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* KVM: ia64: fix build failures due to ia64/unsigned long mismatchesAvi Kivity2009-08-053-11/+14
| | | | Signed-off-by: Avi Kivity <avi@redhat.com>
* mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()Benjamin Herrenschmidt2009-07-272-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() Upcoming paches to support the new 64-bit "BookE" powerpc architecture will need to have the virtual address corresponding to PTE page when freeing it, due to the way the HW table walker works. Basically, the TLB can be loaded with "large" pages that cover the whole virtual space (well, sort-of, half of it actually) represented by a PTE page, and which contain an "indirect" bit indicating that this TLB entry RPN points to an array of PTEs from which the TLB can then create direct entries. Thus, in order to invalidate those when PTE pages are deleted, we need the virtual address to pass to tlbilx or tlbivax instructions. The old trick of sticking it somewhere in the PTE page struct page sucks too much, the address is almost readily available in all call sites and almost everybody implemets these as macros, so we may as well add the argument everywhere. I added it to the pmd and pud variants for consistency. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV] Acked-by: Nick Piggin <npiggin@suse.de> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Revert "Neither asm/types.h nor linux/types.h is required for ↵Aurelien Jarno2009-07-171-0/+2
| | | | | | | | | | | | arch/ia64/include/asm/fpu.h" asm/fpu.h uses the __IA64_UL macro which is declared in asm/types.h, so this include is really required. Without it, GNU libc fails to build. This reverts commit 2678c07b07ac2076675e5d57653bdf02e9af1950. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Acked-by: Fenghua Yu <fenghua.yu@intel.com>
* Add dma_debug_init() for ia64fujita2009-07-171-0/+8
| | | | | | | | | The commit 9916219579d078c80377dd3988c2cc213536d868 was supposed to add CONFIG_DMA_API_DEBUG support to IA64 however I forgot to add dma_debug_init(). Signed-off-by: fujita <fujita@tulip.osrg.net> Acked-by: Fenghua Yu <fenghua.yu@intel.com>
* Fix ia64 compilation IS_ERR and PTE_ERR errors.Fenghua Yu2009-07-171-0/+1
| | | | | | | | | | | | | | When building ia64 kernel with CONFIG_XEN_SYS_HYPERVISOR, compiler reports errors: drivers/xen/sys-hypervisor.c: In function ‘uuid_show’: drivers/xen/sys-hypervisor.c:125: error: implicit declaration of function ‘IS_ERR’ drivers/xen/sys-hypervisor.c:126: error: implicit declaration of function ‘PTR_ERR’ This patch fixes the errors. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
* headers: smp_lock.h reduxAlexey Dobriyan2009-07-121-1/+0
| | | | | | | | | | | | | * Remove smp_lock.h from files which don't need it (including some headers!) * Add smp_lock.h to files which do need it * Make smp_lock.h include conditional in hardirq.h It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT This will make hardirq.h inclusion cheaper for every PREEMPT=n config (which includes allmodconfig/allyesconfig, BTW) Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sched: INIT_PREEMPT_COUNTPeter Zijlstra2009-07-101-1/+1
| | | | | | | | | | | | | | | | | | | | | Pull the initial preempt_count value into a single definition site. Maintainers for: alpha, ia64 and m68k, please have a look, your arch code is funny. The header magic is a bit odd, but similar to the KERNEL_DS one, CPP waits with expanding these macros until the INIT_THREAD_INFO macro itself is expanded, which is in arch/*/kernel/init_task.c where we've already included sched.h so we're good. Cc: tony.luck@intel.com Cc: rth@twiddle.net Cc: geert@linux-m68k.org Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-07-061-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: PCI: Fix IRQ swizzling for ARI-enabled devices ia64/PCI: adjust section annotation for pcibios_setup() x86/PCI: get root CRS before scanning children x86/PCI: fix boundary checking when using root CRS PCI MSI: Fix restoration of MSI/MSI-X mask states in suspend/resume PCI MSI: Unmask MSI if setup failed PCI MSI: shorten PCI_MSIX_ENTRY_* symbol names PCI: make pci_name() take const argument PCI: More PATA quirks for not entering D3 PCI: fix kernel-doc warnings PCI: check if bus has a proper bridge device before triggering SBR PCI: remove pci_dac_dma_... APIs on mn10300 PCI ECRC: Remove unnecessary semicolons PCI MSI: Return if alloc_msi_entry for MSI-X failed
| * ia64/PCI: adjust section annotation for pcibios_setup()Ingo Molnar2009-06-301-1/+1
| | | | | | | | | | | | | | Should be __init. Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | [IA64] address compiler warnings perfmon.c/salinfo.cJan Beulich2009-06-302-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perfmon.c has a dubious cast directly from "int" to "void *". Add an intermediate cast to "long" to keep gcc happy. salinfo.c uses "down_trylock()" in a highly creative way (explained in the comments in the file) ... but it does kick out this warning: arch/ia64/kernel/salinfo.c:195: warning: ignoring return value of 'down_trylock' which people occasionally try to "fix" in ways that do not work. Use some casts to keep gcc quiet. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] Remove unnecessary semicolonsJoe Perches2009-06-304-7/+7
