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* arch/ia64/kernel/iosapic: missing test after ioremap()Roel Kluin2009-08-111-0/+4
| | | | | | | Missing test after ioremap() Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Fenghua Yu <fenghua.yu@intel.com>
* [IA64] remove obsolete hw_interrupt_typeThomas Gleixner2009-06-151-1/+1
| | | | | | | | | | | | | | | | | | The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup Convert the last remaining users to struct irq_chip and remove the define. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] remove obsolete irq_desc_t typedefThomas Gleixner2009-06-151-3/+3
| | | | | | | | | | | | | | | | | The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup Convert the last remaining users and remove the typedef. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] remove obsolete no_irq_typeThomas Gleixner2009-06-151-1/+1
| | | | | | | | | | | | | | | | | The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup convert the last remaining users to no_irq_chip Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* irq: change ->set_affinity() to return statusYinghai Lu2009-04-281-4/+6
| | | | | | | | | | | | | | | | | | | according to Ingo, change set_affinity() in irq_chip should return int, because that way we can handle failure cases in a much cleaner way, in the genirq layer. v2: fix two typos [ Impact: extend API ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: linux-arch@vger.kernel.org LKML-Reference: <49F654E9.4070809@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'x86/urgent' into x86/patIngo Molnar2009-03-011-1/+1
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| * [IA64] Don't go beyond iosapic_intr_info's arraysizeRoel Kluin2009-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | vi arch/ia64/kernel/iosapic.c +142 static struct iosapic_intr_info { ... } iosapic_intr_info[NR_IRQS]; But at line 510 we have: for (i = 0; i <= NR_IRQS; i++) { s/<=/</ Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | irq: update all arches for new irq_descMike Travis2009-01-121-1/+1
|/ | | | | | | | | Impact: cleanup, update to new cpumask API Irq_desc.affinity and irq_desc.pending_mask are now cpumask_var_t's so access to them should be using the new cpumask API. Signed-off-by: Mike Travis <travis@sgi.com>
* cpumask: IA64: Introduce cpumask_of_{node,pcibus} to replace ↵Rusty Russell2008-12-261-12/+11
| | | | | | | | | | | | | | | | | | | {node,pcibus}_to_cpumask Impact: New APIs The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these return a pointer to a struct cpumask. Part of removing cpumasks from the stack. We can also use the new for_each_cpu_and() to avoid a temporary cpumask, and a gratuitous test in sn_topology_show. (Includes fix from KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Tony Luck <tony.luck@intel.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
* cpumask: make irq_set_affinity() take a const struct cpumaskRusty Russell2008-12-131-6/+6
| | | | | | | | | | | | | | | | | | | | | | | Impact: change existing irq_chip API Not much point with gentle transition here: the struct irq_chip's setaffinity method signature needs to change. Fortunately, not widely used code, but hits a few architectures. Note: In irq_select_affinity() I save a temporary in by mangling irq_desc[irq].affinity directly. Ingo, does this break anything? (Folded in fix from KOSAKI Motohiro) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Acked-by: Ingo Molnar <mingo@redhat.com> Cc: ralf@linux-mips.org Cc: grundler@parisc-linux.org Cc: jeremy@xensource.com Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
* [IA64] Move include/asm-ia64 to arch/ia64/include/asmTony Luck2008-08-011-1/+1
| | | | | | | | | | | | | | | After moving the the include files there were a few clean-ups: 1) Some files used #include <asm-ia64/xyz.h>, changed to <asm/xyz.h> 2) Some comments alerted maintainers to look at various header files to make matching updates if certain code were to be changed. Updated these comments to use the new include paths. 3) Some header files mentioned their own names in initial comments. Just deleted these self references. Signed-off-by: Tony Luck <tony.luck@intel.com>
* Pull pvops into release branchTony Luck2008-07-171-16/+29
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| * [IA64] pvops: add hooks, pv_iosapic_ops, to paravirtualize iosapic.Isaku Yamahata2008-05-271-16/+29
