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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2007-10-16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits) kbuild: introduce ccflags-y, asflags-y and ldflags-y kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP kbuild: enable use of AFLAGS and CFLAGS on commandline kbuild: enable 'make AFLAGS=...' to add additional options to AS kbuild: fix AFLAGS use in h8300 and m68knommu kbuild: check for wrong use of CFLAGS kbuild: enable 'make CFLAGS=...' to add additional options to CC kbuild: fix up CFLAGS usage kbuild: make modpost detect unterminated device id lists kbuild: call export_report from the Makefile kbuild: move Kai Germaschewski to CREDITS kconfig/menuconfig: distinguish between selected-by-another options and comments kconfig: tristate choices with mixed tristate and boolean values include/linux/Kbuild: remove duplicate entries kbuild: kill backward compatibility checks kbuild: kill EXTRA_ARFLAGS kbuild: fix documentation in makefiles.txt kbuild: call make once for all targets when O=.. is used kbuild: pass -g to assembler under CONFIG_DEBUG_INFO kbuild: update _shipped files for kconfig syntax cleanup ... Fix up conflicts in arch/um/sys-{x86_64,i386}/Makefile manually.
| * kbuild: introduce ccflags-y, asflags-y and ldflags-ySam Ravnborg2007-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce ccflags-y, asflags-y and ldflags-y so we soon can deprecate use of EXTRA_CFLAGS, EXTRA_AFLAGS and EXTRA_LDFLAGS. This patch does not touch any in-tree users - thats next round. Lets get this committed first and then fix the users of the soon to be deprecated variants next. The rationale behind this change is to introduce support for makefile fragments like: ccflags-$(CONFIG_WHATEVER_DEBUG) := -DDEBUG As a replacement for the uglier: ifeq ($(CONFIG_WHATEVER_DEBUG),y) EXTRA_CFLAGS := -DDEBUG endif Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: enable 'make CPPFLAGS=...' to add additional options to CPPSam Ravnborg2007-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable CPPFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. This patch replace use of CPPFLAGS with KBUILD_CPPFLAGS all over the tree and enabling one to use: make CPPFLAGS=... to specify additional CPP commandline options. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390 Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: enable 'make AFLAGS=...' to add additional options to ASSam Ravnborg2007-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable AFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of AFLAGS with KBUILD_AFLAGS all over the tree. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390 Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: enable 'make CFLAGS=...' to add additional options to CCSam Ravnborg2007-10-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable CFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of CFLAGS with KBUILD_CFLAGS all over the tree and enabling one to use: make CFLAGS=... to specify additional gcc commandline options. One usecase is when trying to find gcc bugs but other use cases has been requested too. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k Test was simple to do a defconfig build, apply the patch and check that nothing got rebuild. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: kill EXTRA_ARFLAGSSam Ravnborg2007-10-12
| | | | | | | | | | | | | | | | | | EXTRA_ARFLAGS have never been used so no need to carry around on this. A google search did not reveal any external module using this either. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix documentation in makefiles.txtSam Ravnborg2007-10-12
| | | | | | | | | | | | | | | | | | Small error had sneaked in with respect to use of LDFLAGS_$@. LDFLAGS_$@ is not valid in normal kbuild files so do not say so. Fix a reference bug too. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* | Merge branch 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsaLinus Torvalds2007-10-16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: (264 commits) [ALSA] version 1.0.15 [ALSA] Fix thinko in cs4231 mce down check [ALSA] sun-cs4231: improved waiting after MCE down [ALSA] sun-cs4231: use cs4231-regs.h [ALSA] This simplifies and fixes waiting loops of the mce_down() [ALSA] This patch adds support for a wavetable chip on [ALSA] This patch removes open_mutex from the ad1848-lib as [ALSA] fix bootup crash in snd_gus_interrupt() [ALSA] hda-codec - Fix SKU ID function for realtek codecs [ALSA] Support ASUS P701 eeepc [0x1043 0x82a1] support [ALSA] hda-codec - Add array terminator for dmic in STAC codec [ALSA] hdsp - Fix zero division [ALSA] usb-audio - Fix double comment [ALSA] hda-codec - Fix STAC922x volume knob control [ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz [ALSA] hda-codec - Fix for Fujitsu Lifebook C1410 [ALSA] mpu-401: remove MPU401_INFO_UART_ONLY flag [ALSA] mpu-401: do not require an ACK byte for the ENTER_UART command [ALSA] via82xx - Add DXS quirk for Shuttle AK31v2 [ALSA] hda-codec - Fix input_mux numbers for vaio stac92xx ...
