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2011-05-20x86, x2apic: Move the common bits to x2apic.hCyrill Gorcunov
To eliminate code duplication. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: steiner@sgi.com Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110519234637.591426753@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, x2apic: Minimize IPI register writes using cluster groupsCyrill Gorcunov
In the case of x2apic cluster mode we can group IPI register writes based on the cluster group instead of individual per-cpu destination messages. This reduces the apic register writes and reduces the amount of IPI messages (in the best case we can reduce it by a factor of 16). With this change, the cost of flush_tlb_others(), with the flush tlb IPI being sent from a cpu in the socket-1 to all the logical cpus in socket-2 (on a Westmere-EX system that has 20 logical cpus in a socket) is 3x times better now (compared to the former 'send one-by-one' algorithm). Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: steiner@sgi.com Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110519234637.512271057@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, x2apic: Track the x2apic cluster sibling mapCyrill Gorcunov
In the case of x2apic cluster mode, we can group IPI register writes based on the cluster group instead of individual per-cpu destination messages. For this purpose, track the cpu's that belong to the same x2apic cluster. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: steiner@sgi.com Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110519234637.421800999@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, x2apic: Remove duplicate code for IPI mask routinesSuresh Siddha
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110519234637.337024125@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, apic: Use probe routines to simplify apic selectionSuresh Siddha
Use the unused probe routine in the apic driver to finalize the apic model selection. This cleans up the default_setup_apic_routing() and this probe routine in future can also be used for doing any apic model specific initialisation. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110519234637.247458931@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Consolidate mp_ioapic_routing[] into 'struct ioapic'Suresh Siddha
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: daniel.blueman@gmail.com Link: http://lkml.kernel.org/r/20110518233158.089978277@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Consolidate gsi routing info into 'struct ioapic'Suresh Siddha
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: daniel.blueman@gmail.com Link: http://lkml.kernel.org/r/20110518233157.994002011@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Consolidate mp_ioapics[] into 'struct ioapic'Suresh Siddha
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: daniel.blueman@gmail.com Link: http://lkml.kernel.org/r/20110518233157.909013179@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Consolidate ioapic_saved_data[] into 'struct ioapic'Suresh Siddha
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: daniel.blueman@gmail.com Link: http://lkml.kernel.org/r/20110518233157.830697056@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Add struct ioapicSuresh Siddha
Introduce struct ioapic with nr_registers field. This will pave way for consolidating different MAX_IO_APICS arrays into it. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: daniel.blueman@gmail.com Link: http://lkml.kernel.org/r/20110518233157.744315519@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Remove duplicate code for saving/restoring RTEsSuresh Siddha
Code flow for enabling interrupt-remapping has its own routines for saving and restoring io-apic RTE's. ioapic suspend/resume code flow also has similar routines. Remove the duplicate code. Tested-by: Daniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Link: http://lkml.kernel.org/r/20110518233157.673130611@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Use ioapic_saved_data while enabling intr-remappingSuresh Siddha
Code flow for enabling interrupt-remapping was allocating/freeing buffers for saving/restoring io-apic RTE's. ioapic suspend/resume code uses boot time allocated ioapic_saved_data that is a perfect match for reuse here. This will remove the unnecessary allocation/free of the temporary buffers during suspend/resume of interrupt-remapping enabled platforms aswell as paving the way for further code consolidation. Tested-by: Daniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Link: http://lkml.kernel.org/r/20110518233157.574469296@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Allocate ioapic_saved_data earlySuresh Siddha
This allows re-using this buffer for enabling interrupt-remapping during boot and resume. And thus allow for consolidating the code between ioapic suspend/resume and interrupt-remapping. Tested-by: Daniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Link: http://lkml.kernel.org/r/20110518233157.481404505@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20x86, ioapic: Fix potential resume deadlockDaniel J Blueman
Fix a potential deadlock when resuming; here the calling function has disabled interrupts, so we cannot sleep. Change the memory allocation flag from GFP_KERNEL to GFP_ATOMIC. TODO: We can do away with this memory allocation during resume by reusing the ioapic suspend/resume code that uses boot time allocated buffers, but we want to keep this -stable patch simple. Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: <stable@kernel.org> # v2.6.38/39 Link: http://lkml.kernel.org/r/20110518233157.385970138@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-19Merge branch 'driver-core-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 * 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (44 commits) debugfs: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning sysfs: remove "last sysfs file:" line from the oops messages drivers/base/memory.c: fix warning due to "memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION" memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION SYSFS: Fix erroneous comments for sysfs_update_group(). driver core: remove the driver-model structures from the documentation driver core: Add the device driver-model structures to kerneldoc Translated Documentation/email-clients.txt RAW driver: Remove call to kobject_put(). reboot: disable usermodehelper to prevent fs access efivars: prevent oops on unload when efi is not enabled Allow setting of number of raw devices as a module parameter Introduce CONFIG_GOOGLE_FIRMWARE driver: Google Memory Console driver: Google EFI SMI x86: Better comments for get_bios_ebda() x86: get_bios_ebda_length() misc: fix ti-st build issues params.c: Use new strtobool function to process boolean inputs debugfs: move to new strtobool ... Fix up trivial conflicts in fs/debugfs/file.c due to the same patch being applied twice, and an unrelated cleanup nearby.
