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2009-02-06MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatc ↵merge
hes-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 / 1c405b6ccee468298e7ccbfd9a3a3f4d123207b0 ... parent commitmessage: From: merge <null@invalid> MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 stable-tracking-hist top was MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 / 71be0a45396066b1f8f27f8f4f87937247a129e1 ... parent commitmessage: From: merge <null@invalid> MERGE-via-mokopatches-tracking-hist-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 mokopatches-tracking-hist top was MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 / 1be1b01373f572a02c6f1f99863c8c11ed2f9f5b ... parent commitmessage: From: merge <null@invalid> MERGE-via-master-MERGE-via-master-hist-1232625318 master top was MERGE-via-master-hist-1232625318 / dd4b117123ae66451695810017eb72fbdfc05df5 ... parent commitmessage: From: merge <null@invalid> MERGE-master-patchset-edits
2009-01-22MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatc ↵merge
hes-tracking-fix-stray-endmenu-patch-1232632040-1232632141 pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage: From: merge <null@invalid> MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage: From: merge <null@invalid> MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage: From: Andy Green <andy@openmoko.com> fix-stray-endmenu.patch Signed-off-by: Andy Green <andy@openmoko.com>
2008-11-08sched: improve sched_clock() performanceIngo Molnar
in scheduler-intense workloads native_read_tsc() overhead accounts for 20% of the system overhead: 659567 system_call 41222.9375 686796 schedule 435.7843 718382 __switch_to 665.1685 823875 switch_mm 4526.7857 1883122 native_read_tsc 55385.9412 9761990 total 2.8468 this is large part due to the rdtsc_barrier() that is done before and after reading the TSC. But sched_clock() is not a precise clock in the GTOD sense, using such barriers is completely pointless. So remove the barriers and only use them in vget_cycles(). This improves lat_ctx performance by about 5%. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-06Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: Revert "x86: default to reboot via ACPI" x86: align DirectMap in /proc/meminfo AMD IOMMU: fix lazy IO/TLB flushing in unmap path x86: add smp_mb() before sending INVALIDATE_TLB_VECTOR x86: remove VISWS and PARAVIRT around NR_IRQS puzzle x86: mention ACPI in top-level Kconfig menu x86: size NR_IRQS on 32-bit systems the same way as 64-bit x86: don't allow nr_irqs > NR_IRQS x86/docs: remove noirqbalance param docs x86: don't use tsc_khz to calculate lpj if notsc is passed x86, voyager: fix smp_intr_init() compile breakage AMD IOMMU: fix detection of NP capable IOMMUs
2008-11-06x86: remove VISWS and PARAVIRT around NR_IRQS puzzleYinghai Lu
Impact: fix warning message when PARAVIRT is set in config Remove stale #ifdef components from our IRQ sizing logic. x86/Voyager is the only holdout. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-06x86: size NR_IRQS on 32-bit systems the same way as 64-bitYinghai Lu
Impact: make NR_IRQS big enough for system with lots of apic/pins If lots of IO_APIC's are there (or can be there), size the same way as 64-bit, depending on MAX_IO_APICS and NR_CPUS. This fixes the boot problem reported by Ben Hutchings on a 32-bit server with 5 IO-APICs and 240 IO-APIC pins. Signed-off-by: Yinghai <yinghai@kernel.org> Tested-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-05sched: re-tune balancingIngo Molnar
Impact: improve wakeup affinity on NUMA systems, tweak SMP systems Given the fixes+tweaks to the wakeup-buddy code, re-tweak the domain balancing defaults on NUMA and SMP systems. Turn on SD_WAKE_AFFINE which was off on x86 NUMA - there's no reason why we would not want to have wakeup affinity across nodes as well. (we already do this in the standard NUMA template.) lat_ctx on a NUMA box is particularly happy about this change: before: | phoenix:~/l> ./lat_ctx -s 0 2 | "size=0k ovr=2.60 | 2 5.70 after: | phoenix:~/l> ./lat_ctx -s 0 2 | "size=0k ovr=2.65 | 2 2.07 a 2.75x speedup. pipe-test is similarly happy about it too: | phoenix:~/sched-tests> ./pipe-test | 18.26 usecs/loop. | 14.70 usecs/loop. | 14.38 usecs/loop. | 10.55 usecs/loop. # +WAKE_AFFINE on domain0+domain1 | 8.63 usecs/loop. | 8.59 