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* Fix task-specific tracing on sparc64Bjoern B. Brandenburg2008-05-22
| | | | | The default implementation contained a bug in a macro. Also, add a cast to silence the compiler.
* record task type in feather trace time stampBjoern B. Brandenburg2008-05-22
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* Feather-Trace: use fixed size fieldsBjoern B. Brandenburg2008-05-22
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* Merge branch 'feather-trace'Bjoern B. Brandenburg2008-05-22
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| * Refactor Feather-TraceBjoern B. Brandenburg2008-05-19
| | | | | | | | | | - move platform dependent bits into arch/ - provide a default implementation (used for sparc64)
* | Add Feather-Trace support.Bjoern B. Brandenburg2008-05-22
|/ | | | | | | | - TICK - SCHED1 - SCHED2 - RELEASE - CXS
* Use binomial heaps as priority queues.Bjoern B. Brandenburg2008-05-19
| | | | | | The list-based priority queues did not perform well on the Niagara T2000. This heap-based implementation should perform much faster when queues are long.
* Merge branch 'release_refactor'Bjoern B. Brandenburg2008-05-14
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| * introduce release_at callback to LITMUS plugin interfaceBjoern B. Brandenburg2008-05-12
| | | | | | | | | | PFAIR needs to do things a bit differently. This callback will allow plugins to handle synchronous releases differently.
* | add task_rt() macroBjoern B. Brandenburg2008-05-14
|/ | | | Make code more readable and shorter.
* LITMUS: improve coreBjoern B. Brandenburg2008-05-10
| | | | | - give TRACE() messages sequence numbers - remove a some old, unused cruft
* LITMUS: avoid using the same stack on two CPUs in global schedulersBjoern B. Brandenburg2008-05-04
| | | | | This change fixes a race where a job could be executed on more than one CPU, which to random crashes.
* LITMUS: use no_rqlock_work to avoid ksoftirqd deadlockBjoern B. Brandenburg2008-05-02
| | | | | We can't use tasklets from within the scheduler. User no_rqlock_work instead.
* LITMUS: add framework for carrying out jobs after dropping rq locksBjoern B. Brandenburg2008-05-02
| | | | | Many things can't be done from within the scheduler. This framework should make it easer to defer them.
* LITMUS: rework rt_domain to not cause circular lockig dependenciesBjoern B. Brandenburg2008-05-02
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* sparc64: include LITMUS syscallsBjoern B. Brandenburg2008-05-01
| | | add LITMUS syscalls in jump table and unistd.h
* Feather-Trace: Make inclusion optionalBjoern2008-05-01
| | | | We need to disable Feather-Trace on the Niagara for now, and there is no reason to always include it, anyway.
* LITMUS: reorganize system callsBjoern B. Brandenburg2008-05-01
| | | | | | - this will make it easier to maintain it across multiple platforms and versions - also remove obsolete SRP system call
* FMLP: rename pi->fmlpBjoern B. Brandenburg2008-05-01
| | | | | pi is confusing, there are many PI schemes in the world. We implement the FMLP, thus we should label it as such.
* SRP: improve robustnessBjoern B. Brandenburg2008-05-01
| | | | | | | | The SRP implementation did not correctly address various suspension-related scenarios correctly. Now the need for SRP blocking is tested on each scheduling event. This ensures mutual exclusion under the SRP even in the face of unexpected suspensions, for example due to IO.
* update SRP implBjoern B. Brandenburg2008-05-01
| | | | This is the first step in cleaning up the SRP implementation.
* LITMUS: let plugins declare their willingness to allow synchronizationBjoern B. Brandenburg2008-05-01
| | | | | - don't let SRP be active under GSN-EDF - later, don't let FMLP be active under PFAIR, either
* Merge branch 'synch_quanta' into mergeBjoern B. Brandenburg2008-05-01
|\ | | | | | | | | | | | | | | | | | | | | Conflicts: litmus/edf_common.c litmus/sched_gsn_edf.c litmus/sched_psn_edf.c Minor clashes between sched_clock() -> litmus_clock() and jobs.c refactoring merged by hand. The result has been compile-tested.
| * LITMUS CORE: Release jobs with hrtimersJohn M. Calandrino2008-04-30
| | | | | | | | John's proposal for how to release jobs with hrtimers.
* | Merge branch 'synch_quanta'Bjoern B. Brandenburg2008-04-30
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| * add synchronized quanta supportJohn M. Calandrino2008-04-30
| | | | | | | | | | Modify offsets in such a way that quantum boundaries occur either synchronized or staggered (based on the kernel command line).
