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2012-10-14Merge branch 'modules-next' of ↵Linus Torvalds1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module signing support from Rusty Russell: "module signing is the highlight, but it's an all-over David Howells frenzy..." Hmm "Magrathea: Glacier signing key". Somebody has been reading too much HHGTTG. * 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (37 commits) X.509: Fix indefinite length element skip error handling X.509: Convert some printk calls to pr_devel asymmetric keys: fix printk format warning MODSIGN: Fix 32-bit overflow in X.509 certificate validity date checking MODSIGN: Make mrproper should remove generated files. MODSIGN: Use utf8 strings in signer's name in autogenerated X.509 certs MODSIGN: Use the same digest for the autogen key sig as for the module sig MODSIGN: Sign modules during the build process MODSIGN: Provide a script for generating a key ID from an X.509 cert MODSIGN: Implement module signature checking MODSIGN: Provide module signing public keys to the kernel MODSIGN: Automatically generate module signing keys if missing MODSIGN: Provide Kconfig options MODSIGN: Provide gitignore and make clean rules for extra files MODSIGN: Add FIPS policy module: signature checking hook X.509: Add a crypto key parser for binary (DER) X.509 certificates MPILIB: Provide a function to read raw data into an MPI X.509: Add an ASN.1 decoder X.509: Add simple ASN.1 grammar compiler ...
2012-10-12alpha: switch to saner kernel_execve() semanticsAl Viro1-0/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30alpha: switch to generic kernel_thread()Al Viro1-0/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-28Make most arch asm/module.h files use asm-generic/module.hDavid Howells1-0/+2
Use the mapping of Elf_[SPE]hdr, Elf_Addr, Elf_Sym, Elf_Dyn, Elf_Rel/Rela, ELF_R_TYPE() and ELF_R_SYM() to either the 32-bit version or the 64-bit version into asm-generic/module.h for all arches bar MIPS. Also, use the generic definition mod_arch_specific where possible. To this end, I've defined three new config bools: (*) HAVE_MOD_ARCH_SPECIFIC Arches define this if they don't want to use the empty generic mod_arch_specific struct. (*) MODULES_USE_ELF_RELA Arches define this if their modules can contain RELA records. This causes the Elf_Rela mapping to be emitted and allows apply_relocate_add() to be defined by the arch rather than have the core emit an error message. (*) MODULES_USE_ELF_REL Arches define this if their modules can contain REL records. This causes the Elf_Rel mapping to be emitted and allows apply_relocate() to be defined by the arch rather than have the core emit an error message. Note that it is possible to allow both REL and RELA records: m68k and mips are two arches that do this. With this, some arch asm/module.h files can be deleted entirely and replaced with a generic-y marker in the arch Kbuild file. Additionally, I have removed the bits from m32r and score that handle the unsupported type of relocation record as that's now handled centrally. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-08-19alpha: Use new generic strncpy_from_user() and strnlen_user()Michael Cree1-0/+2
Similar to x86/sparc/powerpc implementations except: 1) we implement an extremely efficient has_zero()/find_zero() sequence with both prep_zero_mask() and create_zero_mask() no-operations. 2) Our output from prep_zero_mask() differs in that only the lowest eight bits are used to represent the zero bytes nevertheless it can be safely ORed with other similar masks from prep_zero_mask() and forms input to create_zero_mask(), the two fundamental properties prep_zero_mask() must satisfy. Tests on EV67 and EV68 CPUs revealed that the generic code is essentially as fast (to within 0.5% of CPU cycles) of the old Alpha specific code for large quadword-aligned strings, despite the 30% extra CPU instructions executed. In contrast, the generic code for unaligned strings is substantially slower (by more than a factor of 3) than the old Alpha specific code. Signed-off-by: Michael Cree <mcree@orcon.net.nz> Acked-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30ipc: use Kconfig options for __ARCH_WANT_[COMPAT_]IPC_PARSE_VERSIONWill Deacon1-0/+1
Rather than #define the options manually in the architecture code, add Kconfig options for them and select them there instead. This also allows us to select the compat IPC version parsing automatically for platforms using the old compat IPC interface. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-24Merge branch 'timers-core-for-linus' of ↵Linus Torvalds1-3/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner. Various trivial conflict fixups in arch Kconfig due to addition of unrelated entries nearby. And one slightly more subtle one for sparc32 (new user of GENERIC_CLOCKEVENTS), fixed up as per Thomas. * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits) timekeeping: Fix a few minor newline issues. time: remove obsolete declaration ntp: Fix a stale comment and a few stray newlines. ntp: Correct TAI offset during leap second timers: Fixup the Kconfig consolidation fallout x86: Use generic time config unicore32: Use generic time config um: Use generic time config tile: Use generic time config sparc: Use: generic time config sh: Use generic time config score: Use generic time config s390: Use generic time config openrisc: Use generic time config powerpc: Use generic time config mn10300: Use generic time config mips: Use generic time config microblaze: Use generic time config m68k: Use generic time config m32r: Use generic time config ...
