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2006-02-02[IA64-SGI] fix smp_affinity redirection when using CONFIG_PCI_MSIMark Maule
Redirecting interrupts using smp_affinity on altix does not work on kernels built with CONFIG_PCI_MSI. The problem is that move_irq() turns into a noop if MSI is built in. This patch calls move_native_irq() instead of move_irq() to get around that. Signed-off-by: Mark Maule <maule@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-02-02Pull update-tlbflush-sn into release branchTony Luck
2006-02-01Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
2006-01-26[IA64-SGI] Update TLB flushing code for SN platformJack Steiner
This patch finishes support for SHUB2 (the new chipset). Most of the changes are performance related. A few changes are workarounds for "interesting" chipset features. Some temporary debugging code has also been deleted. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-26[IA64-SGI] Add PROM feature set for device flush listPrarit Bhargava
Introduce PRF_DEVICE_FLUSH_LIST flag for older PROMs. Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-26[PATCH] drivers/sn/ must be entered for CONFIG_SGI_IOC3Jes Sorensen
Actually I think this is more appropriate so we don't end up with 17 cases that add drivers/sn to the build lib. Include drivers/sn when CONFIG_IA64_SGI_SN2 or CONFIG_IA64_GENERIC is enabled. Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-26[IA64-SGI] Recursive flags do not work for selective buildsKeith Owens
arch/ia64/sn/Makefile sets CPPFLAGS, expecting that setting to propogate to all the subdirectories. For a normal build with its recursive descent it does work, but doing a selective build like 'make arch/ia64/sn/kernel/io_init.i' does not do a recursive descent, it goes directly to arch/ia64/sn/kernel/Makefile so the flags do not get set. To support selective builds, set the flags in all the subordinate Makefiles. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-24[IA64-SGI] XPC remove unnecessary GFP_DMA flagJes Sorensen
Remove the GFP_DMA flag from XPC kmalloc() calls. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-24[ACPI] merge 3549 4320 4485 4588 4980 5483 5651 acpica asus fops pnpacpi ↵Len Brown
branches into release Signed-off-by: Len Brown <len.brown@intel.com>
2006-01-24[IA64] Scaling fix for simultaneous unaligned accessesJack Steiner
Eliminate a hot shared cacheline that occurs if multiple cpus are taking unaligned exceptions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-24[IA64-SGI] sn_dma_alloc_coherent should use gfp flagsTakashi Iwai
Takashi helped us track down a bad page state bug we thought was coming from alsa. It turns out we weren't paying attention to the gfp flags that were passed in to sn_dma_alloc_coherent(). From: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Edwards <edwardsg@sgi.com> Signed-off-by: Mark Maule <maule@sgi.com> Signed-off-by: Jes Sorensen <jes@sgi.com>
2006-01-24[IA64] Set the correct default OS status in the MCA handlerKeith Owens
sos->os_status is set to a default value of IA64_MCA_COLD_BOOT for an MCA, but then is incorrectly overwritten with IA64_MCA_SAME_CONTEXT (0). This makes SAL think that all MCAs have been recovered. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-19Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
2006-01-19[IA64] eliminate softlockup warningJohn Hawkes
Fix an unnecessary softlockup watchdog warning in the ia64 uncached_build_memmap() that occurs occasionally at 256p and always at 512p. The problem occurs at boot time. Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-19[IA64] sem2mutex: arch/ia64/kernel/perfmon.cJes Sorensen
Migrate perfmon from using an old semaphore to a completion handler. Signed-off-by: Jes Sorensen <jes@sgi.com> 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>
2006-01-19[IA64] sem2mutex: arch/ia64/ia32/sys_ia32.cJes Sorensen
Migrate arch/ia64/ia32/sys_ia32 to using a mutex for mmap protection. Signed-off-by: Jes Sorensen <jes@sgi.com> 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>
2006-01-18[PATCH] e1000: Added disable packet split capabilityJesse Brandeburg
Adds the ability to disability packet split at compile time and use the legacy receive path on PCI express hardware. Made this a CONFIG option and modified the Kconfig, to reflect the new option. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17[IA64-SGI] sn2 mutex conversionJes Sorensen
Migrate sn2 code to use mutex and completion events rather than semaphores. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-17[IA64-SGI] pass segment# on SN_SAL_IOIF_SLOT_{DIS,EN}ABLE callsMike Habeck