| | | | | | | | | | | | | | | | | | | | add hooks to paravirtualize iosapic which is a real hardware resource. On virtualized environment it may be replaced something virtualized friendly. Define pv_iosapic_ops and add the hooks. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] Eliminate NULL test after alloc_bootmem in iosapic_alloc_rte()Julia Lawall2008-06-241-2/+0
|/ | | | | | | | | As noted by Akinobu Mita alloc_bootmem and related functions never return NULL and always return a zeroed region of memory. Thus a NULL test or memset after calls to these functions is unnecessary. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] remove remaining __FUNCTION__ occurrencesHarvey Harrison2008-03-061-12/+12
| | | | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Long lines have been kept where they exist, some small spacing changes have been done. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix irq migration in multiple vector domainKenji Kaneshige2008-03-041-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the problem that the following error message is sometimes displayed at irq migration when vector domain is enabled. "Unexpected interrupt vector %d on CPU %d is not mapped to any IRQ!" The cause of this problem is an interrupt is sent to the previous target CPU after cleaning up vector to irq mapping table. To clean up vector to irq map on the previous target CPU safty, change the irq migration in multiple vector domain as follows. The original idea is from x86 interrupt management code. - Delay vector to irq table cleanup until the interrupts are sent to new target CPUs. By this, it is ensured that target CPU is completely changed on the interrupt controller side. - Even after the interrupts are sent to new target CPUs, there can be pended interrupts remaining on the previous target CPU. So we need to delay clearning up vector to irq table until the pended interrupt is handled. For this, send IPI to the previous target CPU with lower priority vector and clean up vector to irq table in its handler. This patch affects only to irq migration code with multiple vector domain is enabled. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix iosapic interrupt delivery mode for CPEKenji Kaneshige2007-12-071-1/+1
| | | | | | | | | | If "CPEI Processor Override" bit is not set in "Platform Interrupt Source Flags" in "Platform Interrupt Sources Structure" in ACPI MADT, the target processor of CPEI is restricted to a specific CPU. Because of this, the delivery mode for CPEI should be IOSAPIC_FIXED. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] iosapic cleanupSimon Horman2007-12-071-16/+3
| | | | | | | Make some IOSAPIC functions static and remove one that is unused. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix IOSAPIC delivery mode settingKenji Kaneshige2007-11-091-3/+15
| | | | | | | | | Fix the problem that redirect hit bit in I/O SAPIC RTE is set even when it must be disabled (e.g. nointroute boot option is set, CPU hotplug is enabled or percpu vector is enabled). Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix wrong access to irq_desc[] in iosapic_register_intr().Kenji Kaneshige2007-08-011-2/+3
| | | | | | | | In error path we must unlock irq_desc[irq].lock before we change 'irq'. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix registered interrupt checkKenji Kaneshige2007-07-301-6/+6
| | | | | | | | | | | | | | Fix the problem that interrupts are not initialized correctly at PCI hotplug or driver reloading time. By vector domain change, the iosapic_rte_info structure was changed to be on the iosapic_intr_info[irq].rtes list even after the interrupts are unregistered. So iosapic_intr_info[irq].rtes list must not be checked to see if there are registered interrupts (RTEs) on the irq. We must check iosapic_intr_info[irq].count counter instead. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] fix a few section mismatch warningsSam Ravnborg2007-07-301-1/+1
| | | | | | | | | | | Fix the following section mismatch warnings: WARNING: vmlinux.o(.text+0x41902): Section mismatch: reference to .init.text:__alloc_bootmem (between 'ia64_mca_cpu_init' and 'ia64_do_tlb_purge') WARNING: vmlinux.o(.text+0x49222): Section mismatch: reference to .init.text:__alloc_bootmem (between 'register_intr' and 'iosapic_register_intr') WARNING: vmlinux.o(.text+0x62beb2): Section mismatch: reference to .init.text:__alloc_bootmem_node (between 'hubdev_init_node' and 'cnodeid_get_geoid') Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Delete iosapic_free_rte()Yasuaki Ishimatsu2007-07-191-8/+0