2012-05-21Merge branch 'smp-hotplug-for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull smp hotplug cleanups from Thomas Gleixner: "This series is merily a cleanup of code copied around in arch/* and not changing any of the real cpu hotplug horrors yet. I wish I'd had something more substantial for 3.5, but I underestimated the lurking horror..." Fix up trivial conflicts in arch/{arm,sparc,x86}/Kconfig and arch/sparc/include/asm/thread_info_32.h * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (79 commits) um: Remove leftover declaration of alloc_task_struct_node() task_allocator: Use config switches instead of magic defines sparc: Use common threadinfo allocator score: Use common threadinfo allocator sh-use-common-threadinfo-allocator mn10300: Use common threadinfo allocator powerpc: Use common threadinfo allocator mips: Use common threadinfo allocator hexagon: Use common threadinfo allocator m32r: Use common threadinfo allocator frv: Use common threadinfo allocator cris: Use common threadinfo allocator x86: Use common threadinfo allocator c6x: Use common threadinfo allocator fork: Provide kmemcache based thread_info allocator tile: Use common threadinfo allocator fork: Provide weak arch_release_[task_struct|thread_info] functions fork: Move thread info gfp flags to header fork: Remove the weak insanity sh: Remove cpu_idle_wait() ...
2012-05-21alpha: Use generic time configAnna-Maria Gleixner1-3/+1
Signed-off-by: Anna-Maria Gleixner <anna-maria@glx-um.de> Acked-by: Matt Turner <mattst88@gmail.com> Link: http://lkml.kernel.org/r/20120518163107.510619939@glx-um.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-05-05init_task: Replace CONFIG_HAVE_GENERIC_INIT_TASKThomas Gleixner1-1/+0
Now that all archs except ia64 are converted, replace the config and let the ia64 select CONFIG_ARCH_INIT_TASK Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20120503085035.867948914@linutronix.de
2012-05-05alpha: Use generic init_taskThomas Gleixner1-0/+1
Identical code. Use the generic version. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Matt Turner <mattst88@gmail.com> Link: http://lkml.kernel.org/r/20120503085034.162634519@linutronix.de
2012-05-02alpha: VGA_HOSE depends on VGA_CONSOLEMatt Turner1-1/+1
arch/alpha/kernel/console.c:locate_and_init_vga uses vga_con, causing build failures if VGA_CONSOLE was not set and MARVEL, TITAN, DP264, or GENERIC alpha system types were set. Reported-by: Raúl Porcel <armin76@gentoo.org> Signed-off-by: Matt Turner <mattst88@gmail.com>
2012-04-26alpha: Use generic idle thread allocationThomas Gleixner1-0/+1
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Link: http://lkml.kernel.org/r/20120420124557.914631081@linutronix.de
2011-11-28alpha: switch to GENERIC_PCI_IOMAPMichael S. Tsirkin1-0/+1
alpha copied pci_iomap from generic code to avoid pulling the rest of iomap.c in. Since that's in a separate file now, we can reuse the common implementation. The only difference is handling of nocache flag, that turns out to be done correctly by the generic code since arch/alpha/include/asm/io.h defines ioremap_nocache same as ioremap. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-11-24lib: move GENERIC_IOMAP to lib/KconfigMichael S. Tsirkin1-4/+0
define GENERIC_IOMAP in a central location instead of all architectures. This will be helpful for the follow-up patch which makes it select other configs. Code is also a bit shorter this way. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-11-06Merge branch 'trivial' of ↵Linus Torvalds1-5/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild * 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: scsi: drop unused Kconfig symbol pci: drop unused Kconfig symbol stmmac: drop unused Kconfig symbol x86: drop unused Kconfig symbol powerpc: drop unused Kconfig symbols powerpc: 40x: drop unused Kconfig symbol mips: drop unused Kconfig symbols openrisc: drop unused Kconfig symbols arm: at91: drop unused Kconfig symbol samples: drop unused Kconfig symbol m32r: drop unused Kconfig symbol score: drop unused Kconfig symbols sh: drop unused Kconfig symbol um: drop unused Kconfig symbol sparc: drop unused Kconfig symbol alpha: drop unused Kconfig symbol Fix up trivial conflict in drivers/net/ethernet/stmicro/stmmac/Kconfig as per Michal: the STMMAC_DUAL_MAC config variable is still unused and should be deleted.
