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2008-07-16ACPI : Create "idle=nomwait" bootparamZhao Yakui
"idle=nomwait" disables the use of the MWAIT instruction from both C1 (C1_FFH) and deeper (C2C3_FFH) C-states. When MWAIT is unavailable, the BIOS and OS generally negotiate to use the HALT instruction for C1, and use IO accesses for deeper C-states. This option is useful for power and performance comparisons, and also to work around BIOS bugs where broken MWAIT support is advertised. http://bugzilla.kernel.org/show_bug.cgi?id=10807 http://bugzilla.kernel.org/show_bug.cgi?id=10914 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Li Shaohua <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16ACPI: Create "idle=halt" bootparamZhao Yakui
"idle=halt" limits the idle loop to using the halt instruction. No MWAIT, no IO accesses, no C-states deeper than C1. If something is broken in the idle code, "idle=halt" is a less severe workaround than "idle=poll" which disables all power savings. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-06-26ia64: convert to generic helpers for IPI function callsJens Axboe
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>
2008-06-16[IA64] Fix CONFIG_IA64_SGI_UV build errorJack Steiner
Fix build error in CONFIG_IA64_SGI_UV config. (GENERIC builds are ok). Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-27[IA64] Workaround for RSE issueTony Luck
Problem: An application violating the architectural rules regarding operation dependencies and having specific Register Stack Engine (RSE) state at the time of the violation, may result in an illegal operation fault and invalid RSE state. Such faults may initiate a cascade of repeated illegal operation faults within OS interruption handlers. The specific behavior is OS dependent. Implication: An application causing an illegal operation fault with specific RSE state may result in a series of illegal operation faults and an eventual OS stack overflow condition. Workaround: OS interruption handlers that switch to kernel backing store implement a check for invalid RSE state to avoid the series of illegal operation faults. The core of the workaround is the RSE_WORKAROUND code sequence inserted into each invocation of the SAVE_MIN_WITH_COVER and SAVE_MIN_WITH_COVER_R19 macros. This sequence includes hard-coded constants that depend on the number of stacked physical registers being 96. The rest of this patch consists of code to disable this workaround should this not be the case (with the presumption that if a future Itanium processor increases the number of registers, it would also remove the need for this patch). Move the start of the RBS up to a mod32 boundary to avoid some corner cases. The dispatch_illegal_op_fault code outgrew the spot it was squatting in when built with this patch and CONFIG_VIRT_CPU_ACCOUNTING=y Move it out to the end of the ivt. Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-18KVM: ia64: Set KVM_IOAPIC_NUM_PINS to 48Xiantao Zhang
Guest's firmware needs an iosapic with 48 pins for ia64 guests. Needed to get networking going. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-05-18KVM: ia64: Define new kvm_fpreg struture to replace ia64_fpregXiantao Zhang
The kernel's ia64_fpreg structure conflicts with userspace headers, so define a new structure to replace it. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-05-14[IA64] machvec support for SGI UV platformJack Steiner
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>
2008-05-14[IA64] Add header files for SGI UV platformJack Steiner
Add new UV-specific header files. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-02ia64: types: use <asm-generic/int-*.h> for the ia64 architectureH. Peter Anvin
This modifies <asm-ia64/types.h> to use the <asm-generic/int-*.h> generic include files. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Acked-by: Tony Luck <tony.luck@intel.com>
2008-05-02Merge branch 'release' of ↵Linus Torvalds
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 file and descriptor handling in perfmon [IA64] TS_RESTORE_SIGMASK [IA64] smp.c coding style fix [IA64] fix section mismatch in arch/ia64/kernel/topology.c [IA64] fix section mismatch in arch/ia64/kernel/palinfo.c [IA64] fix section mismatch in arch/ia64/kernel/irq.c [IA64] fix section mismatch in arch/ia64/kernel/acpi.c
2008-05-01[IA64] TS_RESTORE_SIGMASKRoland McGrath
Replace TIF_RESTORE_SIGMASK with TS_RESTORE_SIGMASK and define our own set_restore_sigmask() function. This saves the costly SMP-safe set_bit operation, which we do not need for the sigmask flag since TIF_SIGPENDING always has to be set too. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-01dmi: clean-up dmi helper declarationsJean Delvare
