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2007-07-19update checkpatch.pl to version 0.08Andy Whitcroft
This version brings a number of new checks, and a number of bug fixes. Of note: - warnings for multiple assignments per line - warnings for multiple declarations per line - checks for single statement blocks with braces This patch includes an update for feature-removal-schedule.txt to better target checks. Andy Whitcroft (12): Version: 0.08 only apply printk checks where there is a string literal allow suppression of errors for when no patch is found warn about multiple assignments warn on declaration of multiple variables check for kfree() with needless null check check for single statement braced blocks check for aggregate initialisation on the next line handle the => operator check for spaces between function name and open parenthesis move to explicit Check: entries in feature-removal-schedule.txt handle pointer attributes Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19Typo: fro -> fromRolf Eike Beer
Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19coredump masking: documentation for /proc/pid/coredump_filterKawai, Hidehiro
This patch adds the documentation for /proc/<pid>/coredump_filter. Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19docbook: don't reference file without kernel-docRandy Dunlap
Remove include/linux/rmap.h from kernel-api.tmpl since it no longer contains kernel-doc. Fixes this warning: Warning(linux-2.6.22//include/linux/rmap.h): no structured comments found Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19kernel-doc: add tools doc in MakefileRandy Dunlap
Add kernel-doc tools info in Makefile. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19audit: rework execve auditPeter Zijlstra
The purpose of audit_bprm() is to log the argv array to a userspace daemon at the end of the execve system call. Since user-space hasn't had time to run, this array is still in pristine state on the process' stack; so no need to copy it, we can just grab it from there. In order to minimize the damage to audit_log_*() copy each string into a temporary kernel buffer first. Currently the audit code requires that the full argument vector fits in a single packet. So currently it does clip the argv size to a (sysctl) limit, but only when execve auditing is enabled. If the audit protocol gets extended to allow for multiple packets this check can be removed. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ollie Wild <aaw@google.com> Cc: <linux-audit@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19jprobes: remove JPROBE_ENTRY()Michael Ellerman
AFAICT now that jprobe.entry is a void *, JPROBE_ENTRY doesn't do anything useful - so remove it .. I've left a do-nothing version so that out-of-tree jprobes code will still compile without modifications. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19gpio calls don't need i/o barriersDavid Brownell
Clarify that drivers using the GPIO operations don't need to issue io barrier instructions themselves. Previously this wasn't clear, and at least one platform assumed otherwise (and would thus break various otherwise-portable drivers which don't issue barriers). 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>
2007-07-19PM: introduce hibernation and suspend notifiersRafael J. Wysocki
Make it possible to register hibernation and suspend notifiers, so that subsystems can perform hibernation-related or suspend-related operations that should not be carried out by device drivers' .suspend() and .resume() routines. [akpm@linux-foundation.org: build fixes] [akpm@linux-foundation.org: cleanups] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@nigel.suspend2.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19mm: fault feedback #1Nick Piggin
Change ->fault prototype. We now return an int, which contains VM_FAULT_xxx code in the low byte, and FAULT_RET_xxx code in the next byte. FAULT_RET_ code tells the VM whether a page was found, whether it has been locked, and potentially other things. This is not quite the way he wanted it yet, but that's changed in the next patch (which requires changes to arch code). This means we no longer set VM_CAN_INVALIDATE in the vma in order to say that a page is locked which requires filemap_nopage to go away (because we can no longer remain backward compatible without that flag), but we were going to do that anyway. struct fault_data is renamed to struct vm_fault as Linus asked. address is now a void __user * that we should firmly encourage drivers not to use without really good reason. The page is now returned via a page pointer in the vm_fault struct. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19Document ->page_mkwrite() lockingMark Fasheh
There seems to be very little documentation about this callback in general. The locking in particular is a bit tricky, so it's worth having this in writing. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19mm: merge populate and nopage into fault (fixes nonlinear)Nick Piggin
Nonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes the virtual address -> file offset differently from linear mappings. ->populate is a layering violation because the filesystem/pagecache code should need to know anything about the virtual memory mapping. The hitch here is that the ->nopage handler didn't pass down enough information (ie. pgoff). But it is more logical to pass pgoff rather than have the ->nopage function calculate it itself anyway (because that's a similar layering violation). Having the populate handler install the pte itself is likewise a nasty thing to be doing. This patch introduces a new fault handler that replaces ->nopage and ->populate and (later) ->nopfn. Most of the old mechanism is still in place so there is a lot of duplication and nice cleanups that can be removed if everyone switches over. The rationale for doing this in the first place is that nonlinear mappings are subject to the pagefault vs invalidate/truncate race too, and it seemed stupid to duplicate the synchronisation logic rather than just consolidate the two. After this patch, MAP_NONBLOCK no longer sets up ptes for pages present in pagecache. Seems like a fringe functionality anyway. NOPAGE_REFAULT is removed. This should be implemented with ->fault, and no users have hit mainline yet. [akpm@linux-foundation.org: cleanup] [randy.dunlap@oracle.com: doc. fixes for readahead] [akpm@linux-foundation.org: build fix] Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-18Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: eHEA: Fix bonding support Blackfin ethernet driver: on chip ethernet MAC controller driver fix wrong argument of tc35815_read_plat_dev_addr() ARM/ETHER3: Handle multicast frames. SAA9730: Handle multicast frames. NI5010: Handle multicast frames. NS83820: Handle multicast frames. Fix RGMII-ID handling in gianfar Fix Vitesse RGMII-ID support Add phy-connection-type to gianfar nodes Fix Vitesse 824x PHY interrupt acking [PATCH] zd1211rw: Add ID for Siemens Gigaset USB Stick 54 [PATCH] zd1211rw: Add ID for Planex GW-US54GXS [PATCH] Update version ipw2200 stamp to 1.2.2 [PATCH] ipw2200: Fix ipw_isr() comments error on shared IRQ [PATCH] Fix ipw2200 set wrong power parameter causing firmware error [PATCH] ipw2100: Fix `iwpriv set_power` error [PATCH] softmac: Channel is listed twice in scan output
2007-07-18Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/docs-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/docs-2.6: zh_CN/HOWTO: update URLs of git trees Chinese translation of Documentation/stable_api_nonsense.txt HOWTO: add Chinese translation of Documentation/HOWTO Documentation: add Japanese translated stable_api_nonsense.txt HOWTO: add Japanese translation of Documentation/HOWTO
2007-07-18Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: sysfs: cosmetic clean up on node creation failure paths sysfs: kill an extra put in sysfs_create_link() failure path Driver core: check return code of sysfs_create_link() HOWTO: Add the knwon_regression URI to the documentation dev_vdbg() documentation dev_vdbg(), available with -DVERBOSE_DEBUG sysfs: make sysfs_init_inode() static sysfs: fix sysfs root inode nlink accounting Documentation fix devres.txt: lib/iomap.c -> lib/devres.c sysfs: avoid kmem_cache_free(NULL) PM: remove deprecated dpm_runtime_* routines PM: Remove deprecated sysfs files Driver core: accept all valid action-strings in uevent-trigger debugfs: remove rmdir() non-empty complaint
2007-07-18Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/uio-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/uio-2.6: UIO: Hilscher CIF card driver UIO: Documentation UIO: Add the User IO core code
2007-07-18Merge branch 'for-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: (29 commits) IB/mthca: Simplify use of size0 in work request posting IB/mthca: Factor out setting WQE UD segment entries IB/mthca: Factor out setting WQE remote address and atomic segment entries IB/mlx4: Factor out setting other WQE segments IB/mlx4: Factor out setting WQE data segment entries IB/mthca: Factor out setting WQE data segment entries IB/mlx4: Return receive queue sizes for userspace QPs from query QP IB/mlx4: Increase max outstanding RDMA reads as target RDMA/cma: Remove local write permission from QP access flags IB/mthca: Use uninitialized_var() for f0 IB/cm: Make internal function cm_get_ack_delay() static IB/ipath: Remove ipath_get_user_pages_nocopy() IB/ipath: Make a few functions static mlx4_core: Reset device when internal error is detected IB/iser: Make a couple of functions static IB/mthca: Fix printk format used for firmware version in warning IB/mthca: Schedule MSI support for removal IB/ehca: Fix warnings issued by checkpatch.pl IB/ehca: Restructure ehca_set_pagebuf() IB/ehca: MR/MW structure refactoring ...
