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2006-02-26Make Kprobes depend on modulesLinus Torvalds
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>
2006-02-26[PATCH] x86-64/i386: Use common X86_PM_TIMER option and make it EMBEDDEDAndi Kleen
This makes x86-64 use the common X86_PM_TIMER Kconfig entry in drivers/acpi And since PM timer is needed for correct timing on a lot of systems now (e.g. AMD dual cores) and we often get bug reports from people who forgot to set it make it depend on CONFIG_EMBEDDED. x86-64 had this change before and it's a good thing. I also fixed the description slightly to make this more clear. Cc: len.brown@intel.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16[PATCH] x86_64: add x86-64 support for memory hot-addMatt Tolentino
Add x86-64 specific memory hot-add functions, Kconfig options, and runtime kernel page table update functions to make hot-add usable on x86-64 machines. Also, fixup the nefarious conditional locking and exports pointed out by Andi. Tested on Intel and IBM x86-64 memory hot-add capable systems. Signed-off-by: Matt Tolentino <matthew.e.tolentino@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16[PATCH] x86_64: Only let user select PM timer support when EMBEDDEDAndi Kleen
To avoid mistakes. I got a few reports where people got broken timing because they didn't have the PMTIMER fallback. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_archRavikiran G Thirumalai
Introduce vSMP arch to the kernel. This patch: 1. Adds CONFIG_X86_VSMP 2. Adds machine specific macros for local_irq_disabled, local_irq_enabled and irqs_disabled 3. Writes to the vSMP CTL device to indicate kernel compiled with CONFIG_VSMP Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Signed-off-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Use function pointers to call DMA mapping functionsMuli Ben-Yehuda
AK: I hacked Muli's original patch a lot and there were a lot of changes - all bugs are probably to blame on me now. There were also some changes in the fall back behaviour for swiotlb - in particular it doesn't try to use GFP_DMA now anymore. Also all DMA mapping operations use the same core dma_alloc_coherent code with proper fallbacks now. And various other changes and cleanups. Known problems: iommu=force swiotlb=force together breaks needs more testing. This patch cleans up x86_64's DMA mapping dispatching code. Right now we have three possible IOMMU types: AGP GART, swiotlb and nommu, and in the future we will also have Xen's x86_64 swiotlb and other HW IOMMUs for x86_64. In order to support all of them cleanly, this patch: - introduces a struct dma_mapping_ops with function pointers for each of the DMA mapping operations of gart (AMD HW IOMMU), swiotlb (software IOMMU) and nommu (no IOMMU). - gets rid of: if (swiotlb) return swiotlb_xxx(); - PCI_DMA_BUS_IS_PHYS is now checked against the dma_ops being set This makes swiotlb faster by avoiding double copying in some cases. Signed-Off-By: Muli Ben-Yehuda <mulix@mulix.org> Signed-Off-By: Jon D. Mason <jdmason@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Generalize DMI and enable for x86-64Andi Kleen
Some people need it now on 64bit so reuse the i386 code for x86-64. This will be also useful for future bug workarounds. It is a bit simplified there because there is no need to do it very early on x86-64. This means it doesn't need early ioremap et.al. We run it as a core initcall right now. I hope it's not needed for early setup. I added a general CONFIG_DMI symbol in case IA64 or someone else wants to reuse the code later too. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] kexec: change CONFIG_PHYSICAL_START dependencyManeesh Soni
I have heard some complaints about people not finding CONFIG_CRASH_DUMP option and also some objections about its dependency on CONFIG_EMBEDDED. The following patch ends that dependency. I thought of hiding it under CONFIG_KEXEC, but CONFIG_PHYSICAL_START could also be used for some reasons other than kexec/kdump and hence left it visible. I will also update the documentation accordingly. o Following patch removes the config dependency of CONFIG_PHYSICAL_START on CONFIG_EMBEDDED. The reason being CONFIG_CRASH_DUMP option for kdump needs CONFIG_PHYSICAL_START which makes CONFIG_CRASH_DUMP depend on CONFIG_EMBEDDED. It is not always obvious for kdump users to choose CONFIG_EMBEDDED. o It also shifts the palce where this option appears, to make it closer to kexec and kdump options. Signed-off-by: Maneesh Soni <maneesh@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Haren Myneni <haren@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] kdump: x86_64 save cpu registers upon crashVivek Goyal