2011-05-19Merge branch 'x86-smep-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-smep-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, cpu: Enable/disable Supervisor Mode Execution Protection x86, cpu: Add SMEP CPU feature in CR4 x86, cpufeature: Add cpufeature flag for SMEP
2011-05-19Merge branches 'x86-reboot-for-linus' and 'x86-setup-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-reboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Reorder reboot method preferences * 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, setup: Fix EDD3.0 data verification.
2011-05-19Merge branch 'x86-platform-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Introduce pci_map_biosrom() x86, olpc: Use device tree for platform identification
2011-05-19Merge branch 'x86-mm-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits) x86, mm: Allow ZONE_DMA to be configurable x86, NUMA: Trim numa meminfo with max_pfn in a separate loop x86, NUMA: Rename setup_node_bootmem() to setup_node_data() x86, NUMA: Enable emulation on 32bit too x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too x86, NUMA: Rename amdtopology_64.c to amdtopology.c x86, NUMA: Make numa_init_array() static x86, NUMA: Make 32bit use common NUMA init path x86, NUMA: Initialize and use remap allocator from setup_node_bootmem() x86-32, NUMA: Add @start and @end to init_alloc_remap() x86, NUMA: Remove long 64bit assumption from numa.c x86, NUMA: Enable build of generic NUMA init code on 32bit x86, NUMA: Move NUMA init logic from numa_64.c to numa.c x86-32, NUMA: Update numaq to use new NUMA init protocol x86-32, NUMA: Replace srat_32.c with srat.c x86-32, NUMA: implement temporary NUMA init shims x86, NUMA: Move numa_nodes_parsed to numa.[hc] x86-32, NUMA: Move get_memcfg_numa() into numa_32.c x86, NUMA: make srat.c 32bit safe x86, NUMA: rename srat_64.c to srat.c ...
2011-05-19Merge branches 'x86-efi-for-linus', 'x86-gart-for-linus', ↵Linus Torvalds
'x86-irq-for-linus' and 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, efi: Ensure that the entirity of a region is mapped x86, efi: Pass a minimal map to SetVirtualAddressMap() x86, efi: Merge contiguous memory regions of the same type and attribute x86, efi: Consolidate EFI nx control x86, efi: Remove virtual-mode SetVirtualAddressMap call * 'x86-gart-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, gart: Don't enforce GART aperture lower-bound by alignment * 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Don't unmask disabled irqs when migrating them x86: Skip migrating IRQF_PER_CPU irqs in fixup_irqs() * 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, mce: Drop the default decoding notifier x86, MCE: Do not taint when handling correctable errors
2011-05-19Merge branch 'x86-cpu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, cpu: Fix detection of Celeron Covington stepping A1 and B0 Documentation, ABI: Update L3 cache index disable text x86, AMD, cacheinfo: Fix L3 cache index disable checks x86, AMD, cacheinfo: Fix fallout caused by max3 conversion x86, cpu: Change NOP selection for certain Intel CPUs x86, cpu: Clean up and unify the NOP selection infrastructure x86, percpu: Use ASM_NOP4 instead of hardcoding P6_NOP4 x86, cpu: Move AMD Elan Kconfig under "Processor family" Fix up trivial conflicts in alternative handling (commit dc326fca2b64 "x86, cpu: Clean up and unify the NOP selection infrastructure" removed some hacky 5-byte instruction stuff, while commit d430d3d7e646 "jump label: Introduce static_branch() interface" renamed HAVE_JUMP_LABEL to CONFIG_JUMP_LABEL in the code that went away)
2011-05-19Merge branches 'x86-apic-for-linus', 'x86-asm-for-linus' and ↵Linus Torvalds
'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, apic: Print verbose error interrupt reason on apic=debug * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Demacro CONFIG_PARAVIRT cpu accessors * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix mrst sparse complaints x86: Fix spelling error in the memcpy() source code comment x86, mpparse: Remove unnecessary variable