The declaration of dmi helper functions is a bit messy and inconsistent at the moment: * On ia64 they are declared in <asm/io.h>. * On x86-64 they are declared in <asm/dmi.h>. * On i386 they are declared both in <asm/io.h> and <asm/dmi.h>. Fix the header files so that the dmi helper functions are consistently defined in <asm/dmi.h>. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30[IA64] fix section mismatch in arch/ia64/kernel/topology.cHidetoshi Seto
This patch silences: WARNING: vmlinux.o(.text+0x44672): Section mismatch in reference from the function arch_register_cpu() to the function .cpuinit.text:register_cpu() Changes are based on codes in arch/x86/kernel/topology.c Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-30asm-*/futex.h should include linux/uaccess.hJeff Dike
Lots of asm-*/futex.h call pagefault_enable and pagefault_disable, which are declared in linux/uaccess.h, without including linux/uaccess.h. They all include asm/uaccess.h, so this patch replaces asm/uaccess.h with linux/uaccess.h. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> 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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30signals: ia64 renumber TIF_RESTORE_SIGMASKakpm@linux-foundation.org
TIF_RESTORE_SIGMASK no longer needs to be in the _TIF_WORK_* masks. Those low bits are scarce. Renumber TIF_RESTORE_SIGMASK to free one up. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29[IA64] Provide ACPI fixup for /proc/cpuinfo/physical_idAlex Chiang
Legacy HP ia64 platforms currently cannot provide /proc/cpuinfo/physical_id due to legacy SAL/PAL implementations. However, that physical topology information can be obtained via ACPI. Provide an interface that gives ACPI one last chance to provide physical_id for these legacy platforms. This logic only comes into play iff: - ACPI actually provides slot information for the CPU - we lack a valid socket_id Otherwise, we don't do anything. Since x86 uses the ACPI processor driver as well, we provide a nop stub function for arch_fix_phys_package_id() in asm-x86/topology.h Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-29[IA64] allocate multiple contiguous pages via uncached allocatorDean Nelson
Enable the uncached allocator to allocate multiple pages of contiguous uncached memory. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-29kernel: Move arches to use common unaligned accessHarvey Harrison
Unaligned access is ok for the following arches: cris, m68k, mn10300, powerpc, s390, x86 Arches that use the memmove implementation for native endian, and the byteshifting for the opposite endianness. h8300, m32r, xtensa Packed struct for native endian, byteshifting for other endian: alpha, blackfin, ia64, parisc, sparc, sparc64, mips, sh m86knommu is generic_be for Coldfire, otherwise unaligned access is ok. frv, arm chooses endianness based on compiler settings, uses the byteshifting versions. Remove the unaligned trap handler from frv as it is now unused. v850 is le, uses the byteshifting versions for both be and le. Remove the now unused asm-generic implementation. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29dma/ia64: update ia64 machvecs, swiotlb.cArthur Kepner
Change all ia64 machvecs to use the new dma_*map*_attrs() interfaces. Implement the old dma_*map_*() interfaces in terms of the corresponding new interfaces. For ia64/sn, make use of one dma attribute, DMA_ATTR_WRITE_BARRIER. Introduce swiotlb_*map*_attrs() functions. 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: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28fix ia64 local_irq_save() et.al.Al Viro
psr is not a good name for local variable in macro body when it has a good chance of being the argument of said macro (actually is at least in one place) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28hugetlbfs: common code update for s390Gerald Schaefer
Huge ptes have a special type on s390 and cannot be handled with the standard pte functions in certain cases, e.g. because of a different location of the invalid bit. This patch adds some new architecture- specific functions to hugetlb common code, as a prerequisite for the s390 large page support. This won't affect other architectures in functionality, but I need to add some new dummy inline functions to the headers. Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> 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>
2008-04-28hugetlbfs: add missing TLB flush to hugetlb_cow()Gerald Schaefer
A cow break on a hugetlbfs page with page_count > 1 will set a new pte with set_huge_pte_at(), w/o any tlb flush operation. The old pte will remain in the tlb and subsequent write access to the page will result in a page fault loop, for as long as it may take until the tlb is flushed from somewhere else. This patch introduces an architecture-specific huge_ptep_clear_flush() function, which is called before the the set_huge_pte_at() in hugetlb_cow(). ATTENTION: This is just a nop on all architectures for now, the s390 implementation will come with our large page patch later. Other architectures should define their own huge_ptep_clear_flush() if needed. Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> 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>