2007-07-18zh_CN/HOWTO: update URLs of git treesLi Yang
Addressing patch from Stefan Richter: HOWTO: update URLs of git trees (It will be better if we update this to commit-id later) Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18Chinese translation of Documentation/stable_api_nonsense.txtTripleX
This is a Chinese translated version of Documentation/stable_api_nonsense.txt. From: TripleX <zhongyu@18mail.cn> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18HOWTO: add Chinese translation of Documentation/HOWTOLi Yang
This is a Chinese translated version of Documentation/HOWTO. Currently Chinese involvement in Linux kernel is very low, especially comparing to its largest population base. Language could be the main obstacle. Hope this document will help more Chinese to contribute to Linux kernel. Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: TripleX Chung <xxx.phy@gmail.com> Signed-off-by: Maggie Chen <chenqi@beyondsoft.com> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18Documentation: add Japanese translated stable_api_nonsense.txtIKEDA, Munehiro
Signed-off-by: IKEDA, Munehiro <m-ikeda@ds.jp.nec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18HOWTO: add Japanese translation of Documentation/HOWTOTsugikazu Shibata
Add the japanese translation of the Documentation/HOWTO file. Signed-off-by: Tsugikazu Shibata <tshibata@ab.jp.nec.com> Cc: IKEDA Munehiro <m-ikeda@ds.jp.nec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18UIO: DocumentationHans J. Koch
Documentation for the UIO interface From: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18HOWTO: Add the knwon_regression URI to the documentationPaolo Ciarrocchi
We should let everybody know about where the regression list is hosted. The more is known the more it is used. Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Cc: Li Yang <leoli@freescale.com> Cc: TripleX Chung <xxx.phy@gmail.com> Cc: Maggie Chen <chenqi@beyondsoft.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Cc: Tsugikazu Shibata <tshibata@ab.jp.nec.com> Cc: IKEDA Munehiro <m-ikeda@ds.jp.nec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18dev_vdbg() documentationDavid Brownell
Update CodingStyle to talk about "-DDEBUG" message conventions and the new "-DVERBOSE_DEBUG" convention. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18Documentation fix devres.txt: lib/iomap.c -> lib/devres.cBrandon Philips
Signed-off-by: Brandon Philips <bphilips@suse.de> Acked-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18PM: remove deprecated dpm_runtime_* routinesAlan Stern
This patch (as933) removes the deprecated dpm_runtime_suspend() and dpm_runtime_resume() routines from the PM core. The only user of those routines is the PCMCIA ds driver; local replacements are added. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18PM: Remove deprecated sysfs filesAlan Stern
This patch (as932) removes the deprecated sysfs .../power/state attribute files. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-18Add phy-connection-type to gianfar nodesAndy Fleming
The TSEC/eTSEC automatically detect their PHY interface type, unless the type is RGMII-ID (RGMII with internal delay). In that situation, it just detects RGMII. In order to fix this, we need to pass in rgmii-id if that is the connection type. Signed-off-by: Andy Fleming <afleming@freescale.com>
2007-07-18V4L/DVB (5829): Firmware extract and loading for opera dvb-usb updateMarco Gittler
Better way of creating and loading the firmware used. Update for get_dvb_firmware script to extract the files for opera usb-box Help file for creating the firmware added Signed-off-by: Marco Gittler <g.marco@freenet.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5803): Bttv: add support for DViCO FusionHDTV 2Michael Krufky
add analog video support for DViCO FusionHDTV 2 Thanks to Todd Ignasiak for donating the card. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5800): Tuner: correct description of Philips FCV1236D tunerMichael Krufky
The old description was "Philips 1236D ATSC/NTSC dual in", which can be confused with other Philips tuner models. This patch corrects the name to "Philips FCV1236D ATSC/NTSC dual in", and updates the range and params array names to match the description. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5792): Zr364xx: add support for Trust Powerc@m 970ZAntoine Jacquet
Add Trust Powerc@m 970Z (0x06d6:0x003b) to the list of supported devices. Signed-off-by: Antoine Jacquet <royale@zerezo.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5789): Fix 3dfx Voodoo entries on CardlistMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5771): Get_dvb_firmware: update script for new locationMichael Krufky
Get_dvb_firmware: update script for new location of sp8870 firmware This url is no longer valid: http://www.technotrend.de/new/217g/tt_Premium_217g.zip Replace with: http://www.softwarepatch.pl/9999ccd06a4813cb827dbb0005071c71/tt_Premium_217g.zip Thanks-to: Tobias Stoeber <tobi@to-st.de> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5765): SN9C1xx driver updatesLuca Risolia
- Add support for pair OV7630+SN9C120 - Better and safe locking mechanism of the device structure on open(), close() and disconnect() - Use kref for handling device deallocation - Generic cleanups Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5701): Documentation/dvb/bt8xx.txt updateUwe Bugla