usecs/loop. | 9.03 usecs/loop. | 8.94 usecs/loop. | 8.96 usecs/loop. | 8.63 usecs/loop. Also: - disable SD_BALANCE_NEWIDLE on NUMA and SMP domains (keep it for siblings) - enable SD_WAKE_BALANCE on SMP domains Sysbench+postgresql improves all around the board, quite significantly: .28-rc3-11474e2c .28-rc3-11474e2c-tune ------------------------------------------------- 1: 571 688 +17.08% 2: 1236 1206 -2.55% 4: 2381 2642 +9.89% 8: 4958 5164 +3.99% 16: 9580 9574 -0.07% 32: 7128 8118 +12.20% 64: 7342 8266 +11.18% 128: 7342 8064 +8.95% 256: 7519 7884 +4.62% 512: 7350 7731 +4.93% ------------------------------------------------- SUM: 55412 59341 +6.62% So it's a win both for the runup portion, the peak area and the tail. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-03Merge branch 'io-mappings-for-linus-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'io-mappings-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: io mapping: clean up #ifdefs io mapping: improve documentation i915: use io-mapping interfaces instead of a variety of mapping kludges resources: add io-mapping functions to dynamically map large device apertures x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmaps
2008-11-03x86, voyager: fix smp_intr_init() compile breakageJames Bottomley
Impact: fix x86/Voyager build Looks like this became static on the rest of x86. Fix it up by adding an external definition to mach-voyager/setup.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-31x86: fix AMDC1E and XTOPOLOGY conflict in cpufeatureVenki Pallipadi
Impact: fix xsave slowdown regression Fix two features from conflicting in feature bits. Fixes this performance regression: Subject: cpu2000(both float and int) 13% regression with 2.6.28-rc1 http://lkml.org/lkml/2008/10/28/36 Reported-by: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> Bisected-by: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-31x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmapsKeith Packard
Impact: introduce new APIs, separate kmap code from CONFIG_HIGHMEM This takes the code used for CONFIG_HIGHMEM memory mappings except that it's designed for dynamic IO resource mapping. These fixmaps are available even with CONFIG_HIGHMEM turned off. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-30Merge branch 'x86-fixes-for-linus-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: cpu_index build fix x86/voyager: fix missing cpu_index initialisation x86/voyager: fix compile breakage caused by dc1e35c6e95e8923cf1d3510438b63c600fee1e2 x86: fix /dev/mem mmap breakage when PAT is disabled x86/voyager: fix compile breakage casued by x86: move prefill_possible_map calling early x86: use CONFIG_X86_SMP instead of CONFIG_SMP x86/voyager: fix boot breakage caused by x86: boot secondary cpus through initial_code x86, uv: fix compile error in uv_hub.h i386/PAE: fix pud_page() x86: remove debug code from arch_add_memory() x86: start annotating early ioremap pointers with __iomem x86: two trivial sparse annotations x86: fix init_memory_mapping for [dc000000 - e0000000) - v2
2008-10-31x86/voyager: fix compile breakage caused by ↵James Bottomley
dc1e35c6e95e8923cf1d3510438b63c600fee1e2 Impact: build fix on x86/Voyager Given commits like this: | Author: Suresh Siddha <suresh.b.siddha@intel.com> | Date: Tue Jul 29 10:29:19 2008 -0700 | | x86, xsave: enable xsave/xrstor on cpus with xsave support Which deliberately expose boot cpu dependence to pieces of the system, I think it's time to explicitly have a variable for it to prevent this continual misassumption that the boot CPU is zero. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-30Merge 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, gart: fix gart detection for Fam11h CPUs x86: 64 bit print out absent pages num too x86, kdump: fix invalid access on i386 sparsemem x86: fix APIC_DEBUG with inquire_remote_apic x86: AMD microcode patch loader author update x86: microcode patch loader author update mailmap: add Peter Oruba x86, bts: improve help text for BTS config doc/x86: fix doc subdirs
2008-10-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: x86/PCI: build failure at x86/kernel/pci-dma.c with !CONFIG_PCI
2008-10-30x86, uv: fix compile error in uv_hub.hMike Travis
Impact: include file dependency cleanup Fix compile errors of files that include asm/uv/uv_hub.h but do not include linux/timer.h. [ such files are not mainline right now. ] Signed-of-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-30i386/PAE: fix pud_page()Jan Beulich
