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2008-11-07ACPI: update debug parameter documentationBjorn Helgaas1-52/+23
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>
2008-10-23Merge branch 'linus' into testLen Brown1-21/+102
Conflicts: MAINTAINERS arch/x86/kernel/acpi/boot.c arch/x86/kernel/acpi/sleep.c drivers/acpi/Kconfig drivers/pnp/Makefile drivers/pnp/quirks.c Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22Merge branch 'pnp-debug' into testLen Brown1-0/+4
2008-10-22Merge branch 'misc' into testLen Brown1-1/+1
2008-10-22ACPI: Add "acpi.power_nocheck=1" to disable power state check in power ↵Zhao Yakui1-0/+8
transition Maybe the incorrect power state is returned on the bogus bios, which is different with the real power state. For example: the bios returns D0 state and the real power state is D3. OS expects to set the device to D0 state. In such case if OS uses the power state returned by the BIOS and checks the device power state very strictly in power transition, the device can't be transited to the correct power state. So the boot option of "acpi.power_nocheck=1" is added to avoid checking the device power in the course of device power transition. http://bugzilla.kernel.org/show_bug.cgi?id=8049 http://bugzilla.kernel.org/show_bug.cgi?id=11000 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Li Shaohua <shaohua.li@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22ACPI: Add expand acpi.debug_layer in kernel-parameters.txtThomas Renninger1-14/+33
Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-20PCI: document the pcie_aspm kernel parameterChuck Ebbert1-0/+6
It can be handy so make sure people know about it. Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20PCI: Document that most pci options are shared between i386 and x86-64Andi Kleen1-12/+13
Since the code is shared pretty much most of the pci= options are shared, but kernel-parameters.txt marked most of them as i386 only. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds1-1/+11
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (112 commits) sh: Move SH-4 CPU headers down one more level. sh: Only build in gpio.o when CONFIG_GENERIC_GPIO is selected. sh: Migrate common board headers to mach-common/. sh: Move the CPU definition headers from asm/ to cpu/. serial: sh-sci: Add support SCIF of SH7723 video: add sh_mobile_lcdc platform flags video: remove unused sh_mobile_lcdc platform data sh: remove consistent alloc cruft sh: add dynamic crash base address support sh: reduce Migo-R smc91x overruns sh: Fix up some merge damage. Fix debugfs_create_file's error checking method for arch/sh/mm/ Fix debugfs_create_dir's error checking method for arch/sh/kernel/ sh: ap325rxa: Add support RTC RX-8564LC in AP325RXA board sh: Use sh7720 GPIO on magicpanelr2 board sh: Add sh7720 pinmux code sh: Use sh7203 GPIO on rsk7203 board sh: Add sh7203 pinmux code sh: Use sh7723 GPIO on AP325RXA board sh: Add sh7723 pinmux code ...
2008-10-20kdump: update elfcorehdr documentation to reflect supported architecturesSimon Horman1-1/+1
IA64, PPC and SH also support the elfcorehdr command line. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20Merge branch 'master' of ↵Paul Mundt1-7/+71
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/kernel-parameters.txt arch/sh/include/asm/elf.h
2008-10-17USB: hub.c: Add initial_descriptor_timeout module parameter for usbcoreJaroslav Kysela1-0/+19
This patch adds initial_descriptor_timeout module parameter for usbcore.ko to allow modify initial 64-byte USB_REQ_GET_DESCRIPTOR timeout for non-standard devices. For example, the SATA8000 device from DATAST0R Technology Corp requires about 10 seconds to send reply (probably it waits until inserted disk is ready for operation). Also, this patch adds missing usbcore parameters to Documentation/kernel-parameters.txt. Signed-off-by: Jaroslav Kysela <perex@perex.cz> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-10-17ACPI: Allow overriding to higher critical trip point.Zhang Rui1-1/+1
http://bugzilla.kernel.org/show_bug.cgi?id=9129 lenb: Note that overriding a critical trip point may simply fool the user into thinking that they have control that they do not actually have. For it is EC firmware that decides when the EC sends Linux temperature change events, and the EC may or may not decide to send Linux these events anywhere in the neighborhood of the fake override trip points. Beware. note also that thermal.nocrt is already available to disable crtical trip point actios, and thermal.crt=-1 is already available to disabled critical trip points entirely. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds1-0/+5
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (46 commits) UIO: Fix mapping of logical and virtual memory UIO: add automata sercos3 pci card support UIO: Change driver name of uio_pdrv UIO: Add alignment warnings for uio-mem Driver core: add bus_sort_breadthfirst() function NET: convert the phy_device file to use bus_find_device_by_name kobject: Cleanup kobject_rename and !CONFIG_SYSFS kobject: Fix kobject_rename and !CONFIG_SYSFS sysfs: Make dir and name args to sysfs_notify() const platform: add new device registration helper sysfs: use ilookup5() instead of ilookup5_nowait() PNP: create device attributes via default device attributes Driver core: make bus_find_device_by_name() more robust usb: turn dev_warn+WARN_ON combos into dev_WARN debug: use dev_WARN() rather than WARN_ON() in device_pm_add() debug: Introduce a dev_WARN() function sysfs: fix deadlock device model: Do a quickcheck for driver binding before doing an expensive check Driver core: Fix cleanup in device_create_vargs(). Driver core: Clarify device cleanup. ...
