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* LITMUS: Use atomic ops to clear bit.Bjoern B. Brandenburg2008-05-09
| | | | | This is modeled after tasklets. Just writing a 0 does not have the desired effect on SPARC64.
* LITMUS: remove outdated commentBjoern B. Brandenburg2008-05-05
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* GSN-EDF: log relinking decisionsBjoern B. Brandenburg2008-05-05
| | | | For debugging, make relinking optimizations available in the TRACE() log.
* LITMUS: don't invoke plugin for non-real-time tasksBjoern B. Brandenburg2008-05-05
| | | | The plugins don't care about best-effort tasks. Don't bother them.
* LITMUS: disable Linux scheduler optimizationBjoern B. Brandenburg2008-05-05
| | | | | This caused LITMUS^RT real-time tasks to be missed, which in turn caused all kinds of inconsistent state.
* GSN-EDF: facilitate debuggingBjoern B. Brandenburg2008-05-04
| | | | Make CPU state available to gdb.
* EDF: don't arm timers multiple timesBjoern B. Brandenburg2008-05-04
| | | | Blocking and preemptions must take precedence over forced job completions.
* 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: don't let real-time tasks fork real-time tasks.Bjoern B. Brandenburg2008-05-03
| | | | The forked task will be a best-effort task.
* LITMUS: provide more debug infoBjoern B. Brandenburg2008-05-03
| | | | Added one message and improved another.
* Feather-Trace: fix section mismatch warningBjoern B. Brandenburg2008-05-03
| | | | Don't place events in __init functions.
* 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.
* Merge commit 'jupiter/debug' into debugBjoern B. Brandenburg2008-05-02
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| * LITMUS: rework rt_domain to not cause circular lockig dependenciesBjoern B. Brandenburg2008-05-02
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| * LITMUS: rework job migration codeBjoern B. Brandenburg2008-05-02
| | | | | | | | | | The old version had a significant window for races with interrupt handlers executing on other CPUs.
| * GSN-EDF: add extra debug infoBjoern B. Brandenburg2008-05-02
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* | LITMUS: don't let real-time tasks migrate by themselvesBjoern B. Brandenburg2008-05-02
|/ | | | | | | | A proper real-time migration works as follows: 1) transition to best-effort task 2) migrate to target CPU 3) update real-time parameters 4) transition to real-time task
* LITMUS: use litmus_clock() in sync.cBjoern B. Brandenburg2008-05-01
| | | | | sched_clock() is offset from litmus_clock(), jobs were being delayed for long times.
* sparc: force resched on IPIBjoern B. Brandenburg2008-05-01
| | | | | | | | | | | | This replicates 1a229e67e4cf08a539fc558d017a95ff03705ac5 for sparc64. This is what happens: smp_send_reschedule() -> smp_receive_signal() (smp.c) ~~> IPI ~~> xcall_receive_signal (ultra.S) ~~> soft interrupt (ttable.S) -> smp_receive_signal_client (smp.c) -> set_tsk_need_resched()
* sparc64: include LITMUS syscallsBjoern B. Brandenburg2008-05-01
| | | add LITMUS syscalls in jump table and unistd.h
* sparc64: enable LITMUS configuration optionsBjoern B. Brandenburg2008-05-01
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* 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+FMLP: reorganize codeBjoern B. Brandenburg2008-05-01
| | | | | - split SRP into its own file - rename litmus_sem.c to fmlp.c, since that is what it is
* 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.
* SRP: simplify codeBjoern B. Brandenburg2008-05-01
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* SRP: record owner in semaphoresBjoern B. Brandenburg2008-05-01
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* allow real-time tasks access to SRP resources (for setup)Bjoern B. Brandenburg2008-05-01
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* 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
* return the number of released tasksBjoern B. Brandenburg2008-05-01
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* 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).
* | work around the missing to reschedule problemBjoern B. Brandenburg2008-04-30
| | | | | | | | (dirty hack, could be done nicer)
* | 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.
* Linux 2.6.24v2.6.24Linus Torvalds2008-01-24
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* spi: omap2_mcspi PIO RX fixKalle Valo2008-01-24
| | | | | | | | | | | | | | | | | | | | | | Before transmission of the last word in PIO RX_ONLY mode rx+tx mode is enabled: /* prevent last RX_ONLY read from triggering * more word i/o: switch to rx+tx */ if (c == 0 && tx == NULL) mcspi_write_cs_reg(spi, OMAP2_MCSPI_CHCONF0, l); But because c is decremented after the test, c will never be zero and rx+tx will not be enabled. This breaks RX_ONLY mode PIO transfers. Fix it by decrementing c in the beginning of the various I/O loops. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Revert "mac80211: warn when receiving frames with unaligned data"Linus Torvalds2008-01-24
| | | | | | | | | | | | This reverts commit 81100eb80add328c4d2a377326f15aa0e7236398 for the release, to avoid the unnecessary warning noise that is only really relevant to wireless driver developers. The warning will probably go right back in after I cut the release, but at least we won't unnecessarily worry users. Acked-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2008-01-24
|\ | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Partially revert "Constify function pointer tables."
| * [SPARC64]: Partially revert "Constify function pointer tables."David S. Miller2008-01-24
| | | | | | | | | | | | | | | | | | | | | | | | | | This partially reverts 872e2be7c4056496c2871bd9b0f2fae6c374fe47 (Constify function pointer tables.) The solaris/socksys.c transformation wasn't valid: arch/sparc64/solaris/socksys.c:192: error: assignment of read-only variable ‘socksys_file_ops’ arch/sparc64/solaris/socksys.c:195: error: assignment of read-only variable ‘socksys_file_ops’ arch/sparc64/solaris/socksys.c:196: error: assignment of read-only variable ‘socksys_file_ops’ Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'release' of ↵Linus Torvalds2008-01-24
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: Revert "ACPI: Fan: Drop force_power_state acpi_device option" ACPI: EC: "DEBUG" needs to be defined earlier ACPI: EC: add leading zeros to debug messages ACPI: EC: fix dmesg spam regression ACPI: DMI blacklist to reduce console warnings on OSI(Linux) systems. ACPI: Add ThinkPad R61, ThinkPad T61 to OSI(Linux) white-list ACPI: make _OSI(Linux) console messages smarter ACPI: Delete Intel Customer Reference Board (CRB) from OSI(Linux) DMI list ACPI: on OSI(Linux), print needed DMI rather than requesting dmidecode output ACPI: create acpi_dmi_dump() DMI: create dmi_get_slot() DMI: move dmi_available declaration to linux/dmi.h ACPI: processor: Fix null pointer dereference in throttling
| * \ Pull dmi-2.6.24 into release branchLen Brown2008-01-23
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