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2006-02-07[MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Check function pointers are non-zero before calling.Ralf Baechle
Several boards don't initialize the pointers, so let's play safe. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Revert "mips: add pm_power_off"Ralf Baechle
pm_power_off duplicates the functionality of _machine_restart. This reverts b142159fa5ffbad73b6927fafa5440148030f3f1 commit.
2006-02-07[MIPS] RTLX compile fixes.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Get rid of unnecessary prototypes. Fixes and optimizations for HZ > 100.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Remove stray .set mips3 resulting in 64-bit instruction in 32-bit ↵Ralf Baechle
kernels. Only the NMI handler was affected so this is a low impact bug. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-05Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
2006-02-05[PATCH] i386: HIGHMEM64G must depend on X86_CMPXCHG64Adrian Bunk
Due to the usage of set_64bit in include/asm-i386/pgtable-3level.h, HIGHMEM64G must depend on X86_CMPXCHG64. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05[PATCH] i386: print kernel version in register dumpsChuck Ebbert
Show first field of kernel version in register dumps like x86_64 does. Changes output from e.g.: (2.6.16-rc1) to: (2.6.16-rc1 #12) Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05[PATCH] i386 cpu hotplug: don't access freed memoryChuck Ebbert
i386 CPU init code accesses freed init memory when booting a newly-started processor after CPU hotplug. The cpu_devs array is searched to find the vendor and it contains pointers to freed data. Fix that by: 1. Zeroing entries for freed vendor data after bootup. 2. Changing Transmeta, NSC and UMC to all __init[data]. 3. Printing a warning (once only) and setting this_cpu to a safe default when the vendor is not found. This does not change behavior for AMD systems. They were broken already but no error was reported. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05[PATCH] x86: fix stack trace facility levelHugh Dickins
dump_stack() on page allocation failure presently has an irritating habit of shouting just "====" at everyone: please stop it. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05[PATCH] percpu data: only iterate over possible CPUsEric Dumazet
percpu_data blindly allocates bootmem memory to store NR_CPUS instances of cpudata, instead of allocating memory only for possible cpus. As a preparation for changing that, we need to convert various 0 -> NR_CPUS loops to use for_each_cpu(). (The above only applies to users of asm-generic/percpu.h. powerpc has gone it alone and is presently only allocating memory for present CPUs, so it's currently corrupting memory). Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Jens Axboe <axboe@suse.de> Cc: Anton Blanchard <anton@samba.org> Acked-by: William Irwin <wli@holomorphy.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05Revert "[PATCH] x86_64: Fix the node cpumask of a cpu going down"Linus Torvalds
This reverts commit 10f4dc8b27ac42f930ac55adb8c521264dc997f8. Quoth Andi Kleen: "Kiran decided that it makes the problem worse than it was before. Fixing it fully requires more work which is too much for 2.6.16. So please revert that commit for now." Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05[SPARC64]: Update defconfig.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-05[SPARC64]: Add .gitignore file for sparc64 boot images.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-04[PATCH] x86_64: IOMMU printk cleanupJon Mason
This patch contains a printk reorder to remove the current problem of displaying "PCI-DMA: Disabling IOMMU." and then "PCI-DMA: using GART IOMMU" 20 lines later in dmesg. It also constains a printk reorder in swiotlb to state swiotlb enablement prior to describing the location of the bounce buffers, and a printk reorder to state gart enablement prior to describing the aperature. Also constains a whitespace cleanup in arch/x86_64/kernel/setup.c Tested (along with patch 2/2) on dual opteron with gart enabled, iommu=soft, and iommu=off. Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Let impossible CPUs point to reference per cpu dataAndi Kleen
Hack for 2.6.16. In 2.6.17 all code that uses NR_CPUs should be audited and changed to only touch possible CPUs. Don't mark the reference per cpu data init data (so it stays around after boot) and point all impossible CPUs to it. This way they reference some valid - although shared memory. Usually this is only initialization like INIT_LIST_HEADs and there won't be races because these CPUs never run. Still somewhat hackish. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] i386/x86-64: Don't ack the APIC for bad interrupts when the APIC is ↵Andi Kleen
not enabled It's bad juju to touch the APIC when it hasn't been enabled. I also moved ack_bad_irq for x86-64 out of line following i386. Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Dont record local apic ids when they are disabled in MADTAshok Raj
Some broken BIOS's had processors disabled, but same apic id as a valid processor. This causes acpi_processor_start() to think this disabled cpu is ok, and croak. So we dont record bad apicid's anymore. http://bugzilla.kernel.org/show_bug.cgi?id=5930 Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: minor odering correction to dump_pagetable()Jan Beulich