2008-10-16Merge branch 'for-linus' of ↵Linus Torvalds1-0/+1
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: (32 commits) Input: wm97xx - update email address for Liam Girdwood Input: i8042 - add Thinkpad R31 to nomux list Input: move map_to_7segment.h to include/linux Input: ads7846 - fix cache line sharing issue Input: cm109 - add missing newlines to messages Input: document i8042.debug in kernel-parameters.txt Input: keyboard - fix potential out of bound access to key_map Input: psmouse - add OLPC touchpad driver Input: psmouse - tweak PSMOUSE_DEFINE_ATTR to support raw set callbacks Input: psmouse - add psmouse_queue_work() for ps/2 extension to make use of Input: psmouse - export psmouse_set_state for ps/2 extensions to use Input: ads7846 - introduce .gpio_pendown to get pendown state Input: ALPS - add signature for DualPoint found in Dell Latitude E6500 Input: serio_raw - allow attaching to translated (SERIO_I8042XL) ports Input: cm109 - don't use obsolete logging macros Input: atkbd - expand Latitude's force release quirk to other Dells Input: bf54x-keys - add power management support Input: atmel_tsadcc - improve accuracy Input: convert drivers to use strict_strtoul() Input: appletouch - handle geyser 3/4 status bits ...
2008-10-16driver core: basic infrastructure for per-module dynamic debug messagesJason Baron1-0/+5
Base infrastructure to enable per-module debug messages. I've introduced CONFIG_DYNAMIC_PRINTK_DEBUG, which when enabled centralizes control of debugging statements on a per-module basis in one /proc file, currently, <debugfs>/dynamic_printk/modules. When, CONFIG_DYNAMIC_PRINTK_DEBUG, is not set, debugging statements can still be enabled as before, often by defining 'DEBUG' for the proper compilation unit. Thus, this patch set has no affect when CONFIG_DYNAMIC_PRINTK_DEBUG is not set. The infrastructure currently ties into all pr_debug() and dev_dbg() calls. That is, if CONFIG_DYNAMIC_PRINTK_DEBUG is set, all pr_debug() and dev_dbg() calls can be dynamically enabled/disabled on a per-module basis. Future plans include extending this functionality to subsystems, that define their own debug levels and flags. Usage: Dynamic debugging is controlled by the debugfs file, <debugfs>/dynamic_printk/modules. This file contains a list of the modules that can be enabled. The format of the file is as follows: <module_name> <enabled=0/1> . . . <module_name> : Name of the module in which the debug call resides <enabled=0/1> : whether the messages are enabled or not For example: snd_hda_intel enabled=0 fixup enabled=1 driver enabled=0 Enable a module: $echo "set enabled=1 <module_name>" > dynamic_printk/modules Disable a module: $echo "set enabled=0 <module_name>" > dynamic_printk/modules Enable all modules: $echo "set enabled=1 all" > dynamic_printk/modules Disable all modules: $echo "set enabled=0 all" > dynamic_printk/modules Finally, passing "dynamic_printk" at the command line enables debugging for all modules. This mode can be turned off via the above disable command. [gkh: minor cleanups and tweaks to make the build work quietly] Signed-off-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-10-15Merge branch 'next' into for-linusDmitry Torokhov1-0/+1
2008-10-12Merge branches 'x86/xen', 'x86/build', 'x86/microcode', 'x86/mm-debug-v2', ↵Ingo Molnar1-1/+25
'x86/memory-corruption-check', 'x86/early-printk', 'x86/xsave', 'x86/ptrace-v2', 'x86/quirks', 'x86/setup', 'x86/spinlocks' and 'x86/signal' into x86/core-v2
2008-10-12Merge branch 'linus' into x86/memory-corruption-checkIngo Molnar1-6/+21
2008-10-11Merge phase #4 (X2APIC, APIC unification, CPU identification unification) of ↵Linus Torvalds1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-v28-for-linus-phase4-D' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (186 commits) x86, debug: print more information about unknown CPUs x86 setup: handle more than 8 CPU flag words x86: cpuid, fix typo x86: move transmeta cap read to early_init_transmeta() x86: identify_cpu_without_cpuid v2 x86: extended "flags" to show virtualization HW feature in /proc/cpuinfo x86: move VMX MSRs to msr-index.h x86: centaur_64.c remove duplicated setting of CONSTANT_TSC x86: intel.c put workaround for old cpus together x86: let intel 64-bit use intel.c x86: make intel_64.c the same as intel.c x86: make intel.c have 64-bit support code x86: little clean up of intel.c/intel_64.c x86: make 64 bit to use amd.c x86: make amd_64 have 32 bit code x86: make amd.c have 64bit support code x86: merge header in amd_64.c x86: add srat_detect_node for amd64 x86: remove duplicated force_mwait x86: cpu make amd.c more like amd_64.c v2 ...