Bugfix... the altix SN_SAL_IOIF_SLOT_ENABLE & SN_SAL_IOIF_SLOT_DISABLE SAL calls need to pass the segment# down Signed-off-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-17[IA64-SGI] Older PROM WAR for device flush codePrarit Bhargava
Work-around to temporarily support older PROMs with new flush device code. This code allows systems running older PROMs to continue to run on the new kernel base until a new official PROM is released. Signed-off-by: Prarit Bhargava <prarit@sgi.com> Acked-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-16Pull perfmon-montecito into release branchTony Luck
2006-01-16[IA64] Cleanup of arch/ia64/sn and include/asm-ia64/snPrarit Bhargava
Replace uintX_t declarations with uX declarations. Replace intX_t declarations with sX declarations. Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-16[IA64] Stop multiple pci_claim_resource() call for the same resourceKenji Kaneshige
This patch fixes the bug that pci_claim_resource() is called multiple times for the same P2P bridge's resource structures if P2P bridges require their own PCI I/O resources. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-16[IA64] Simple memory hot-add for ia64.Yasunori Goto
First step to memory hotplug for ia64 (add only, all new memory is added to node 0, does not use ZONE_EASY_RECLAIM yet). Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-16[IA64] Perfmon for MontecitoStephane Eranian
Add Montecito PMU description table for perfmon2 Signed-off-by: Stephane Eranian <eranian@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-14[PATCH] Altix: ioc3 serial supportPatrick Gefre
Add driver support for a 2 port PCI IOC3-based serial card on Altix boxes: This is a re-submission. On the original submission I was asked to organize the code so that the MIPS ioc3 ethernet and serial parts could be used with this driver. Stanislaw Skowronek was kind enough to provide the shim layer for this - thanks Stanislaw. This patch includes the shim layer and the Altix PCI ioc3 serial driver. The MIPS merged ioc3 ethernet and serial support is forthcoming. Signed-off-by: Patrick Gefre <pfg@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-14Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
2006-01-14[PATCH] remove unused tmp_buf_sem'sAdrian Bunk
tmp_buf_sem sems to be a common name for something completely unused... Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> ("usb portion") Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-13[IA64] build broken for ia64 simserial.cAndreas Schwab
TTY layer buffering revamp broke ia64 in commit 33f0f88f1c51ae5c2d593d26960c760ea154c2e2 CC arch/ia64/hp/sim/simserial.o arch/ia64/hp/sim/simserial.c: In function `receive_chars': arch/ia64/hp/sim/simserial.c:170: error: structure has no member named `flip' ... and so on ... make[1]: *** [arch/ia64/hp/sim/simserial.o] Error 1 Patch from Andreas Schwab. Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64] prevent accidental modification of args in jprobe handlerZhang Yanmin
When jprobe is hit, the function parameters of the original function should be saved before jprobe handler is executed, and restored it after jprobe handler is executed, because jprobe handler might change the register values due to tail call optimization by the gcc. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64] Add hotplug cpu to salinfo.c, replace semaphore with mutexKeith Owens
Add hotplug cpu support to salinfo.c. The cpu_event field is a cpumask so use the cpu_* macros consistently, replacing the existing mixture of cpu_* and *_bit macros. Instead of counting the number of outstanding events in a semaphore and trying to track that count over user space context, interrupt context, non-maskable interrupt context and cpu hotplug, replace the semaphore with a test for "any bits set" combined with a mutex. Modify the locking to make the test for "work to do" an atomic operation. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64] Handle debug traps in fsys modeJason Uhlenkott
We need to handle debug traps in fsys mode non-fatally. They can happen now that we have fsyscalls which contain probe instructions. Signed-off-by: Jason Uhlenkott <jasonuhl@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] Fix sn_flush_device_kernel & spinlock initializationPrarit Bhargava
This patch separates the sn_flush_device_list struct into kernel and common (both kernel and PROM accessible) structures. As it was, if the size of a spinlock_t changed (due to additional CONFIG options, etc.) the sal call which populated the sn_flush_device_list structs would erroneously write data (and cause memory corruption and/or a panic). This patch does the following: 1. Removes sn_flush_device_list and adds sn_flush_device_common and sn_flush_device_kernel. 2. Adds a new SAL call to populate a sn_flush_device_common struct per device, not per widget as previously done. 3. Correctly initializes each device's sn_flush_device_kernel spinlock_t struct (before it was only doing each widget's first device). Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64] Hole in IA64 TLB flushing from system threadsJack Steiner
