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2009-04-14Merge branch 'linus' into tracing/coreIngo Molnar
Merge reason: merge latest tracing fixes to avoid conflicts in kernel/trace/trace_events_filter.c with upcoming change Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-14tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()Tom Zanussi
This patch changes filter_check_discard() to make use of the new ring_buffer_discard_commit() function and modifies the current users to call the old commit function in the non-discard case. It also introduces a version of filter_check_discard() that uses the global trace buffer (filter_current_check_discard()) for those cases. v2 changes: - fix compile error noticed by Ingo Molnar Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: fweisbec@gmail.com LKML-Reference: <1239178554.10295.36.camel@tropicana> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-14tracing/infrastructure: separate event tracer from event supportTom Zanussi
Add a new config option, CONFIG_EVENT_TRACING that gets selected when CONFIG_TRACING is selected and adds everything needed by the stuff in trace_export - basically all the event tracing support needed by e.g. bprint, minus the actual events, which are only included if CONFIG_EVENT_TRACER is selected. So CONFIG_EVENT_TRACER can be used to turn on or off the generated events (what I think of as the 'event tracer'), while CONFIG_EVENT_TRACING turns on or off the base event tracing support used by both the event tracer and the other things such as bprint that can't be configured out. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: fweisbec@gmail.com LKML-Reference: <1239178441.10295.34.camel@tropicana> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-14tracing/filters: use ring_buffer_discard_commit for discarded eventsSteven Rostedt
The ring_buffer_discard_commit makes better usage of the ring_buffer when an event has been discarded. It tries to remove it completely if possible. This patch converts the trace event filtering to use ring_buffer_discard_commit instead of the ring_buffer_event_discard. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-14ring-buffer: add ring_buffer_discard_commitSteven Rostedt
The ring_buffer_discard_commit is similar to ring_buffer_event_discard but it can only be done on an event that has yet to be commited. Unpredictable results can happen otherwise. The main difference between ring_buffer_discard_commit and ring_buffer_event_discard is that ring_buffer_discard_commit will try to free the data in the ring buffer if nothing has addded data after the reserved event. If something did, then it acts almost the same as ring_buffer_event_discard followed by a ring_buffer_unlock_commit. Note, either ring_buffer_commit_discard and ring_buffer_unlock_commit can be called on an event, not both. This commit also exports both discard functions to be usable by GPL modules. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-14tracing/filters: add TRACE_EVENT_FORMAT_NOFILTER event macroTom Zanussi
Frederic Weisbecker suggested that the trace_special event shouldn't be filterable; this patch adds a TRACE_EVENT_FORMAT_NOFILTER event macro that allows an event format to be exported without having a filter attached, and removes filtering from the trace_special event. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-14tracing/filters: add run-time field descriptions to TRACE_EVENT_FORMAT eventsTom Zanussi
This patch adds run-time field descriptions to all the event formats exported using TRACE_EVENT_FORMAT. It also hooks up all the tracers that use them (i.e. the tracers in the 'ftrace subsystem') so they can also have their output filtered by the event-filtering mechanism. When I was testing this, there were a couple of things that fooled me into thinking the filters weren't working, when actually they were - I'll mention them here so others don't make the same mistakes (and file bug reports. ;-) One is that some of the tracers trace multiple events e.g. the sched_switch tracer uses the context_switch and wakeup events, and if you don't set filters on all of the traced events, the unfiltered output from the events without filters on them can make it look like the filtering as a whole isn't working properly, when actually it is doing what it was asked to do - it just wasn't asked to do the right thing. The other is that for the really high-volume tracers e.g. the function tracer, the volume of filtered events can be so high that it pushes the unfiltered events out of the ring buffer before they can be read so e.g. cat'ing the trace file repeatedly