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* [IA64] sysctl option to silence unaligned trap warningsJes Sorensen2006-02-28
| | | | | | | | | | | | Allow sysadmin to disable all warnings about userland apps making unaligned accesses by using: # echo 1 > /proc/sys/kernel/ignore-unaligned-usertrap Rather than having to use prctl on a process by process basis. Default behaivour leaves the warnings enabled. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] cleanup in fsys.SKen Chen2006-02-28
| | | | | | | | | beautify coding style for zeroing end of fsyscall_table entries. Remove misleading __NR_syscall_last and add more comments. Drop (now unneeded) "guard against failure to increase NR_syscalls" Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] refresh default config filesTony Luck2006-02-27
| | | | | | Bring all ia64 config files up to date Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] die_if_kernel() can returnTony Luck2006-02-27
| | | | | | | | | | arch/ia64/kernel/unaligned.c erroneously marked die_if_kernel() with a "noreturn" attribute ... which is silly (it returns whenever the argument regs say that the fault happened in user mode, as one might expect given the "if_kernel" part of its name!). Thanks to Alan and Gareth for pointing this out. Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] revert export sn_pcidev_info_getChristoph Hellwig2006-02-27
| | | | | | | Christoph Hellwig <hch@infradead.org> pointed that there are no in-tree uses of this. So revert 9c65cb9be62ac4993a5b392304b82e4f04f010fd Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix pcibios_setupMatthew Wilcox2006-02-27
| | | | | | | | | | pcibios_setup() should return NULL if it handled a parameter. Since ia64 handles no parameters, it should return the string that was passed in, not NULL. This brings ia64 into line with all other architectures that handle no parameters. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Delete a redundant instruction in unaligned_accessZhang, Yanmin2006-02-27
| | | | | | | | | unaligned_access does fetch cr.ipsr, then calls dispatch_unaligned_handler, but dispatch_unaligned_handler fetches cr.ipsr again, so delete the first one. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Make Kprobes depend on modulesLinus Torvalds2006-02-26
| | | | | | | | | Commit 9ec4b1f356b3bad928ae8e2aa9caebfa737d52df made kprobes not compile without module support, so just make that clear in the Kconfig file. Also, since it's marked EXPERIMENTAL, make that dependency explicit too. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [IA64] Count disabled cpus as potential hot-pluggable CPUsAshok Raj2006-02-16
| | | | | | | | | | Minor updates to earlier patch. - Added to documentation to add ia64 as well. - Minor clarification on how to use disabled cpus - used plain max instead of max_t per Andew Morton. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Missing check for TIF_WORK if trace/audit enabledJack Steiner2006-02-16
| | | | | | | | | It appears that if auditing is enabled, the kernel fails to check for pending signals before returning to user mode. Signed-off-by: Jack Steiner <steiner@sgi.com> Acked-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Pull fix-cpu-possible-map into release branchTony Luck2006-02-15
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| * [IA64] Count disabled cpus as potential hot-pluggable CPUsAshok Raj2006-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Have a facility to account for potentially hot-pluggable CPUs. ACPI doesnt give a determinstic method to find hot-pluggable CPUs. Hence we use 2 methods to assist. - BIOS can mark potentially hot-pluggable CPUs as disabled in the MADT tables. - User can specify the number of hot-pluggable CPUs via parameter additional_cpus=X The option is enabled only if ACPI_CONFIG_HOTPLUG_CPU=y which enables the physical hotplug option. Without which user can still use logical onlining and offlining of CPUs by enabling CONFIG_HOTPLUG_CPU=y Adds more bits to cpu_possible_map for potentially hot-pluggable cpus. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] Dont set NR_CPUS for cpu_possible_map when CPU hotplug is enabled.Ashok Raj2006-02-14
| | | | | | | | | | | | | | Do not set cpu_possible_map for NR_CPUS when ACPI_CONFIG_HOTPLUG_CPU is set. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] support panic_on_oops sysctlHorms2006-02-15
| | | | | | | | | | | | | | | | Trivial port of this feature from i386 As it stands, panic_on_oops but does nothing on ia64 Signed-Off-By: Horms <horms@verge.net.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] ia64: simplify and fix udelay()hawkes@sgi.com2006-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The original ia64 udelay() was simple, but flawed for platforms without synchronized ITCs: a preemption and migration to another CPU during the while-loop likely resulted in too-early termination or very, very lengthy looping. The first fix (now in 2.6.15) broke the delay loop into smaller, non-preemptible chunks, reenabling preemption between the chunks. This fix is flawed in that the total udelay is computed to be the sum of just the non-premptible while-loop pieces, i.e., not counting the time spent in the interim preemptible periods. If an interrupt or a migration occurs during one of these interim periods, then that time is invisible and only serves to lengthen the effective udelay(). This new fix backs out the current flawed fix and returns to a simple udelay(), fully preemptible and interruptible. It implements two simple alternative udelay() routines: one a default generic version that uses ia64_get_itc(), and the other an sn-specific version that uses that platform's RTC. Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64-SGI] enforce proper ordering of callouts by XPCDean Nelson2006-02-15
