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2007-06-04[SPARC64]: Proper multi-core scheduling support.David S. Miller1-0/+9
The scheduling domain hierarchy is: all cpus --> cpus that share an instruction cache --> cpus that share an integer execution unit Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29[SPARC64]: Eliminate NR_CPUS limitations.David S. Miller1-3/+3
Cheetah systems can have cpuids as large as 1023, although physical systems don't have that many cpus. Only three limitations existed in the kernel preventing arbitrary NR_CPUS values: 1) dcache dirty cpu state stored in page->flags on D-cache aliasing platforms. With some build time calculations and some build-time BUG checks on page->flags layout, this one was easily solved. 2) The cheetah XCALL delivery code could only handle a cpumask with up to 32 cpus set. Some simple looping logic clears that up too. 3) thread_info->cpu was a u8, easily changed to a u16. There are a few spots in the kernel that still put NR_CPUS sized arrays on the kernel stack, but that's not a sparc64 specific problem. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11[SPARC64]: Kill LARGE_ALLOCS and update defconfig.David S. Miller1-3/+0
Let's use SLUB, since it works now, in order to get it tested a bit. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-07Quicklist support for sparc64David Miller1-0/+4
I ported this to sparc64 as per the patch below, tested on UP SunBlade1500 and 24 cpu Niagara T1000. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-02msi: introduce ARCH_SUPPORTS_MSI Kconfig option (rev2)Dan Williams1-0/+1
Allows architectures to advertise that they support MSI rather than listing each architecture as a PCI_MSI dependency. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-26[SPARC64]: Use SPARSEMEM_STATICDavid S. Miller1-0/+1
Decrease the SECTION_SIZE_BITS --> MAX_PHYSADDR_BITS range a little bit. The cost of going to SPARSEMEM_STATIC becomes 8K of BSS space, and in return we save a pointer dereferences on every page struct lookup. Even better we hit the main kernel image for the base address which is in a hugepage locked TLB entry. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26[SPARC64]: Add clocksource/clockevents support.David S. Miller1-4/+10
I'd like to thank John Stul and others for helping me along the way. A lot of cleanups fell out of this. For example, the get_compare() tick_op was totally unused, so was deleted. And the most often used tick_op members were grouped together for cache-friendlyness. The sparc64 TSC is given to the kernel as a one-shot timer. tick_ops->init_timer() simply turns off the privileged bit in the tick register (when possible), and disables the interrupt by setting bit 63 in the compare register. The ->disable_irq() op also sets this bit. tick_ops->add_compare() is changed to: 1) Add the given delta to "tick" not to "compare" 2) Return a boolean which, if true, means that the tick value read after writing the compare value was found to have incremented past the initial tick value. This mirrors logic used in the HPET driver's ->next_event() method. Each tick_ops implementation also now provides a name string. And we feed this into the clocksource and clockevents layers. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-17[SPARC64]: Use Kconfig.preemptDavid S. Miller1-12/+2
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-12[SPARC64]: We do not need ZONE_DMA.David S. Miller1-8/+0
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-11[PATCH] Set CONFIG_ZONE_DMA for arches with GENERIC_ISA_DMAChristoph Lameter1-0/+4
As Andi pointed out: CONFIG_GENERIC_ISA_DMA only disables the ISA DMA channel management. Other functionality may still expect GFP_DMA to provide memory below 16M. So we need to make sure that CONFIG_ZONE_DMA is set independent of CONFIG_GENERIC_ISA_DMA. Undo the modifications to mm/Kconfig where we made ZONE_DMA dependent on GENERIC_ISA_DMA and set theses explicitly in each arches Kconfig. Reviews must occur for each arch in order to determine if ZONE_DMA can be switched off. It can only be switched off if we know that all devices supported by a platform are capable of performing DMA transfers to all of memory (Some arches already support this: uml, avr32, sh sh64, parisc and IA64/Altix). In order to switch ZONE_DMA off conditionally, one would have to establish a scheme by which one can assure that no drivers are enabled that are only capable of doing I/O to a part of memory, or one needs to provide an alternate means of performing an allocation from a specific range of memory (like provided by alloc_pages_range()) and insure that all drivers use that call. In that case the arches alloc_dma_coherent() may need to be modified to call alloc_pages_range() instead of relying on GFP_DMA. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-10[SPARC64]: Add irqtrace/stacktrace/lockdep support.David S. Miller1-0/+8