2008-04-28hugetlbfs: architecture header cleanupGerald Schaefer
This patch moves all architecture functions for hugetlb to architecture header files (include/asm-foo/hugetlb.h) and converts all macros to inline functions. It also removes (!) ARCH_HAS_HUGEPAGE_ONLY_RANGE, ARCH_HAS_HUGETLB_FREE_PGD_RANGE, ARCH_HAS_PREPARE_HUGEPAGE_RANGE, ARCH_HAS_SETCLEAR_HUGE_PTE and ARCH_HAS_HUGETLB_PREFAULT_HOOK. Getting rid of the ARCH_HAS_xxx #ifdef and macro fugliness should increase readability and maintainability, at the price of some code duplication. An asm-generic common part would have reduced the loc, but we would end up with new ARCH_HAS_xxx defines eventually. Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> 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>
2008-04-28mm: introduce pte_special pte bitNick Piggin
s390 for one, cannot implement VM_MIXEDMAP with pfn_valid, due to their memory model (which is more dynamic than most). Instead, they had proposed to implement it with an additional path through vm_normal_page(), using a bit in the pte to determine whether or not the page should be refcounted: vm_normal_page() { ... if (unlikely(vma->vm_flags & (VM_PFNMAP|VM_MIXEDMAP))) { if (vma->vm_flags & VM_MIXEDMAP) { #ifdef s390 if (!mixedmap_refcount_pte(pte)) return NULL; #else if (!pfn_valid(pfn)) return NULL; #endif goto out; } ... } This is fine, however if we are allowed to use a bit in the pte to determine refcountedness, we can use that to _completely_ replace all the vma based schemes. So instead of adding more cases to the already complex vma-based scheme, we can have a clearly seperate and simple pte-based scheme (and get slightly better code generation in the process): vm_normal_page() { #ifdef s390 if (!mixedmap_refcount_pte(pte)) return NULL; return pte_page(pte); #else ... #endif } And finally, we may rather make this concept usable by any architecture rather than making it s390 only, so implement a new type of pte state for this. Unfortunately the old vma based code must stay, because some architectures may not be able to spare pte bits. This makes vm_normal_page a little bit more ugly than we would like, but the 2 cases are clearly seperate. So introduce a pte_special pte state, and use it in mm/memory.c. It is currently a noop for all architectures, so this doesn't actually result in any compiled code changes to mm/memory.o. BTW: I haven't put vm_normal_page() into arch code as-per an earlier suggestion. The reason is that, regardless of where vm_normal_page is actually implemented, the *abstraction* is still exactly the same. Also, while it depends on whether the architecture has pte_special or not, that is the only two possible cases, and it really isn't an arch specific function -- the role of the arch code should be to provide primitive functions and accessors with which to build the core code; pte_special does that. We do not want architectures to know or care about vm_normal_page itself, and we definitely don't want them being able to invent something new there out of sight of mm/ code. If we made vm_normal_page an arch function, then we have to make vm_insert_mixed (next patch) an arch function too. So I don't think moving it to arch code fundamentally improves any abstractions, while it does practically make the code more difficult to follow, for both mm and arch developers, and easier to misuse. [akpm@linux-foundation.org: build fix] Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Carsten Otte <cotte@de.ibm.com> Cc: Jared Hulbert <jaredeh@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-27KVM: Rename VCPU_MP_STATE_* to KVM_MP_STATE_*Avi Kivity
We wish to export it to userspace, so move it into the kvm namespace. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: ia64: Add header files for kvm/ia64Xiantao Zhang
Three header files are added: asm-ia64/kvm.h asm-ia64/kvm_host.h asm-ia64/kvm_para.h Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: ia64: Prepare some structure and routines for kvm useXiantao Zhang
Register structures are defined per SDM. Add three small routines for kernel: ia64_ttag, ia64_loadrs, ia64_flushrs Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-26generic: implement __fls on all 64-bit archsAlexander van Heukelum
Implement __fls on all 64-bit archs: alpha has an implementation of fls64. Added __fls(x) = fls64(x) - 1. ia64 has fls, but not __fls. Added __fls based on code of fls. mips and powerpc have __ilog2, which is the same as __fls. Added __fls = __ilog2. parisc, s390, sh and sparc64: Include generic __fls. x86_64 already has __fls. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-22[IA64] move XP and XPC to drivers/misc/sgi-xpDean Nelson
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>
2008-04-22[IA64] simplify notify hooks in mca.cHidetoshi Seto