- Saving the cpu registers of all cpus before booting in to the crash kernel. - crash_setup_regs will save the registers of the cpu on which panic has occured. One of the concerns ppc64 folks raised is that after capturing the register states, one should not pop the current call frame and push new one. Hence it has been inlined. More call frames later get pushed on to stack (machine_crash_shutdown() and machine_kexec()), but one will not want to backtrace those. - Not very sure about the CFI annotations. With this patch I am getting decent backtrace with gdb. Assuming, compiler has generated enough debugging information for crash_kexec(). Coding crash_setup_regs() in pure assembly makes it tricky because then it can not be inlined and we don't want to return back after capturing register states we don't want to pop this call frame. - Saving the non-panicing cpus registers will be done in the NMI handler while shooting down them in machine_crash_shutdown. - Introducing CRASH_DUMP option in Kconfig for x86_64. Signed-off-by: Murali M Chakravarthy <muralim@in.ibm.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@muc.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] tiny: Make *[ug]id16 support optionalMatt Mackall
Configurable 16-bit UID and friends support This allows turning off the legacy 16 bit UID interfaces on embedded platforms. text data bss dec hex filename 3330172 529036 190556 4049764 3dcb64 vmlinux-baseline 3328268 529040 190556 4047864 3dc3f8 vmlinux From: Adrian Bunk <bunk@stusta.de> UID16 was accidentially disabled for !EMBEDDED. Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14Merge x86-64 update from AndiLinus Torvalds
2005-11-14[PATCH] x86_64: Make ACPI NUMA and NUMA emulation peers of K8_NUMA in KconfigRavikiran G Thirumalai
On x86_64 arches, there is no way to choose ACPI_NUMA without having to choose K8_NUMA. CONFIG_K8_NUMA is not needed for Intel EM64T NUMA boxes. It also looks odd if you have to select ACPI_NUMA from the power management menu. This patch fixes those oddities. Patch does the following: 1. Makes NUMA a config option like other arches 2. Makes topology detection options like K8_NUMA dependent on NUMA 3. Choosing ACPI NUMA detection can be done from the standard "Processor type and features" menu AK: I fixed up the dependencies and changed the help texts a bit on top of Kiran's patch. 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>
2005-11-14[PATCH] x86_64: Allow modular build of ia32 aout loaderAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14[PATCH] x86_64: Support for AMD specific MCE Threshold.Jacob Shin
MC4_MISC - DRAM Errors Threshold Register realized under AMD K8 Rev F. This register is used to count correctable and uncorrectable ECC errors that occur during DRAM read operations. The user may interface through sysfs files in order to change the threshold configuration. bank%d/error_count - reads current error count, write to clear. bank%d/interrupt_enable - set/clear interrupt enable. bank%d/threshold_limit - read/write the threshold limit. APIC vector 0xF9 in hw_irq.h. 5 software defined bank ids in mce.h. new apic.c function to setup threshold apic lvt. defaults to interrupt off, count enabled, and threshold limit max. sysfs interface created on /sys/devices/system/threshold. AK: added some ifdefs to make it compile on UP Signed-off-by: Jacob Shin <jacob.shin@amd.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menuPrasanna S Panchamukhi
Andrew Morton suggested to move kprobes from kernel hacking menu, since kernel hacking menu is in-appropriate for the Kprobes. This patch moves Kprobes and Oprofile under instrumentation menu. (akpm: it's not a natural fit, but things like djprobes and the s390 guys' statistics library need a home) Signed-of-by: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Philippe Elie <phil.el@wanadoo.fr> Cc: John Levon <levon@movementarian.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21[PATCH] update URL for HPET spec.Randy Dunlap
Correct URL for HPET spec. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-14[LIB]: Consolidate _atomic_dec_and_lock()David S. Miller
Several implementations were essentialy a common piece of C code using the cmpxchg() macro. Put the implementation in one spot that everyone can share, and convert sparc64 over to using this. Alpha is the lone arch-specific implementation, which codes up a special fast path for the common case in order to avoid GP reloading which a pure C version would require. Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-08Merge linux-2.6 with linux-acpi-2.6Len Brown
2005-09-07[PATCH] Kconfig fix (BLK_DEV_FD dependencies)viro@ZenIV.linux.org.uk
