- 16 1月, 2009 1 次提交
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由 Tony Luck 提交于
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: NTony Luck <tony.luck@intel.com>
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- 03 1月, 2009 1 次提交
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由 Joerg Roedel 提交于
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: NJoerg Roedel <joerg.roedel@amd.com>
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- 11 11月, 2008 1 次提交
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由 Ingo Molnar 提交于
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: NIngo Molnar <mingo@elte.hu>
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- 07 11月, 2008 1 次提交
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由 Bjorn Helgaas 提交于
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: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 05 11月, 2008 1 次提交
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由 Tony Luck 提交于
Now that all the ia64 mmu pieces are in the tree we can build support into the generic kernel. Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 20 10月, 2008 1 次提交
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由 Matt Helsley 提交于
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: NCedric Le Goater <clg@fr.ibm.com> Signed-off-by: NMatt Helsley <matthltc@us.ibm.com> Acked-by: NSerge E. Hallyn <serue@us.ibm.com> Tested-by: NMatt Helsley <matthltc@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 18 10月, 2008 2 次提交
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由 Fenghua Yu 提交于
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: NFenghua Yu <fenghua.yu@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Isaku Yamahata 提交于
introduce CONFIG_PARAVIRT_GUEST, CONFIG_PARAVIRT for paravirtualized guest. introduce CONFIG_XEN, CONFIG_IA64_XEN_GUEST for xen. Signed-off-by: NAlex Williamson <alex.williamson@hp.com> Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 17 10月, 2008 1 次提交
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由 Jan Beulich 提交于
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: NJan 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: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 07 10月, 2008 1 次提交
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由 Shaohua Li 提交于
Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 05 8月, 2008 2 次提交
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由 Jack Steiner 提交于
Eliminate trailing backquote in IA64_SGI_UV config. Signed-off-by: NJack Steiner <steiner@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Robin Holt 提交于
ia64 has compiled with NR_CPUS=4096 for a couple releases, just forgot to update Kconfig to allow it. Signed-off-by: NRobin Holt <holt@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 18 7月, 2008 1 次提交
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由 Bernhard Walle 提交于
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: NBernhard Walle <bwalle@suse.de> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 26 6月, 2008 1 次提交
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由 Jens Axboe 提交于
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: NJens Axboe <jens.axboe@oracle.com>
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- 15 5月, 2008 1 次提交
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由 Jack Steiner 提交于
This patch adds the basic IA64 machvec infrastructure to support the SGI "UV" platform. Signed-off-by: NJack Steiner <steiner@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 29 4月, 2008 2 次提交
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由 Arthur Kepner 提交于
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: NArthur 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: NMark Nelson <markn@au1.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 FUJITA Tomonori 提交于
iommu_is_span_boundary in lib/iommu-helper.c was exported for PARISC IOMMUs (commit 3715863a). SWIOTLB can use it instead of the homegrown function. Signed-off-by: NFUJITA 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: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 4月, 2008 1 次提交
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由 Xiantao Zhang 提交于
Update the related Makefile and KConfig for kvm build Signed-off-by: NXiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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- 23 4月, 2008 1 次提交
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由 Dean Nelson 提交于
Move XPC and XPNET from arch/ia64/sn/kernel to drivers/misc/sgi-xp. Signed-off-by: NDean Nelson <dcn@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 10 4月, 2008 1 次提交
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由 FUJITA Tomonori 提交于
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: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 05 3月, 2008 2 次提交
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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: NAnanth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jes Sorensen 提交于
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: NJes Sorensen <jes@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 21 2月, 2008 1 次提交
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由 Hidetoshi Seto 提交于
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: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 12 2月, 2008 1 次提交