There are many notify_die() and almost all take same style with ia64_mca_spin(). This patch defines macros and replace them all, to reduce lines and to improve readability. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-21Merge branch 'semaphore' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc * 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: Deprecate the asm/semaphore.h files in feature-removal-schedule. Convert asm/semaphore.h users to linux/semaphore.h security: Remove unnecessary inclusions of asm/semaphore.h lib: Remove unnecessary inclusions of asm/semaphore.h kernel: Remove unnecessary inclusions of asm/semaphore.h include: Remove unnecessary inclusions of asm/semaphore.h fs: Remove unnecessary inclusions of asm/semaphore.h drivers: Remove unnecessary inclusions of asm/semaphore.h net: Remove unnecessary inclusions of asm/semaphore.h arch: Remove unnecessary inclusions of asm/semaphore.h
2008-04-19sched, cpuset: customize sched domains, coreHidetoshi Seto
[rebased for sched-devel/latest] - Add a new cpuset file, having levels: sched_relax_domain_level - Modify partition_sched_domains() and build_sched_domains() to take attributes parameter passed from cpuset. - Fill newidle_idx for node domains which currently unused but might be required if sched_relax_domain_level become higher. - We can change the default level by boot option 'relax_domain_level='. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19asm-generic: add node_to_cpumask_ptr macroMike Travis
Create a simple macro to always return a pointer to the node_to_cpumask(node) value. This relies on compiler optimization to remove the extra indirection: #define node_to_cpumask_ptr(v, node) \ cpumask_t _##v = node_to_cpumask(node), *v = &_##v For those systems with a large cpumask size, then a true pointer to the array element can be used: #define node_to_cpumask_ptr(v, node) \ cpumask_t *v = &(node_to_cpumask_map[node]) A node_to_cpumask_ptr_next() macro is provided to access another node_to_cpumask value. The other change is to always include asm-generic/topology.h moving the ifdef CONFIG_NUMA to this same file. Note: there are no references to either of these new macros in this patch, only the definition. Based on 2.6.25-rc5-mm1 # alpha Cc: Richard Henderson <rth@twiddle.net> # fujitsu Cc: David Howells <dhowells@redhat.com> # ia64 Cc: Tony Luck <tony.luck@intel.com> # powerpc Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> # sparc Cc: David S. Miller <davem@davemloft.net> Cc: William L. Irwin <wli@holomorphy.com> # x86 Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-18include: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox
None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they (or some user of them) rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have to fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-18Merge branch 'release' of ↵Linus Torvalds
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: (27 commits) [IA64] kdump: Add crash_save_vmcoreinfo for INIT [IA64] Fix NUMA configuration issue [IA64] Itanium Spec updates [IA64] Untangle sync_icache_dcache() page size determination [IA64] arch/ia64/kernel/: use time_* macros [IA64] remove redundant display of free swap space in show_mem() [IA64] make IOMMU respect the segment boundary limits [IA64] kprobes: kprobe-booster for ia64 [IA64] fix getpid and set_tid_address fast system calls for pid namespaces [IA64] Replace explicit jiffies tests with time_* macros. [IA64] use goto to jump out do/while_each_thread [IA64] Fix unlock ordering in smp_callin [IA64] pgd_offset() constfication. [IA64] kdump: crash.c coding style fix [IA64] kdump: add kdump_on_fatal_mca [IA64] Minimize per_cpu reservations. [IA64] Correct pernodesize calculation. [IA64] Kernel parameter for max number of concurrent global TLB purges [IA64] Multiple outstanding ptc.g instruction support [IA64] Implement smp_call_function_mask for ia64 ...
2008-04-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (58 commits) ide: remove ide_init_default_irq() macro ide: move default IDE ports setup to ide_generic host driver ide: remove obsoleted "idex=noprobe" kernel parameter (take 2) ide: remove needless hwif->irq check from ide_hwif_configure() ide: init hwif->{io_ports,irq} explicitly in legacy VLB host drivers ide: limit legacy VLB host drivers to alpha, x86 and mips cmd640: init hwif->{io_ports,irq} explicitly cmd640: cleanup setup_device_ptrs() ide: add ide-4drives host driver (take 3) ide: remove ppc ifdef from init_ide_data() ide: remove ide_default_io_ctl() macro ide: remove CONFIG_IDE_ARCH_OBSOLETE_INIT ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2) ppc/pmac: remove no longer needed IDE quirk ppc: don't include <linux/ide.h> ppc: remove ppc_ide_md ppc/pplus: remove ppc_ide_md.ide_init_hwif hook ppc/sandpoint: remove ppc_ide_md hooks ppc/lopec: remove ppc_ide_md hooks ppc/mpc8xx: remove ppc_ide_md hooks ...