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] sprintf should not be used with same source & destination addressAlan Cox2009-06-301-1/+2
|/ | | | | | | | | | This happens to work at the moment but isn't a good idea so fix it the simple way. Resolves-bug: http://bugzilla.kernel.org/show_bug.cgi?id=13576 Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* KVM: ia64: fix ia64 build due to missing kallsyms_lookup() and double exportJes Sorensen2009-06-281-0/+6
| | | | | | | | | | | | Fix problem with double export of certain symbols from vsprintf.c which we do not wish to export from the kvm-intel.ko module. In addition, we do not have access to kallsyms_lookup() from the module, so make sure to #undef CONFIG_KALLSYMS Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
*-. Merge branches 'acerhdf', 'acpi-pci-bind', 'bjorn-pci-root', ↵Len Brown2009-06-241-0/+12
|\ \ | | | | | | | | | 'bugzilla-12904', 'bugzilla-13121', 'bugzilla-13396', 'bugzilla-13533', 'bugzilla-13612', 'c3_lock', 'hid-cleanups', 'misc-2.6.31', 'pdc-leak-fix', 'pnpacpi', 'power_nocheck', 'thinkpad_acpi', 'video' and 'wmi' into release
| | * ACPI: pdc init related memory leak with physical CPU hotplugPallipadi, Venkatesh2009-06-201-0/+12
| |/ | | | | | | | | | | | | | | | | | | | | arch_acpi_processor_cleanup_pdc() in x86 and ia64 results in memory allocated for _PDC objects that is never freed and will cause memory leak in case of physical CPU remove and add. Patch fixes the memory leak by freeing the objects soon after _PDC is evaluated. Reported-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | Merge git://git.infradead.org/~dwmw2/iommu-2.6.31Linus Torvalds2009-06-223-1/+8
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/~dwmw2/iommu-2.6.31: intel-iommu: Fix one last ia64 build problem in Pass Through Support VT-d: support the device IOTLB VT-d: cleanup iommu_flush_iotlb_psi and flush_unmaps VT-d: add device IOTLB invalidation support VT-d: parse ATSR in DMA Remapping Reporting Structure PCI: handle Virtual Function ATS enabling PCI: support the ATS capability intel-iommu: dmar_set_interrupt return error value intel-iommu: Tidy up iommu->gcmd handling intel-iommu: Fix tiny theoretical race in write-buffer flush. intel-iommu: Clean up handling of "caching mode" vs. IOTLB flushing. intel-iommu: Clean up handling of "caching mode" vs. context flushing. VT-d: fix invalid domain id for KVM context flush Fix !CONFIG_DMAR build failure introduced by Intel IOMMU Pass Through Support Intel IOMMU Pass Through Support Fix up trivial conflicts in drivers/pci/{intel-iommu.c,intr_remapping.c}
| * | intel-iommu: Fix one last ia64 build problem in Pass Through SupportLuck, Tony2009-06-051-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On ia64 with CONFIG_DMAR=n and CONFIG_SWIOTLB=y (as used in arch/ia64/configs/tiger_defconfig) there is still a link error with iommu_pass_through listed as an undefined symbol: arch/ia64/kernel/built-in.o: In function `pci_swiotlb_init': (.init.text+0x7f70): undefined reference to `iommu_pass_through' Fix it by #defining iommu_pass_through away in asm/iommu.h Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | Fix !CONFIG_DMAR build failure introduced by Intel IOMMU Pass Through SupportFenghua Yu2009-05-011-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | This updated patch should fix the compiling errors and remove the extern iommu_pass_through from drivers/pci/intel-iommu.c file. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | Intel IOMMU Pass Through SupportFenghua Yu2009-04-292-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch adds kernel parameter intel_iommu=pt to set up pass through mode in context mapping entry. This disables DMAR in linux kernel; but KVM still runs on VT-d and interrupt remapping still works. In this mode, kernel uses swiotlb for DMA API functions but other VT-d functionalities are enabled for KVM. KVM always uses multi level translation page table in VT-d. By default, pass though mode is disabled in kernel. This is useful when people don't want to enable VT-d DMAR in kernel but still want to use KVM and interrupt remapping for reasons like DMAR performance concern or debug purpose. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Weidong Han <weidong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | | Move FAULT_FLAG_xyz into handle_mm_fault() callersLinus Torvalds2009-06-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows the callers to now pass down the full set of FAULT_FLAG_xyz flags to handle_mm_fault(). All callers have been (mechanically) converted to the new calling convention, there's almost certainly room for architectures to clean up their code and then add FAULT_FLAG_RETRY when that support is added. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | dma-mapping: ia64: add CONFIG_DMA_API_DEBUG supportFUJITA Tomonori2009-06-182-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Cc: Ingo Molnar <mingo@elte.hu> Acked-by: "Luck, Tony" <tony.luck@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc; "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | dma-mapping: ia64: use asm-generic/dma-mapping-common.hFUJITA Tomonori2009-06-181-99/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Cc: Ingo Molnar <mingo@elte.hu> Acked-by: "Luck, Tony" <tony.luck@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc; "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | ia64: Fix resource assignment for root bussesMatthew Wilcox2009-06-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ia64 was assigning resources to root busses after allocations had been made for child busses. Calling pcibios_setup_root_windows() from pcibios_fixup_bus() solves this problem by assigning the resources to the root bus before child busses are scanned. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Delete pcibios_select_rootMatthew Wilcox2009-06-171-13/+0
| | | | | | | | | | | | | | | | | | | | | | | | This function was only used by pci_claim_resource(), and the last commit deleted that use. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Pull for-2.6.31 into releaseTony Luck2009-06-1745-226/+230
|\ \ \
| * | | [IA64] Convert ia64 to use int-ll64.hMatthew Wilcox2009-06-1733-204/+206
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is generally agreed that it would be beneficial for u64 to be an unsigned long long on all architectures. ia64 (in common with several other 64-bit architectures) currently uses unsigned long. Migrating piecemeal is too painful; this giant patch fixes all compilation warnings and errors that come as a result of switching to use int-ll64.h. Note that userspace will still see __u64 defined as unsigned long. This is important as it affects C++ name mangling. [Updated by Tony Luck to change efi.h:efi_freemem_callback_t to use u64 for start/end rather than unsigned long] Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] ia64 does not need umount2() syscallTony Luck2009-06-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ia64 doesn't have old and new versions of the umount system call. It just has the new version. Fixes this build warning: <stdin>:395:2: warning: #warning syscall umount2 not implemented Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] hook up new rt_tgsigqueueinfo syscallTony Luck2009-06-162-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | Assign syscall #1321 for rt_tgsigqueueinfo. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] msi_ia64.c dmar_msi_type should be staticJaswinder Singh Rajput2009-06-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] remove obsolete hw_interrupt_typeThomas Gleixner2009-06-154-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup Convert the last remaining users to struct irq_chip and remove the define. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] remove obsolete irq_desc_t typedefThomas Gleixner2009-06-159-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup Convert the last remaining users and remove the typedef. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] remove obsolete no_irq_typeThomas Gleixner2009-06-153-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup convert the last remaining users to no_irq_chip Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] unexport fpswa.hSam Ravnborg2009-06-151-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fpswa.h is not relevant for userspace, so do not export it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | | [IA64] Fix build error in paravirt_patchlist.cJes Sorensen2009-06-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andrew cleaned up some #include tangles in: commit 0d9c25dde878a636ee9a9b53923569171bf9a55b headers: move module_bug_finalize()/module_bug_cleanup() definitions into module.h which resulted in this build error for ia64: CC arch/ia64/kernel/paravirt_patchlist.o arch/ia64/kernel/paravirt_patchlist.c:43: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__initdata' arch/ia64/kernel/paravirt_patchlist.c:54: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'paravirt_get_gate_patchlist' arch/ia64/kernel/paravirt_patchlist.c:76: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'paravirt_get_gate_section' make[1]: *** [arch/ia64/kernel/paravirt_patchlist.o] Error 1 The problem was that paravirt_patchlist.c was relying on some of the nested includes (specifically that linux/bug.h included linux/module.h Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | | kmap_types: make most arches use generic header fileRandy Dunlap2009-06-161-21/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert most arches to use asm-generic/kmap_types.h. Move the KM_FENCE_ macro additions into asm-generic/kmap_types.h, controlled by __WITH_KM_FENCE from each arch's kmap_types.h file. Would be nice to be able to add custom KM_types per arch, but I don't yet see a nice, clean way to do that. Built on x86_64, i386, mips, sparc, alpha(tonyb), powerpc(tonyb), and 68k(tonyb). Note: avr32 should be able to remove KM_PTE2 (since it's not used) and then just use the generic kmap_types.h file. Get avr32 maintainer approval. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: <linux-arch@vger.kernel.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Bryan Wu <cooloney@kernel.org> Cc: Mikael Starvik <starvik@axis.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: "Luck Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | remove put_cpu_no_resched()Thomas Gleixner2009-06-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | put_cpu_no_resched() is an optimization of put_cpu() which unfortunately can cause high latencies. The nfs iostats code uses put_cpu_no_resched() in a code sequence where a reschedule request caused by an interrupt between the get_cpu() and the put_cpu_no_resched() can delay the reschedule for at least HZ. The other users of put_cpu_no_resched() optimize correctly in interrupt code, but there is no real harm in using the put_cpu() function which is an alias for preempt_enable(). The extra check of the preemmpt count is not as critical as the potential source of missing a reschedule. Debugged in the preempt-rt tree and verified in mainline. Impact: remove a high latency source [akpm@linux-foundation.org: build fix] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Tony Luck <tony.luck@intel.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | page allocator: do not check NUMA node ID when the caller knows the node is ↵Mel Gorman2009-06-164-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | valid Callers of alloc_pages_node() can optionally specify -1 as a node to mean "allocate from the current node". However, a number of the callers in fast paths know for a fact their node is valid. To avoid a comparison and branch, this patch adds alloc_pages_exact_node() that only checks the nid with VM_BUG_ON(). Callers that know their node is valid are then converted. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Paul Mundt <lethal@linux-sh.org> [for the SLOB NUMA bits] Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | mm: consolidate init_mm definitionAlexey Dobriyan2009-06-161-4/+0
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * create mm/init-mm.c, move init_mm there * remove INIT_MM, initialize init_mm with C99 initializer * unexport init_mm on all arches: init_mm is already unexported on x86. One strange place is some OMAP driver (drivers/video/omap/) which won't build modular, but it's already wants get_vm_area() export. Somebody should look there. [akpm@linux-foundation.org: add missing #includes] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Mike Frysinger <vapier.adi@gmail.com> Cc: Americo Wang <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [IA64] fix compile error in arch/ia64/mm/extable.cRusty Russell2009-06-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | ad6561dffa17f17bb68d7207d422c26c381c4313 ("module: trim exception table on init free.") put a bogus trim_init_extable() function into ia64 which didn't compile. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2009-06-125-10/+11
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: add generic lib/checksum.c asm-generic: add a generic uaccess.h asm-generic: add generic NOMMU versions of some headers asm-generic: add generic atomic.h and io.h asm-generic: add legacy I/O header files asm-generic: add generic versions of common headers asm-generic: make bitops.h usable asm-generic: make pci.h usable directly asm-generic: make get_rtc_time overridable asm-generic: rename page.h and uaccess.h asm-generic: rename atomic.h to atomic-long.h asm-generic: add a generic unistd.h asm-generic: add generic ABI headers asm-generic: add generic sysv ipc headers asm-generic: introduce asm/bitsperlong.h asm-generic: rename termios.h, signal.h and mman.h
| * \ \ asm-generic: merge branch 'master' of torvalds/linux-2.6Arnd Bergmann2009-06-1219-130/+314
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes a merge conflict against the x86 tree caused by a fix to atomic.h which I renamed to atomic_long.h. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | | | asm-generic: rename atomic.h to atomic-long.hArnd Bergmann2009-06-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing asm-generic/atomic.h only defines the atomic_long type. This renames it to atomic-long.h so we have a place to add a truly generic atomic.h that can be used on all non-SMP systems. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ingo Molnar <mingo@elte.hu>
| * | | | asm-generic: introduce asm/bitsperlong.hArnd Bergmann2009-06-112-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This provides a reliable way for asm-generic/types.h and other files to find out if it is running on a 32 or 64 bit platform. We cannot use CONFIG_64BIT for this in headers that are included from user space because CONFIG symbols are not available there. We also cannot do it inside of asm/types.h because some headers need the word size but cannot include types.h. The solution is to introduce a new header <asm/bitsperlong.h> that defines both __BITS_PER_LONG for user space and BITS_PER_LONG for usage in the kernel. The asm-generic version falls back to 32 bit unless the architecture overrides it, which I did for all 64 bit platforms. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | | | asm-generic: rename termios.h, signal.h and mman.hArnd Bergmann2009-06-112-2/+2