* | litmus: move job release functions to common codeBjoern B. Brandenburg2008-04-30
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* | litmus x86: hook up synchronous system callsBjoern B. Brandenburg2008-02-19
| | | | | | | | This exposes the new task release system calls to user space.
* | litmus: synchronous task release APIBjoern B. Brandenburg2008-02-19
|/ | | | | | | | | This adds the internals for two new systems calls: - sys_wait_for_ts_release() - sys_release_ts() The first system call suspends a task until the task systems is released with the second system call.
* add complete_n() call to the completion API.Bjoern B. Brandenburg2008-02-19
| | | | | This is usefule for releasing exactly n tasks without having to call compete() repeatedly.
* LITMUS 2008: Initial PortBjoern B. Brandenburg2008-02-13
| | | | | This introduces the core changes ported from LITMUS 2007. The kernel seems to work under QEMU, but many bugs probably remain.
* Pull dmi-2.6.24 into release branchLen Brown2008-01-23
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| * ACPI: make _OSI(Linux) console messages smarterLen Brown2008-01-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If BIOS invokes _OSI(Linux), the kernel response depends on what the ACPI DMI list knows about the system, and that is reflectd in dmesg: 1) System unknown to DMI: ACPI: BIOS _OSI(Linux) query ignored ACPI: DMI System Vendor: LENOVO ACPI: DMI Product Name: 7661W1P ACPI: DMI Product Version: ThinkPad T61 ACPI: DMI Board Name: 7661W1P ACPI: DMI BIOS Vendor: LENOVO ACPI: DMI BIOS Date: 10/18/2007 ACPI: Please send DMI info above to linux-acpi@vger.kernel.org ACPI: If "acpi_osi=Linux" works better, please notify linux-acpi@vger.kernel.org 2) System known to DMI, but effect of OSI(Linux) unknown: ACPI: DMI detected: Lenovo ThinkPad T61 ... ACPI: BIOS _OSI(Linux) query ignored via DMI ACPI: If "acpi_osi=Linux" works better, please notify linux-acpi@vger.kernel.org 3) System known to DMI, which disables _OSI(Linux): ACPI: DMI detected: Lenovo ThinkPad T61 ... ACPI: BIOS _OSI(Linux) query ignored via DMI 4) System known to DMI, which enable _OSI(Linux): ACPI: DMI detected: Lenovo ThinkPad T61 ACPI: Added _OSI(Linux) ... ACPI: BIOS _OSI(Linux) query honored via DMI cmdline overrides take precidence over the built-in default and the DMI prescribed default. cmdline "acpi_osi=Linux" results in: ACPI: BIOS _OSI(Linux) query honored via cmdline Signed-off-by: Len Brown <len.brown@intel.com>
| * DMI: create dmi_get_slot()Len Brown2008-01-23
| | | | | | | | | | | | | | This simply allows other sub-systems (such as ACPI) to access and print out slots in static dmi_ident[]. Signed-off-by: Len Brown <len.brown@intel.com>
| * DMI: move dmi_available declaration to linux/dmi.hLen Brown2008-01-23
| | | | | | | | Signed-off-by: Len Brown <len.brown@intel.com>
* | Revert "ACPI: Fan: Drop force_power_state acpi_device option"Len Brown2008-01-23
|/ | | | | | | | This reverts commit 93ad7c07ad487b036add8760dabcc35666a550ef. http://bugzilla.kernel.org/show_bug.cgi?id=9798 Signed-off-by: Len Brown <len.brown@intel.com>
* [MIPS] SMTC: Fix build error.Frank Rowand2008-01-21
| | | | | | | | Fix compile warning (which becomes compile error due to -Werror). Type of argument "flags" for spin_lock_irqsave() was incorrect in some functions. Signed-off-by: Frank Rowand <frank.rowand@am.sony.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* CRIS v10: vmlinux.lds.S: ix kernel oops on boot and use common definesJesper Nilsson2008-01-17
| | | | | | | | | | | | | | | | | | | | | | - Move alignment to page size of init data outside ifdef for BLK_DEV_INITRD. The reservation up to page size of memory after init data was previously not done if BLK_DEV_INITRD was undefined. This caused a kernel oops when init memory pages were freed after startup, data placed in the same page as the last init memory would also be freed and reused, with disastrous results. - Use macros for initcalls and .text sections. - Replace hardcoded page size constant with PAGE_SIZE define. - Change include/asm-cris/page.h to use the _AC macro to instead of testing __ASSEMBLY__. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Mikael Starvik <mikael.starvik@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lockdep: fix workqueue creation API lockdep interactionJohannes Berg2008-01-16