| | | | | | | | | | | | | | | | | | Fix XPC so that it does not deliver any messages until the connected callout has returned, as well as, prevent the disconnected callout to occur before the disconnecting callout has returned. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64-SGI] fix the size of __sn_cnodeid_to_nasidDean Roe2006-02-15
| | | | | | | | | | | | | | | | | | The __sn_cnodeid_to_nasid array was incorrectly sized at MAX_NUMNODES. On a large system, this array could overflow. The following patch corrects this by defining it to MAX_COMPACT_NODES. Signed-off-by: Dean Roe <roe@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64-SGI] export sn_pcidev_info_getMark Maule2006-02-15
| | | | | | | | | | | | | | Export sn_pcidev_info_get. Signed-off-by Mark Maule <maule@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64-SGI] remove compile time warningJes Sorensen2006-02-15
| | | | | | | | | | | | | | This one falls into the "present for Andrew Morton" category to address his wishlist for a compiler warning free build ;-) Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] remove obsolete corporate addressJes Sorensen2006-02-15
| | | | | | | | | | | | | | Remove obsolete SGI address Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64-SGI] sn2 minor fixes and cleanupsJes Sorensen2006-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | General SN2 code cleanup: - Do not initialize global variables to zero - Use kzalloc instead of kmalloc+memset - Check kmalloc return values - Do not obfuscate spin lock calls - Remove some unused code - Various formatting cleanups Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] Remove duplicate EXPORT_SYMBOLsAndreas Schwab2006-02-15
|/ | | | | | | | Remove symbol exports from ia64_ksyms.c that are already exported in lib/string.c. Signed-off-by: Andreas Schwab <schwab@suse.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Pull new-syscalls into release branchTony Luck2006-02-09
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| * [IA64] unshare system call registration for ia64Janak Desai2006-02-08
| | | | | | | | | | | | | | | | | | | | Registers system call for the ia64 architecture. Reserves space for ppoll and pselect, and adds unshare at system call number 1296. Signed-off-by: Janak Desai <janak@us.ibm.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] add syscall entry for *at()Chen, Kenneth W2006-02-06
| | | | | | | | | | | | | | Wire up the ia64 syscalls for *at() functions. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] mca_drv: Add minstate validationHidetoshi Seto2006-02-09
| | | | | | | | | | | | | | | | MCA driver can cause panic if kernel gets a state info with no minstate. This patch adds minstate validation before handling it. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] sys32_signal() forgets to initialize ->sa_maskTony Luck2006-02-09
| | | | | | | | | | | | | | Pointed out by Oleg Nesterov <oleg@tv-sign.ru>, who in turn got the hint from Linus. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64-SGI] Small cleanup for misuse of list_for_each to list_for_each_safe.Prarit Bhargava2006-02-09
| | | | | | | | | | | | | | Patch was suggested by Kenneth W. Chen here Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64-SGI] Hotplug driver related fix in the SN ia64 code.Prarit Bhargava2006-02-09
| | | | | | | | | | | | | | | | Remove an erroneous kfree, and unlink the pcidev_info struct from the pcidev_info list prior to free'ing the pcidev_info struct. Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge branch 'release' of ↵Linus Torvalds2006-02-08
|\ \ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
| * | [IA64] prevent sn2 specific code to be run in generic kernelsJes Sorensen2006-02-08
| | | | | | | | | | | | | | | | | | | | | | | | Prevent SN2 specific code to be executed on non SN2 platforms when running a generic kernel. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Fix CONFIG_PRINTK_TIMETony Luck2006-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There were two problems with enabling the PRINTK_TIME config option: 1) The first calls to printk() occur before per-cpu data virtual address is pinned into the TLB, so sched_clock() can fault. 2) sched_clock() is based on ar.itc, which may not be synchronized across cpus. Ken Chen started this patch, Tony Luck tinkered with it, and Jes Sorensen perfected it. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Fix wrong use of memparse in efi.cZou Nan hai2006-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The check of (end != cp) after memparse in efi.c looks wrong to me. The result is that we can't use mem= and max_addr= kernel parameter at the same time. The following patch removed the check just like other arches do. Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Fix a possible buffer overflow in efi.cZou Nan hai2006-02-07
| | | | | | | | | | | | | | | | | | | | | Make sure to save space for the trailing '\0'. Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | [PATCH] drive_info removal outside of arch/i386Al Viro2006-02-07