2011-05-19Merge branch 'timers-clockevents-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-clockevents-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: hpet: Cleanup the clockevents init and register code x86: Convert PIT to clockevents_config_and_register() clockevents: Provide interface to reconfigure an active clock event device clockevents: Provide combined configure and register function clockevents: Restructure clock_event_device members clocksource: Get rid of the hardcoded 5 seconds sleep time limit clocksource: Restructure clocksource struct members
2011-05-19Merge branch 'timers-clocksource-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: clocksource: convert mips to generic i8253 clocksource clocksource: convert x86 to generic i8253 clocksource clocksource: convert footbridge to generic i8253 clocksource clocksource: add common i8253 PIT clocksource blackfin: convert to clocksource_register_hz mips: convert to clocksource_register_hz/khz sparc: convert to clocksource_register_hz/khz alpha: convert to clocksource_register_hz microblaze: convert to clocksource_register_hz/khz ia64: convert to clocksource_register_hz/khz x86: Convert remaining x86 clocksources to clocksource_register_hz/khz Make clocksource name const
2011-05-19Merge branches 'sched-core-for-linus' and 'sched-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits) sched: Fix and optimise calculation of the weight-inverse sched: Avoid going ahead if ->cpus_allowed is not changed sched, rt: Update rq clock when unthrottling of an otherwise idle CPU sched: Remove unused parameters from sched_fork() and wake_up_new_task() sched: Shorten the construction of the span cpu mask of sched domain sched: Wrap the 'cfs_rq->nr_spread_over' field with CONFIG_SCHED_DEBUG sched: Remove unused 'this_best_prio arg' from balance_tasks() sched: Remove noop in alloc_rt_sched_group() sched: Get rid of lock_depth sched: Remove obsolete comment from scheduler_tick() sched: Fix sched_domain iterations vs. RCU sched: Next buddy hint on sleep and preempt path sched: Make set_*_buddy() work on non-task entities sched: Remove need_migrate_task() sched: Move the second half of ttwu() to the remote cpu sched: Restructure ttwu() some more sched: Rename ttwu_post_activation() to ttwu_do_wakeup() sched: Remove rq argument from ttwu_stat() sched: Remove rq->lock from the first half of ttwu() sched: Drop rq->lock from sched_exec() ... * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Fix rt_rq runtime leakage bug
2011-05-19Merge branch 'perf-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (107 commits) perf stat: Add more cache-miss percentage printouts perf stat: Add -d -d and -d -d -d options to show more CPU events ftrace/kbuild: Add recordmcount files to force full build ftrace: Add self-tests for multiple function trace users ftrace: Modify ftrace_set_filter/notrace to take ops ftrace: Allow dynamically allocated function tracers ftrace: Implement separate user function filtering ftrace: Free hash with call_rcu_sched() ftrace: Have global_ops store the functions that are to be traced ftrace: Add ops parameter to ftrace_startup/shutdown functions ftrace: Add enabled_functions file ftrace: Use counters to enable functions to trace ftrace: Separate hash allocation and assignment ftrace: Create a global_ops to hold the filter and notrace hashes ftrace: Use hash instead for FTRACE_FL_FILTER ftrace: Replace FTRACE_FL_NOTRACE flag with a hash of ignored functions perf bench, x86: Add alternatives-asm.h wrapper x86, 64-bit: Fix copy_[to/from]_user() checks for the userspace address limit x86, mem: memset_64.S: Optimize memset by enhanced REP MOVSB/STOSB x86, mem: memmove_64.S: Optimize memmove by enhanced REP MOVSB/STOSB ...