Sanitized and fixed floppy dependencies: split the messy dependencies for BLK_DEV_FD by introducing a new symbol (ARCH_MAY_HAVE_PC_FDC), making BLK_DEV_FD depend on that one and taking declarations of ARCH_MAY_HAVE_PC_FDC to arch/*/Kconfig. While we are at it, fixed several obvious cases when BLK_DEV_FD should have been excluded (architectures lacking asm/floppy.h are *not* going to have floppy.c compile, let alone work). If you can come up with better name for that ("this architecture might have working PC-compatible floppy disk controller"), you are more than welcome - just s/ARCH_MAY_HAVE_PC_FDC/your_prefered_name/g in the patch below... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07[PATCH] x86/x86_64: deferred handling of writes to /proc/irqxx/smp_affinityAshok Raj
When handling writes to /proc/irq, current code is re-programming rte entries directly. This is not recommended and could potentially cause chipset's to lockup, or cause missing interrupts. CONFIG_IRQ_BALANCE does this correctly, where it re-programs only when the interrupt is pending. The same needs to be done for /proc/irq handling as well. Otherwise user space irq balancers are really not doing the right thing. - Changed pending_irq_balance_cpumask to pending_irq_migrate_cpumask for lack of a generic name. - added move_irq out of IRQ_BALANCE, and added this same to X86_64 - Added new proc handler for write, so we can do deferred write at irq handling time. - Display of /proc/irq/XX/smp_affinity used to display CPU_MASKALL, instead it now shows only active cpu masks, or exactly what was set. - Provided a common move_irq implementation, instead of duplicating when using generic irq framework. Tested on i386/x86_64 and ia64 with CONFIG_PCI_MSI turned on and off. Tested UP builds as well. MSI testing: tbd: I have cards, need to look for a x-over cable, although I did test an earlier version of this patch. Will test in a couple days. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Zwane Mwaikambo <zwane@holomorphy.com> Grudgingly-acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org> Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05[PATCH] unify x86/x86-64 semaphore codeBenjamin LaHaise
This patch moves the common code in x86 and x86-64's semaphore.c into a single file in lib/semaphore-sleepers.c. The arch specific asm stubs are left in the arch tree (in semaphore.c for i386 and in the asm for x86-64). There should be no changes in code/functionality with this patch. Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-24[ACPI] delete CONFIG_ACPI_BOOTLen Brown
it has been a synonym for CONFIG_ACPI since 2.6.12 Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-28[PATCH] x86_64: Improve CONFIG_GART_IOMMU description and make it default yAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-11[NET]: add a top-level Networking menu to *configSam Ravnborg
Create a new top-level menu named "Networking" thus moving net related options and protocol selection way from the drivers menu and up on the top-level where they belong. To implement this all architectures has to source "net/Kconfig" before drivers/*/Kconfig in their Kconfig file. This change has been implemented for all architectures. Device drivers for ordinary NIC's are still to be found in the Device Drivers section, but Bluetooth, IrDA and ax25 are located with their corresponding menu entries under the new networking menu item. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-06-25[PATCH] kexec: x86_64 kexec implementationEric W. Biederman
This is the x86_64 implementation of machine kexec. 32bit compatibility support has been implemented, and machine_kexec has been enhanced to not care about the changing internal kernel paget table structures. From: Alexander Nyberg <alexn@dsv.su.se> build fix Signed-off-by: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25[PATCH] kexec: x86_64: add CONFIG_PHYSICAL_STARTEric W. Biederman
For one kernel to report a crash another kernel has created we need to have 2 kernels loaded simultaneously in memory. To accomplish this the two kernels need to built to run at different physical addresses. This patch adds the CONFIG_PHYSICAL_START option to the x86_64 kernel so we can do just that. You need to know what you are doing and the ramifications are before changing this value, and most users won't care so I have made it depend on CONFIG_EMBEDDED bzImage kernels will work and run at a different address when compiled with this option but they will still load at 1MB. If you need a kernel loaded at a different address as well you need to boot a vmlinux. Signed-off-by: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25[PATCH] consolidate PREEMPT options into kernel/Kconfig.preemptIngo Molnar
