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2008-11-26ftrace: add function tracing to single threadSteven Rostedt
Impact: feature to function trace a single thread This patch adds the ability to function trace a single thread. The file: /debugfs/tracing/set_ftrace_pid contains the pid to trace. Valid pids are any positive integer. Writing any negative number to this file will disable the pid tracing and the function tracer will go back to tracing all of threads. This feature works with both static and dynamic function tracing. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-24Merge branches 'tracing/branch-tracer', 'tracing/fastboot', ↵Ingo Molnar
'tracing/ftrace', 'tracing/function-return-tracer', 'tracing/power-tracer', 'tracing/powerpc', 'tracing/ring-buffer', 'tracing/stack-tracer' and 'tracing/urgent' into tracing/core
2008-11-23tracing, doc: update mmiotrace documentationPekka Paalanen
Impact: update documentation Update to reflect the current state of the tracing framework: - "none" tracer has been replaced by "nop" tracer - tracing_enabled must be toggled when changing buffer size Signed-off-by: Pekka Paalanen <pq@iki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-23tracing: identify which executable object the userspace address belongs toTörök Edwin
Impact: modify+improve the userstacktrace tracing visualization feature Store thread group leader id, and use it to lookup the address in the process's map. We could have looked up the address on thread's map, but the thread might not exist by the time we are called. The process might not exist either, but if you are reading trace_pipe, that is unlikely. Example usage: mount -t debugfs nodev /sys/kernel/debug cd /sys/kernel/debug/tracing echo userstacktrace >iter_ctrl echo sym-userobj >iter_ctrl echo sched_switch >current_tracer echo 1 >tracing_enabled cat trace_pipe >/tmp/trace& .... run application ... echo 0 >tracing_enabled cat /tmp/trace You'll see stack entries like: /lib/libpthread-2.7.so[+0xd370] You can convert them to function/line using: addr2line -fie /lib/libpthread-2.7.so 0xd370 Or: addr2line -fie /usr/lib/debug/libpthread-2.7.so 0xd370 For non-PIC/PIE executables this won't work: a.out[+0x73b] You need to run the following: addr2line -fie a.out 0x40073b (where 0x400000 is the default load address of a.out) Signed-off-by: Török Edwin <edwintorok@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-23tracing: add support for userspace stacktraces in tracing/iter_ctrlTörök Edwin
Impact: add new (default-off) tracing visualization feature Usage example: mount -t debugfs nodev /sys/kernel/debug cd /sys/kernel/debug/tracing echo userstacktrace >iter_ctrl echo sched_switch >current_tracer echo 1 >tracing_enabled .... run application ... echo 0 >tracing_enabled Then read one of 'trace','latency_trace','trace_pipe'. To get the best output you can compile your userspace programs with frame pointers (at least glibc + the app you are tracing). Signed-off-by: Török Edwin <edwintorok@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-23Merge branches 'tracing/profiling', 'tracing/options' and 'tracing/urgent' ↵Ingo Molnar
into tracing/core
2008-11-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (23 commits) net: fix tiny output corruption of /proc/net/snmp6 atl2: don't request irq on resume if netif running ipv6: use seq_release_private for ip6mr.c /proc entries pkt_sched: fix missing check for packet overrun in qdisc_dump_stab() smc911x: Fix printf format typo in smc911x driver. asix: Fix asix-based cards connecting to 10/100Mbs LAN. mv643xx_eth: fix recycle check bound mv643xx_eth: fix the order of mdiobus_{unregister, free}() calls sh: sh_eth: Update to change of mii_bus TPROXY: supply a struct flowi->flags argument in inet_sk_rebuild_header() TPROXY: fill struct flowi->flags in udp_sendmsg() net: ipg.c fix bracing on endian swapping phylib: Fix auto-negotiation restart avoidance net: jme.c rxdesc.flags is __le16, other missing endian swaps phylib: fix phy name example in documentation net: Do not fire linkwatch events until the device is registered. phonet: fix compilation with gcc-3.4 ixgbe: fix compilation with gcc-3.4 pktgen: fix multiple queue warning net: fix ip_mr_init() error path ...