2008-04-18ide: remove ide_init_default_irq() macroBartlomiej Zolnierkiewicz
* Use ide_default_irq() instead of ide_init_default_irq() in ide_generic host driver (so the correct IRQ is always set regardless of CONFIG_PCI / CONFIG_BLK_DEV_IDEPCI). * Remove no longer needed ide_init_default_irq() macro. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide: remove ide_default_io_ctl() macroBartlomiej Zolnierkiewicz
It is always == '((base) + 0x206)' if CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS=y and it is not needed otherwise (arm, blackfin, parisc, ppc64, sh, sparc[64]). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2)Bartlomiej Zolnierkiewicz
* Add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS to drivers/ide/Kconfig and use it instead of defining IDE_ARCH_OBSOLETE_DEFAULTS in <arch/ide.h>. v2: * Define ide_default_irq() in ide-probe.c/ns87415.c if not already defined and drop defining ide_default_irq() for CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS=n. [ Thanks to Stephen Rothwell and David Miller for noticing the problem. ] Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Miller <davem@davemloft.net> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-17Pull miscellaneous into release branchTony Luck
Conflicts: arch/ia64/kernel/mca.c
2008-04-17Pull nptcg into release branchTony Luck
Conflicts: arch/ia64/mm/tlb.c
2008-04-17Pull kvm-patches into release branchTony Luck
2008-04-17Pull percpureserve into release branchTony Luck
2008-04-17Pull regset into release branchTony Luck
2008-04-17Pull virt-cpu-accounting into release branchTony Luck
2008-04-17Generic semaphore implementationMatthew Wilcox
Semaphores are no longer performance-critical, so a generic C implementation is better for maintainability, debuggability and extensibility. Thanks to Peter Zijlstra for fixing the lockdep warning. Thanks to Harvey Harrison for pointing out that the unlikely() was unnecessary. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
2008-04-11[IA64] Fix NUMA configuration issueZoltan Menyhart
There is a NUMA memory configuration issue in 2.6.24: A 2-node machine of ours has got the following memory layout: Node 0: 0 - 2 Gbytes Node 0: 4 - 8 Gbytes Node 1: 8 - 16 Gbytes Node 0: 16 - 18 Gbytes "efi_memmap_init()" merges the three last ranges into one. "register_active_ranges()" is called as follows: efi_memmap_walk(register_active_ranges, NULL); i.e. once for the 4 - 18 Gbytes range. It picks up the node number from the start address, and registers all the memory for the node #0. "register_active_ranges()" should be called as follows to make sure there is no merged address range at its entry: efi_memmap_walk(filter_memory, register_active_ranges); "filter_memory()" is similar to "filter_rsvd_memory()", but the reserved memory ranges are not filtered out. Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-09[IA64] Itanium Spec updatesRuss Anderson
Updates based on the "Intel® Itanium® Architecture Software Developer's Manual Specification Update October 2007". http://download.intel.com/design/itanium/specupdt/24869911.pdf Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-09[IA64] kprobes: kprobe-booster for ia64Masami Hiramatsu
Add kprobe-booster support on ia64. Kprobe-booster improves the performance of kprobes by eliminating single-step, where possible. Currently, kprobe-booster is implemented on x86 and x86-64. This is an ia64 port. On ia64, kprobe-booster executes a copied bundle directly, instead of single stepping. Bundles which have B or X unit and which may cause an exception (including break) are not executed directly. And also, to prevent hitting break exceptions on the copied bundle, only the hindmost kprobe is executed directly if several kprobes share a bundle and are placed in different slots. Note: set_brl_inst() is used for preparing an instruction buffer(it does not modify any active code), so it does not need any atomic operation. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: bibo,mao <bibo.mao@intel.com> Cc: Rusty Lynch <rusty.lynch@intel.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>