2011-10-31alpha: drop unused Kconfig symbolPaul Bolle1-5/+0
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Reviewed-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-09-14alpha, gpio: GENERIC_GPIO default must be nBen Hutchings1-1/+1
Since GPIOLIB is optional on alpha, GENERIC_GPIO must not be selected by default. If GPIOLIB is enabled, it will select GENERIC_GPIO. See <http://bugs.debian.org/638696> for an example of what 'def_bool y' breaks. Reported-by: Michael Cree <mcree@orcon.net.nz> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-03Merge branch 'apei' into apei-releaseLen Brown1-0/+1
Some trivial conflicts due to other various merges adding to the end of common lists sooner than this one. arch/ia64/Kconfig arch/powerpc/Kconfig arch/x86/Kconfig lib/Kconfig lib/Makefile Signed-off-by: Len Brown <len.brown@intel.com>
2011-08-03Add Kconfig option ARCH_HAVE_NMI_SAFE_CMPXCHGHuang Ying1-0/+1
cmpxchg() is widely used by lockless code, including NMI-safe lockless code. But on some architectures, the cmpxchg() implementation is not NMI-safe, on these architectures the lockless code may need a spin_trylock_irqsave() based implementation. This patch adds a Kconfig option: ARCH_HAVE_NMI_SAFE_CMPXCHG, so that NMI-safe lockless code can depend on it or provide different implementation according to it. On many architectures, cmpxchg is only NMI-safe for several specific operand sizes. So, ARCH_HAVE_NMI_SAFE_CMPXCHG define in this patch only guarantees cmpxchg is NMI-safe for sizeof(unsigned long). Signed-off-by: Huang Ying <ying.huang@intel.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Richard Henderson <rth@twiddle.net> CC: Mikael Starvik <starvik@axis.com> Acked-by: David Howells <dhowells@redhat.com> CC: Yoshinori Sato <ysato@users.sourceforge.jp> CC: Tony Luck <tony.luck@intel.com> CC: Hirokazu Takata <takata@linux-m32r.org> CC: Geert Uytterhoeven <geert@linux-m68k.org> CC: Michal Simek <monstr@monstr.eu> Acked-by: Ralf Baechle <ralf@linux-mips.org> CC: Kyle McMartin <kyle@mcmartin.ca> CC: Martin Schwidefsky <schwidefsky@de.ibm.com> CC: Chen Liqin <liqin.chen@sunplusct.com> CC: "David S. Miller" <davem@davemloft.net> CC: Ingo Molnar <mingo@redhat.com> CC: Chris Zankel <chris@zankel.net> Signed-off-by: Len Brown <len.brown@intel.com>
2011-06-09pcspkr: Cleanup Kconfig dependenciesRalf Baechle1-0/+1
Lenghty lists of the kind "depends on ARCH1 || ARCH2 ... || ARCH123" are usually either wrong or too coarse grained. Or plain an ugly sin. [ tglx: Fixed up amigaone ] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linux-alpha@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linuxppc-dev@lists.ozlabs.org Cc: Gerhard Pircher <gerhard_pircher@gmx.net> Link: http://lkml.kernel.org/r/20110601180610.984881988@duck.linux-mips.net Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-05-26arch: remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT}Akinobu Mita1-4/+0
By the previous style change, CONFIG_GENERIC_FIND_NEXT_BIT, CONFIG_GENERIC_FIND_BIT_LE, and CONFIG_GENERIC_FIND_LAST_BIT are not used to test for existence of find bitops anymore. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Greg Ungerer <gerg@uclinux.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25alpha: hook up gpiolib supportMark Brown1-0/+4
Allow people to use gpiolib on Alpha if they want to, mostly for build coverage. The header is a stright copy of that for Microblaze, which in turn was taken from PowerPC. [akpm@linux-foundation.org: define GENERIC_GPIO] Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-30genirq: Remove the now obsolete config options and select statementsThomas Gleixner1-1/+0