2011-05-19Merge branch 'core-iommu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, gart: Rename pci-gart_64.c to amd_gart_64.c x86/amd-iommu: Use threaded interupt handler arch/x86/kernel/pci-iommu_table.c: Convert sprintf_symbol to %pS x86/amd-iommu: Add support for invalidate_all command x86/amd-iommu: Add extended feature detection x86/amd-iommu: Add ATS enable/disable code x86/amd-iommu: Add flag to indicate IOTLB support x86/amd-iommu: Flush device IOTLB if ATS is enabled x86/amd-iommu: Select PCI_IOV with AMD IOMMU driver PCI: Move ATS declarations in seperate header file dma-debug: print information about leaked entry x86/amd-iommu: Flush all internal TLBs when IOMMUs are enabled x86/amd-iommu: Rename iommu_flush_device x86/amd-iommu: Improve handling of full command buffer x86/amd-iommu: Rename iommu_flush* to domain_flush* x86/amd-iommu: Remove command buffer resetting logic x86/amd-iommu: Cleanup completion-wait handling x86/amd-iommu: Cleanup inv_pages command handling x86/amd-iommu: Move inv-dte command building to own function x86/amd-iommu: Move compl-wait command building to own function
2011-05-19Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (34 commits) PM: Introduce generic prepare and complete callbacks for subsystems PM: Allow drivers to allocate memory from .prepare() callbacks safely PM: Remove CONFIG_PM_VERBOSE Revert "PM / Hibernate: Reduce autotuned default image size" PM / Hibernate: Add sysfs knob to control size of memory for drivers PM / Wakeup: Remove useless synchronize_rcu() call kmod: always provide usermodehelper_disable() PM / ACPI: Remove acpi_sleep=s4_nonvs PM / Wakeup: Fix build warning related to the "wakeup" sysfs file PM: Print a warning if firmware is requested when tasks are frozen PM / Runtime: Rework runtime PM handling during driver removal Freezer: Use SMP barriers PM / Suspend: Do not ignore error codes returned by suspend_enter() PM: Fix build issue in clock_ops.c for CONFIG_PM_RUNTIME unset PM: Revert "driver core: platform_bus: allow runtime override of dev_pm_ops" OMAP1 / PM: Use generic clock manipulation routines for runtime PM PM: Remove sysdev suspend, resume and shutdown operations PM / PowerPC: Use struct syscore_ops instead of sysdevs for PM PM / UNICORE32: Use struct syscore_ops instead of sysdevs for PM PM / AVR32: Use struct syscore_ops instead of sysdevs for PM ...
2011-05-19Merge branch 'move-drivers' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'move-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Move x86 drivers to drivers/cpufreq/
2011-05-19Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] remove redundant sprintf from request_module call. [CPUFREQ] cpufreq_stats.c: Fixed brace coding style issue [CPUFREQ] Fix memory leak in cpufreq_stat [CPUFREQ] cpufreq.h: Fix some checkpatch.pl coding style issues. [CPUFREQ] use dynamic debug instead of custom infrastructure [CPUFREQ] CPU hotplug, re-create sysfs directory and symlinks [CPUFREQ] Fix _OSC UUID in pcc-cpufreq
2011-05-19[CPUFREQ] Move x86 drivers to drivers/cpufreq/Dave Jones
Signed-off-by: Dave Jones <davej@redhat.com>
2011-05-19x86: Don't unmask disabled irqs when migrating themTian, Kevin
It doesn't make sense to unconditionally unmask a disabled irq when migrating it from offlined cpu to another. If the irq triggers then it will be disabled in the interrupt handler anyway. So we can just avoid unmasking it. [ tglx: Made masking unconditional again and fixed the changelog ] Signed-off-by: Fengzhe Zhang <fengzhe.zhang@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Jan Beulich <JBeulich@novell.com> Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com> Link: http://lkml.kernel.org/r/%3C625BA99ED14B2D499DC4E29D8138F1505C8ED7F7E3%40shsmsx502.ccr.corp.intel.com%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-05-19x86: Skip migrating IRQF_PER_CPU irqs in fixup_irqs()Tian, Kevin
IRQF_PER_CPU means that the irq cannot be moved away from a given cpu. So it must not be migrated when the cpu goes offline. [ tglx: massaged changelog ] Signed-off-by: Fengzhe Zhang <fengzhe.zhang@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Jan Beulich <JBeulich@novell.com> Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com> Link: http://lkml.kernel.org/r/%3C625BA99ED14B2D499DC4E29D8138F1505C8ED7F7E2%40shsmsx502.ccr.corp.intel.com%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-05-19x86: hpet: Cleanup the clockevents init and register codeThomas Gleixner