shows either no output, or once in awhile some output but that isn't there the next time you read the trace, which isn't what you normally expect when reading the trace file. If you read from the trace_pipe file though, you can catch them before they disappear. Changes from v1: As suggested by Frederic Weisbecker: - get rid of externs in functions - added unlikely() to filter_check_discard() Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: docbook: make cleandocs kbuild: fix spurious initramfs rebuild Documentation: explain the difference between __bitwise and __bitwise__ kbuild: make it possible for the linker to discard local symbols from vmlinux kbuild: remove pointless strdup() on arguments passed to new_module() in modpost kbuild: fix a few typos in top-level Makefile kbuild: introduce destination-y for exported headers kbuild: use git svn instead of git-svn in setlocalversion kconfig: fix update-po-config to accect backslash in input kbuild: fix option processing for -I in headerdep
2009-04-13Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: ata: fix obviously wrong comment ahci: force CAP_NCQ for earlier NV MCPs [libata] sata_via: kill uninit'd var warning
2009-04-13Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (22 commits) Input: i8042 - add HP DV9700 to the noloop list Input: arrange drivers/input/misc/Makefile in alphabetical order Input: add AD7879 Touchscreen driver Input: add AD7877 touchscreen driver Input: bf54x-keys - fix typo in warning Input: add driver for S1 button of rb532 Input: generic driver for rotary encoders on GPIOs Input: hilkbd - fix crash when removing hilkbd module Input: atkbd - add quirk for Fujitsu Siemens Amilo PA 1510 Input: atkbd - consolidate force release quirk setup Input: add accelerated touchscreen support for Marvell Zylonite Input: ucb1400_ts, mainstone-wm97xx - add BTN_TOUCH events Input: wm97xx - use disable_irq_nosync() for Mainstone Input: wm97xx - add BTN_TOUCH event to wm97xx to use it with Android Input: fix polling of /proc/bus/input/devices Input: psmouse - add newline to OLPC HGPK touchpad debugging Input: ati_remote2 - check module params Input: ati_remote2 - add per device attrs Input: ati_remote2 - complete suspend support Input: stop autorepeat timer on key release ...
2009-04-13PM/Hibernate: Wait for SCSI devices scan to complete during resumeRafael J. Wysocki
There is a race between resume from hibernation and the asynchronous scanning of SCSI devices and to prevent it from happening we need to call scsi_complete_async_scans() during resume from hibernation. In addition, if the resume from hibernation is userland-driven, it's better to wait for all device probes in the kernel to complete before attempting to open the resume device. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13Merge git://git.infradead.org/iommu-2.6Linus Torvalds
* git://git.infradead.org/iommu-2.6: intel-iommu: Avoid panic() for DRHD at address zero. Intel-IOMMU Alignment Issue in dma_pte_clear_range()
2009-04-13Merge 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: add linux kernel support for YMM state x86: fix wrong section of pat_disable & make it static x86: Fix section mismatches in mpparse x86: fix set_fixmap to use phys_addr_t x86: Document get_user_pages_fast() x86, intr-remap: fix eoi for interrupt remapping without x2apic
2009-04-13Merge 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: tracing/filters: return proper error code when writing filter file tracing/filters: allow user input integer to be oct or hex tracing/filters: fix NULL pointer dereference tracing/filters: NIL-terminate user input filter ftrace: Output REC->var instead of __entry->var for trace format Make __stringify support variable argument macros too tracing: fix document references tracing: fix splice return too large tracing: update file->f_pos when splice(2) it tracing: allocate page when needed tracing: disable seeking for trace_pipe_raw
2009-04-13Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/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: lockdep: continue lock debugging despite some taints lockdep: warn about lockdep disabling after kernel taint
2009-04-13cpufreq: use smp_call_function_[single|many]() in acpi-cpufreq.cAndrew Morton
