- 26 8月, 2008 1 次提交
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由 Robin Holt 提交于
CONFIG_SFC=m uses topology_core_siblings() which, for ia64, expects cpu_core_map to be exported. It is not. This patch exports the needed symbol. Maintainers note: This really looks like the wrong thing to do ... it would be much better for the kernel to export an API to provide drivers like this with data they need (which in the case of this driver seems to be an estimate of the effective parallelism available on the platform). But x86 has exported this forever ... so go with the flow until such an API is defined. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com> Signed-off-by: NMatthew Wilcox <willy@linux.intel.com> Signed-off-by: NRobin Holt <holt@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 13 8月, 2008 1 次提交
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由 Tony Luck 提交于
ia64 handles per-cpu variables a litle differently from other architectures in that it maps the physical memory allocated for each cpu at a constant virtual address (0xffffffffffff0000). This mapping is not enabled until the architecture specific cpu_init() function is run, which causes problems since some generic code is run before this point. In particular when CONFIG_PRINTK_TIME is enabled, the boot cpu will trap on the access to per-cpu memory at the first printk() call so the boot will fail without the kernel printing anything to the console. Fix this by allocating percpu memory for cpu0 in the kernel data section and doing all initialization to enable percpu access in head.S before calling any generic code. Other cpus must take care not to access per-cpu variables too early, but their code path from start_secondary() to cpu_init() is all in arch/ia64 Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 26 6月, 2008 2 次提交
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由 Jens Axboe 提交于
It's never used and the comments refer to nonatomic and retry interchangably. So get rid of it. Acked-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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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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- 28 5月, 2008 1 次提交
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由 Isaku Yamahata 提交于
define pv_init_ops hooks which represents various initialization hooks for paravirtualized environment. and add hooks. 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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- 30 4月, 2008 1 次提交
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由 Alex Chiang 提交于
Commit 113134fc changed the flow of control when calling PAL_LOGICAL_TO_PHYSICAL and SAL_PHYSICAL_ID_INFO. With the change, if a platform did not implement the latter, a useless printk would appear in the boot log: ia64_sal_pltid failed with -1 So let's check the return code and only printk on a true error, and do not print anything in the unimplemented case. While we're in there, clean up some stylistic issues too. Signed-off-by: NAlex Chiang <achiang@hp.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 Alan D. Brunelle 提交于
One should normally unlock in the reverse order of the lock calls, and in this case there certainly is no reason not to. Signed-off-by: NAlan D. Brunelle <alan.brunelle@hp.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 07 2月, 2008 2 次提交
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由 Adrian Bunk 提交于
Fix the following section mismatch with CONFIG_HOTPLUG=n, CONFIG_HOTPLUG_CPU=y: WARNING: vmlinux.o(.text+0x399a6): Section mismatch: reference to .init.text.5:idle_regs (between 'fork_idle' and 'get_task_mm') Signed-off-by: NAdrian Bunk <bunk@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "Luck, Tony" <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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由 Adrian Bunk 提交于
calibrate_delay() must be __cpuinit, not __{dev,}init. I've verified that this is correct for all users. While doing the latter, I also did the following cleanups: - remove pointless additional prototypes in C files - ensure all users #include <linux/delay.h> This fixes the following section mismatches with CONFIG_HOTPLUG=n, CONFIG_HOTPLUG_CPU=y: WARNING: vmlinux.o(.text+0x1128d): Section mismatch: reference to .init.text.1:calibrate_delay (between 'check_cx686_slop' and 'set_cx86_reorder') WARNING: vmlinux.o(.text+0x25102): Section mismatch: reference to .init.text.1:calibrate_delay (between 'smp_callin' and 'cpu_coregroup_map') Signed-off-by: NAdrian Bunk <bunk@kernel.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Christian Zankel <chris@zankel.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 06 2月, 2008 1 次提交
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由 Jan Beulich 提交于
Neither __cpu_down() nor __cpu_die() are being referenced without CONFIG_HOTPLUG_CPU. Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 30 10月, 2007 1 次提交
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由 Alex Chiang 提交于
