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* [IA64] implement ticket locks for ItaniumTony Luck2009-09-251-3/+1
| | | | | | | | | | | | | | | | | Back in January 2008 Nick Piggin implemented "ticket" spinlocks for X86 (See commit 314cdbefd1fd0a7acf3780e9628465b77ea6a836). IA64 implementation has a couple of differences because of the available atomic operations ... e.g. we have no fetchadd2 instruction that operates on a 16-bit quantity so we make ticket locks use a 32-bit word for each of the current ticket and now-serving values. Performance on uncontended locks is about 8% worse than the previous implementation, but this seems a good trade for determinism in the contended case. Performance impact on macro-level benchmarks is in the noise. Signed-off-by: Tony Luck <tony.luck@intel.com>
* kcore: register text area in generic wayKAMEZAWA Hiroyuki2009-09-231-0/+4
| | | | | | | | | | | | | | | | | | | | Some 64bit arch has special segment for mapping kernel text. It should be entried to /proc/kcore in addtion to direct-linear-map, vmalloc area. This patch unifies KCORE_TEXT entry scattered under x86 and ia64. I'm not familiar with other archs (mips has its own even after this patch) but range of [_stext ..._end) is a valid area of text and it's not in direct-map area, defining CONFIG_ARCH_PROC_KCORE_TEXT is only a necessary thing to do. Note: I left mips as it is now. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-09-151-0/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (46 commits) powerpc64: convert to dynamic percpu allocator sparc64: use embedding percpu first chunk allocator percpu: kill lpage first chunk allocator x86,percpu: use embedding for 64bit NUMA and page for 32bit NUMA percpu: update embedding first chunk allocator to handle sparse units percpu: use group information to allocate vmap areas sparsely vmalloc: implement pcpu_get_vm_areas() vmalloc: separate out insert_vmalloc_vm() percpu: add chunk->base_addr percpu: add pcpu_unit_offsets[] percpu: introduce pcpu_alloc_info and pcpu_group_info percpu: move pcpu_lpage_build_unit_map() and pcpul_lpage_dump_cfg() upward percpu: add @align to pcpu_fc_alloc_fn_t percpu: make @dyn_size mandatory for pcpu_setup_first_chunk() percpu: drop @static_size from first chunk allocators percpu: generalize first chunk allocator selection percpu: build first chunk allocators selectively percpu: rename 4k first chunk allocator to page percpu: improve boot messages percpu: fix pcpu_reclaim() locking ... Fix trivial conflict as by Tejun Heo in kernel/sched.c
| * percpu: use dynamic percpu allocator as the default percpu allocatorTejun Heo2009-06-241-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes most !CONFIG_HAVE_SETUP_PER_CPU_AREA archs use dynamic percpu allocator. The first chunk is allocated using embedding helper and 8k is reserved for modules. This ensures that the new allocator behaves almost identically to the original allocator as long as static percpu variables are concerned, so it shouldn't introduce much breakage. s390 and alpha use custom SHIFT_PERCPU_PTR() to work around addressing range limit the addressing model imposes. Unfortunately, this breaks if the address is specified using a variable, so for now, the two archs aren't converted. The following architectures are affected by this change. * sh * arm * cris * mips * sparc(32) * blackfin * avr32 * parisc (broken, under investigation) * m32r * powerpc(32) As this change makes the dynamic allocator the default one, CONFIG_HAVE_DYNAMIC_PER_CPU_AREA is replaced with its invert - CONFIG_HAVE_LEGACY_PER_CPU_AREA, which is added to yet-to-be converted archs. These archs implement their own setup_per_cpu_areas() and the conversion is not trivial. * powerpc(64) * sparc(64) * ia64 * alpha * s390 Boot and batch alloc/free tests on x86_32 with debug code (x86_32 doesn't use default first chunk initialization). Compile tested on sparc(32), powerpc(32), arm and alpha. Kyle McMartin reported that this change breaks parisc. The problem is still under investigation and he is okay with pushing this patch forward and fixing parisc later. [ Impact: use dynamic allocator for most archs w/o custom percpu setup ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Reviewed-by: Christoph Lameter <cl@linux.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Mikael Starvik <starvik@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Bryan Wu <cooloney@kernel.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu>
* | x86, pat: Generalize the use of page flag PG_uncachedVenkatesh Pallipadi2009-08-261-0/+4