Checking of the validity of pointers should be consistently done before dereferencing the pointer. Signed-Off-By: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: small fix for CFI annotationsJan Beulich
Conditionalize two unwind directives to match other similarly conditional code. Signed-Off-By: Jan Beulich <jbeulich@novell.com> Cc: Jim Houston <jim.houston@ccur.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Calibrate APIC timer using PM timerAndi Kleen
On some broken motherboards (at least one NForce3 based AMD64 laptop) the PIT timer runs at a incorrect frequency. This patch adds a new option "apicpmtimer" that allows to use the APIC timer and calibrate it using the PMTimer. It requires the earlier patch that allows to run the main timer from the APIC. Specifying apicpmtimer implies apicmaintimer. The option defaults to off for now. I tested it on a few systems and the resulting APIC timer frequencies were usually a bit off, but always <1%, which should be tolerable. TBD figure out heuristic to enable this automatically on the affected systems TBD perhaps do it on all NForce3s or using DMI? Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Don't allow kprobes on __switch_toAndi Kleen
kprobes cannot deal with the funny calling conventions when it runs on a different stack when it returns. If someone wants to instrument context switch they can add a probe to schedule() instead. Cc: jkenisto@us.ibm.com, prasanna@in.ibm.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: align per-cpu section to configured cache bytesZach Brown
Align the start of the per-cpu section to the configured number of bytes in a cache line. This stops a BUG_ON() from triggering in load_module() when DEFINE_PER_CPU() is used in a module and the section isn't cacheline-aligned. Rusty also found this and sent a patch in a while ago (http://lkml.org/lkml/2004/10/19/17), I don't know what came of that. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: When allocation of merged SG lists fails in the IOMMU don't ↵Kevin VanMaren
merge [ AK: I redid Kevin's fix to be simpler, but the idea and original analysis of the problem is from Kevin] This avoid allocation failures on some SATA systems like Nvidia CK8 when the IOMMU gets fragmented. Modern SATA devices have quite large queues (128 entries) and the FS with ext2/3 is good enough now that it often passes whole 128 page sg lists down to the driver. These require 512K of continuous free space in the IOMMU aperture to map when merged. When the IOMMU is fragmented this could lead to spurious IO errors due to failing mappings. Short term fix is to just try to map the SG list again unmerged page by page - this way fragmentation doesn't matter anymore. The code for that was already there, but it just wasn't enabled for the merge case. According to Kevin at least the Nvidia device doesn't seem to benefit from merging much anyways, so the only slowdown is from trying to do an unnecessary merge attempt. Kevin plans to implement better fragmentation avoidance in the future, but that wouldn't be 2.6.16 material. TBD: should add some statistic counters to count how often that really happens. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Fix zero mcfg entry workaround on x86-64Andi Kleen
I broke this earlier when moving the patch from i386 to x86-64. Need to return the virtual address here, not the physical address. This fixes some boot time crashes on x86-64. Cc: gregkh@suse.de Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Do more checking in the SRAT header codeAndi Kleen
- Check if the processor/memory affinity entries are long enough according to the ACPI 3.0 spec. - Ignore memory affinity entries that define a zero length region. All based on BIOS issues found in the field @) Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: data/functions wrongly marked as __init with cpu hotplug.Ashok Raj
attached patch is 2 more cases i found via running the reference_init.pl script. These were easy to spot just knowing the file names. There is one another about init/main.c that i cant exactly zero in. (partly because i dont know how to interpret the data thats spewed out of the tool). Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: mark two routines as __cpuinitShaohua Li
SIgned-off-by: Shaohua Li<shaohua.li@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Clear more state when ignoring empty node in SRAT parsingAndi Kleen
Might fix boot failures on systems with empty PXMs in SRAT Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Remove CONFIG_INIT_DEBUGAndi Kleen
It has been enabled by default for some time now and is cheap enough so it doesn't matter anyways. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Fix the node cpumask of a cpu going downRavikiran G Thirumalai
Currently, x86_64 and ia64 arches do not clear the corresponding bits in the node's cpumask when a cpu goes down or cpu bring up is cancelled. This is buggy since there are pieces of common code where the cpumask is checked in the cpu down code path to decide on things (like in the slab down path). PPC does the right thing, but x86_64 and ia64 don't (This was the reason Sonny hit upon a slab bug during cpu offline on ppc and could not reproduce on other arches). This patch fixes it for x86_64. I won't attempt ia64 as I cannot test it. Credit for spotting this should go to Alok. Signed-off-by: Alok N Kataria <alokk@calsoftinc.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Undo the earlier changes to remove unrolled copy/memset ↵Andi Kleen