I originally thought this was an bug only in the SN code, but I think I also see a hole in the generic IA64 tlb code. (Separate patch was sent for the SN problem). It looks like there is a bug in the TLB flushing code. During context switch, kernel threads (kswapd, for example) inherit the mm of the task that was previously running on the cpu. Normally, this is ok because the previous context is still loaded into the RR registers. However, if the owner of the mm migrates to another cpu, changes it's context number, and references a page before kswapd issues a tlb_purge for that same page, the purge will be done with a stale context number (& RR registers). Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] Altix BTE error handling fixesRuss Anderson
Altix (shub2) pushes the BTE clean-up into SAL. This patch correctly interfaces with the now implemented SAL call. It also fixes a bug when delaying clean-up to allow busy BTEs to complete (or error out). Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64] Fix conversion of pal_min_state physical addressFrancois Wellenrieter
On return from INIT handler we must convert the address of the minstate area from a kernel virtual uncached address (0xC...) to physical uncached (0x8...). A typo (or thinko?) in the code converted to physical cached. Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[PATCH] Add tiocx bus_type probe/remove methodsRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-13[IA64-SGI] move xpc.h to include/asm-ia64/sn (cleanup)Dean Nelson
Cleanup a few items after moving xpc.h from arch/ia64/sn/kernel to include/asm-ia64/sn. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] move xpc.h to include/asm-ia64/snDean Nelson
Move xpc.h from arch/ia64/sn/kernel to include/asm-ia64/sn without change. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] move xpc_system_reboot()Dean Nelson
Move xpc_system_reboot() to be closer to the file it calls for readability reasons (which are indeed subjective). Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] ignoring loss of heartbeat while XPC is in kdebugDean Nelson
Allow for the loss of heartbeat while in kdebug to be ignored by remote partitions. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] XPC and unregistering from notifier listsDean Nelson
Only unregister from notifier lists if XPC is unloading. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] cleanup XPC disengage related messagesDean Nelson
Cleanup the XPC disengage related messages that are printed to the log. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64-SGI] ensure XPC disengage request is processedDean Nelson
This patch fixes a problem in XPC disengage processing whereby it was not seeing the request to disengage from a remote partition, so the disengage wasn't happening. The disengagement is suppose to transpire during the time a XPC channel is disconnecting, and should be completed before the channel is declared to be disconnected. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-13[IA64] Add stub entry to fsys.S for sys_migrate_pagesTony Luck
When this new syscall was added to ia64 in commit 39743889aaf76725152f16aa90ca3c45f6d52da3 fsys.S was forgotten. Add a ".data8 0" there to keep it in step. [Reported by Stephane Eranian] Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-01-12[PATCH] ia64: task_pt_regs()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12[PATCH] ia64: task_thread_info()Al Viro
on ia64 thread_info is at the constant offset from task_struct and stack is embedded into the same beast. Set __HAVE_THREAD_FUNCTIONS, made task_thread_info() just add a constant. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12[PATCH] scheduler cache-hot-autodetectakpm@osdl.org
) From: Ingo Molnar <mingo@elte.hu> This is the latest version of the scheduler cache-hot-auto-tune patch. The first problem was that detection time scaled with O(N^2), which is unacceptable on larger SMP and NUMA systems. To solve this: - I've added a 'domain distance' function, which is used to cache measurement results. Each distance is only measured once. This means that e.g. on NUMA distances of 0, 1 and 2 might be measured, on HT distances 0 and 1, and on SMP distance 0 is measured. The code walks the domain tree to determine the distance, so it automatically follows whatever hierarchy an architecture sets up. This cuts down on the boot time significantly and removes the O(N^2) limit. The only assumption is that