|/ | | | | | | | | | | Only IA64 was using PG_uncached as of now. We now intend to use this bit in x86 as well, to keep track of memory type of those addresses that have page struct for them. So, generalize the use of that bit across ia64 and x86. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* dma-mapping: ia64: add CONFIG_DMA_API_DEBUG supportFUJITA Tomonori2009-06-181-0/+1
| | | | | | | | | | | | 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>
* Merge branches 'tracing/ftrace' and 'linus' into tracing/coreIngo Molnar2009-02-271-0/+11
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| * [IA64] enable setting DMAR on by defaultKyle McMartin2009-02-251-0/+11
| | | | | | | | | | | | | | | | | | The previous commit which introduced the DMAR_DEFAULT_ON setting in drivers/pci/dmar.c neglected to add the ability for ia64 to enable the IOMMU by default. Rectify that mistake, doh! Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge branch 'tracing/ftrace'; commit 'v2.6.29-rc6' into tracing/coreIngo Molnar2009-02-241-2/+5
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| * [IA64] fixes configs and add default config for ia64 xen domUIsaku Yamahata2009-02-191-0/+4
| | | | | | | | | | | | | | | | This patch fixes xen related Kconfigs and add default config file for ia64 xen domU. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <aegl@agluck-desktop.(none)>
| * [IA64] Build fix for __early_pfn_to_nid() undefined link errorTony Luck2009-02-191-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ia64 only defines __early_pfn_to_nid() for SPARSEMEM && NUMA configurations, so the recent: commit: f2dbcfa738368c8a40d4a5f0b65dc9879577cb21 mm: clean up for early_pfn_to_nid() ends up with some link problems for certain configuration files. Fix arch/ia64/Kconfig to only define HAVE_ARCH_EARLY_PFN_TO_NID in the cases where we do provide this function. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge branch 'tracing/ftrace'; commit 'v2.6.29-rc2' into tracing/coreIngo Molnar2009-01-181-0/+1
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| * [IA64] Turn on CONFIG_HAVE_UNSTABLE_CLOCKTony Luck2009-01-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | sched_clock() on ia64 is based on ar.itc, so is never completely synchronized between cpus. On some platforms (e.g. certain models of SGI Altix) it may be running at radically different frequencies. Based on a patch from Dimitri Sivanich which set this just for SN2 && GENERIC kernels ... it is needed for all ia64 machines. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | ftrace, ia64: IA64 dynamic ftrace supportShaohua Li2009-01-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IA64 dynamic ftrace support. The original _mcount stub for each function is like: alloc r40=ar.pfs,12,8,0 mov r43=r0;; mov r42=b0 mov r41=r1 nop.i 0x0 br.call.sptk.many b0 = _mcount;; The patch convert it to below for nop: [MII] nop.m 0x0 mov r3=ip nop.i 0x0 [MLX] nop.m 0x0 nop.x 0x0;; This isn't completely nop, as there is one instuction 'mov r3=ip', but it should be light and harmless for code follow it. And below is for call [MII] nop.m 0x0 mov r3=ip nop.i 0x0 [MLX] nop.m 0x0 brl.many .;; In this way, only one instruction is changed to convert code between nop and call. This should meet dyn-ftrace's requirement. But this requires CPU support brl instruction, so dyn-ftrace isn't supported for old Itanium system. Assume there are quite few such old system running. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | ftrace, ia64: IA64 static ftrace supportShaohua Li2009-01-141-0/+1
|/ | | | | | | | | | | | | | | | IA64 ftrace suppport. In IA64, below code will be added in each function if -pg is enabled. alloc r40=ar.pfs,12,8,0 mov r43=r0;; mov r42=b0 mov r41=r1 nop.i 0x0 br.call.sptk.many b0 = _mcount;; Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* select IOMMU_API when DMAR and/or AMD_IOMMU is selectedJoerg Roedel2009-01-031-0/+3
| | | | | | | These two IOMMUs can implement the current version of this API. So select the API if one or both of these IOMMU drivers is selected. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* Merge branch 'linus' into sched/coreIngo Molnar2008-11-191-9/+10
|\ | | | | | | | | Conflicts: kernel/Makefile
| * [IA64] reorder Kconfig options to match x86Bjorn Helgaas2008-11-061-9/+9
| | | | | | | | | | | | | | | | | | No functional change, just reorder some config options and update the "Power management and ACPI" label to match the defacto x86 standard. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] Build VT-D iommu support into generic kernelTony Luck2008-11-041-0/+1
| | | | | | | | | | | | | | Now that all the ia64 mmu pieces are in the tree we can build support into the generic kernel. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | sched: rename SCHED_NO_NO_OMIT_FRAME_POINTER => SCHED_OMIT_FRAME_POINTERIngo Molnar2008-11-111-1/+1