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-29alpha: Use generic show_interrupts()Thomas Gleixner1-0/+1
The only subtle difference is that alpha uses ACTUAL_NR_IRQS and prints the IRQF_DISABLED flag. Change the generic implementation to deal with ACTUAL_NR_IRQS if defined. The IRQF_DISABLED printing is pointless, as we nowadays run all interrupts with irqs disabled. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-02alpha: Enable GENERIC_HARDIRQS_NO_DEPRECATEDThomas Gleixner1-0/+1
All interrupt chips are converted. Mark it clean. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Matt Turner <mattst88@gmail.com>
2011-01-21alpha: Use generic irq KconfigThomas Gleixner1-13/+3
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Henderson <rth@twiddle.net>
2011-01-21genirq: Remove __do_IRQThomas Gleixner1-3/+0
All architectures are finally converted. Remove the cruft. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Mike Frysinger <vapier@gentoo.org> Cc: David Howells <dhowells@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Michal Simek <monstr@monstr.eu> Acked-by: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Jeff Dike <jdike@addtoit.com>
2011-01-17alpha: add GENERIC_HARDIRQS_NO__DO_IRQ to KconfigMatt Turner1-0/+3
Acked-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Matt Turner <mattst88@gmail.com>
2010-10-28Merge branch 'kconfig' of ↵Linus Torvalds1-4/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (38 commits) kbuild: convert `arch/tile' to the kconfig mainmenu upgrade README: cite nconfig Revert "kconfig: Temporarily disable dependency warnings" kconfig: Use PATH_MAX instead of 128 for path buffer sizes. kconfig: Fix realloc usage() kconfig: Propagate const kconfig: Don't go out from read config loop when you read new symbol kconfig: fix menuconfig on debian lenny kbuild: migrate all arch to the kconfig mainmenu upgrade kconfig: expand file names kconfig: use the file's name of sourced file kconfig: constify file name kconfig: don't emit warning upon rootmenu's prompt redefinition kconfig: replace KERNELVERSION usage by the mainmenu's prompt kconfig: delay gconf window initialization kconfig: expand by default the rootmenu's prompt kconfig: add a symbol string expansion helper kconfig: regen parser kconfig: implement the `mainmenu' directive kconfig: allow PACKAGE to be defined on the compiler's command-line ... Fix up trivial conflict in arch/mn10300/Kconfig
2010-10-26alpha: enable ARCH_DMA_ADDR_T_64BITFUJITA Tomonori1-0/+3
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Matt Turner <mattst88@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-18irq_work: Add generic hardirq context callbacksPeter Zijlstra1-0/+1
Provide a mechanism that allows running code in IRQ context. It is most useful for NMI code that needs to interact with the rest of the system -- like wakeup a task to drain buffers. Perf currently has such a mechanism, so extract that and provide it as a generic feature, independent of perf so that others may also benefit. The IRQ context callback is generated through self-IPIs where possible, or on architectures like powerpc the decrementer (the built-in timer facility) is set to generate an interrupt immediately. Architectures that don't have anything like this get to do with a callback from the timer tick. These architectures can call irq_work_run() at the tail of any IRQ handlers that might enqueue such work (like the perf IRQ handler) to avoid undue latencies in processing the work. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [ various fixes ] Signed-off-by: Huang Ying <ying.huang@intel.com> LKML-Reference: <1287036094.7768.291.camel@yhuang-dev> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-10-12Merge branch 'kbuild/rc-fixes' into kbuild/kconfigMichal Marek1-4/+0
We need to revert the temporary hack in 71ebc01, hence the merge.