migration costs can be expressed as a function of domain distance - this covers the overwhelming majority of existing systems, and is a good guess even for more assymetric systems. [ People hacking systems that have assymetries that break this assumption (e.g. different CPU speeds) should experiment a bit with the cpu_distance() function. Adding a ->migration_distance factor to the domain structure would be one possible solution - but lets first see the problem systems, if they exist at all. Lets not overdesign. ] Another problem was that only a single cache-size was used for measuring the cost of migration, and most architectures didnt set that variable up. Furthermore, a single cache-size does not fit NUMA hierarchies with L3 caches and does not fit HT setups, where different CPUs will often have different 'effective cache sizes'. To solve this problem: - Instead of relying on a single cache-size provided by the platform and sticking to it, the code now auto-detects the 'effective migration cost' between two measured CPUs, via iterating through a wide range of cachesizes. The code searches for the maximum migration cost, which occurs when the working set of the test-workload falls just below the 'effective cache size'. I.e. real-life optimized search is done for the maximum migration cost, between two real CPUs. This, amongst other things, has the positive effect hat if e.g. two CPUs share a L2/L3 cache, a different (and accurate) migration cost will be found than between two CPUs on the same system that dont share any caches. (The reliable measurement of migration costs is tricky - see the source for details.) Furthermore i've added various boot-time options to override/tune migration behavior. Firstly, there's a blanket override for autodetection: migration_cost=1000,2000,3000 will override the depth 0/1/2 values with 1msec/2msec/3msec values. Secondly, there's a global factor that can be used to increase (or decrease) the autodetected values: migration_factor=120 will increase the autodetected values by 20%. This option is useful to tune things in a workload-dependent way - e.g. if a workload is cache-insensitive then CPU utilization can be maximized by specifying migration_factor=0. I've tested the autodetection code quite extensively on x86, on 3 P3/Xeon/2MB, and the autodetected values look pretty good: Dual Celeron (128K L2 cache): --------------------- migration cost matrix (max_cache_size: 131072, cpu: 467 MHz): --------------------- [00] [01] [00]: - 1.7(1) [01]: 1.7(1) - --------------------- cacheflush times [2]: 0.0 (0) 1.7 (1784008) --------------------- Here the slow memory subsystem dominates system performance, and even though caches are small, the migration cost is 1.7 msecs. Dual HT P4 (512K L2 cache): --------------------- migration cost matrix (max_cache_size: 524288, cpu: 2379 MHz): --------------------- [00] [01] [02] [03] [00]: - 0.4(1) 0.0(0) 0.4(1) [01]: 0.4(1) - 0.4(1) 0.0(0) [02]: 0.0(0) 0.4(1) - 0.4(1) [03]: 0.4(1) 0.0(0) 0.4(1) - --------------------- cacheflush times [2]: 0.0 (33900) 0.4 (448514) --------------------- Here it can be seen that there is no migration cost between two HT siblings (CPU#0/2 and CPU#1/3 are separate physical CPUs). A fast memory system makes inter-physical-CPU migration pretty cheap: 0.4 msecs. 8-way P3/Xeon [2MB L2 cache]: --------------------- migration cost matrix (max_cache_size: 2097152, cpu: 700 MHz): --------------------- [00] [01] [02] [03] [04] [05] [06] [07] [00]: - 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) [01]: 19.2(1) - 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) [02]: 19.2(1) 19.2(1) - 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) [03]: 19.2(1) 19.2(1) 19.2(1) - 19.2(1) 19.2(1) 19.2(1) 19.2(1) [04]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) - 19.2(1) 19.2(1) 19.2(1) [05]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) - 19.2(1) 19.2(1) [06]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) - 19.2(1) [07]: 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) 19.2(1) - --------------------- cacheflush times [2]: 0.0 (0) 19.2 (19281756) --------------------- This one has huge caches and a relatively slow memory subsystem - so the migration cost is 19 msecs. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Cc: <wilder@us.ibm.com> Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12[PATCH] sched: add cacheflush() asmIngo Molnar
Add per-arch sched_cacheflush() which is a write-back cacheflush used by the migration-cost calibration code at bootup time. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] capable/capability.h (arch/)Randy Dunlap
arch: Use <linux/capability.h> where capable() is used. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>