|/ | | | | | | | | | | | | | Impact: cleanup, change .config option name We had this ugly config name for a long time for hysteric raisons. Rename it to a saner name. We still cannot get rid of it completely, until /proc/<pid>/stack usage replaces WCHAN usage for good. We'll be able to do that in the v2.6.29/v2.6.30 timeframe. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'release' of ↵Linus Torvalds2008-10-231-0/+50
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (41 commits) [IA64] Fix annoying IA64_TR_ALLOC_MAX message. [IA64] kill sys32_pipe [IA64] remove sys32_pause [IA64] Add Variable Page Size and IA64 Support in Intel IOMMU ia64/pv_ops: paravirtualized instruction checker. ia64/xen: a recipe for using xen/ia64 with pv_ops. ia64/pv_ops: update Kconfig for paravirtualized guest and xen. ia64/xen: preliminary support for save/restore. ia64/xen: define xen machine vector for domU. ia64/pv_ops/xen: implement xen pv_time_ops. ia64/pv_ops/xen: implement xen pv_irq_ops. ia64/pv_ops/xen: define the nubmer of irqs which xen needs. ia64/pv_ops/xen: implement xen pv_iosapic_ops. ia64/pv_ops/xen: paravirtualize entry.S for ia64/xen. ia64/pv_ops/xen: paravirtualize ivt.S for xen. ia64/pv_ops/xen: paravirtualize DO_SAVE_MIN for xen. ia64/pv_ops/xen: define xen paravirtualized instructions for hand written assembly code ia64/pv_ops/xen: define xen pv_cpu_ops. ia64/pv_ops/xen: define xen pv_init_ops for various xen initialization. ia64/pv_ops/xen: elf note based xen startup. ...
| * Pull vtd-iommu into release branchTony Luck2008-10-171-0/+17
| |\ | | | | | | | | | | | | Conflicts: arch/ia64/kernel/acpi.c
| | * [IA64] Add Variable Page Size and IA64 Support in Intel IOMMUFenghua Yu2008-10-171-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch contains Intel IOMMU IA64 specific code. It defines new machvec dig_vtd, hooks for IOMMU, DMAR table detection, cache line flush function, etc. For a generic kernel with CONFIG_DMAR=y, if Intel IOMMU is detected, dig_vtd is used for machinve vector. Otherwise, kernel falls back to dig machine vector. Kernel parameter "machvec=dig" or "intel_iommu=off" can be used to force kernel to boot dig machine vector. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | Pull pv_ops-xen into release branchTony Luck2008-10-171-0/+32
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| | * | ia64/pv_ops: update Kconfig for paravirtualized guest and xen.Isaku Yamahata2008-10-171-0/+32
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | introduce CONFIG_PARAVIRT_GUEST, CONFIG_PARAVIRT for paravirtualized guest. introduce CONFIG_XEN, CONFIG_IA64_XEN_GUEST for xen. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | Pull utrace into release branchTony Luck2008-10-171-0/+1
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| | * [IA64] utrace Enable trace hook configShaohua Li2008-10-061-0/+1
| | | | | | | | | | | | | | | Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | container freezer: implement freezer cgroup subsystemMatt Helsley2008-10-201-0/+2
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a new freezer subsystem in the control groups framework. It provides a way to stop and resume execution of all tasks in a cgroup by writing in the cgroup filesystem. The freezer subsystem in the container filesystem defines a file named freezer.state. Writing "FROZEN" to the state file will freeze all tasks in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in the cgroup. Reading will return the current state. * Examples of usage : # mkdir /containers/freezer # mount -t cgroup -ofreezer freezer /containers # mkdir /containers/0 # echo $some_pid > /containers/0/tasks to get status of the freezer subsystem : # cat /containers/0/freezer.state RUNNING to freeze all tasks in the container : # echo FROZEN > /containers/0/freezer.state # cat /containers/0/freezer.state FREEZING # cat /containers/0/freezer.state FROZEN to unfreeze all tasks in the container : # echo RUNNING > /containers/0/freezer.state # cat /containers/0/freezer.state RUNNING This is the basic mechanism which should do the right thing for user space task in a simple scenario. It's important to note that freezing can be incomplete. In that case we return EBUSY. This means that some tasks in the cgroup are busy doing something that prevents us from completely freezing the cgroup at this time. After EBUSY, the cgroup will remain partially frozen -- reflected by freezer.state reporting "FREEZING" when read. The state will remain "FREEZING" until one of these things happens: 1) Userspace cancels the freezing operation by writing "RUNNING" to the freezer.state file 2) Userspace retries the freezing operation by writing "FROZEN" to the freezer.state file (writing "FREEZING" is not legal and returns EIO) 3) The tasks that blocked the cgroup from entering the "FROZEN" state disappear from the cgroup's set of tasks. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: export thaw_process] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Tested-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>