No need to recalculate the frequency and the conversion factors over and over. Calculate the frequency once and use the new config/register interface and let the core code do the math. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Reviewed-by: Ingo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/%3C20110518210136.646482357%40linutronix.de%3E
2011-05-19x86: Convert PIT to clockevents_config_and_register()Thomas Gleixner
Let the core do the work. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Reviewed-by: Ingo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/%3C20110518210136.545615675%40linutronix.de%3E
2011-05-18Merge branch 'x86/mem' into perf/coreIngo Molnar
Merge reason: memcpy_64.S changes an assumption perf bench has, so merge this here so we can fix it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-18Merge 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, AMD: Fix ARAT feature setting again Revert "x86, AMD: Fix APIC timer erratum 400 affecting K8 Rev.A-E processors" x86, apic: Fix spurious error interrupts triggering on all non-boot APs x86, mce, AMD: Fix leaving freed data in a list x86: Fix UV BAU for non-consecutive nasids x86, UV: Fix NMI handler for UV platforms
2011-05-18Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf evlist: Fix per thread mmap setup perf tools: Honour the cpu list parameter when also monitoring a thread list kprobes, x86: Disable irqs during optimized callback
2011-05-17x86, cpu: Enable/disable Supervisor Mode Execution ProtectionFenghua Yu
Enable/disable newly documented SMEP (Supervisor Mode Execution Protection) CPU feature in kernel. CR4.SMEP (bit 20) is 0 at power-on. If the feature is supported by CPU (X86_FEATURE_SMEP), enable SMEP by setting CR4.SMEP. New kernel option nosmep disables the feature even if the feature is supported by CPU. [ hpa: moved the call to setup_smep() until after the vendor-specific initialization; that ensures that CPUID features are unmasked. We will still run it before we have userspace (never mind uncontrolled userspace). ] Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> LKML-Reference: <1305157865-31727-1-git-send-email-fenghua.yu@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-05-17x86, alternative, doc: Add comment for applying alternatives orderFenghua Yu
Some string operation functions may be patched twice, e.g. on enhanced REP MOVSB /STOSB processors, memcpy is patched first by fast string alternative function, then it is patched by enhanced REP MOVSB/STOSB alternative function. Add comment for applying alternatives order to warn people who may change the applying alternatives order for any reason. [ Documentation-only patch ] Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/1305671358-14478-4-git-send-email-fenghua.yu@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-05-17x86, mem, intel: Initialize Enhanced REP MOVSB/STOSBFenghua Yu
If kernel intends to use enhanced REP MOVSB/STOSB, it must ensure IA32_MISC_ENABLE.Fast_String_Enable (bit 0) is set and CPUID.(EAX=07H, ECX=0H): EBX[bit 9] also reports 1. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/1305671358-14478-3-git-send-email-fenghua.yu@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-05-17Merge branch 'syscore' into for-linusRafael J. Wysocki
* syscore: PM: Remove sysdev suspend, resume and shutdown operations PM / PowerPC: Use struct syscore_ops instead of sysdevs for PM PM / UNICORE32: Use struct syscore_ops instead of sysdevs for PM PM / AVR32: Use struct syscore_ops instead of sysdevs for PM PM / Blackfin: Use struct syscore_ops instead of sysdevs for PM ARM / Samsung: Use struct syscore_ops for "core" power management ARM / PXA: Use struct syscore_ops for "core" power management ARM / SA1100: Use struct syscore_ops for "core" power management ARM / Integrator: Use struct syscore_ops for core PM ARM / OMAP: Use struct syscore_ops for "core" power management ARM: Use struct syscore_ops instead of sysdevs for PM in common code
2011-05-17PM / ACPI: Remove acpi_sleep=s4_nonvsAmerigo Wang
acpi_sleep=s4_nonvs is superseded by acpi_sleep=nonvs, so remove it. Signed-off-by: WANG Cong <amwang@redhat.com> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-05-17x86, cpufeature: Fix cpuid leaf 7 feature detectionFenghua Yu