2008-11-20Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/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: more general identifier for Phoenix BIOS AMD IOMMU: check for next_bit also in unmapped area AMD IOMMU: fix fullflush comparison length AMD IOMMU: enable device isolation per default AMD IOMMU: add parameter to disable device isolation x86, PEBS/DS: fix code flow in ds_request() x86: add rdtsc barrier to TSC sync check xen: fix scrub_page() x86: fix es7000 compiling x86, bts: fix unlock problem in ds.c x86, voyager: fix smp generic helper voyager breakage x86: move iomap.h to the new include location
2008-11-20Documentation/kernel-parameters.txt: add min_addr, fix max_addrRandy Dunlap
Add "min_addr" documentation. For "max_addr", add nn before [KMG] since a number is needed and this is consistent with other uses of [KMG]. 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>
2008-11-19phylib: fix phy name example in documentationPaulius Zaleckas
All MDIO bus drivers currently name bus with "%x" format. There is one exception where mv643xx_eth driver is using "%d". Phy address on the bus uses format "%02x". Fixing phy name example to match all real life MDIO drivers. Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19Merge branches 'tracing/ftrace' and 'tracing/urgent' into tracing/coreIngo Molnar
Conflicts: kernel/trace/ftrace.c [ We conflicted here because we backported a few fixes to tracing/urgent - which has different internal APIs. ]
2008-11-18AMD IOMMU: enable device isolation per defaultJoerg Roedel
Impact: makes device isolation the default for AMD IOMMU Some device drivers showed double-free bugs of DMA memory while testing them with AMD IOMMU. If all devices share the same protection domain this can lead to data corruption and data loss. Prevent this by putting each device into its own protection domain per default. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18AMD IOMMU: add parameter to disable device isolationJoerg Roedel
Impact: add a new AMD IOMMU kernel command line parameter Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-16tracepoints: format documentationIngo Molnar
Impact: documentation update Properly format Documentation/tracepoints.txt - it was full of overlong lines and other typographical problems. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16tracepoints, docs: ↵Mathieu Desnoyers
marker_synchronize_unregister->tracepoint_synchronize_unregister Impact: documentation update. Signed-off-by: Zhaolei <zhaolei@cn.fujitsu.com> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16tracepoints: documentation fix for teardownMathieu Desnoyers
Impact: documentation update Need a tracepoint_synchronize_unregister() before the end of exit() to make sure every probe callers have exited the non preemptible section and thus are not executing the probe code anymore. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()Mathieu Desnoyers
Impact: API *CHANGE*. Must update all tracepoint users. Add DEFINE_TRACE() to tracepoints to let them declare the tracepoint structure in a single spot for all the kernel. It helps reducing memory consumption, especially when declaring a lot of tracepoints, e.g. for kmalloc tracing. *API CHANGE WARNING*: now, DECLARE_TRACE() must be used in headers for tracepoint declarations rather than DEFINE_TRACE(). This is the sane way to do it. The name previously used was misleading. Updates scheduler instrumentation to follow this API change. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16markers: create DEFINE_MARKER and GET_MARKER (new API)Mathieu Desnoyers
Impact: new API. Allow markers to be used only for declaration, without function call associated. Useful to create specialized probes. The problem we had is that two function calls were required when one wanted to put a marker in a tracepoint probe. Now the marker can be used simply for trace data type declaration, leaving the trace write work within the tracepoint probe without any additional function call. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-15Merge branch 'doc-subdirs' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap/linux-docs * 'doc-subdirs' of git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap/linux-docs: Create/use more directory structure in the Documentation/ tree.