* / Kconfig: eliminate "def_bool n" constructsJan Beulich2008-10-161-8/+0
|/ | | | | | | | | | | | | | | | | Using "def_bool n" is pointless, simply using bool here appears more appropriate. Further, retaining such options that don't have a prompt and aren't selected by anything seems also at least questionable. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Tony Luck <tony.luck@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] Eliminate trailing backquote in IA64_SGI_UVJack Steiner2008-08-041-2/+2
| | | | | | | Eliminate trailing backquote in IA64_SGI_UV config. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Allow ia64 to CONFIG_NR_CPUS up to 4096Robin Holt2008-08-041-3/+3
| | | | | | | | ia64 has compiled with NR_CPUS=4096 for a couple releases, just forgot to update Kconfig to allow it. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Remove experimental status of kdumpBernhard Walle2008-07-171-2/+2
| | | | | | | | This patch removes the experimental status of kdump on IA64. kdump is on IA64 now since more than one year and it has proven to be stable. Signed-off-by: Bernhard Walle <bwalle@suse.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64: convert to generic helpers for IPI function callsJens Axboe2008-06-261-0/+1
| | | | | | | | This converts ia64 to use the new helpers for smp_call_function() and friends, and adds support for smp_call_function_single(). Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [IA64] machvec support for SGI UV platformJack Steiner2008-05-141-0/+13
| | | | | | | | This patch adds the basic IA64 machvec infrastructure to support the SGI "UV" platform. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* dma: add dma_*map*_attrs() interfacesArthur Kepner2008-04-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Introduce new interfaces, dma_*map*_attrs(), for passing architecture-specific attributes when memory is mapped and unmapped for DMA. Give the interfaces default implementations which ignore attributes. Also introduce the dma_{set|get}_attr() interfaces for setting and retrieving individual attributes. Define one attribute, DMA_ATTR_WRITE_BARRIER, in anticipation of its use by ia64/sn. Select whether architectures implement arch-specific versions of the dma_*map*_attrs() interfaces via HAVE_DMA_ATTRS in Kconfig. [markn@au1.ibm.com: dma_{set,get}_attr() have to be static inline] Signed-off-by: Arthur Kepner <akepner@sgi.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Jes Sorensen <jes@sgi.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Roland Dreier <rdreier@cisco.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Mark Nelson <markn@au1.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* swiotlb: use iommu_is_span_boundary helper functionFUJITA Tomonori2008-04-291-1/+4
| | | | | | | | | | | | | | iommu_is_span_boundary in lib/iommu-helper.c was exported for PARISC IOMMUs (commit 3715863aa142c4f4c5208f5f3e5e9bac06006d2f). SWIOTLB can use it instead of the homegrown function. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* KVM: ia64: Enable kvm build for ia64Xiantao Zhang2008-04-271-0/+3
| | | | | | | Update the related Makefile and KConfig for kvm build Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* [IA64] move XP and XPC to drivers/misc/sgi-xpDean Nelson2008-04-221-11/+0
| | | | | | | Move XPC and XPNET from arch/ia64/sn/kernel to drivers/misc/sgi-xp. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Pull miscellaneous into release branchTony Luck2008-04-171-0/+3
|\ | | | | | | | | | | Conflicts: arch/ia64/kernel/mca.c
| * [IA64] make IOMMU respect the segment boundary limitsFUJITA Tomonori2008-04-091-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | IA64's IOMMU implementation allocates memory areas spanning LLD's segment boundary limit. It forces low level drivers to have a workaround to adjust scatter lists that the IOMMU builds. We are in the process of making all the IOMMUs respect the segment boundary limits to remove such work around in LLDs. This patch is for IA64's IOMMU. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Pull virt-cpu-accounting into release branchTony Luck2008-04-171-0/+11