2008-10-11Merge branch 'x86/apic' into x86-v28-for-linus-phase4-BIngo Molnar1-0/+6
Conflicts: arch/x86/kernel/apic_32.c arch/x86/kernel/apic_64.c arch/x86/kernel/setup.c drivers/pci/intel-iommu.c include/asm-x86/cpufeature.h include/asm-x86/dma-mapping.h
2008-10-11Merge phase #3 (IOMMU) of ↵Linus Torvalds1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-v28-for-linus-phase3-B' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (74 commits) AMD IOMMU: use iommu_device_max_index, fix AMD IOMMU: use iommu_device_max_index x86: add PCI IDs for AMD Barcelona PCI devices x86/iommu: use __GFP_ZERO instead of memset for GART x86/iommu: convert GART need_flush to bool x86/iommu: make GART driver checkpatch clean x86 gart: remove unnecessary initialization x86: restore old GART alloc_coherent behavior revert "x86: make GART to respect device's dma_mask about virtual mappings" x86: export pci-nommu's alloc_coherent iommu: remove fullflush and nofullflush in IOMMU generic option x86: remove set_bit_string() iommu: export iommu_area_reserve helper function AMD IOMMU: use coherent_dma_mask in alloc_coherent add AMD IOMMU tree to MAINTAINERS file AMD IOMMU: use cmd_buf_size when freeing the command buffer AMD IOMMU: calculate IVHD size with a function AMD IOMMU: remove unnecessary cast to u64 in the init code AMD IOMMU: free domain bitmap with its allocation order AMD IOMMU: simplify dma_mask_to_pages ...
2008-10-11Documentation: Document the RB532 specific kmac tagFlorian Fainelli1-0/+4
The Routerboard 532 bootloader passes the korina ethernet MAC adapter address to the kernel on the command line. Document this in the kernel-parameters file. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-10PNP: add CONFIG_PNP_DEBUG_MESSAGES and pnp_dbg()Bjorn Helgaas1-0/+4
This adds the core function pnp_dbg() and a new config option to enable it. The PNP core debugging messages can be enabled at boot-time with the "pnp.debug" kernel parameter. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-10Merge branches 'core/iommu', 'x86/amd-iommu' and 'x86/iommu' into ↵Ingo Molnar1-0/+5
x86-v28-for-linus-phase3-B Conflicts: arch/x86/kernel/pci-gart_64.c include/asm-x86/dma-mapping.h
2008-10-08Input: document i8042.debug in kernel-parameters.txtJiri Kosina1-0/+1
i8042.debug parameter was missing in Documentation/kernel-parameters.txt. Add it. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-10-06Merge branches 'x86/alternatives', 'x86/cleanups', 'x86/commandline', ↵Ingo Molnar1-6/+6
'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/exports', 'x86/fpu', 'x86/gart', 'x86/idle', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/oprofile', 'x86/paravirt', 'x86/reboot', 'x86/sparse-fixes', 'x86/tsc', 'x86/urgent' and 'x86/vmalloc' into x86-v28-for-linus-phase1
2008-09-22iommu: remove fullflush and nofullflush in IOMMU generic optionFUJITA Tomonori1-4/+5
This patch against tip/x86/iommu virtually reverts 2842e5bf3115193f05dc9dac20f940e7abf44c1a. But just reverting the commit breaks AMD IOMMU so this patch also includes some fixes. The above commit adds new two options to x86 IOMMU generic kernel boot options, fullflush and nofullflush. But such change that affects all the IOMMUs needs more discussion (all IOMMU parties need the chance to discuss it): http://lkml.org/lkml/2008/9/19/106 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-22Merge commit 'v2.6.27-rc7' into x86/debugIngo Molnar1-11/+40
2008-09-21doc: Add remaining SH parameters to kernel-parameters.txt.Paul Mundt1-1/+11
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-19x86: move GART TLB flushing options to generic codeJoerg Roedel1-0/+4
The GART currently implements the iommu=[no]fullflush command line parameters which influence its IO/TLB flushing strategy. This patch makes these parameters generic so that they can be used by the AMD IOMMU too. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-07x86: clean up memory corruption check and add more kernel parametersJeremy Fitzhardinge1-5/+23
The corruption check is enabled in Kconfig by default, but disabled at runtime. This patch adds several kernel parameters to control the corruption check's behaviour; these are documented in kernel-parameters.txt. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-07x86: check for and defend against BIOS memory corruptionJeremy Fitzhardinge1-0/+5