Clean up the process for presenting the "physical id" field in /proc/cpuinfo. - remove global smp_num_cpucores, as it is mostly useless - remove check_for_logical_procs(), since we do the same functionality in identify_siblings() - reflow logic in identify_siblings(). If an older CPU does not implement PAL_LOGICAL_TO_PHYSICAL, we may still be able to get useful information from SAL_PHYSICAL_ID_INFO - in identify_siblings(), threads/cores are a property of the CPU, not the platform - remove useless printk's about multi-core / thread capability in identify_siblings(), as that information is readily available in /proc/cpuinfo, and printing for the BSP only adds little value - smp_num_siblings is now meaningful if any CPU in the system supports threads, not just the BSP - expose "physical id" field, even on CPUs that are not multi-core / multi-threaded (as long as we have a valid value). Now we know what sockets Madisons live in too. Signed-off-by: NAlex Chiang <achiang@hp.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 17 10月, 2007 1 次提交
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由 Mike Travis 提交于
Convert cpu_sibling_map from a static array sized by NR_CPUS to a per_cpu variable. This saves sizeof(cpumask_t) * NR unused cpus. Access is mostly from startup and CPU HOTPLUG functions. Signed-off-by: NMike Travis <travis@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Luck, Tony" <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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- 01 9月, 2007 1 次提交
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由 John Keller 提交于
Add additional support for CPU disable on SN platforms. Correctly setup the smp_affinity mask for I/O error IRQs. Restrict the use of the feature to Altix 4000 and 450 systems running with a CPU disable capable PROM, and do not allow disabling of CPU 0. Signed-off-by: NJohn Keller <jpk@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 26 7月, 2007 1 次提交
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由 Tony Luck 提交于
In 741f98fe Sam added full checking across the entire vmlinux image. This flushed out a dozen new section mismatch warnings. Start the whack-a-mole game again to stomp them out. Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 18 7月, 2007 1 次提交
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由 Yasuaki Ishimatsu 提交于
Add mapping tables between irqs and vectors, and its management code. This is necessary for supporting multiple vector domain because 1:1 mapping between irq and vector will be changed to n:1. The irq == vector relationship between irqs and vectors is explicitly remained for percpu interrupts, platform interrupts, isa IRQs and vectors assigned using assign_irq_vector() because some programs might depend on it. And I should consider the following problem. When pci drivers enabled/disabled devices dynamically, its irq number is changed to the different one. Therefore, suspend/resume code may happen problem. To fix this problem, I bound gsi to irq. Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: NYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 24 5月, 2007 1 次提交
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由 Tony Luck 提交于
Continuing the seemingly neverending quest to stomp out "Section mismatch" warnings. Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 12 5月, 2007 1 次提交
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由 Simon Arlott 提交于
Spelling and apostrophe fixes in arch/ia64/. Signed-off-by: NSimon Arlott <simon@fire.lp0.eu> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 09 5月, 2007 1 次提交
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由 Randy Dunlap 提交于
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-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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- 30 3月, 2007 1 次提交
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由 Jack Steiner 提交于
Skip clock calibration if cpu being brought online is exactly the same speed, stepping, etc., as the previous cpu. This significantly reduces the time to boot very large systems. Signed-off-by: NJack Steiner <steiner@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 06 12月, 2006 1 次提交
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由 David Howells 提交于
Fix up arch-specific work items where possible to use the new work_struct and delayed_work structs. Three places that enqueue bits of their stack and then return have been marked with #error as this is not permitted. Signed-Off-By: NDavid Howells <dhowells@redhat.com>
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- 27 9月, 2006 1 次提交
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由 Stephane Eranian 提交于
Add is_multithreading_enabled() to check whether multi-threading is enabled independently of which cpu is currently online Signed-off-by: Nstephane eranian <eranian@hpl.hp.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 04 7月, 2006 1 次提交
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由 Ingo Molnar 提交于
cleanup: remove task_t and convert all the uses to struct task_struct. I introduced it for the scheduler anno and it was a mistake. Conversion was mostly scripted, the result was reviewed and all secondary whitespace and style impact (if any) was fixed up by hand. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 01 7月, 2006 1 次提交
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由 Jörn Engel 提交于
Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 30 6月, 2006 2 次提交
