as a low-level driver. A separate entry to the kernel configuration is added beneath that for the mos7720, to avoid the need to link with the parport subsystem code for users who don't have or don't want the parallel port. Only compatibility mode is currently supported (no ECP/EPP). Tested with both moschip devices (7720 and 7715) on UP and SMP hosts, including regression testing of serial port, concurrent operation of serial and parallel ports, and various connect / disconnect scenarios. Signed-off-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Daniel Mack 提交于
For more clearance what the functions actually do, usb_buffer_alloc() is renamed to usb_alloc_coherent() usb_buffer_free() is renamed to usb_free_coherent() They should only be used in code which really needs DMA coherency. All call sites have been changed accordingly, except for staging drivers. Signed-off-by: NDaniel Mack <daniel@caiaq.de> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Pedro Ribeiro <pedrib@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Eric Raymond 提交于
Documentation update Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sarah Sharp 提交于
Bulk endpoint streams were added in the USB 3.0 specification. Streams allow a device driver to overload a bulk endpoint so that multiple transfers can be queued at once. The device then decides which transfer it wants to work on first, and can queue part of a transfer before it switches to a new stream. All this switching is invisible to the device driver, which just gets a completion for the URB. Drivers that use streams must be able to handle URBs completing in a different order than they were submitted to the endpoint. This requires adding new API to set up xHCI data structures to support multiple queues ("stream rings") per endpoint. Drivers will allocate a number of stream IDs before enqueueing URBs to the bulk endpoints of the device, and free the stream IDs in their disconnect function. See Documentation/usb/bulk-streams.txt for details. The new mass storage device class, USB Attached SCSI Protocol (UASP), uses these streams API. Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1367) deprecates USB's power/level sysfs attribute in favor of the power/control attribute provided by the runtime PM core. The two attributes do the same thing. It would be nice to replace power/level with a symlink to power/control, but at the moment sysfs doesn't offer any way to do so. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Fabien Chouteau 提交于
g_hid is a USB gadget driver implementing the Human Interface Device class specification. The driver handles basic HID protocol handling in the kernel, and allows userspace to read/write HID reports trough /dev/hidgX character devices. Signed-off-by: NFabien Chouteau <fabien.chouteau@barco.com> Signed-off-by: NPeter Korsgaard <peter.korsgaard@barco.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 20 5月, 2010 1 次提交
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由 Paul Fox 提交于
While setting up sysrq operation on the XO laptop (which lacks a SysRq key), i realized that the documentation was quite out of date. Change documentation of SysRq to reflect current KEY_SYSRQ value. Signed-off-by: NPaul Fox <pgf@laptop.org> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
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- 19 5月, 2010 5 次提交
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由 Hans Verkuil 提交于
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Dmitri Belimov 提交于
[dougsland@redhat.com: Fixed cards numbers reject due changes in saa7134.h] Signed-off-by: NBeholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com> Signed-off-by: NDouglas Schilling Landgraf <dougsland@redhat.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Pawel Osciak 提交于
Add documentation for V4L2_BUF_FLAG_ERROR. Signed-off-by: NPawel Osciak <p.osciak@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Kirill Smelkov 提交于
I have 3 IVC-200 cards (with 4 video channels on each). 2 of the cards identify theirselves as 000[0-3]:a155 (ids already in cardlist) and another one identifies itself as 080[0-3]:a155, which ids were unknown so far. Note - it's IVC-200, not IVC-200G. Signed-off-by: NKirill Smelkov <kirr@mns.spb.ru> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Hans Verkuil 提交于
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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