Some BIOSes have been observed to corrupt memory in the low 64k. This change: - Reserves all memory which does not have to be in that area, to prevent it from being used as general memory by the kernel. Things like the SMP trampoline are still in the memory, however. - Clears the reserved memory so we can observe changes to it. - Adds a function check_for_bios_corruption() which checks and reports on memory becoming unexpectedly non-zero. Currently it's called in the x86 fault handler, and the powermanagement debug output. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-28x86: remove 8254 timer texts from DocumentationLuiz Fernando N. Capitulino1-6/+0
Commit ecd29476ae0143b1c3641edfa76c0fc3e9ad3021 removed the "disable_8254_timer" and "enable_8254_timer" kernel parameters from the kernel but did not remove the references to them from two files in the Documentation directory: kernel-parameters.txt and x86/x86_64/boot-options.txt. This change completes the removal. Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Acked-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22x86_64: printout msr -v2Yinghai Lu1-0/+6
commandline show_msr=1 for bsp, show_msr=32 for all 32 cpus. [ mingo@elte.hu: added documentation ] Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22libata: implement no[hs]rst force paramsTejun Heo1-0/+3
Implement force params nohrst, nosrst and norst. This is to work around reset related problems and ease debugging. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-08-20documentation: describe bootmem_debug kernel parameterAndreas Herrmann1-0/+2
"bootmem_debug" is not mentioned in kernel-parameters.txt. Recently I had to use that kernel option and I think it should be documented. Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Johannes Weiner <hannes@saeurebad.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-26Merge branch 'x86/x2apic' into x86/coreIngo Molnar1-0/+6
Conflicts: include/asm-x86/i8259.h include/asm-x86/msidef.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-26x86: usb debug port early console, v4Yinghai Lu1-1/+2
based on work from Eric, and add some timeout so don't dead loop when debug device is not installed v2: fix checkpatch warning v3: move ehci struct def to linux/usrb/ehci_def.h from host/ehci.h also add CONFIG_EARLY_PRINTK_DBGP to disable it by default v4: address comments from Ingo, seperate ehci reg def moving to another patch also add auto detect port that connect to debug device for Nvidia southbridge Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: "Arjan van de Ven" <arjan@infradead.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: "Greg KH" <greg@kroah.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-25remove some more tipar bitsAdrian Bunk1-7/+0
Some bits were missed when the tipar driver was removed. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25Merge branch 'linus' into x86/x2apicIngo Molnar1-4/+38
Conflicts: drivers/pci/dmar.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-24pm: acpi hibernation: utilize hardware signatureShaohua Li1-1/+3
ACPI defines a hardware signature. BIOS calculates the signature according to hardware configure and if hardware changes while hibernated, the signature will change. In that case, S4 resume should fail. Still, there may be systems on which this mechanism does not work correctly, so it is better to provide a workaround for them. For this reason, add a new switch to the acpi_sleep= command line argument allowing one to disable hardware signature checking. [shaohua.li@intel.com: build fix] Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Andi Kleen <andi@firstfloor.org> Cc: Len Brown <lenb@kernel.org> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: <Valdis.Kletnieks@vt.edu> Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24pm: boot time suspend selftestDavid Brownell1-1/+8
Boot-time test for system suspend states (STR or standby). The generic RTC framework triggers wakeup alarms, which are used to exit those states. - Measures some aspects of suspend time ... this uses "jiffies" until someone converts it to use a timebase that works properly even while timer IRQs are disabled. - Triggered by a command line parameter. By default nothing even vaguely troublesome will happen, but "test_suspend=mem" will give you a brief STR test during system boot. (Or you may need to use "test_suspend=standby" instead, if your hardware needs that.) This isn't without problems. It fires early enough during boot that for example both PCMCIA and MMC stacks have misbehaved. The workaround in those cases was to boot without such media cards inserted. [matthltc@us.ibm.com: fix compile failure in boot time suspend selftest] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Pavel Machek <pavel@suse.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24powerpc: support multiple hugepage sizesJon Tollefson1-5/+5