CPUID leaf 7, subleaf 0 returns the maximum subleaf in EAX, not the number of subleaves. Since so far only subleaf 0 is defined (and only the EBX bitfield) we do not need to qualify the test. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/1305660806-17519-1-git-send-email-fenghua.yu@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: <stable@kernel.org> 2.6.36..39
2011-05-17x86, AMD: Fix ARAT feature setting againBorislav Petkov
Trying to enable the local APIC timer on early K8 revisions uncovers a number of other issues with it, in conjunction with the C1E enter path on AMD. Fixing those causes much more churn and troubles than the benefit of using that timer brings so don't enable it on K8 at all, falling back to the original functionality the kernel had wrt to that. Reported-and-bisected-by: Nick Bowler <nbowler@elliptictech.com> Cc: Boris Ostrovsky <Boris.Ostrovsky@amd.com> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Greg Kroah-Hartman <greg@kroah.com> Cc: Hans Rosenfeld <hans.rosenfeld@amd.com> Cc: Nick Bowler <nbowler@elliptictech.com> Cc: Joerg-Volker-Peetz <jvpeetz@web.de> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/1305636919-31165-3-git-send-email-bp@amd64.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-17Revert "x86, AMD: Fix APIC timer erratum 400 affecting K8 Rev.A-E processors"Borislav Petkov
This reverts commit e20a2d205c05cef6b5783df339a7d54adeb50962, as it crashes certain boxes with specific AMD CPU models. Moving the lower endpoint of the Erratum 400 check to accomodate earlier K8 revisions (A-E) opens a can of worms which is simply not worth to fix properly by tweaking the errata checking framework: * missing IntPenging MSR on revisions < CG cause #GP: http://marc.info/?l=linux-kernel&m=130541471818831 * makes earlier revisions use the LAPIC timer instead of the C1E idle routine which switches to HPET, thus not waking up in deeper C-states: http://lkml.org/lkml/2011/4/24/20 Therefore, leave the original boundary starting with K8-revF. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-17Merge branch 'gart/rename' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into core/iommu
2011-05-16x86, cpu: Fix detection of Celeron Covington stepping A1 and B0Ondrej Zary
Steppings A1 and B0 of Celeron Covington are currently misdetected as Pentium II (Dixon). Fix it by removing the stepping check. [ hpa: this fixes this specific bug... the CPUID documentation specifies that the L2 cache size can disambiguate additional CPUs; this patch does not fix that. ] Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Link: http://lkml.kernel.org/r/201105162138.15416.linux@rainbow-software.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-05-16x86, AMD, cacheinfo: Fix L3 cache index disable checksFrank Arnold
We provide two slots to disable cache indices, and have a check to prevent both slots to be used for the same index. If the user disables the same index on different subcaches, both slots will hold the same index, e.g. $ echo 2047 > /sys/devices/system/cpu/cpu0/cache/index3/cache_disable_0 $ cat /sys/devices/system/cpu/cpu0/cache/index3/cache_disable_0 2047 $ echo 1050623 > /sys/devices/system/cpu/cpu0/cache/index3/cache_disable_1 $ cat /sys/devices/system/cpu/cpu0/cache/index3/cache_disable_1 2047 due to the fact that the check was looking only at index bits [11:0] and was ignoring writes to bits outside that range. The more correct fix is to simply check whether the index is within the bounds of [0..l3->indices]. While at it, cleanup comments and drop now-unused local macros. Signed-off-by: Frank Arnold <frank.arnold@amd.com> Link: http://lkml.kernel.org/r/1305553188-21061-3-git-send-email-bp@amd64.org Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-05-16x86, AMD, cacheinfo: Fix fallout caused by max3 conversionBorislav Petkov
732eacc0542d0aa48797f675888b85d6065af837 converted code around the kernel using nested max() macros to use the new max3 macro but forgot to remove the old line in intel_cacheinfo.c. Fix it. Cc: Hagen Paul Pfeifer <hagen@jauu.net> Cc: Frank Arnold <farnold@amd64.org> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/1305553188-21061-2-git-send-email-bp@amd64.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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