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由 Tony Luck 提交于
Commit bdc80787 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: NTony Luck <tony.luck@intel.com>
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- 09 2月, 2008 1 次提交
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由 Sam Ravnborg 提交于
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: NSam Ravnborg <sam@ravnborg.org> Acked-by: NRussell King - ARM Linux <linux@arm.linux.org.uk> Acked-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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- 03 2月, 2008 4 次提交
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由 Adrian Bunk 提交于
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: NAdrian Bunk <bunk@kernel.org> Acked-by: NAlan Cox <alan@redhat.com>
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由 Mathieu Desnoyers 提交于
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: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
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由 Mathieu Desnoyers 提交于
Linus: On the per-architecture side, I do think it would be better to *not* have internal architecture knowledge in a generic file, and as such a line like depends on X86_32 || IA64 || PPC || S390 || SPARC64 || X86_64 || AVR32 really shouldn't exist in a file like kernel/Kconfig.instrumentation. It would be much better to do depends on ARCH_SUPPORTS_KPROBES in that generic file, and then architectures that do support it would just have a bool ARCH_SUPPORTS_KPROBES default y in *their* architecture files. That would seem to be much more logical, and is readable both for arch maintainers *and* for people who have no clue - and don't care - about which architecture is supposed to support which interface... Changelog: Actually, I know I gave this as the magic incantation, but now that I see it, I realize that I should have told you to just use config KPROBES_SUPPORT def_bool y instead, which is a bit denser. We seem to use both kinds of syntax for these things, but this is really what "def_bool" is there for... - Use HAVE_KPROBES - Use a select - Yet another update : Moving to HAVE_* now. - Update ARM for kprobes support. Signed-off-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jeff Dike <jdike@addtoit.com> Cc: David Howells <dhowells@redhat.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
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由 Mathieu Desnoyers 提交于
Linus: On the per-architecture side, I do think it would be better to *not* have internal architecture knowledge in a generic file, and as such a line like depends on X86_32 || IA64 || PPC || S390 || SPARC64 || X86_64 || AVR32 really shouldn't exist in a file like kernel/Kconfig.instrumentation. It would be much better to do depends on ARCH_SUPPORTS_KPROBES in that generic file, and then architectures that do support it would just have a bool ARCH_SUPPORTS_KPROBES default y in *their* architecture files. That would seem to be much more logical, and is readable both for arch maintainers *and* for people who have no clue - and don't care - about which architecture is supposed to support which interface... Changelog: Actually, I know I gave this as the magic incantation, but now that I see it, I realize that I should have told you to just use config ARCH_SUPPORTS_KPROBES def_bool y instead, which is a bit denser. We seem to use both kinds of syntax for these things, but this is really what "def_bool" is there for... Changelog : - Moving to HAVE_*. - Add AVR32 oprofile. Signed-off-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
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- 31 1月, 2008 1 次提交
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由 travis@sgi.com 提交于
Change: config ARCH_SETS_UP_PER_CPU_AREA to: config HAVE_SETUP_PER_CPU_AREA Cc: Andi Kleen <ak@suse.de> Cc: Tony Luck <tony.luck@intel.com> Cc: David Miller <davem@davemloft.net> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: linuxppc-dev@ozlabs.org Cc: linux-ia64@vger.kernel.org Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 30 1月, 2008 2 次提交
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由 travis@sgi.com 提交于
The use of the __GENERIC_PERCPU is a bit problematic since arches may want to run their own percpu setup while using the generic percpu definitions. Replace it through a kconfig variable. Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Nick Piggin 提交于
The break_lock data structure and code for spinlocks is quite nasty. Not only does it double the size of a spinlock but it changes locking to a potentially less optimal trylock. Put all of that under CONFIG_GENERIC_LOCKBREAK, and introduce a __raw_spin_is_contended that uses the lock data itself to determine whether there are waiters on the lock, to be used if CONFIG_GENERIC_LOCKBREAK is not set. Rename need_lockbreak to spin_needbreak, make it use spin_is_contended to decouple it from the spinlock implementation, and make it typesafe (rwlocks do not have any need_lockbreak sites -- why do they even get bloated up with that break_lock then?). Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 20 10月, 2007 2 次提交
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由 Matt LaPlante 提交于