2010-09-19kbuild: migrate all arch to the kconfig mainmenu upgradeArnaud Lacombe1-4/+0
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Michal Marek <mmarek@suse.cz>
2010-07-27time: Kill off CONFIG_GENERIC_TIMEJohn Stultz1-4/+0
Now that all arches have been converted over to use generic time via clocksources or arch_gettimeoffset(), we can remove the GENERIC_TIME config option and simplify the generic code. Signed-off-by: John Stultz <johnstul@us.ibm.com> LKML-Reference: <1279068988-21864-4-git-send-email-johnstul@us.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-05-27alpha: use asm-generic/scatterlist.hFUJITA Tomonori1-0/+3
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-26Convert alpha to use clocksources instead of arch_gettimeoffsetJohn Stultz1-4/+0
Alpha has a tsc like rpcc counter that it uses to manage time. This can be converted to an actual clocksource instead of utilizing the arch_gettimeoffset method that is really only there for legacy systems with no continuous counter. Further cleanups could be made if alpha converted to the clockevent model. CC: Thomas Gleixner <tglx@linutronix.de> CC: Richard Henderson <rth@twiddle.net> Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Tested-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Matt Turner <mattst88@gmail.com> Signed-off-by: John Stultz <johnstul@us.ibm.com>
2010-05-19Merge branch 'timers-for-linus-cleanups' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: avr32: Fix typo in read_persistent_clock() sparc: Convert sparc to use read/update_persistent_clock cris: Convert cris to use read/update_persistent_clock m68k: Convert m68k to use read/update_persistent_clock m32r: Convert m32r to use read/update_peristent_clock blackfin: Convert blackfin to use read/update_persistent_clock ia64: Convert ia64 to use read/update_persistent_clock avr32: Convert avr32 to use read/update_persistent_clock h8300: Convert h8300 to use read/update_persistent_clock frv: Convert frv to use read/update_persistent_clock mn10300: Convert mn10300 to use read/update_persistent_clock alpha: Convert alpha to use read/update_persistent_clock xtensa: Fix unnecessary setting of xtime time: Clean up direct xtime usage in xen
2010-03-13alpha: Convert alpha to use read/update_persistent_clockJohn Stultz1-0/+3
This patch converts the alpha architecture to use the generic read_persistent_clock and update_persistent_clock interfaces, reducing the amount of arch specific code we have to maintain, and allowing for further cleanups in the future. I have not built or tested this patch, so help from arch maintainers would be appreciated. igned-off-by: John Stultz <johnstul@us.ibm.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <1267675049-12337-2-git-send-email-johnstul@us.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-03-12dma-mapping: alpha: use include/linux/pci-dma-compat.hFUJITA Tomonori1-0/+1
This converts Alpha to use include/linux/pci-dma-compat.h. Alpha is the only architecutre that implements the PCI DMA API in the own way. That makes it difficult to implement the generic DMA API via the PCI bus specific DMA API. The generic DMA API calls the PCI DMA API implementation in arch/alpha/kernel/pci_iommu.c on non Jensen systems. It calls the DMA API in arch/alpha/kernel/pci-noop.c on Jensen systems. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Greg KH <greg@kroah.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12pci-dma: alpha: use include/linux/pci-dma.hFUJITA Tomonori1-0/+3
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Matt Turner <mattst88@gmail.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-18alpha: Add minimal support for software performance eventsMichael Cree1-0/+1
In the kernel the patch enables configuration of the perf event option, adds the perf_event_open syscall, and includes a minimal architecture specific asm/perf_event.h header file. Signed-off-by: Michael Cree <mcree@orcon.net.nz> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Matt Turner <mattst88@gmail.com>