2008-11-14Create/use more directory structure in the Documentation/ tree.Randy Dunlap
Create Documentation/blockdev/ sub-directory and populate it. Populate the Documentation/serial/ sub-directory. Move MSI-HOWTO.txt to Documentation/PCI/. Move ioctl-number.txt to Documentation/ioctl/. Update all relevant 00-INDEX files. Update all relevant Kconfig files and source files. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
2008-11-13ftrace: rename iter_ctrl to trace_optionsSteven Rostedt
Impact: rename file /debug/tracing/iter_ctrl to /debug/tracing/trace_options The original ftrace had a file called "iter_ctrl" that would control the way the output was iterated. But this file grew into a catch all for different trace options. This patch renames the file from iter_ctrl to trace_options to reflect this change. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-13ftrace: show buffer size in kilobytesSteven Rostedt
Impact: change the units of buffer_size_kb to kilobytes This patch changes the units of the buffer_size_kb file to kilobytes. Reading and writing to the file uses kilobytes as units. To help users to know what units are used, the output of the file now looks like: # cat /debug/tracing/buffer_size_kb 1408 Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-13ftrace: rename trace_entries to buffer_size_kbSteven Rostedt
Impact: rename of debugfs file trace_entries to buffer_size_kb The original ftrace had fixed size entries, and the number of entries was shown and modified via the file called trace_entries. By converting to the unified trace buffer, we now allow for variable size entries which makes the meaning of trace_entries pointless. Since trace_size might be confused to the size of the trace, this patch names it "buffer_size_kb" (thanks to Arjan van de Ven for this idea). [ mingo@elte.hu: changed from buffer_size to buffer_size_kb ] ( Note, the units are still bytes - the next patch changes that, to keep the wide rename patch separate from the unit-change patch. ) Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-13Add c2 port supportRodolfo Giometti
C2port implements a two wire serial communication protocol (bit banging) designed to enable in-system programming, debugging, and boundary-scan testing on low pin-count Silicon Labs devices. Currently this code supports only flash programming through sysfs interface but extensions shoud be easy to add. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13hdq: documentation for OMAP HDQMadhusudhan Chikkature
Add a brief document about omap2430/3430 HDQ/1-wire driver. Signed-off-by: Madhusudhan Chikkature<madhu.cr@ti.com> Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13ics932s401: new clock generator chip driverDarrick J. Wong
The ics932s401 is a clock generator chip. This driver allows users to read the current clock outputs. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13adt7462: new hwmon driverDarrick J. Wong
New driver to play with. As Jean mentioned a couple of years ago, this chip is a beast with odd combinations of 8 fans, 4 temperatures, and 13 voltage sensors. This driver has been tested on an IntelliStation Z30. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13LIS3LV02Dx Accelerometer driverPavel Machek
This adds a driver to the accelerometer sensor found in several HP laptops (under the commercial names of "HP Mobile Data Protection System 3D" and "HP 3D driveguard"). It tries to have more or less the same interfaces as the hdaps and other accelerometer drivers: in sysfs and as a joystick. This driver was first written by Yan Burman. Eric Piel has updated it and slimed it up (including the removal of an interface to access to the free-fall feature of the sensor because it is not reliable enough for now). Pavel Machek removed few more features and switched locking from semaphore to mutex. Several people have contributed to the database of the axes. [eric.piel@tremplin-utc.net: LIS3LV02D: Conform to the new ACPI API] Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Yan Burman <burman.yan@gmail.com> Signed-off-by: Pavel Machek <pavel@suse.cz> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13DOC: update xip method infoMarco Stornelli
xip documentation updated: - change "get_xip_page" to "get_xip_mem"; - explain changed function parameters Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13DOC: add printk-formats.txtRandy Dunlap
Add printk-formats.txt so that we don't have to keep fixing the same things over and over again. <wishful thinking> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13freezer_cg: disable writing freezer.state of root cgroupLi Zefan
With this change, control file 'freezer.state' doesn't exist in root cgroup, making root cgroup unfreezable. I think it's reasonable to disallow freeze tasks in the root cgroup. And then we can avoid fork overhead when freezer subsystem is compiled but not used. Also make writing invalid value to freezer.state returns EINVAL rather than EIO. This is more consistent with other cgroup subsystem. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Cc: Paul Menage <menage@google.com> Cc: Matt Helsley <matthltc@us.ibm.com> Cc: "Serge E. Hallyn" <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (47 commits) ACPI: pci_link: remove acpi_irq_balance_set() interface fujitsu-laptop: Add DMI callback for Lifebook S6420 ACPI: EC: Don't do transaction from GPE handler in poll mode. ACPI: EC: lower interrupt storm treshold ACPICA: Use spinlock for acpi_{en|dis}able_gpe ACPI: EC: restart failed command ACPI: EC: wait for last write gpe ACPI: EC: make kernel messages more useful when GPE storm is detected ACPI: EC: revert msleep patch thinkpad_acpi: fingers off backlight if video.ko is serving this functionality sony-laptop: fingers off backlight if video.ko is serving this functionality msi-laptop: fingers off backlight if video.ko is serving this functionality fujitsu-laptop: fingers off backlight if video.ko is serving this functionality eeepc-laptop: fingers off backlight if video.ko is serving this functionality compal: fingers off backlight if video.ko is serving this functionality asus-acpi: fingers off backlight if video.ko is serving this functionality Acer-WMI: fingers off backlight if video.ko is serving this functionality ACPI video: if no ACPI backlight support, use vendor drivers ACPI: video: Ignore devices that aren't present in hardware Delete an unwanted return statement at evgpe.c ...