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由 Ingo Molnar 提交于
Cleanup: remove irq_descp() - explicit use of irq_desc[] is shorter and more readable. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ingo Molnar 提交于
This patch-queue improves the generic IRQ layer to be truly generic, by adding various abstractions and features to it, without impacting existing functionality. While the queue can be best described as "fix and improve everything in the generic IRQ layer that we could think of", and thus it consists of many smaller features and lots of cleanups, the one feature that stands out most is the new 'irq chip' abstraction. The irq-chip abstraction is about describing and coding and IRQ controller driver by mapping its raw hardware capabilities [and quirks, if needed] in a straightforward way, without having to think about "IRQ flow" (level/edge/etc.) type of details. This stands in contrast with the current 'irq-type' model of genirq architectures, which 'mixes' raw hardware capabilities with 'flow' details. The patchset supports both types of irq controller designs at once, and converts i386 and x86_64 to the new irq-chip design. As a bonus side-effect of the irq-chip approach, chained interrupt controllers (master/slave PIC constructs, etc.) are now supported by design as well. The end result of this patchset intends to be simpler architecture-level code and more consolidation between architectures. We reused many bits of code and many concepts from Russell King's ARM IRQ layer, the merging of which was one of the motivations for this patchset. This patch: rename desc->handler to desc->chip. Originally i did not want to do this, because it's a big patch. But having both "desc->handler", "desc->handle_irq" and "action->handler" caused a large degree of confusion and made the code appear alot less clean than it truly is. I have also attempted a dual approach as well by introducing a desc->chip alias - but that just wasnt robust enough and broke frequently. So lets get over with this quickly. The conversion was done automatically via scripts and converts all the code in the kernel. This renaming patch is the first one amongst the patches, so that the remaining patches can stay flexible and can be merged and split up without having some big monolithic patch act as a merge barrier. [akpm@osdl.org: build fix] [akpm@osdl.org: another build fix] Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 25 3月, 2006 1 次提交
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由 Fenghua Yu 提交于
IPF SDM 2.2 changes definition of PAL_LOGICAL_TO_PHYSICAL to add proc_number=-1 to get core/thread mapping info on the running processer. Based on this change, we had better to update existing core/thread detection in IA64 kernel correspondingly. The attached patch implements this change. It simplifies detection code and eliminates potential race condition. It also runs a bit faster and has better scalability especially when cores and threads number grows up in one package. Signed-off-by: NFenghua Yu <fenghua.yu@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 15 2月, 2006 1 次提交
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由 Ashok Raj 提交于
Do not set cpu_possible_map for NR_CPUS when ACPI_CONFIG_HOTPLUG_CPU is set. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 06 1月, 2006 1 次提交
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由 Ashok Raj 提交于
here is the BSP removal support for IA64. Its pretty much the same thing that was released a while back, but has your feedback incorporated. - Removed CONFIG_BSP_REMOVE_WORKAROUND and associated cmdline param - Fixed compile issue with sn2/zx1 due to a undefined fix_b0_for_bsp - some formatting nits (whitespace etc) This has been tested on tiger and long back by alex on hp systems as well. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 09 11月, 2005 1 次提交
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由 Nick Piggin 提交于
Run idle threads with preempt disabled. Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()). How did it ever work before? Might fix the CPU hotplugging hang which Nigel Cunningham noted. We think the bug hits if the idle thread is preempted after checking need_resched() and before going to sleep, then the CPU offlined. After calling stop_machine_run, the CPU eventually returns from preemption and into the idle thread and goes to sleep. The CPU will continue executing previous idle and have no chance to call play_dead. By disabling preemption until we are ready to explicitly schedule, this bug is fixed and the idle threads generally become more robust. From: alexs <ashepard@u.washington.edu> PPC build fix From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> MIPS build fix Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NYoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 26 10月, 2005 1 次提交
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由 hawkes@sgi.com 提交于
In arch/ia64 change the explicit use of for-loops and NR_CPUS into the general for_each_cpu() or for_each_online_cpu() constructs, as appropriate. This widens the scope of potential future optimizations of the general constructs, as well as takes advantage of the existing optimizations of first_cpu() and next_cpu(). Signed-off-by: NJohn Hawkes <hawkes@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 07 7月, 2005 1 次提交