| | | | | | | | | | | | | | | | | | | | Dave Young reported warnings from lockdep that the workqueue API can sometimes try to register lockdep classes with the same key but different names. This is not permitted in lockdep. Unfortunately, I was unaware of that restriction when I wrote the code to debug workqueue problems with lockdep and used the workqueue name as the lockdep class name. This can obviously lead to the problem if the workqueue name is dynamic. This patch solves the problem by always using a constant name for the workqueue's lockdep class, namely either the constant name that was passed in or a string consisting of the variable name. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
* libata: correct handling of TSS DVDAlan Cox2008-01-15
| | | | | | | | | | | | Devices that misreport the validity bit for word 93 look like SATA. If they are on the blacklist then we must not test for SATA but assume 40 wire in the 40 wire case (The TSSCorp reports 80 wire on SATA it seems!) Signed-off-by: Alan Cox <alan@redhat.com> Cc: Tejun Heo <htejun@gmail.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86Linus Torvalds2008-01-15
|\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: x86: fix RTC_AIE with CONFIG_HPET_EMULATE_RTC x86: asm-x86/msr.h: pull in linux/types.h x86: fix boot crash on HIGHMEM4G && SPARSEMEM
| * x86: asm-x86/msr.h: pull in linux/types.hMike Frysinger2008-01-15
| | | | | | | | | | | | | | | | | | | | | | | | | | Since the msr.h header uses types like __u32, it should pull in linux/types.h. [ mingo@elte.hu: affects user-space that includes this header. We dont actually like user-space including raw kernel headers but it's a longstanding practice and it's easy for the kernel to be nice about this. ] Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'merge' of ↵Linus Torvalds2008-01-15
|\ \ | |/ |/| | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Fix boot failure on POWER6 [POWERPC] Workaround for iommu page alignment
| * [POWERPC] Fix boot failure on POWER6Paul Mackerras2008-01-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 473980a99316c0e788bca50996375a2815124ce1 added a call to clear the SLB shadow buffer before registering it. Unfortunately this means that we clear out the entries that slb_initialize has previously set in there. On POWER6, the hypervisor uses the SLB shadow buffer when doing partition switches, and that means that after the next partition switch, each non-boot CPU has no SLB entries to map the kernel text and data, which causes it to crash. This fixes it by reverting most of 473980a9 and instead clearing the 3rd entry explicitly in slb_initialize. This fixes the problem that 473980a9 was trying to solve, but without breaking POWER6. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2008-01-15
|\ \ | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Cacheops.h: Fix typo. [MIPS] Cobalt: Qube1 has no serial port so don't use it [MIPS] Cobalt: Fix ethernet interrupts for RaQ1 [MIPS] Kconfig fixes for BCM47XX platform
| * | [MIPS] Cacheops.h: Fix typo.Ralf Baechle2008-01-14
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | | Revert "writeback: introduce writeback_control.more_io to indicate more io"Linus Torvalds2008-01-15
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 2e6883bdf49abd0e7f0d9b6297fc3be7ebb2250b, as requested by Fengguang Wu. It's not quite fully baked yet, and while there are patches around to fix the problems it caused, they should get more testing. Says Fengguang: "I'll resend them both for -mm later on, in a more complete patchset". See http://bugzilla.kernel.org/show_bug.cgi?id=9738 for some of this discussion. Requested-by: Fengguang Wu <wfg@mail.ustc.edu.cn> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds2008-01-14
|\ \ | | | | | | | | | | | | | | | | | | | | | * 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c-sibyte: Fix an error path i2c: Driver IDs are optional i2c: Spelling fixes i2c-omap: Fix NULL pointer dereferencing
| * | i2c: Driver IDs are optionalJean Delvare2008-01-14
| | | | | | | | | | | | | | | | | | Document the fact that I2C driver IDs are optional. Signed-off-by: Jean Delvare <khali@linux-fr.org>
* | | CRIS: define __ARCH_WANT_SYS_RT_SIGSUSPEND in unistd.h for CRISJesper Nilsson2008-01-14
|/ / | | | | | | | | | | | | | | | | | | This allows us to use the commong sys_rt_sigsuspend instead of having our own. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Mikael Starvik <mikael.starvik@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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