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| * [IA64] VIRT_CPU_ACCOUNTING (accurate cpu time accounting)Hidetoshi Seto2008-02-201-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements VIRT_CPU_ACCOUNTING for ia64, which enable us to use more accurate cpu time accounting. The VIRT_CPU_ACCOUNTING is an item of kernel config, which s390 and powerpc arch have. By turning this config on, these archs change the mechanism of cpu time accounting from tick-sampling based one to state-transition based one. The state-transition based accounting is done by checking time (cycle counter in processor) at every state-transition point, such as entrance/exit of kernel, interrupt, softirq etc. The difference between point to point is the actual time consumed during in the state. There is no doubt about that this value is more accurate than that of tick-sampling based accounting. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge branch 'release' of ↵Linus Torvalds2008-03-041-0/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] fix ia64 kprobes compilation [IA64] move gcc_intrin.h from header-y to unifdef-y [IA64] workaround tiger ia64_sal_get_physical_id_info hang [IA64] move defconfig to arch/ia64/configs/ [IA64] Fix irq migration in multiple vector domain [IA64] signal(ia64_ia32): add a signal stack overflow check [IA64] signal(ia64): add a signal stack overflow check [IA64] CONFIG_SGI_SN2 - auto select NUMA and ACPI_NUMA
| * | [IA64] CONFIG_SGI_SN2 - auto select NUMA and ACPI_NUMAJes Sorensen2008-03-041-0/+2
| |/ | | | | | | | | | | | | | | Auto select CONFIG_NUMA and CONFIG_ACPI_NUMA when picking SN2, similar to how they are selected automatically for CONFIG_IA64_GENERIC. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* / Kprobes: indicate kretprobe support in KconfigAnanth N Mavinakayanahalli2008-03-041-0/+1
|/ | | | | | | | | | | | | | | | | Add CONFIG_HAVE_KRETPROBES to the arch/<arch>/Kconfig file for relevant architectures with kprobes support. This facilitates easy handling of in-kernel modules (like samples/kprobes/kretprobe_example.c) that depend on kretprobes being present in the kernel. Thanks to Sam Ravnborg for helping make the patch more lean. Per Mathieu's suggestion, added CONFIG_KRETPROBES and fixed up dependencies. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] Fix build for sim_defconfigTony Luck2008-02-111-0/+7
| | | | | | | | | | | | | | Commit bdc807871d58285737d50dc6163d0feb72cb0dc2 broke the build for this config because the sim_defconfig selects CONFIG_HZ=250 but include/asm-ia64/param.h has an ifdef for the simulator to force HZ to 32. So we ended up with a kernel/timeconst.h set for HZ=250 ... which then failed the check for the right HZ value and died with: Drop the #ifdef magic from param.h and make force CONFIG_HZ=32 directly for the simulator. Signed-off-by: Tony Luck <tony.luck@intel.com>
* ide: introduce HAVE_IDESam Ravnborg2008-02-091-0/+1
| | | | | | | | | | | | To allow flexible configuration of IDE introduce HAVE_IDE. All archs except arm, um and s390 unconditionally select it. For arm the actual configuration determine if IDE is supported. This is a step towards introducing drivers/Kconfig for arm. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Russell King - ARM Linux <linux@arm.linux.org.uk> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2008-02-041-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (79 commits) Jesper Juhl is the new trivial patches maintainer Documentation: mention email-clients.txt in SubmittingPatches fs/binfmt_elf.c: spello fix do_invalidatepage() comment typo fix Documentation/filesystems/porting fixes typo fixes in net/core/net_namespace.c typo fix in net/rfkill/rfkill.c typo fixes in net/sctp/sm_statefuns.c lib/: Spelling fixes kernel/: Spelling fixes include/scsi/: Spelling fixes include/linux/: Spelling fixes include/asm-m68knommu/: Spelling fixes include/asm-frv/: Spelling fixes fs/: Spelling fixes drivers/watchdog/: Spelling fixes drivers/video/: Spelling fixes drivers/ssb/: Spelling fixes drivers/serial/: Spelling fixes drivers/scsi/: Spelling fixes ...
| * remove Documentation/smp.txtAdrian Bunk2008-02-031-2/+2
| | | | | | | | | | | | | | | | | | | | After seeing the filename I'd have expected something about the implementation of SMP in the Linux kernel - not some notes on kernel configuration and building trivialities noone would search at this place. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Alan Cox <alan@redhat.com>
* | Move Kconfig.instrumentation to arch/Kconfig and init/KconfigMathieu Desnoyers2008-02-031-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the instrumentation Kconfig to arch/Kconfig for architecture dependent options - oprofile - kprobes and init/Kconfig for architecture independent options - profiling - markers Remove the "Instrumentation Support" menu. Everything moves to "General setup". Delete the kernel/Kconfig.instrumentation file. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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