Atttempting to rid us of the problematic work_on_cpu(). Just use smp_call_fuction_single() here. This repairs a 10% sysbench(oltp)+mysql regression which Mike reported, due to commit 6b44003e5ca66a3fffeb5bc90f40ada2c4340896 Author: Andrew Morton <akpm@linux-foundation.org> Date: Thu Apr 9 09:50:37 2009 -0600 work_on_cpu(): rewrite it to create a kernel thread on demand It seems that the kernel calls these acpi-cpufreq functions at a quite high frequency. Valdis Kletnieks also reports that this causes 70-90 forks per second on his hardware. Cc: Valdis.Kletnieks@vt.edu Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Zhao Yakui <yakui.zhao@intel.com> Acked-by: Dave Jones <davej@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Tested-by: Mike Galbraith <efault@gmx.de> Cc: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Ingo Molnar <mingo@elte.hu> [ Made it use smp_call_function_many() instead of looping over cpu's with smp_call_function_single() - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Let new-style drivers implement attach_adapter i2c: Fix sparse warnings for I2C_BOARD_INFO() i2c-voodoo3: Deprecate in favor of tdfxfb i2c-algo-pca: Fix use of uninitialized variable in debug message
2009-04-13add some long-missing capabilities to fs_maskSerge E. Hallyn
When POSIX capabilities were introduced during the 2.1 Linux cycle, the fs mask, which represents the capabilities which having fsuid==0 is supposed to grant, did not include CAP_MKNOD and CAP_LINUX_IMMUTABLE. However, before capabilities the privilege to call these did in fact depend upon fsuid==0. This patch introduces those capabilities into the fsmask, restoring the old behavior. See the thread starting at http://lkml.org/lkml/2009/3/11/157 for reference. Note that if this fix is deemed valid, then earlier kernel versions (2.4 and 2.2) ought to be fixed too. Changelog: [Mar 23] Actually delete old CAP_FS_SET definition... [Mar 20] Updated against J. Bruce Fields's patch Reported-by: Igor Zhbanov <izh1979@gmail.com> Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: stable@kernel.org Cc: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13Merge branch 'gm_20090410' of git://repo.or.cz/linux-2.6/trivial-modsLinus Torvalds
* 'gm_20090410' of git://repo.or.cz/linux-2.6/trivial-mods: MAINTAINERS - Update MN10300 patterns MAINTAINERS - Update frv arch patterns scripts/get_maintainer.pl - Allow multiple files on command line MAINTAINERS - Update Freescale sound patterns MAINTAINERS - Add additional patterns MAINTAINERS - Add missing "/" to some pattern directories MAINTAINERS - Update DRIVER CORE patterns MAINTAINERS - Update M68K patterns MAINTAINERS - Coalesce sections "DVB" and "Video for Linux" MAINTAINERS - Remove cyblafb frame buffer no longer in tree MAINTAINERS - Remove x86/Voyager no longer in tree MAINTAINERS - Update FPU Emulator contact address and web page MAINTAINERS - i2c_tiny_usb T: should be W: MAINTAINERS - Add Linus Torvalds' git MAINTAINERS - standardize "T: git urls" MAINTAINERS - Remove HP Fibre Channel HBA no longer in tree MAINTAINERS - Standardize style MAINTAINERS - Add file patterns Add scripts/get_maintainer.pl Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Andrew Morton <akpm@linux-foundation.org>
2009-04-13Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/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: percpu: unbreak alpha percpu mutex: have non-spinning mutexes on s390 by default
2009-04-13Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-ledsLinus Torvalds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds: just ignore invalid GPIOs in leds-gpio
2009-04-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] omap_wdt.c: move probe function to .devinit.text [WATCHDOG] ks8695_wdt.c: move probe function to .devinit.text [WATCHDOG] at91rm9200_wdt.c: move probe function to .devinit.text [WATCHDOG] remove ARM26 sections [WATCHDOG] orion5x_wdt: Add shutdown callback, use watchdog ping function [WATCHDOG] i6300esb.c: Restructure initialization of the device [WATCHDOG] i6300esb.c: Fix the GETSTATUS and GETBOOTSTATUS ioctls. [WATCHDOG] i6300esb.c: Cleanup
2009-04-13Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (60 commits) microblaze_v8: Add MAINTAINERS fragment microblaze_v8: Uartlite for Microblaze microblaze_v8: Makefiles for Microblaze cpu microblaze_v8: Kconfig patches microblaze_v8: Interrupt handling and timer support microblaze_v8: syscalls.h microblaze_v8: pci headers microblaze_v8: Kbuild file microblaze_v8: string.h thread_info.h microblaze_v8: unistd.h microblaze_v8: fcntl.h sockios.h ucontext.h microblaze_v8: pool.h socket.h microblaze_v8: device.h param.h topology.h microblaze_v8: headers files entry.h current.h mman.h registers.h sembuf.h microblaze_v8: namei.h microblaze_v8: gpio.h, serial.h microblaze_v8: headers simple files - empty or redirect to asm-generic microblaze_v8: sigcontext.h siginfo.h microblaze_v8: termbits.h termios.h microblaze_v8: stats headers ...