Instead of using the variable mmu_huge_psize to keep track of the huge page size we use an array of MMU_PAGE_* values. For each supported huge page size we need to know the hugepte_shift value and have a pgtable_cache. The hstate or an mmu_huge_psizes index is passed to functions so that they know which huge page size they should use. The hugepage sizes 16M and 64K are setup(if available on the hardware) so that they don't have to be set on the boot cmd line in order to use them. The number of 16G pages have to be specified at boot-time though (e.g. hugepagesz=16G hugepages=5). Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com> 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>
2008-07-24hugetlb: override default huge page sizeNick Piggin1-0/+7
Allow configurations with the default huge page size which is different to the traditional HPAGE_SIZE size. The default huge page size is the one represented in the legacy /proc ABIs, SHM, and which is defaulted to when mounting hugetlbfs filesystems. This is implemented with a new kernel option default_hugepagesz=, which defaults to HPAGE_SIZE if not specified. 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>
2008-07-24x86: add hugepagesz option on 64-bitAndi Kleen1-2/+9
Add an hugepagesz=... option similar to IA64, PPC etc. to x86-64. This finally allows to select GB pages for hugetlbfs in x86 now that all the infrastructure is in place. Signed-off-by: Andi Kleen <ak@suse.de> 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>
2008-07-24mm: add a basic debugging framework for memory initialisationMel Gorman1-0/+8
Boot initialisation is very complex, with significant numbers of architecture-specific routines, hooks and code ordering. While significant amounts of the initialisation is architecture-independent, it trusts the data received from the architecture layer. This is a mistake, and has resulted in a number of difficult-to-diagnose bugs. This patchset adds some validation and tracing to memory initialisation. It also introduces a few basic defensive measures. The validation code can be explicitly disabled for embedded systems. This patch: Add additional debugging and verification code for memory initialisation. Once enabled, the verification checks are always run and when required additional debugging information may be outputted via a mminit_loglevel= command-line parameter. The verification code is placed in a new file mm/mm_init.c. Ideally other mm initialisation code will be moved here over time. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-23Merge branch 'core/softlockup-for-linus' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core/softlockup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: softlockup: fix invalid proc_handler for softlockup_panic softlockup: fix watchdog task wakeup frequency softlockup: fix watchdog task wakeup frequency softlockup: show irqtrace softlockup: print a module list on being stuck softlockup: fix NMI hangs due to lock race - 2.6.26-rc regression softlockup: fix false positives on nohz if CPU is 100% idle for more than 60 seconds softlockup: fix softlockup_thresh fix softlockup: fix softlockup_thresh unaligned access and disable detection at runtime softlockup: allow panic on lockup
2008-07-22Merge branch 'linus' into x86/x2apicIngo Molnar1-1/+12
2008-07-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-0/+7
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: netfilter: nf_conntrack_sctp: fix sparse warnings netfilter: nf_nat_sip: c= is optional for session netfilter: xt_TCPMSS: collapse tcpmss_reverse_mtu{4,6} into one function netfilter: nfnetlink_log: send complete hardware header netfilter: xt_time: fix time's time_mt()'s use of do_div() netfilter: accounting rework: ct_extend + 64bit counters (v4) netlink: add NLA_PUT_BE64 macro netfilter: nf_nat_core: eliminate useless find_appropriate_src for IP_NAT_RANGE_PROTO_RANDOM hdlcdrv: Fix CRC calculation. Revert "pkt_sched: Make default qdisc nonshared-multiqueue safe." net: In __netif_schedule() use WARN_ON instead of BUG_ON net: Improve simple_tx_hash(). pkt_sched: Remove unused variable skb in dev_deactivate_queue function. sunhme: Remove stop/wake TX queue calls in set-multicast-list handler. ucc_geth: do not touch net queue in adjust_link phylib callback gianfar: do not touch net queue in adjust_link phylib callback atl1: Do not wake queue before queue has been started.
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