2008-11-12Merge branches 'tracing/ftrace' and 'tracing/urgent' into tracing/coreIngo Molnar
Conflicts: kernel/trace/ring_buffer.c
2008-11-12Merge branch 'video' into releaseLen Brown
Conflicts: Documentation/kernel-parameters.txt Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-12Merge branch 'misc' into releaseLen Brown
2008-11-12Merge branch 'bugzilla-11312' into releaseLen Brown
2008-11-11Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: ring-buffer: prevent infinite looping on time stamping ftrace: disable tracing on resize ftrace: fix breakage in bin_fmt results ftrace: ftrace.txt version update ftrace: update txt document
2008-11-11Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (35 commits) V4L/DVB (9516): cx18: Move DVB buffer transfer handling from irq handler to work_queue V4L/DVB (9557): gspca: Small changes for the sensor HV7131B in zc3xx. V4L/DVB (9556): gspca: Bad init sequence for sensor HV7131B in zc3xx. V4L/DVB (9549): gspca: Fix a typo in one of gspca chips name. V4L/DVB (9515): cx18: Use correct Mailbox IRQ Ack values and misc IRQ handling cleanup V4L/DVB (9493): kconfig patch V4L/DVB (9527): af9015: fix compile warnings V4L/DVB (9524): af9013: fix bug in status reading V4L/DVB (9511): cx18: Mark CX18_CPU_DE_RELEASE_MDL as a slow API call V4L/DVB (9510): cx18: Fix write retries for registers that always change - part 2. V4L/DVB (9506): ivtv/cx18: fix test whether modules should be loaded or not. V4L/DVB (9499): cx88-mpeg: final fix for analogue only compilation + de-alloc fix V4L/DVB (9496): cx88-blackbird: bugfix: cx88-blackbird-mpeg-users V4L/DVB (9495): cx88-blackbird: bugfix: cx88-blackbird-poll-fix V4L/DVB (9494): anysee: initialize anysee_usb_mutex statically V4L/DVB (9492): unplug oops from dvb_frontend_init... V4L/DVB (9486): ivtv/ivtvfb: no longer experimental V4L/DVB (9485): ivtv: remove incorrect V4L1 & tvaudio dependency V4L/DVB (9482): Documentation, especially regarding audio and informational links V4L/DVB (9475): cx18: Disable write retries for registers that always change - part 1. ...