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由 Tony Luck 提交于
Jesse Barnes provided the original version of this patch months ago, but other changes kept conflicting with it, so it got deferred. Greg Edwards dug it out of obscurity just over a week ago, and almost immediately another conflicting patch appeared (Bob Picco's memory-less nodes). I've resolved the conflicts and got it running again. CONFIG_SGI_TIOCX is set to "y" in defconfig, which causes a Tiger to not boot (oops in tiocx_init). But that can be resolved later ... get this in now before it gets stale again. Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 26 6月, 2005 2 次提交
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由 Shaohua Li 提交于
Dead CPU notifies online CPU that it's dead using cpu_state variable. After switching to physical cpu hotplug, we forgot setting the variable. This patch fixes it. Currently only __cpu_die uses it. We changed other locations for consistency in case others use it. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Acked-by: NAshok Raj <ashok.raj@intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Zwane Mwaikambo 提交于
(The i386 CPU hotplug patch provides infrastructure for some work which Pavel is doing as well as for ACPI S3 (suspend-to-RAM) work which Li Shaohua <shaohua.li@intel.com> is doing) The following provides i386 architecture support for safely unregistering and registering processors during runtime, updated for the current -mm tree. In order to avoid dumping cpu hotplug code into kernel/irq/* i dropped the cpu_online check in do_IRQ() by modifying fixup_irqs(). The difference being that on cpu offline, fixup_irqs() is called before we clear the cpu from cpu_online_map and a long delay in order to ensure that we never have any queued external interrupts on the APICs. There are additional changes to s390 and ppc64 to account for this change. 1) Add CONFIG_HOTPLUG_CPU 2) disable local APIC timer on dead cpus. 3) Disable preempt around irq balancing to prevent CPUs going down. 4) Print irq stats for all possible cpus. 5) Debugging check for interrupts on offline cpus. 6) Hacky fixup_irqs() to redirect irqs when cpus go off/online. 7) play_dead() for offline cpus to spin inside. 8) Handle offline cpus set in flush_tlb_others(). 9) Grab lock earlier in smp_call_function() to prevent CPUs going down. 10) Implement __cpu_disable() and __cpu_die(). 11) Enable local interrupts in cpu_enable() after fixup_irqs() 12) Don't fiddle with NMI on dead cpu, but leave intact on other cpus. 13) Program IRQ affinity whilst cpu is still in cpu_online_map on offline. Signed-off-by: NZwane Mwaikambo <zwane@linuxpower.ca> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 10 5月, 2005 1 次提交
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由 David Mosberger-Tang 提交于
I noticed this typo when trying to compile a kernel which had CONFIG_HOTPLUG turned off. In that case, __devinit is no longer a no-op and the compiler then detects a section-conflict. Fix by using __devinitdata instead of __devinit. Same patch also submitted by Darren Williams to fix compilation error using sim_defconfig (which has CONFIG_HOTPLUG=n). Signed-off-by: NDavid Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: NDarren Williams <dsw@gelato.unsw.edu.au> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 26 4月, 2005 2 次提交
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由 Suresh Siddha 提交于
Version 3 - rediffed to apply on top of Ashok's hotplug cpu patch. /proc/cpuinfo output in step with x86. This is an updated MC/MT identification patch based on the previous discussions on list. Add the Multi-core and Multi-threading detection for IPF. - Add new core and threading related fields in /proc/cpuinfo. Physical id Core id Thread id Siblings - setup the cpu_core_map and cpu_sibling_map appropriately - Handles Hot plug CPU Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NGordon Jin <gordon.jin@intel.com> Signed-off-by: NRohit Seth <rohit.seth@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 David Mosberger-Tang 提交于
Call cpu_relax() in busy-waiting loops of the ITC-syncing code. Signed-off-by: NDavid Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 23 4月, 2005 1 次提交
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由 Ashok Raj 提交于
This patch is required to support cpu removal for IPF systems. Existing code just fakes the real offline by keeping it run the idle thread, and polling for the bit to re-appear in the cpu_state to get out of the idle loop. For the cpu-offline to work correctly, we need to pass control of this CPU back to SAL so it can continue in the boot-rendez mode. This gives the SAL control to not pick this cpu as the monarch processor for global MCA events, and addition does not wait for this cpu to checkin with SAL for global MCA events as well. The handoff is implemented as documented in SAL specification section 3.2.5.1 "OS_BOOT_RENDEZ to SAL return State" Signed-off-by: NAshok Raj <ashok.raj@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 17 4月, 2005 1 次提交
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由 Linus Torvalds 提交于
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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