This patch consolidates the CONFIG_PREEMPT and CONFIG_PREEMPT_BKL preemption options into kernel/Kconfig.preempt. This, besides reducing source-code, also enables more centralized tweaking of preemption related options. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25[PATCH] x86_64: CPU hotplug supportAshok Raj
Experimental CPU hotplug patch for x86_64 ----------------------------------------- This supports logical CPU online and offline. - Test with maxcpus=1, and then kick other cpu's off to test if init code is all cleaned up. CONFIG_SCHED_SMT works as well. - idle threads are forked on demand from keventd threads for clean startup TBD: 1. Not tested on a real NUMA machine (tested with numa=fake=2) 2. Handle ACPI pieces for physical hotplug support. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Andi Kleen <ak@muc.de> Acked-by: Zwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by: Shaohua.li<shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] i386: Selectable Frequency of the Timer InterruptChristoph Lameter
Make the timer frequency selectable. The timer interrupt may cause bus and memory contention in large NUMA systems since the interrupt occurs on each processor HZ times per second. Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] add x86-64 Kconfig options for sparsememMatt Tolentino
Add the requisite arch specific Kconfig options to enable the use of the sparsemem implementation for NUMA kernels on x86-64. Signed-off-by: Matt Tolentino <matthew.e.tolentino@intel.com> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] make each arch use mm/KconfigDave Hansen
For all architectures, this just means that you'll see a "Memory Model" choice in your architecture menu. For those that implement DISCONTIGMEM, you may eventually want to make your ARCH_DISCONTIGMEM_ENABLE a "def_bool y" and make your users select DISCONTIGMEM right out of the new choice menu. The only disadvantage might be if you have some specific things that you need in your help option to explain something about DISCONTIGMEM. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-31[PATCH] x86_64 CONFIG_ACPI=n build fixAndi Kleen
Make CONFIG_X86_PM_TIMER dependent on CONFIG_ACPI Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-27[PATCH] Note on ACPI build fixAlexander Nyberg
Even after the previous fix you can still set CONFIG_ACPI_BOOT indirectly even without CONFIG_ACPI by choosing CONFIG_PCI and CONFIG_PCI_MMCONFIG. That doesn't build very well either. This makes PCI_MMCONFIG depend on ACPI, fixing that hole. [ I guess in theory Kconfig could follow the whole chain of dependencies for things that get selected, but that sounds insanely complicated, so we'll just fix up these things by hand. --Linus ] Signed-off-by: Alexander Nyberg <alexn@telia.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17[PATCH] x86_64: Add pmtimer supportAndi Kleen
There are unfortunately more and more multi processor Opteron systems which don't have HPET timer support in the southbridge. This covers in particular Nvidia and VIA chipsets. They also don't guarantee that the TSCs are synchronized between CPUs; and especially with MP powernow the systems are nearly unusable because the time gets very inconsistent between CPUs. The timer code for x86-64 was originally written under the assumption that we could fall back to the HPET timer on such systems. But this doesn't work there. Another alternative is to use the ACPI PM timer as primary time source. This patch does that. The kernel only uses PM timer when there is no other choice because it has some disadvantages. Ported over from i386. It should be faster than the i386 version because I dropped the "read three times" workaround, but is still considerable slower than HPET and also does not work together with vsyscalls which have to be disabled. Cc: <mark.langsdorf@amd.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04[PATCH] ISA DMA Kconfig fixes - part 1Al Viro
A bunch of drivers use ISA DMA helpers or their equivalents for platforms that have ISA with different DMA controller (a lot of ARM boxen). Currently there is no way to put such dependency in Kconfig - CONFIG_ISA is not it (e.g. it is not set on platforms that have no ISA slots, but have on-board devices that pretend to be ISA ones). New symbol added - ISA_DMA_API. Set when we have functional enable_dma()/set_dma_mode()/etc. set of helpers. Next patches in the series will add missing dependencies for drivers that need them. I'm very carefully staying the hell out of the recurring flamefest on what exactly CONFIG_ISA would mean in ideal world - added symbol has a well-defined meaning and for now I really want to treat it as completely independent from the mess around CONFIG_ISA. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
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!