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-08[PATCH] LOG2: Implement a general integer log2 facility in the kernelDavid Howells1-0/+8
This facility provides three entry points: ilog2() Log base 2 of unsigned long ilog2_u32() Log base 2 of u32 ilog2_u64() Log base 2 of u64 These facilities can either be used inside functions on dynamic data: int do_something(long q) { ...; y = ilog2(x) ...; } Or can be used to statically initialise global variables with constant values: unsigned n = ilog2(27); When performing static initialisation, the compiler will report "error: initializer element is not constant" if asked to take a log of zero or of something not reducible to a constant. They treat negative numbers as unsigned. When not dealing with a constant, they fall back to using fls() which permits them to use arch-specific log calculation instructions - such as BSR on x86/x86_64 or SCAN on FRV - if available. [akpm@osdl.org: MMC fix] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David Howells <dhowells@redhat.com> Cc: Wojtek Kaniewski <wojtekka@toxygen.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] Kprobes: Make kprobe modules more portableAnanth N Mavinakayanahalli1-1/+1
In an effort to make kprobe modules more portable, here is a patch that: o Introduces the "symbol_name" field to struct kprobe. The symbol->address resolution now happens in the kernel in an architecture agnostic manner. 64-bit powerpc users no longer have to specify the ".symbols" o Introduces the "offset" field to struct kprobe to allow a user to specify an offset into a symbol. o The legacy mechanism of specifying the kprobe.addr is still supported. However, if both the kprobe.addr and kprobe.symbol_name are specified, probe registration fails with an -EINVAL. o The symbol resolution code uses kallsyms_lookup_name(). So CONFIG_KPROBES now depends on CONFIG_KALLSYMS o Apparantly kprobe modules were the only legitimate out-of-tree user of the kallsyms_lookup_name() EXPORT. Now that the symbol resolution happens in-kernel, remove the EXPORT as suggested by Christoph Hellwig o Modify tcp_probe.c that uses the kprobe interface so as to make it work on multiple platforms (in its earlier form, the code wouldn't work, say, on powerpc) Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-12[PATCH] sparc64 audit syscall classes hookupAl Viro1-0/+4
... that should do it for all targets; the only remaining issues are mips (currently treated as non-biarch) and handling of other OS emulations (OSF/SunOS/Solaris/???). The latter would need to be assigned new AUDIT_ARCH_... ABI numbers anyway... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-07-10[PATCH] disallow modular binfmt_elf32Christoph Hellwig1-1/+1
Currently most architectures either always build binfmt_elf32 in the kernel image or make it a boolean option. Only sparc64 and s390 allow to build it modularly. This patch turns the option into a boolean aswell because elf requires various symbols that shouldn't be available to modules. The most urgent one is tasklist_lock whos export this patch series kills, but there are others like force_sgi aswell. Note that sparc doesn't allow a modular 32bit a.out handler either, and that would be the more useful case as only few people want 32bit sunos compatibility and 99.9% of all sparc64 users need 32bit linux native elf support. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: "David S. Miller" <davem@davemloft.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-20[SPARC64]: Move over to GENERIC_HARDIRQS.David S. Miller1-0/+4
This is the long overdue conversion of sparc64 over to the generic IRQ layer. The kernel image is slightly larger, but the BSS is ~60K smaller due to the reduced size of struct ino_bucket. A lot of IRQ implementation details, including ino_bucket, were moved out of asm-sparc64/irq.h and are now private to arch/sparc64/kernel/irq.c, and most of the code in irq.c totally disappeared. One thing that's different at the moment is IRQ distribution, we do it at enable_irq() time. If the cpu mask is ALL then we round-robin using a global rotating cpu counter, else we pick the first cpu in the mask to support single cpu targetting. This is similar to what powerpc's XICS IRQ support code does. This works fine on my UP SB1000, and the SMP build goes fine and runs on that machine, but lots of testing on different setups is needed. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-18[SPARC64]: Fix dependencies of HUGETLB_PAGE_SIZE_64KJean-Luc Léger1-1/+1
This patch fixes dependencies of HUGETLB_PAGE_SIZE_64K Signed-off-by: Jean-Luc Léger <jean-luc.leger@dspnet.fr.eu.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09[SPARC64]: Set ARCH_SELECT_MEMORY_MODELDavid S. Miller1-0/+3
Otherwise the build breaks with EXPERIMENTAL disabled because SPARSEMEM will not get selected properly. See mm/Kconfig for how that works. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-26[PATCH] bitops: sparc64: use generic bitopsAkinobu Mita1-0/+8