2009-04-13i2c: Let new-style drivers implement attach_adapterJean Delvare
While it isn't the way the standard device binding model works, it is OK for new-style drivers to implement attach_adapter. It may help convert the renaming legacy drivers to new style drivers faster. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <dbrownell@users.sourceforge.net>
2009-04-13i2c: Fix sparse warnings for I2C_BOARD_INFO()Ben Hutchings
Since the first argument to I2C_BOARD_INFO() must be a string constant, there is no need to parenthesise it, and adding parentheses results in an invalid initialiser for char[]. gcc obviously accepts this syntax as an extension, but sparse complains, e.g.: drivers/net/sfc/boards.c:173:2: warning: array initialized from parenthesized string constant Therefore, remove the parentheses. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-04-13i2c-voodoo3: Deprecate in favor of tdfxfbJean Delvare
Support for I2C/DDC was recently added to the tdfxfb driver, which means that the i2c-voodoo3 driver can be deprecated. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
2009-04-13i2c-algo-pca: Fix use of uninitialized variable in debug messageJean Delvare
A recent change broke debugging of pca_xfer(), fix it. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2009-04-13ata: fix obviously wrong commentVegard Nossum
Also remove the now-useless debug printouts which are supposed to tell us when the scan starts and ends. Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-13ahci: force CAP_NCQ for earlier NV MCPsTejun Heo
Along with MCP65, MCP67 and 73 also don't set CAP_NCQ. Force it. Reported by zaceni@yandex.ru on bko#13014 and confirmed by Peer Chen. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: NightFox <zaceni2@yandex.ru> Cc: Peer Chen <pchen@nvidia.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-13[libata] sata_via: kill uninit'd var warningJeff Garzik
Reported and initial patch by Marin Mitov. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-12lockdep: continue lock debugging despite some taintsFrederic Weisbecker
Impact: broaden lockdep checks Lockdep is disabled after any kernel taints. This might be convenient to ignore bad locking issues which sources come from outside the kernel tree. Nevertheless, it might be a frustrating experience for the staging developers or those who experience a warning but are focused on another things that require lockdep. The v2 of this patch simply don't disable anymore lockdep in case of TAINT_CRAP and TAINT_WARN events. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: LTP <ltp-list@lists.sourceforge.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Greg KH <gregkh@suse.de> LKML-Reference: <1239412638-6739-2-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12lockdep: warn about lockdep disabling after kernel taintFrederic Weisbecker
Impact: provide useful missing info for developers Kernel taint can occur in several situations such as warnings, load of prorietary or staging modules, bad page, etc... But when such taint happens, a developer might still be working on the kernel, expecting that lockdep is still enabled. But a taint disables lockdep without ever warning about it. Such a kernel behaviour doesn't really help for kernel development. This patch adds this missing warning. Since the taint is done most of the time after the main message that explain the real source issue, it seems safe to warn about it inside add_taint() so that it appears at last, without hurting the main information. v2: Use a generic helper to disable lockdep instead of an open coded xchg(). Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1239412638-6739-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12blktrace: fix output of BLK_TC_PC eventsLi Zefan
BLK_TC_PC events should be treated differently with BLK_TC_FS events. Before this patch: # echo 1 > /sys/block/sda/sda1/trace/enable # echo pc > /sys/block/sda/sda1/trace/act_mask # echo blk > /debugfs/tracing/current_tracer # (generate some BLK_TC_PC events) # cat trace bash-2184 [000] 1774.275413: 8,7 I N [bash] bash-2184 [000] 1774.275435: 8,7 D N [bash] bash-2184 [000] 1774.275540: 8,7 I R [bash] bash-2184 [000] 1774.275547: 8,7 D R [bash] ksoftirqd/0-4 [000] 1774.275580: 8,7 C N 0 [0] bash-2184 [000] 1774.275648: 8,7 I R [bash] bash-2184 [000] 1774.275653: 8,7 D R [bash] ksoftirqd/0-4 [000] 1774.275682: 8,7 C N 0 [0] bash-2184 [000] 1774.275739: 8,7 I R [bash] bash-2184 [000] 1774.275744: 8,7 D R [bash] ksoftirqd/0-4 [000] 1774.275771: 8,7 C N 0 [0] bash-2184 [000] 1774.275804: 8,7 I R [bash] bash-2184 [000] 1774.275808: 8,7 D R [bash] ksoftirqd/0-4 [000] 1774.275836: 8,7 C N 0 [0] After this patch: # cat trace bash-2263 [000] 366.782149: 8,7 I N 0 (00 ..) [bash] bash-2263 [000] 366.782323: 8,7 D N 0 (00 ..) [bash] bash-2263 [000] 366.782557: 8,7 I R 8 (25 00 ..) [bash] bash-2263 [000] 366.782560: 8,7 D R 8 (25 00 ..) [bash] ksoftirqd/0-4 [000] 366.782582: 8,7 C N (25 00 ..) [0] bash-2263 [000] 366.782648: 8,7 I R 8 (5a 00 3f 00) [bash] bash-2263 [000] 366.782650: 8,7 D R 8 (5a 00 3f 00) [bash] ksoftirqd/0-4 [000] 366.782669: 8,7 C N (5a 00 3f 00) [0] bash-2263 [000] 366.782710: 8,7 I R 8 (5a 00 08 00) [bash] bash-2263 [000] 366.782713: 8,7 D R 8 (5a 00 08 00) [bash] ksoftirqd/0-4 [000] 366.782730: 8,7 C N (5a 00 08 00) [0] bash-2263 [000] 366.783375: 8,7 I R 36 (5a 00 08 00) [bash] bash-2263 [000] 366.783379: 8,7 D R 36 (5a 00 08 00) [bash] ksoftirqd/0-4 [000] 366.783404: 8,7 C N (5a 00 08 00) [0] This is what we do with PC events in user-space blktrace. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <49D32387.9040106@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12blktrace: fix output of unknown eventsLi Zefan
Not all events are pc (packet command) events. An event is a pc event only if it has BLK_TC_PC bit set. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <49D3236D.3090705@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing, kmemtrace: Make kmem tracepoints use TRACE_EVENT macroZhaolei
TRACE_EVENT is a more generic way to define tracepoints. Doing so adds these new capabilities to this tracepoint: - zero-copy and per-cpu splice() tracing - binary tracing without printf overhead - structured logging records exposed under /debug/tracing/events - trace events embedded in function tracer output and other plugins - user-defined, per tracepoint filter expressions Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Acked-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <49DEE6DA.80600@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing, kmemtrace: Separate include/trace/kmemtrace.h to kmemtrace part and ↵Zhaolei
tracepoint part Impact: refactor code for future changes Current kmemtrace.h is used both as header file of kmemtrace and kmem's tracepoints definition. Tracepoints' definition file may be used by other code, and should only have definition of tracepoint. We can separate include/trace/kmemtrace.h into 2 files: include/linux/kmemtrace.h: header file for kmemtrace include/trace/kmem.h: definition of kmem tracepoints Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Acked-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <49DEE68A.5040902@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing: Document the event tracing systemTheodore Ts'o
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1239479479-2603-3-git-send-email-tytso@mit.edu> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing: Add documentation for the power tracerTheodore Ts'o
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <srostedt@redhat.com> LKML-Reference: <1239479479-2603-4-git-send-email-tytso@mit.edu> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12x86: add linux kernel support for YMM stateSuresh Siddha
Impact: save/restore Intel-AVX state properly between tasks Intel Advanced Vector Extensions (AVX) introduce 256-bit vector processing capability. More about AVX at http://software.intel.com/sites/avx Add OS support for YMM state management using xsave/xrstor infrastructure to support AVX. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <1239402084.27006.8057.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12x86: fix wrong section of pat_disable & make it staticMarcin Slusarz
pat_disable cannot be __cpuinit anymore because it's called from pat_init and the callchain looks like this: pat_disable [cpuinit] <- pat_init <- generic_set_all <- ipi_handler <- set_mtrr <- (other non init/cpuinit functions) WARNING: arch/x86/mm/built-in.o(.text+0x449e): Section mismatch in reference from the function pat_init() to the function .cpuinit.text:pat_disable() The function pat_init() references the function __cpuinit pat_disable(). This is often because pat_init lacks a __cpuinit annotation or the annotation of pat_disable is wrong. Non CONFIG_X86_PAT version of pat_disable is static inline, so this version can be static too (and there are no callers outside of this file). Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <49DFB055.6070405@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12x86: Fix section mismatches in mpparseRakib Mullick
Impact: fix section mismatch In arch/x86/kernel/mpparse.c, smp_reserve_bootmem() has been called and also refers to a function which is in .init section. Thus causes the first warning. And check_irq_src() also requires an __init, because it refers to an .init section. Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <b9df5fa10904102004g51265d9axc8d07278bfdb6ba0@mail.gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing/filters: return proper error code when writing filter fileLi Zefan