2008-11-11Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc: Update desktop/server defconfigs powerpc: Fix msr check in compat_sys_swapcontext powerpc: Repair device bindings documentation powerpc: Updated Freescale PPC related defconfigs powerpc: Update QE/CPM2 usb_ctlr structures for USB support powerpc/86xx: Correct SOC bus-frequency in GE Fanuc SBC610 DTS powerpc: Fix Book-E watchdog timer interval setting powerpc/fsl-booke: Fix synchronization bug w/local tlb invalidates
2008-11-11V4L/DVB (9482): Documentation, especially regarding audio and informational ↵Tobias Lorenz
links This patch adds a recommendation to select SND_USB_AUDIO for listing and adds a documentation file for si470x. Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-11-11V4L/DVB (9369): Documentation update for cx88Rafael Diniz
Attached is a patch that updates the cx88 documentation to add the fact the closed caption works for at least NTSC capture. ps: I also updated the wiki at: http://www.linuxtv.org/v4lwiki/index.php/Text_capture#cx88_devices Signed-off-by: Rafael Diniz <diniz@wimobilis.com.br> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-11-11V4L/DVB (9337b): remove tuner-3036 and dpc7146 drivers from ↵Jean Delvare
feature-removal-schedule.txt The tuner-3036 and dpc7146 drivers have been deleted now so we can remove the corresponding entries from feature-removal-schedule.txt. (Thanks for doing this, BTW.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-11-11Merge branch 'tracing/urgent' into tracing/ftraceIngo Molnar
Conflicts: kernel/trace/trace.c
2008-11-11Merge branch 'devel' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent
2008-11-10powerpc: Repair device bindings documentationTrent Piepho
Commit d0fc2eaaf4c56a95f5ed29b6bfb609e19714fc16 "powerpc/fsl: Refactor device bindings" split out a number of device bindings from booting-without-of.txt into separate files. Having them all in one file was a frequent source of merge conflicts. However, in the next merge, 49997d75152b3d23c53b0fa730599f2f74c92c65, there was another conflict. Some of the bindings removed from booting-without-of.txt were mistakenly added back in and the copies in dts-bindings were kept as well. This patch re-removes "Freescale Display Interface" and "Freescale on board FPGA" and fixes the table of contents. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-11-08Merge branches 'tracing/ftrace', 'tracing/fastboot', 'tracing/nmisafe' and ↵Ingo Molnar
'tracing/urgent' into tracing/core
2008-11-08ACPI video: if no ACPI backlight support, use vendor driversThomas Renninger
If an ACPI graphics device supports backlight brightness functions (cmp. with latest ACPI spec Appendix B), let the ACPI video driver control backlight and switch backlight control off in vendor specific ACPI drivers (asus_acpi, thinkpad_acpi, eeepc, fujitsu_laptop, msi_laptop, sony_laptop, acer-wmi). Currently it is possible to load above drivers and let both poke on the brightness HW registers, the video and vendor specific ACPI drivers -> bad. This patch provides the basic support to check for BIOS capabilities before driver loading time. Driver specific modifications are in separate follow up patches. "acpi_backlight=vendor" Prever vendor driver over ACPI driver for backlight. "acpi_backlight=video" (default) Prever ACPI driver over vendor driver for backlight. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-08ACPI: update debug parameter documentationBjorn Helgaas
Reformat acpi.debug_layer and acpi.debug_level documentation so it's more readable, add some clues about how to figure out the mask bits that enable a specific ACPI_DEBUG_PRINT statement, and include some useful examples. Move the list of masks to Documentation/acpi/debug.txt (these are copies of the authoritative values in acoutput.h and acpi_drivers.h). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-06Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/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: Revert "x86: default to reboot via ACPI" x86: align DirectMap in /proc/meminfo AMD IOMMU: fix lazy IO/TLB flushing in unmap path x86: add smp_mb() before sending INVALIDATE_TLB_VECTOR x86: remove VISWS and PARAVIRT around NR_IRQS puzzle x86: mention ACPI in top-level Kconfig menu x86: size NR_IRQS on 32-bit systems the same way as 64-bit x86: don't allow nr_irqs > NR_IRQS x86/docs: remove noirqbalance param docs x86: don't use tsc_khz to calculate lpj if notsc is passed x86, voyager: fix smp_intr_init() compile breakage AMD IOMMU: fix detection of NP capable IOMMUs
2008-11-06fat: Fix ATTR_RO for directoryOGAWA Hirofumi
FAT has the ATTR_RO (read-only) attribute. But on Windows, the ATTR_RO of the directory will be just ignored actually, and is used by only applications as flag. E.g. it's setted for the customized folder by Explorer. http://msdn2.microsoft.com/en-us/library/aa969337.aspx This adds "rodir" option. If user specified it, ATTR_RO is used as read-only flag even if it's the directory. Otherwise, inode->i_mode is not used to hold ATTR_RO (i.e. fat_mode_can_save_ro() returns 0). Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>