Impact: cleanup To the unsuspecting user it is quite annoying that this broken and inconsistent with x86-64 definition still exists. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-29x86: start annotating early ioremap pointers with __iomemHarvey Harrison
Impact: some new sparse warnings in e820.c etc, but no functional change. As with regular ioremap, iounmap etc, annotate with __iomem. Fixes the following sparse warnings, will produce some new ones elsewhere in arch/x86 that will get worked out over time. arch/x86/mm/ioremap.c:402:9: warning: cast removes address space of expression arch/x86/mm/ioremap.c:406:10: warning: cast adds address space to expression (<asn:2>) arch/x86/mm/ioremap.c:782:19: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28Merge 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: (31 commits) ftrace: fix current_tracer error return tracing: fix a build error on alpha ftrace: use a real variable for ftrace_nop in x86 tracing/ftrace: make boot tracer select the sched_switch tracer tracepoint: check if the probe has been registered asm-generic: define DIE_OOPS in asm-generic trace: fix printk warning for u64 ftrace: warning in kernel/trace/ftrace.c ftrace: fix build failure ftrace, powerpc, sparc64, x86: remove notrace from arch ftrace file ftrace: remove ftrace hash ftrace: remove mcount set ftrace: remove daemon ftrace: disable dynamic ftrace for all archs that use daemon ftrace: add ftrace warn on to disable ftrace ftrace: only have ftrace_kill atomic ftrace: use probe_kernel ftrace: comment arch ftrace code ftrace: return error on failed modified text. ftrace: dynamic ftrace process only text section ...
2008-10-28Merge branch 'kvm-updates/2.6.28' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: ia64: Makefile fix for forcing to re-generate asm-offsets.h KVM: Future-proof device assignment ABI KVM: ia64: Fix halt emulation logic KVM: Fix guest shared interrupt with in-kernel irqchip KVM: MMU: sync root on paravirt TLB flush
2008-10-28Merge 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: fix irqs on/off ip tracing lockdep: minor fix for debug_show_all_locks() x86: restore the old swiotlb alloc_coherent behavior x86: use GFP_DMA for 24bit coherent_dma_mask swiotlb: remove panic for alloc_coherent failure xen: compilation fix of drivers/xen/events.c on IA64 xen: portability clean up and some minor clean up for xencomm.c xen: don't reload cr3 on suspend kernel/resource: fix reserve_region_with_split() section mismatch printk: remove unused code from kernel/printk.c
2008-10-28x86: fix APIC_DEBUG with inquire_remote_apicYinghai Lu
APIC_DEBUG is always 2. need to update inquire_remote_apic to check apic_verbosity with it instead. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28KVM: Fix guest shared interrupt with in-kernel irqchipSheng Yang
Every call of kvm_set_irq() should offer an irq_source_id, which is allocated by kvm_request_irq_source_id(). Based on irq_source_id, we identify the irq source and implement logical OR for shared level interrupts. The allocated irq_source_id can be freed by kvm_free_irq_source_id(). Currently, we support at most sizeof(unsigned long) different irq sources. [Amit: - rebase to kvm.git HEAD - move definition of KVM_USERSPACE_IRQ_SOURCE_ID to common file - move kvm_request_irq_source_id to the update_irq ioctl] [Xiantao: - Add kvm/ia64 stuff and make it work for kvm/ia64 guests] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-27Merge commit 'v2.6.28-rc2' into tracing/urgentIngo Molnar
2008-10-24x86/PCI: build failure at x86/kernel/pci-dma.c with !CONFIG_PCIFenghua Yu
On Thu, Oct 23, 2008 at 04:09:52PM -0700, Alexander Beregalov wrote: > arch/x86/kernel/built-in.o: In function `iommu_setup': > pci-dma.c:(.init.text+0x36ad): undefined reference to `forbid_dac' > pci-dma.c:(.init.text+0x36cc): undefined reference to `forbid_dac' > pci-dma.c:(.init.text+0x3711): undefined reference to `forbid_dac This patch partially reverts a patch to add IOMMU support to ia64. The forbid_dac variable was incorrectly moved to quirks.c, which isn't built when PCI is disabled. Tested-by: "Alexander Beregalov" <a.beregalov@gmail.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-23x86: use GFP_DMA for 24bit coherent_dma_maskFUJITA Tomonori