| | | | | | | | | | | | | | | | | | | > arch/ia64/kernel/iosapic.c:597: warning: 'iosapic_free_rte' defined but not used > > This isn't spurious, the only call to iosapic_free_rte() has been removed, but there > is still a call to iosapic_alloc_rte() ... which means we must have a memory leak. I did it on purpose (and gave the warning a miss...) and I consider iosapic_free_rte() is no longer needed. I decided to remain iosapic_rte_info to keep gsi-to-irq binding after device disable. Indeed it needs some extra memory, but it is only "sizeof(iosapic_rte_info) * <the number of removed devices>" bytes and has no memory leak becasue re-enabled devices use the iosapic_rte_info which they used before disabling. Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Support irq migration across domainYasuaki Ishimatsu2007-07-171-3/+17
| | | | | | | | Add support for IRQ migration across vector domain. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Add support for vector domainYasuaki Ishimatsu2007-07-171-5/+8
| | | | | | | | | | Add fundamental support for multiple vector domain. There still exists only one vector domain even with this patch. IRQ migration across domain is not supported yet by this patch. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Add mapping table between irq and vectorYasuaki Ishimatsu2007-07-171-26/+35
| | | | | | | | | | | | | | | | | | | | | | | 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: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Check if irq is sharableYasuaki Ishimatsu2007-07-171-2/+3
| | | | | | | | | Need to check if irq is sharable amoung handlers when searching sharable IOSAPIC irq. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix invalid irq vector assumption for iosapicYasuaki Ishimatsu2007-07-171-136/+122
| | | | | | | | | | | | | | | | Many of IOSAPIC codes depends on the flollowing assumptions, but these would become invalid when multiple vector domain will be supported in the future. - 1:1 mapping between IRQ and vector - IRQ == vector To fix those invalid assumptions, this patch changes iosapic_intr_info[] to be indexed by irq number instead of vector. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Use dynamic irq for iosapic interruptsYasuaki Ishimatsu2007-07-171-24/+15
| | | | | | | | Use create_irq()/destroy_irq() for iosapic interrupts. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Use per iosapic lock for indirect iosapic register accessYasuaki Ishimatsu2007-07-171-28/+29
| | | | | | | | | Use per-iosapic lock for indirect iosapic register access. It reduces lock contention. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Cleanup lock order in iosapic_register_intrYasuaki Ishimatsu2007-07-171-30/+20
| | | | | | | | | Cleanup order of irq_desc.lock and iosapic_lock in iosapic_register_intr() and iosapic_unregister_intr(). Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Remove duplicated members in iosapic_rte_infoYasuaki Ishimatsu2007-07-171-36/+24
| | | | | | | | | Remove duplicated members in iosapic_rte_info in iosapic.c. This patch has no functional changes. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Remove block structure for locking in iosapic.cYasuaki Ishimatsu2007-07-171-166/+135
| | | | | | | | | Remove unnecessary indent between spin_lock() and spin_unlock() in iosapic.c. This has no functional changes. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds2007-05-091-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] wire up pselect, ppoll [IA64] Add TIF_RESTORE_SIGMASK [IA64] unwind did not work for processes born with CLONE_STOPPED [IA64] Optional method to purge the TLB on SN systems [IA64] SPIN_LOCK_UNLOCKED macro cleanup in arch/ia64 [IA64-SN2][KJ] mmtimer.c-kzalloc [IA64] fix stack alignment for ia32 signal handlers [IA64] - Altix: hotplug after intr redirect can crash system [IA64] save and restore cpus_allowed in cpu_idle_wait [IA64] Removal of percpu TR cleanup in kexec code [IA64] Fix some section mismatch errors
| * [IA64] Fix some section mismatch errorsTony Luck2007-05-071-1/+1
| | | | | | | | | | | | | | | | | | Section mismatch: reference to ... .init.text:prefill_possible_map from .text between 'setup_per_cpu_areas' and 'cpu_init' .init.text:iosapic_override_isa_irq from .text between 'iosapic_init' and 'iosapic_remove' Signed-off-by: Tony Luck <tony.luck@intel.com>