functions They cause quite bad performance regressions on Netburst This is temporary until we can get new optimized functions for these CPUs. This undoes changes that were done in 2.6.15 and in 2.6.16-rc1, essentially bringing the code back to 2.6.14 level. Only change is I renamed the X86_FEATURE_K8_C flag to X86_FEATURE_REP_GOOD and fixed the check for the flag and also fixed some comments. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Fix swiotlb dma_alloc_coherent fallbackAndi Kleen
This avoids BUG_ONs in the low level allocator when an illegal GFP mask is added. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: [PATCH] timer resumeShaohua Li
At resume time, TSC's value or something similar might be changed a lot against suspend time. This could make system gets a very big lost ticks. See http://bugzilla.kernel.org/show_bug.cgi?id=5825 Signed-off-by: Shaohua Li<shaohua.li@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Automatically enable apicmaintimer on ATI boardsAndi Kleen
They all have problems with IRQ 0 routing, so just use the APIC on them. Can be overwritten with "noapicmaintimer" Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Allow to run main time keeping from the local APIC interruptAndi Kleen
Another piece from the no-idle-tick patch. This can be enabled with the "apicmaintimer" option. This is mainly useful when the PIT/HPET interrupt is unreliable. Note there are some systems that are known to stop the APIC timer in C3. For those it will never work, but this case should be automatically detected. It also only works with PM timer right now. When HPET is used the way the main timer handler computes the delay doesn't work. It should be a bit more efficient because there is one less regular interrupt to process on the boot processor. Requires earlier bugfix from Venkatesh Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Disallow kprobes on NMI handlersAndi Kleen
A kprobe executes IRET early and that could cause NMI recursion and stack corruption. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-04[PATCH] x86_64: Update defconfigAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6Linus Torvalds
2006-02-03Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
2006-02-03[ARM] Remove ARCH_CAMELOT from at91 defconfigsRussell King
ARCH_CAMELOT (excalibur) got removed; remove it from the AT91 defconfigs Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-03[PATCH] Export cpu topology in sysfsZhang, Yanmin
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>
2006-02-03[PATCH] OProfile: fixed x86_64 incorrect kernel call graphsTong Li
Fix the problem in kernel 2.6.15.1 (and early versions) that OProfile on x86_64 does not correctly collect the stack traces for kernel functions. The original code in valid_kernel_stack() in arch/i386/oprofile/backtrace.c assumes that the frame pointer (headaddr) should be greater than stack (i.e., regs). This assumption is wrong for x86_64 because NMIs in x86_64 use a seperate stack different from the kernel stack. Therefore, the variable stack now points to some location on the NMI stack, which turns out to be at a higher address than the frame pointer (headaddr) on the kernel stack. The correct comparison here should be between headaddr and regs->rsp for x86_64. Signed-off-by: Tong Li <tong.n.li@intel.com> Cc: John Levon <levon@movementarian.org> Cc: Philippe Elie <phil.el@wanadoo.fr> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03[PATCH] Fix some ucLinux breakage from the tty updatesAlan Cox
Breakage reported by Adrian Bunk Untested (no hardware) Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03[PATCH] s390: fix compat syscall wrapperHeiko Carstens
Patch 9ad11ab48b1ad618bf47076e9e579f267f5306c2 changes the type of the first argument of some compat syscalls from int to unsigned int. Add these changes to the s390 compat wrapper as well. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
2006-02-01[PATCH] PowerPC/PCI Hotplug build breakLinas Vepstas
Build break: Building PCI hotplug on PowerPC results in a build break, due to failure to export symbols. Reported today by Dave Jones <davej@redhat.com>: drivers/pci/hotplug/rpaphp.ko needs unknown symbol pcibios_add_pci_devices This patch fixes the break in the arch/powerpc tree. Next patch fixes same problem in drivers/pci tree Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01[ARM] 3286/2: S3C2400 - adds to the table of supported CPUsLucas Correia Villa Real
Patch from Lucas Correia Villa Real Oops, sorry for the typo on name_s3c2400, a new patch is attached. About GSTATUS1, S3C2400 doesn't have that register, so it's not safe to use that memory address to identify its CPU. Signed-off-by: Lucas Correia Villa Real <lucasvr@gobolinux.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-01[ARM] 3284/1: S3C2400 - adds support to GPIOLucas Correia Villa Real
Patch from Lucas Correia Villa Real This patch adds support to GPIO on the S3C2400, which is going to be used by the GP32 machine and the SMDK2400 development board. Signed-off-by: Lucas Correia Villa Real <lucasvr@gobolinux.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>