dma_alloc_coherent (include/asm-x86/dma-mapping.h) avoids GFP_DMA allocation first and if the allocated address is not fit for the device's coherent_dma_mask, then dma_alloc_coherent does GFP_DMA allocation. This is because dma_alloc_coherent avoids precious GFP_DMA zone if possible. This is also how the old dma_alloc_coherent (arch/x86/kernel/pci-dma.c) works. However, if the coherent_dma_mask of a device is 24bit, there is no point to go into the above GFP_DMA retry mechanism. We had better use GFP_DMA in the first place. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-23Merge 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: fix section mismatch warning - apic_x2apic_phys x86: fix section mismatch warning - apic_x2apic_cluster x86: fix section mismatch warning - apic_x2apic_uv_x x86: fix section mismatch warning - apic_physflat x86: fix section mismatch warning - apic_flat x86: memtest fix use of reserve_early() x86 syscall.h: fix argument order x86/tlb_uv: remove strange mc146818rtc include x86: remove redundant KERN_DEBUG on pr_debug x86: do_boot_cpu - check if we have ESR register x86: MAINTAINERS change for AMD microcode patch loader x86/proc: fix /proc/cpuinfo cpu offline bug x86: call dmi-quirks for HP Laptops after early-quirks are executed x86, kexec: fix hang on i386 when panic occurs while console_sem is held MCE: Don't run 32bit machine checks with interrupts on x86: SB600: skip IRQ0 override if it is not routed to INT2 of IOAPIC x86: make variables static
2008-10-23Merge branch 'proc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc * 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: (35 commits) proc: remove fs/proc/proc_misc.c proc: move /proc/vmcore creation to fs/proc/vmcore.c proc: move pagecount stuff to fs/proc/page.c proc: move all /proc/kcore stuff to fs/proc/kcore.c proc: move /proc/schedstat boilerplate to kernel/sched_stats.h proc: move /proc/modules boilerplate to kernel/module.c proc: move /proc/diskstats boilerplate to block/genhd.c proc: move /proc/zoneinfo boilerplate to mm/vmstat.c proc: move /proc/vmstat boilerplate to mm/vmstat.c proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c proc: move /proc/buddyinfo boilerplate to mm/vmstat.c proc: move /proc/vmallocinfo to mm/vmalloc.c proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c proc: move /proc/slab_allocators boilerplate to mm/slab.c proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c proc: move /proc/stat to fs/proc/stat.c proc: move rest of /proc/partitions code to block/genhd.c proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c proc: move /proc/devices code to fs/proc/devices.c proc: move rest of /proc/locks to fs/locks.c ...
2008-10-23Merge branch 'x86/um-header' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86/um-header' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits) x86: canonicalize remaining header guards x86: drop double underscores from header guards x86: Fix ASM_X86__ header guards x86, um: get rid of uml-config.h x86, um: get rid of arch/um/Kconfig.arch x86, um: get rid of arch/um/os symlink x86, um: get rid of excessive includes of uml-config.h x86, um: get rid of header symlinks x86, um: merge Kconfig.i386 and Kconfig.x86_64 x86, um: get rid of sysdep symlink x86, um: trim the junk from uml ptrace-*.h x86, um: take vm-flags.h to sysdep x86, um: get rid of uml asm/arch x86, um: get rid of uml highmem.h x86, um: get rid of uml unistd.h x86, um: get rid of system.h -> system.h include x86, um: uml atomic.h is not needed anymore x86, um: untangle uml ldt.h x86, um: get rid of more uml asm/arch uses x86, um: remove dead header (uml module-generic.h; never used these days) ...
2008-10-23x86: canonicalize remaining header guardsH. Peter Anvin
Canonicalize a few remaining header guards, with the exception for those which are still in subarchitecture directories. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-23x86: drop double underscores from header guardsH. Peter Anvin
Drop double underscores from header guards in arch/x86/include. They are used inconsistently, and are not necessary. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-22x86: Fix ASM_X86__ header guardsH. Peter Anvin
Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-22x86, um: ... and asm-x86 moveAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>