- propagate return value of filter_add_pred() to the user - return -ENOSPC but not -ENOMEM or -EINVAL when the filter array is full Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <49E04CF0.3010105@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing/filters: allow user input integer to be oct or hexLi Zefan
Before patch: # echo 'parent_pid == 0x10' > events/sched/sched_process_fork/filter # cat sched/sched_process_fork/filter parent_pid == 0 After patch: # cat sched/sched_process_fork/filter parent_pid == 16 Also check the input more strictly. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <49E04C53.4010600@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing/filters: fix NULL pointer dereferenceLi Zefan
Try this, and you'll see NULL pointer dereference bug: # echo -n 'parent_comm ==' > sched/sched_process_fork/filter Because we passed NULL ptr to simple_strtoull(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <49E04C43.1050504@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-12tracing/filters: NIL-terminate user input filterLi Zefan
Make sure messages from user space are NIL-terminated strings, otherwise we could dump random memory while reading filter file. Try this: # echo 'parent_comm ==' > events/sched/sched_process_fork/filter # cat events/sched/sched_process_fork/filter parent_comm == � Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <49E04C32.6060508@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-11Revert "ACPI battery: fix async boot oops"Linus Torvalds
This reverts commit 5d38258ec026921a7b266f4047ebeaa75db358e5, since the underlying problem got fixed properly in the previous commit ("async: Fix module loading async-work regression"). Cc: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> Cc: Len Brown <len.brown@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-11async: Fix module loading async-work regressionLinus Torvalds
Several drivers use asynchronous work to do device discovery, and we synchronize with them in the compiled-in case before we actually try to mount root filesystems etc. However, when compiled as modules, that synchronization is missing - the module loading completes, but the driver hasn't actually finished probing for devices, and that means that any user mode that expects to use the devices after the 'insmod' is now potentially broken. We already saw one case of a similar issue in the ACPI battery code, where the kernel itself expected the module to be all done, and unmapped the init memory - but the async device discovery was still running. That got hacked around by just removing the "__init" (see commit 5d38258ec026921a7b266f4047ebeaa75db358e5 "ACPI battery: fix async boot oops"), but the real fix is to just make the module loading wait for all async work to be completed. It will slow down module loading, but since common devices should be built in anyway, and since the bug is really annoying and hard to handle from user space (and caused several S3 resume regressions), the simple fix to wait is the right one. This fixes at least http://bugzilla.kernel.org/show_bug.cgi?id=13063 but probably a few other bugzilla entries too (12936, for example), and is confirmed to fix Rafael's storage driver breakage after resume bug report (no bugzilla entry). We should also be able to now revert that ACPI battery fix. Reported-and-tested-by: Rafael J. Wysocki <rjw@suse.com> Tested-by: Heinz Diehl <htd@fancy-poultry.org> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-11docbook: make cleandocsRandy Dunlap
Add a 'make cleandocs' target to clean up all generated DocBook files. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-11kbuild: fix spurious initramfs rebuildMaxime Bizon
When gen_initramfs_list is used to generate make dependencies, it includes symbolic links, for which make tracks the link target. Any change to that target will cause an initramfs rebuild, even if the symlink points to something outside of the initramfs directory. If the target happens to be /tmp, the rebuild occurs for each kernel build, since gen_initramfs_list uses mktemp... Proposed way to fix it is to omit symbolic links from generated dependencies, but this has a small drawback: changing perm/owner on a symlink will go unnoticed. Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-11Documentation: explain the difference between __bitwise and __bitwise__Sam Ravnborg
Simply added explanation from Al Viro in the following mail: http://lkml.indiana.edu/hypermail/linux/kernel/0802.2/3164.html Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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