|/ / | | | | | | | | | | drive_info is used only by hd.c and that happens under #ifdef __i386__. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'release' of ↵Linus Torvalds2006-02-06
|\ \ | |/ |/| | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
| * [IA64-SGI] Shub2 BTE address fixRuss Anderson2006-02-06
| | | | | | | | | | | | | | | | | | | | | | After converting the cpu physical address to shub2 physical addressing, the address was run through TO_PHYS() which clobbered a high node offset bit causing the BTE to fail on shub2 nodes with large memory. This fix corrects that problem. Signed-off-by: Russ Anderson (rja@sgi.com) Signed-off-by: Tony Luck <tony.luck@intel.com>
| * Pull sn-recursive-flags-for-select-builds into release branchTony Luck2006-02-06
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| | * [IA64-SGI] Recursive flags do not work for selective buildsKeith Owens2006-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | [IA64-SGI] Fix XPC code which sleeps with spin_lock_irqsave().Robin Holt2006-02-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | During some testing, we got a warning about trying to allocate memory while holding a lock. This fixes that problem. Signed-off-by: Robin Holt <holt@sgi.com> Acked-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64-SGI] sn2 housekeepingJes Sorensen2006-02-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintenance patch: - Add missing __init calls - Do not zero initialize global variables - No need to typecast function call returns to void - Some formatting Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | Pull sgi-drivers-makefile-cleanup into release branchTony Luck2006-02-02
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| | * | [PATCH] drivers/sn/ must be entered for CONFIG_SGI_IOC3Jes Sorensen2006-01-26
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | [IA64] avoid broken SAL_CACHE_FLUSH implementationsBjorn Helgaas2006-02-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If SAL_CACHE_FLUSH drops interrupts, complain about it and fall back to using PAL_CACHE_FLUSH instead. This is to work around a defect in HP rx5670 firmware: when an interrupt occurs during SAL_CACHE_FLUSH, SAL drops the interrupt but leaves it marked "in-service", which leaves the interrupt (and others of equal or lower priority) masked. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Remove stale comment from ia64/KconfigKyle McMartin2006-02-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | Somehow I doubt this comment is meant to be here anymore... It's been floating after the L1_CACHE_SHIFT entry since before Linux moved to bitkeeper. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64-SGI] disable msi for all altix pci devicesMark Maule2006-02-02
| | | | | | | | | | | | | | | | | | | | | | | | Temporary patch to make pci_enable_msi() fail gracefully on altix. Will be removed after 2.6.16 releases and the msi abstraction patches start flowing. Signed-off-by: Mark Maule <maule@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64-SGI] fix smp_affinity redirection when using CONFIG_PCI_MSIMark Maule2006-02-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Pull update-tlbflush-sn into release branchTony Luck2006-02-02
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| | * | [IA64-SGI] Update TLB flushing code for SN platformJack Steiner2006-01-26
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | / [PATCH] Export cpu topology in sysfsZhang, Yanmin2006-02-03
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch implements cpu topology exportation by sysfs. Items (attributes) are similar to /proc/cpuinfo. 1) /sys/devices/system/cpu/cpuX/topology/physical_package_id: represent the physical package id of cpu X; 2) /sys/devices/system/cpu/cpuX/topology/core_id: represent the cpu core id to cpu X; 3) /sys/devices/system/cpu/cpuX/topology/thread_siblings: represent the thread siblings to cpu X in the same core; 4) /sys/devices/system/cpu/cpuX/topology/core_siblings: represent the thread siblings to cpu X in the same physical package; To implement it in an architecture-neutral way, a new source file, driver/base/topology.c, is to export the 5 attributes. If one architecture wants to support this feature, it just needs to implement 4 defines, typically in file include/asm-XXX/topology.h. The 4 defines are: #define topology_physical_package_id(cpu) #define topology_core_id(cpu) #define topology_thread_siblings(cpu) #define topology_core_siblings(cpu) The type of **_id is int. The type of siblings is cpumask_t. To be consistent on all architectures, the 4 attributes should have deafult values if their values are unavailable. Below is the rule. 1) physical_package_id: If cpu has no physical package id, -1 is the default value. 2) core_id: If cpu doesn't support multi-core, its core id is 0. 3) thread_siblings: Just include itself, if the cpu doesn't support HT/multi-thread. 4) core_siblings: Just include itself, if the cpu doesn't support multi-core and HT/Multi-thread. So be careful when declaring the 4 defines in include/asm-XXX/topology.h. If an attribute isn't defined on an architecture, it won't be exported. Thank Nathan, Greg, Andi, Paul and Venki. The patch provides defines for i386/x86_64/ia64. Signed-off-by: Zhang, Yanmin <yanmin.zhang@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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