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove ffz() - remove __ffs() - remove generic_fls() - remove generic_fls64() - remove sched_find_first_bit() - remove ffs() - unless defined(ULTRA_HAS_POPULATION_COUNT) - remove generic_hweight{64,32,16,8}() - remove find_{next,first}{,_zero}_bit() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-22[SPARC64]: Add a secondary TSB for hugepage mappings.David S. Miller1-2/+2
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Use SLAB caches for TSB tables.David S. Miller1-0/+3
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Add SMT scheduling support for Niagara.David S. Miller1-0/+9
The mapping is a simple "(cpuid >> 2) == core" for now. Later we'll add more sophisticated code that will walk the sun4v machine description and figure this out from there. We should also add core mappings for jaguar and panther processors. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Move over to sparsemem.David S. Miller1-0/+6
This has been pending for a long time, and the fact that we waste a ton of ram on some configurations kind of pushed things over the edge. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-26Make Kprobes depend on modulesLinus Torvalds1-0/+1
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>
2006-01-11[SPARC64] arch/sparc64/Kconfig: fix HUGETLB_PAGE_SIZE_64K dependenciesAdrian Bunk1-1/+1
This patch fixes a typo in the dependencies of HUGETLB_PAGE_SIZE_64K. It might be more logical to rename the HUGETLB_PAGE_SIZE_*K dependencies to HUGETLB_PAGE_SIZE_*KB, but let's fix this bug first. This bug was reported by Jean-Luc Leger <reiga@dspnet.fr.eu.org>. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-08[PATCH] tiny: Make *[ug]id16 support optionalMatt Mackall1-5/+0
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>
2005-12-22[SPARC]: introduce a SPARC Kconfig symbolAdrian Bunk1-0/+4
Introduce a Kconfig symbol SPARC that is defined on both the sparc and sparc64 architectures. This symbol makes some dependencies more readable. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-11-07[PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menuPrasanna S Panchamukhi1-0/+13
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>
2005-09-07[PATCH] Kconfig fix (BLK_DEV_FD dependencies)viro@ZenIV.linux.org.uk1-0/+4
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>
2005-09-05[SPARC64]: Don't include drivers/firmware/KconfigDavid S. Miller1-2/+0
It's really not relevant for this platform in any way, after all. Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-30[SPARC64]: Use drivers/KconfigDavid S. Miller1-308/+20
And move some other stuff into drivers/sbus/char/Kconfig. Signed-off-by: David S. Miller <davem@davemloft.net>
2005-07-12Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6Linus Torvalds1-0/+2
2005-07-11[NET]: add a top-level Networking menu to *configSam Ravnborg1-1/+3
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>
2005-07-11[PATCH] I2C: Move hwmon drivers (1/3)Jean Delvare1-0/+2
Part 1: Configuration files and Makefiles. From: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-10[SPARC64]: Add SECCOMP support.David S. Miller1-0/+17
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-07-08[SPARC64]: Support CONFIG_HZDavid S. Miller1-0/+2
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-07-04[SPARC64/COMPAT]: Add some compat ioctl for ppdevRaphael Assenat1-0/+18
The following patch adds some ioctls to include/linux/compat_ioctl.h to allow using ppdev from the 32 bit user space on sparc64. This patch also adds the PPDEV option in the sparc64 menu, near Parallel printer support in the 'General machine setup' submenu. All those ioctls seem to be compatible, since (correct me if I'm wrong) they dont use the 'long' type. See include/linux/ppdev.h. The application I used to test the new ioctls only used the following: PPEXCL PPCLAIM PPNEGOT PPGETMODES PPRCONTROL PPWCONTROL PPDATADIR PPWDATA PPRDATA But I beleive that the other ioctls will work fine. Signed-off-by: David S. Miller <davem@davemloft.net>
2005-06-23[PATCH] make each arch use mm/KconfigDave Hansen1-0/+2
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>
2005-04-24[PATCH] missing dependency on sparc64Al Viro1-0/+1
CONFIG_HW_CONSOLE selects vt.c; without the stuff pulled by CONFIG_VT it will not build. Normally we get both in drivers/char/Kconfig and there HW_CONSOLE depends on VT. sparc64 does not pull drivers/char/Kconfig and has that sutff in arch/sparc64/Kconfig instead. However, it forgets to add the same dependency. As the result, turning VT off [which is possible] will end up with broken build. For no good reason... 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 Torvalds1-0/+630
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!