* | header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-081-1/+0
|/ | | | | | | | | | | | 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: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] fix NULL pointer in ia64/irq_chip-mask/unmask functionKAMEZAWA Hiroyuki2007-03-071-2/+6
| | | | | | | | | | | | | This patch fixes boot failure because irq_desc->mask() is NULL. - Added mask/unmask functions to ia64's irq desc function table. - rename hw_interrupt_type to irq_chip. hw_interrupt_type is old name. - Tony: Added same change to arch/ia64/sn/kernel/irq.c as pointed out by Eric Biederman ... mask/unmask functions there can be no-op. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Clear IRQ affinity when unregisteredAlex Williamson2007-02-051-0/+5
| | | | | | | | | | | | | | | | | | | | When we offline a CPU, migrate_irqs() tries to determine whether the affinity bits of the IRQ descriptor match any of the remaining online CPUs. If not, it fixes up the interrupt to point somewhere else. Unfortunately, if an IRQ is unregistered the IRQ descriptor may still have affinity to the CPU being offlined, but the no_irq_chip handler doesn't provide a set_affinity function. This causes us to hit the WARN_ON in migrate_irqs(). The easiest solution seems to be setting all the bits in the affinity mask when the last interrupt is removed from the vector. I hit this on an older kernel with Xen/ia64 using driver domains (so it probably needs more testing on upstream). Xen essentially uses the bind/unbind interface in sysfs to unregister a device from a driver and thus unregister the interrupt. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] IA64 Kexec/kdumpZou Nan hai2006-12-071-0/+21
| | | | | | | | | | | | | | | Changes and updates. 1. Remove fake rendz path and related code according to discuss with Khalid Aziz. 2. fc.i offset fix in relocate_kernel.S. 3. iospic shutdown code eoi and mask race fix from Fujitsu. 4. Warm boot hook in machine_kexec to SN SAL code from Jack Steiner. 5. Send slave to SAL slave loop patch from Jay Lan. 6. Kdump on non-recoverable MCA event patch from Jay Lan 7. Use CTL_UNNUMBERED in kdump_on_init sysctl. Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] typename -> name conversionIngo Molnar2006-11-161-2/+2
| | | | | | | | convert irq chip typename -> name. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] irqs: use `name' not `typename'Andrew Morton2006-11-161-1/+1
| | | | | | | `typename' is going away and is usually uninitialised anwyay. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] genirq: cleanup: remove irq_descp()Ingo Molnar2006-06-291-7/+7
| | | | | | | | | | Cleanup: remove irq_descp() - explicit use of irq_desc[] is shorter and more readable. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] genirq: rename desc->handler to desc->chipIngo Molnar2006-06-291-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [IA64] fix broken irq affinityChen, Kenneth W2006-05-171-2/+2
| | | | | | | | When CONFIG_PCI_MSI is set, move_irq() is an empty function, causing grief when sys admin tries to bind interrupt to CPU. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] simplify some condition checks in iosapic_check_gsi_rangeSatoru Takeuchi2006-03-281-4/+1
| | | | | | | | | Some condition checks on iosapic_check_gsi_range() can be omitted because always `base <= end' is assured. This patch simplifies those checks. Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] correct some messages and fixes some minor thingsSatoru Takeuchi2006-03-281-99/+161
| | | | | | | | | This patch corrects some wrong comments and a printk message. It also fixes some minor things, and makes all lines fit in 80 columns. Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix UP build with BSP removal support.Ashok Raj2006-01-191-2/+2
| | | | | | | | Causes undefined force_cpei_retarget defined in arch/ia64/kernel/smpboot.c Push the unneeded code inside #ifdef CONFIG_HOTPLUG_CPU. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] support for cpu0 removalAshok Raj2006-01-051-0/+6
| | | | | | | | | | | | | | 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: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Manual merge fix for 3 filesTony Luck2005-09-081-8/+14
|\ | | | | | | | | | | | | | | arch/ia64/Kconfig arch/ia64/kernel/acpi.c include/asm-ia64/irq.h Signed-off-by: Tony Luck <tony.luck@intel.com>
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