Most of these fixes were already submitted for old kernel versions, and were approved, but for some reason they never made it into the releases. Because this is a consolidation of a couple old missed patches, it touches both Kconfigs and documentation texts. Signed-off-by: NMatt LaPlante <kernel1@cyberdogtech.com> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAdrian Bunk <bunk@kernel.org>
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由 Mathieu Desnoyers 提交于
Quoting Randy: "It seems sad that this patch sources Kconfig.marker, a 7-line file, 20-something times. Yes, you (we) don't want to put those 7 lines into 20-something different files, so sourcing is the right thing. However, what you did for avr32 seems more on the right track to me: make _one_ Instrumentation support menu that includes PROFILING, OPROFILE, KPROBES, and MARKERS and then use (source) that in all of the arches." Signed-off-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 17 10月, 2007 4 次提交
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由 Robert P. J. Day 提交于
It makes more sense to make instrumentation support experimental on a case-by-case basis. Signed-off-by: NRobert P. J. Day <rpjday@mindspring.com> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KAMEZAWA Hiroyuki 提交于
Logic. - set all pages in [start,end) as isolated migration-type. by this, all free pages in the range will be not-for-use. - Migrate all LRU pages in the range. - Test all pages in the range's refcnt is zero or not. Todo: - allocate migration destination page from better area. - confirm page_count(page)== 0 && PageReserved(page) page is safe to be freed.. (I don't like this kind of page but.. - Find out pages which cannot be migrated. - more running tests. - Use reclaim for unplugging other memory type area. Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NYasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mel Gorman 提交于
Currently mobility grouping works at the MAX_ORDER_NR_PAGES level. This makes sense for the majority of users where this is also the huge page size. However, on platforms like ia64 where the huge page size is runtime configurable it is desirable to group at a lower order. On x86_64 and occasionally on x86, the hugepage size may not always be MAX_ORDER_NR_PAGES. This patch groups pages together based on the value of HUGETLB_PAGE_ORDER. It uses a compile-time constant if possible and a variable where the huge page size is runtime configurable. It is assumed that grouping should be done at the lowest sensible order and that the user would not want to override this. If this is not true, page_block order could be forced to a variable initialised via a boot-time kernel parameter. One potential issue with this patch is that IA64 now parses hugepagesz with early_param() instead of __setup(). __setup() is called after the memory allocator has been initialised and the pageblock bitmaps already setup. In tests on one IA64 there did not seem to be any problem with using early_param() and in fact may be more correct as it guarantees the parameter is handled before the parsing of hugepages=. Signed-off-by: NMel Gorman <mel@csn.ul.ie> Acked-by: NAndy Whitcroft <apw@shadowen.org> Acked-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Christoph Lameter 提交于
Equip IA64 sparsemem with a virtual memmap. This is similar to the existing CONFIG_VIRTUAL_MEM_MAP functionality for DISCONTIGMEM. It uses a PAGE_SIZE mapping. This is provided as a minimally intrusive solution. We split the 128TB VMALLOC area into two 64TB areas and use one for the virtual memmap. This should replace CONFIG_VIRTUAL_MEM_MAP long term. [apw@shadowen.org: convert to new helper based initialisation] Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndy Whitcroft <apw@shadowen.org> Acked-by: NMel Gorman <mel@csn.ul.ie> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 10月, 2007 1 次提交
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由 Bjorn Helgaas 提交于
This driver for HPQ5001 devices installs a global ACPI OpRegion handler. AML methods can use this OpRegion to call native firmware entry points. ACPI does not define a mechanism for AML methods to call native firmware interfaces such as PAL or SAL. This OpRegion handler adds such a mechanism. After the handler is installed, an AML method can call native firmware by storing the arguments and firmware entry point to specific offsets in the OpRegion. When AML reads the "return value" offset from the OpRegion, this handler loads up the arguments, makes the firmware call, and returns the result. Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NLen Brown <len.brown@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 14 8月, 2007 1 次提交
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由 Satyam Sharma 提交于
arch/ia64/Kconfig failed to include kernel/Kconfig.preempt that meant it did not support PREEMPT_VOLUNTARY and PREEMPT_BKL (inadvertently). This was recently noticed when the newly-added PREEMPT_NOTIFIERS in Kconfig.preempt that was "select"ed from drivers/kvm/Kconfig (therefore) started giving bogus warnings ('select' used by config symbol 'KVM' refers to undefined symbol 'PREEMPT_NOTIFIERS') on ia64 builds. So let's remove the open-coded definition of CONFIG_PREEMPT in arch/ia64/Kconfig and replace it with just including Kconfig.preempt instead, like the other archs do. Signed-off-by: NSatyam Sharma <satyam@infradead.org> Signed-off-by: NTony Luck <tony.luck@intel.com>
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