| * | [ALSA] mpu-401: remove MPU401_INFO_UART_ONLY flagClemens Ladisch2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the last patch made the ENTER_UART command optional, the enter_uart option and its corresponding flag have become superfluous. The uart_enter option remains for backward compatibility but just prints a warning when used. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Fix Gateway laptops with STAC9200Takashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the output of Gateway laptops with STAC9200 codec chip. They require the EAPD control for some pins. These pins shouldn't be powered down. To enable EAPD control, a new model 'gateway' was added to STAC9200. The known PCI SSIDs are included in the quirk list. The fix was originally suggested by Brian Hinz, in ALSA bug#2948. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] Add description about power-saving modeTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | Added the description about power-saving mode on AC97 and HD-audio drivers. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] Add descriptions for new module options of snd-sscape driverTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Add descriptions for new module options of snd-sscape driver, wss_port and dma2. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] sc6000: documentation fixKrzysztof Helt2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | This patch fixes MPU-401 irq values list in documentation. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] Add description of sc6000 driverTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | Added the description of the new sc6000 driver to ALSA-Configuration.txt. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] document basic TLV stuffClemens Ladisch2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Add documentation about how to define dB scale information for mixer controls. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add missing model names for ALC882 codecsTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Added the missing model option strings for ALC882 codecs. Also added the corresponding description in ALSA-Configuration.txt. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add laptop-automute model for AD1986ATakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | Added a new model laptop-automute for AD1986A, which has the HP jack detection and auto-muting of the speaker. Currently, it's used for Lenovo N100. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] Add missing models for Dell with STAC9200 codecTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Added the missing description of models for Dell machines with STAC9200 HD-audio codec chip. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] cmipci: do not check for integrated FM/MIDI ports with chip version 37Clemens Ladisch2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Integrated MPU-401/OPL3 ports are available with chip version 39 and later, so we do not test for the port with version 37. Now that the test is known to work, we can again enable the MIDI port by default. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Fix Dell laptops support with STAC codecsTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixed Dell laptops support with STAC92xx codecs. Many pin-config models are introduced. See ALSA-Configuration.txt for details. The patch taken from ALSA bug#3319, originally by Jorg Prante: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3319 Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] cmipci: fix handling of FM/MIDI port addressesClemens Ladisch2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure that the MPU-401 MIDI and OPL-3 FM devices are used only on those chips where they are supported, and that the correct port addresses are used. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] wavefront - Use standard firmware loaderTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the standard firmware loader for loading ICS2115 OS firmware file. This is the last old bad guy that is still using sys_open() and sys_read() calls, and now all should be gone. The patch also adds the missing description of module options related with wavefront_synth.c. Due to this rewrite, user will have to copy or make symlink the firmware file appropriately to the standard firmware path such as /lib/firmware. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add support for Haier W66Kailang Yang2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Support Lenovo 420A (PCI SSID: 0x17aa 0x3bfc) 2. Support Haier W66 (PCI SSID: 0x1991 0x5625) Signed-off-by: Kailang Yang <kailang@realtek.com.tw> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add support for Macbook Pro rev3Takashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Added the support for Macbook Pro rev3 with ALC885 codec chip. The patch taken from ALSA bug#3242. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add ALC268 acer modelTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added model=acer for ALC268 codec support. The configuration is: headphone = 0x14, speaker = 0x15 needs hp-jack auto-detection. The same routine as alc262-fujitsu model is used. Also, added the auto-muting routine for ALC268 model=toshiba. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add option texts and descriptions for new Realtek modelsTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Added the missing text entries and descriptions for the newly added model values for Realtek codec chips. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-intel - Add power_save_controller module optionTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Add power_save_controller module option instead of define flag. Also, added descriptions of new module options in ALSA-Configuration.txt. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] This patch adds more support for Dell systems with Stac9205 codecs.Tobin Davis2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tested against a couple of different systems (with different pin configs), but the others should also work. Also cleaned up some of the 9205 patch code. Signed-off-by: Tobin Davis <tdavis@dsl-only.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - update of documentationTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Update the documentation to reflect the last changes regarding the power-saving mode and register caches. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] Fix OSS documentation about 3bytes formatTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | Now the OSS emulation supports 3bytes format, too. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] doc - Remove IRQF_DISABLED from the example descriptionTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | Remove the bogus IRQF_DISBLAED together with IRQF_SHARED from the example code in the document. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add support for Acer Aspire laptopsTobin Davis2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for some Acer Aspire systems. Signed-off-by: Tobin Davis <tdavis@dsl-only.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] hda-codec - Add more Dell systemsTobin Davis2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for Dell E520 and a couple of other 965 based systems. Signed-off-by: Tobin Davis <tdavis@dsl-only.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] Fixes to follow the standard coding styleTakashi Iwai2007-10-16
| | | | | | | | | | | | | | | | | | | | | Fixed the tutorial to follow the standard kernel coding style. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* | | Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2007-10-16
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block: (63 commits) Fix memory leak in dm-crypt SPARC64: sg chaining support SPARC: sg chaining support PPC: sg chaining support PS3: sg chaining support IA64: sg chaining support x86-64: enable sg chaining x86-64: update pci-gart iommu to sg helpers x86-64: update nommu to sg helpers x86-64: update calgary iommu to sg helpers swiotlb: sg chaining support i386: enable sg chaining i386 dma_map_sg: convert to using sg helpers mmc: need to zero sglist on init Panic in blk_rq_map_sg() from CCISS driver remove sglist_len remove blk_queue_max_phys_segments in libata revert sg segment size ifdefs Fixup u14-34f ENABLE_SG_CHAINING qla1280: enable use_sg_chaining option ...
| * \ \ Merge branch 'sglist-arch' into for-linusJens Axboe2007-10-16
| |\ \ \
| | * | | use sg helper function in DMA mapping documentationsaeed bishara2007-10-16
| | |/ / | | | | | | | | | | | | | | | | Signed-off-by: Saeed Bishara <saeed.bishara@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | Add Documentation/block/00-INDEXRob Landley2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Documentation/block/00-INDEX Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | Some IO scheduler cleanup in Documentation/blockAlan D. Brunelle2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | as-iosched.txt: o Changed IO scheduler selection text to a reference to the switching-sched.txt file. o Fixed typo: 'for up time...' -> 'for up to...' o Added short description of the est_time file. deadline-iosched.txt: o Changed IO scheduler selection text to a reference to the switching-sched.txt file. o Removed references to non-existent seek-cost and stream_unit. o Fixed typo: 'write_starved' -> 'writes_starved' switching-sched.txt: o Added in boot-time argument to set the default IO scheduler. (From as-iosched.txt) o Added in sysfs mount instructions. (From deadline-iosched.txt) Signed-off-by: Alan D. Brunelle <Alan.Brunelle@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | Update Jens Axboe's email in Documentation/*Rob Landley2007-10-16
| |/ / | | | | | | | | | | | | | | | | | | Jens Axboe's old email address bounces. Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | fbcon: logo: disable logo at bootRandy Dunlap2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add logo.nologo kernel boot option to disable the logo in order to provide more screen space for kernel messages; especially useful when debugging and screen space is more critical. newport_con driver changes are untested. [akpm@linux-foundation.org: cleanups, coding-style fixes] Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | fbdev: Update Documentation/fb/00-INDEXJesper Juhl2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An update to Documentation/fb/00-INDEX is long overdue. This patch adds entries for new files in the directory and removes entries for files that no longer exist. The files are now also sorted alphabetically. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | uvesafb: documentationMichal Januszewski2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | Documentation for the uvesafb driver. Signed-off-by: Michal Januszewski <spock@gentoo.org> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | spi doesn't need class_deviceTony Jones2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the SPI framework and drivers stop using class_device. Update docs accordingly ... highlighting just which sysfs paths should be "safe"/stable. Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Documentation/spi/spidev_test.c: constify some variablesWANG Cong2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Constify two char pointers and a struct in Documentation/spi/spidev_test.c. Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | cpuset: remove sched domain hooks from cpusetsPaul Jackson2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the cpuset hooks that defined sched domains depending on the setting of the 'cpu_exclusive' flag. The cpu_exclusive flag can only be set on a child if it is set on the parent. This made that flag painfully unsuitable for use as a flag defining a partitioning of a system. It was entirely unobvious to a cpuset user what partitioning of sched domains they would be causing when they set that one cpu_exclusive bit on one cpuset, because it depended on what CPUs were in the remainder of that cpusets siblings and child cpusets, after subtracting out other cpu_exclusive cpusets. Furthermore, there was no way on production systems to query the result. Using the cpu_exclusive flag for this was simply wrong from the get go. Fortunately, it was sufficiently borked that so far as I know, almost no successful use has been made of this. One real time group did use it to affectively isolate CPUs from any load balancing efforts. They are willing to adapt to alternative mechanisms for this, such as someway to manipulate the list of isolated CPUs on a running system. They can do without this present cpu_exclusive based mechanism while we develop an alternative. There is a real risk, to the best of my understanding, of users accidentally setting up a partitioned scheduler domains, inhibiting desired load balancing across all their CPUs, due to the nonobvious (from the cpuset perspective) side affects of the cpu_exclusive flag. Furthermore, since there was no way on a running system to see what one was doing with sched domains, this change will be invisible to any using code. Unless they have real insight to the scheduler load balancing choices, they will be unable to detect that this change has been made in the kernel's behaviour. Initial discussion on lkml of this patch has generated much comment. My (probably controversial) take on that discussion is that it has reached a rough concensus that the current cpuset cpu_exclusive mechanism for defining sched domains is borked. There is no concensus on the replacement. But since we can remove this mechanism, and since its continued presence risks causing unwanted partitioning of the schedulers load balancing, we should remove it while we can, as we proceed to work the replacement scheduler domain mechanisms. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Christoph Lameter <clameter@engr.sgi.com> Cc: Dinakar Guniguntala <dino@in.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | flush icache before set_pte() on ia64: flush icache at set_pteKAMEZAWA Hiroyuki2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current ia64 kernel flushes icache by lazy_mmu_prot_update() *after* set_pte(). This is too late. This patch removes lazy_mmu_prot_update and add modfied set_pte() for flushing if necessary. This patch flush icache of a page when new pte has exec bit. && new pte has present bit && new pte is user's page. && (old *ptep is not present || new pte's pfn is not same to old *ptep's ptn) && new pte's page has no Pg_arch_1 bit. Pg_arch_1 is set when a page is cache consistent. I think this condition checks are much easier to understand than considering "Where sync_icache_dcache() should be inserted ?". pte_user() for ia64 was removed by http://lkml.org/lkml/2007/6/12/67 as clean-up. So, I added it again. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Memoryless nodes: Use N_HIGH_MEMORY for cpusetsChristoph Lameter2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cpusets try to ensure that any node added to a cpuset's mems_allowed is on-line and contains memory. The assumption was that online nodes contained memory. Thus, it is possible to add memoryless nodes to a cpuset and then add tasks to this cpuset. This results in continuous series of oom-kill and apparent system hang. Change cpusets to use node_states[N_HIGH_MEMORY] [a.k.a. node_memory_map] in place of node_online_map when vetting memories. Return error if admin attempts to write a non-empty mems_allowed node mask containing only memoryless-nodes. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: Bob Picco <bob.picco@hp.com> Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@skynet.ie> 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>
* | | fs: remove some AOP_TRUNCATED_PAGENick Piggin2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | prepare/commit_write no longer returns AOP_TRUNCATED_PAGE since OCFS2 and GFS2 were converted to the new aops, so we can make some simplifications for that. [michal.k.k.piotrowski@gmail.com: fix warning] Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | fs: introduce write_begin, write_end, and perform_write aopsNick Piggin2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These are intended to replace prepare_write and commit_write with more flexible alternatives that are also able to avoid the buffered write deadlock problems efficiently (which prepare_write is unable to do). [mark.fasheh@oracle.com: API design contributions, code review and fixes] [akpm@linux-foundation.org: various fixes] [dmonakhov@sw.ru: new aop block_write_begin fix] Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Dmitriy Monakhov <dmonakhov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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