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing asm-generic versions are incomplete and included by some architectures. New architectures should be able to use a generic version, so rename the existing files and change all users, which lets us add the new files. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | | | PM: Remove unused asm/suspend.hMagnus Damm2009-06-121-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes unused asm/suspend.h files for the following architectures: alpha, arm, ia64, m68k, mips, s390, um Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* | | | module: trim exception table on init free.Rusty Russell2009-06-121-0/+26
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's theoretically possible that there are exception table entries which point into the (freed) init text of modules. These could cause future problems if other modules get loaded into that memory and cause an exception as we'd see the wrong fixup. The only case I know of is kvm-intel.ko (when CONFIG_CC_OPTIMIZE_FOR_SIZE=n). Amerigo fixed this long-standing FIXME in the x86 version, but this patch is more general. This implements trim_init_extable(); most archs are simple since they use the standard lib/extable.c sort code. Alpha and IA64 use relative addresses in their fixups, so thier trimming is a slight variation. Sparc32 is unique; it doesn't seem to define ARCH_HAS_SORT_EXTABLE, yet it defines its own sort_extable() which overrides the one in lib. It doesn't sort, so we have to mark deleted entries instead of actually trimming them. Inspired-by: Amerigo Wang <amwang@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: linux-alpha@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: linux-ia64@vger.kernel.org
* | | Merge branch 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2009-06-1113-113/+285
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (138 commits) KVM: Prevent overflow in largepages calculation KVM: Disable large pages on misaligned memory slots KVM: Add VT-x machine check support KVM: VMX: Rename rmode.active to rmode.vm86_active KVM: Move "exit due to NMI" handling into vmx_complete_interrupts() KVM: Disable CR8 intercept if tpr patching is active KVM: Do not migrate pending software interrupts. KVM: inject NMI after IRET from a previous NMI, not before. KVM: Always request IRQ/NMI window if an interrupt is pending KVM: Do not re-execute INTn instruction. KVM: skip_emulated_instruction() decode instruction if size is not known KVM: Remove irq_pending bitmap KVM: Do not allow interrupt injection from userspace if there is a pending event. KVM: Unprotect a page if #PF happens during NMI injection. KVM: s390: Verify memory in kvm run KVM: s390: Sanity check on validity intercept KVM: s390: Unlink vcpu on destroy - v2 KVM: s390: optimize float int lock: spin_lock_bh --> spin_lock KVM: s390: use hrtimer for clock wakeup from idle - v2 KVM: s390: Fix memory slot versus run - v3 ...
| * | | KVM: use smp_send_reschedule in kvm_vcpu_kickMarcelo Tosatti2009-06-102-14/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | KVM uses a function call IPI to cause the exit of a guest running on a physical cpu. For virtual interrupt notification there is no need to wait on IPI receival, or to execute any function. This is exactly what the reschedule IPI does, without the overhead of function IPI. So use it instead of smp_call_function_single in kvm_vcpu_kick. Also change the "guest_mode" variable to a bit in vcpu->requests, and use that to collapse multiple IPI's that would be issued between the first one and zeroing of guest mode. This allows kvm_vcpu_kick to called with interrupts disabled. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | | KVM: Enable snooping control for supported hardwareSheng Yang2009-06-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Memory aliases with different memory type is a problem for guest. For the guest without assigned device, the memory type of guest memory would always been the same as host(WB); but for the assigned device, some part of memory may be used as DMA and then set to uncacheable memory type(UC/WC), which would be a conflict of host memory type then be a potential issue. Snooping control can guarantee the cache correctness of memory go through the DMA engine of VT-d. [avi: fix build on ia64] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | | KVM: ia64: ia64 vcpu_reset() do not call kmalloc() with irqs disabledJes Sorensen2009-06-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Restore local irq enabled state before calling kvm_arch_vcpu_init(), which calls kmalloc(GFP_KERNEL). Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
generated by cgit (git 2.34.1) at 2024-11-07 22:29:14 +0000