2009-09-22alpha: convert to use arch_gettimeoffset()john stultz1-0/+8
Converts alpha to use GENERIC_TIME via the arch_getoffset() infrastructure, reducing the amount of arch specific code we need to maintain. I suspect the alpha arch could even be further improved to provide and rpcc() based clocksource, but not having the hardware, I don't feel comfortable attempting the more complicated conversion (but I'd be glad to help if anyone else is interested). [akpm@linux-foundation.org: fix build] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29alpha: use syscall wrappersIvan Kokshaysky1-0/+1
Convert OSF syscalls and add alpha specific SYSCALL_ALIAS() macro. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20container freezer: implement freezer cgroup subsystemMatt Helsley1-0/+1
This patch implements a new freezer subsystem in the control groups framework. It provides a way to stop and resume execution of all tasks in a cgroup by writing in the cgroup filesystem. The freezer subsystem in the container filesystem defines a file named freezer.state. Writing "FROZEN" to the state file will freeze all tasks in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in the cgroup. Reading will return the current state. * Examples of usage : # mkdir /containers/freezer # mount -t cgroup -ofreezer freezer /containers # mkdir /containers/0 # echo $some_pid > /containers/0/tasks to get status of the freezer subsystem : # cat /containers/0/freezer.state RUNNING to freeze all tasks in the container : # echo FROZEN > /containers/0/freezer.state # cat /containers/0/freezer.state FREEZING # cat /containers/0/freezer.state FROZEN to unfreeze all tasks in the container : # echo RUNNING > /containers/0/freezer.state # cat /containers/0/freezer.state RUNNING This is the basic mechanism which should do the right thing for user space task in a simple scenario. It's important to note that freezing can be incomplete. In that case we return EBUSY. This means that some tasks in the cgroup are busy doing something that prevents us from completely freezing the cgroup at this time. After EBUSY, the cgroup will remain partially frozen -- reflected by freezer.state reporting "FREEZING" when read. The state will remain "FREEZING" until one of these things happens: 1) Userspace cancels the freezing operation by writing "RUNNING" to the freezer.state file 2) Userspace retries the freezing operation by writing "FROZEN" to the freezer.state file (writing "FREEZING" is not legal and returns EIO) 3) The tasks that blocked the cgroup from entering the "FROZEN" state disappear from the cgroup's set of tasks. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: export thaw_process] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Tested-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16Alpha Miata: remove dead URLAdrian Bunk1-2/+1
Remove a dead URL. Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-06Introduce HAVE_AOUT symbol to remove hard-coded arch list for BINFMT_AOUTDavid Woodhouse1-0/+1
HAVE_AOUT doesn't quite do the same thing as the recently removed ARCH_SUPPORTS_AOUT config option. That was set even on platforms where binfmt_aout isn't supported, although it's not entirely clear why. So it's best just to introduce a new symbol, handled consistently with other similar HAVE_xxx symbols; with a simple 'select' in the arch Kconfig. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-06Remove redundant CONFIG_ARCH_SUPPORTS_AOUTDavid Woodhouse1-3/+0
We don't need this any more; arguably we never really did. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-24alpha: remove the unused ALPHA_CORE_AGP optionAdrian Bunk1-5/+0
The real option is named AGP_ALPHA_CORE. Reviewed-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-26alpha: convert to generic helpers for IPI function callsJens Axboe1-0/+1
This converts alpha to use the new helpers for smp_call_function() and friends, and adds support for smp_call_function_single(). Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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