This patch synchronizes the Documentation for bt8xx-based cards to the actual state of kernel 2.6.22-rc1. Signed-off-by: Uwe Bugla <uwe.bugla@gmx.de> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5685): Cx88: add support for ADS Tech Instant Video PCIDaniel Gimpelevich
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5646): V4l: saa7134: add support for 10moons TM300 cardTony Wan
Support the 10moons TM300 TV card (so called TV Master 3), which is a 10moons saa7130 based board. Here not include features for the IR-remote. It has been tested using TVTIME. The card was auto-detected and all the input sources worked correct with sound. Signed-off-by: Tony Wan <wankai@sjtu.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18V4L/DVB (5563a): Add experimental support for tea5761 tunerMauro Carvalho Chehab
This driver were made based on tea5761 specs. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-17IB/mthca: Schedule MSI support for removalRoland Dreier
The mthca driver supports both MSI and MSI-X. However, MSI-X works with all hardware that the driver handles, and provides a superset of what MSI does, so there's no point in having code for both. Schedule MSI support for removal in 2008 to give anyone who actually needs MSI and who can't use MSI time to speak up. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-17rtc: make example code jump to done instead of return when ioctl not supportedHans-Christian Egtvedt
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17eCryptfs: Move ecryptfs docs into Documentation/filesystems/Josef 'Jeff' Sipek
Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu> Acked-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17spi_lm70llp parport adapter driverKaiwan N Billimoria
This adds a driver for the LM70-LLP parport adapter, which is an eval board for the LM70 temperature sensor. For those without that board, it may be a simpler example of a parport-to-SPI adapter then spi_butterfly. Signed-off-by: Kaiwan N Billimoria <kaiwan@designergraphix.com> Doc, coding style, and interface updates; build fixes. Minor rename. 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>
2007-07-17CRC7 supportJan Nikitenko
Add CRC7 routines, used for example in MMC over SPI communication. Kerneldoc updates [akpm@linux-foundation.org: fix funny mix of const and non-const] Signed-off-by: Jan Nikitenko <jan.nikitenko@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Report that kernel is tainted if there was an OOPSPavel Emelianov
If the kernel OOPSed or BUGed then it probably should be considered as tainted. Thus, all subsequent OOPSes and SysRq dumps will report the tainted kernel. This saves a lot of time explaining oddities in the calltraces. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Added parisc patch from Matthew Wilson -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Freezer: make kernel threads nonfreezable by defaultRafael J. Wysocki
Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17SLUB: change error reporting format to follow lockdep looselyChristoph Lameter
Changes the error reporting format to loosely follow lockdep. If data corruption is detected then we generate the following lines: ============================================ BUG <slab-cache>: <problem> -------------------------------------------- INFO: <more information> [possibly multiple times] <object dump> FIX <slab-cache>: <remedial action> This also adds some more intelligence to the data corruption detection. Its now capable of figuring out the start and end. Add a comment on how to configure SLUB so that a production system may continue to operate even though occasional slab corruption occur through a misbehaving kernel component. See "Emergency operations" in Documentation/vm/slub.txt. [akpm@linux-foundation.org: build fix] Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Add a movablecore= parameter for sizing ZONE_MOVABLEMel Gorman
This patch adds a new parameter for sizing ZONE_MOVABLE called movablecore=. While kernelcore= is used to specify the minimum amount of memory that must be available for all allocation types, movablecore= is used to specify the minimum amount of memory that is used for migratable allocations. The amount of memory used for migratable allocations determines how large the huge page pool could be dynamically resized to at runtime for example. How movablecore is actually handled is that the total number of pages in the system is calculated and a value is set for kernelcore that is kernelcore == totalpages - movablecore Both kernelcore= and movablecore= can be safely specified at the same time. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17handle kernelcore=: genericMel Gorman
This patch adds the kernelcore= parameter for x86. Once all patches are applied, a new command-line parameter exist and a new sysctl. This patch adds the necessary documentation. From: Yasunori Goto <y-goto@jp.fujitsu.com> When "kernelcore" boot option is specified, kernel can't boot up on ia64 because of an infinite loop. In addition, the parsing code can be handled in an architecture-independent manner. This patch uses common code to handle the kernelcore= parameter. It is only available to architectures that support arch-independent zone-sizing (i.e. define CONFIG_ARCH_POPULATES_NODE_MAP). Other architectures will ignore the boot parameter. [bunk@stusta.de: make cmdline_parse_kernelcore() static] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Acked-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>