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* Fix service level system call.Bjoern B. Brandenburg2007-10-05
| | | | This fixes some stupid typos.
* adaptive: set period and wcet based on first service levelBjoern B. Brandenburg2007-10-04
| | | | Make sure that the RT task starts out in a correct service level.
* adaptive: introduce service level system callsBjoern B. Brandenburg2007-10-04
| | | | | Allow user space to set up service levels, also allow RT tasks to query their current service level.
* Import race fix.Bjoern B. Brandenburg2007-10-04
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| * Fix long standing set_rt_params race by disallowing it.Bjoern B. Brandenburg2007-10-04
| | | | | | | | | | | | There really is no reason why RT params of a RT task should be changed. The sporadic task model does not allow for it, the schedulers don't expect it, and adaptive tasks will be implemented differently.
* | adaptive: introduce service levelBjoern B. Brandenburg2007-10-04
| | | | | | | | This patch adds fields for service levels to the rt_param struct.
* | Wrap task teardown.Bjoern B. Brandenburg2007-10-04
| | | | | | | | Provide a place to do generic tear-down work.
* | Fix RT scheduler tickBjoern B. Brandenburg2007-10-04
| | | | | | | | Update adaptive plugin initialization.
* | Merge with qemu branchBjoern B. Brandenburg2007-10-04
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| * Cleanup: Get rid of unneeded algo_tick indirection.Bjoern B. Brandenburg2007-10-04
| | | | | | | | | | Since all plugins use rt_scheduler_tick() anyway, we might as well get rid of the field.
* | adaptive: allow jobs to overrunBjoern B. Brandenburg2007-10-04
| | | | | | | | Do not forcefully preempt tasks.
* | Remove some really old left-overs.Bjoern B. Brandenburg2007-10-04
| | | | | | | | This is a long-overdue cleanup.`
* | Add adaptive scheduler based on GSN-EDF.Bjoern B. Brandenburg2007-10-04
|/ | | | This only introduces the necessary source files.
* Fix sleeping behavior.Bjoern B. Brandenburg2007-10-04
| | | | | | A dublication of prepare_task_for_next_period() caused GSN-EDF to wrongly calculate the next deadline of new jobs. This was fixed for the RTAS experiments.
* bugfix: don't forget to requeue linked task at the end of RT modeBjoern B. Brandenburg2007-09-25
| | | | This caused RT tasks to get lost.
* Clean up TRACEs.Bjoern B. Brandenburg2007-09-25
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* Add more info to TRACE_BUG_ON().Bjoern B. Brandenburg2007-09-25
| | | | A whole bunch of useful information.
* bugfix: don't use stale linked flagBjoern B. Brandenburg2007-09-25
| | | | | | When a job completion occured at the end of real-time mode it was possible for unlink to be called with entry->linked == NULL. As a solution, don't use a flag for linked, since it becomes stale too easily.
* Add more debug output to crash site.Bjoern B. Brandenburg2007-09-25
| | | | Where is it being called from?
* Bugfix: don't requeue blocking tasks.Bjoern B. Brandenburg2007-09-25
| | | | | Once the task gets scheduled even though it should be blocked, the system will crash.
* Add TRACE_BUG_ON() macro.Bjoern B. Brandenburg2007-09-25
| | | | | For debugging purposes, use where a kernel panic would not be very helpful and the system isn't going down anyway.
* Re-enable BUG_ON() in wake_up function.Bjoern B. Brandenburg2007-09-23
| | | | Also some debug infos.
* Use preempt_enable_no_resched() before calling schedule() anyway.Bjoern B. Brandenburg2007-09-23
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* Fix litmus_controlled initialization bug.Bjoern B. Brandenburg2007-09-23
| | | | | litmus_controlled was 0 until _after_ first successful wake up. Also adds some more debug info to mode switches.
* Access per-cpu variable non-preemptivelyBjoern B. Brandenburg2007-09-23
| | | | | Since SRP only works under partitioning, this is superfluous, but it makes Linux shut up (in debug builds).
* Fix PSN-EDF scheduling logic.Bjoern B. Brandenburg2007-09-23
| | | | This fixes a bug with the preemption and non-rt mode logic.
* Another sanity check.Bjoern B. Brandenburg2007-09-23
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* Make sufficient number of PI semaphores and SRP resources available.Bjoern B. Brandenburg2007-09-22
| | | | | Also fixes a case where the kernel would have returned to userspace with preemptions disabled.
* Prevent corruption from multiple Feather-Trace readers.Bjoern B. Brandenburg2007-09-22
| | | | Introduces Feather-Trace reader semaphore.
* Some cleanup and an attempt to pin point a race condition.Bjoern B. Brandenburg2007-09-22
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* Fix a race between np_mem_kill() and do_exit().Bjoern B. Brandenburg2007-09-22
| | | | | Don't try to reference signal related data structures after the tear down of the task has started.
* Allocate more semaphores for the test runs.Bjoern B. Brandenburg2007-09-22
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* reintroduce TS_EXIT_NP_* Feather-Trace events.Bjoern B. Brandenburg2007-09-17
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* PSN-EDF now seems to workBjoern B. Brandenburg2007-09-13
| | | | | I cannot reproduce any crashes under QEMU any more, and the code looks like it's ok. I'll test it on the real machine next.
* add flag based np-sectionsBjoern B. Brandenburg2007-09-13
| | | | | | This commit introduces the infrastructure for flag based np sections. It also features an overhauled GSN-EDF scheduler that respects the flags (and has less bugs).
* Merge with wait_for_job_release().Bjoern B. Brandenburg2007-08-23
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| * Add wait_for_job system callBjoern B. Brandenburg2007-08-21
| | | | | | | | Allow userspace to wait for a specific job release.
| * Add job_no to struct rt_timesBjoern B. Brandenburg2007-08-21
| | | | | | | | | | Adds the notion of a job sequence number to the LITMUS per-task state. This will allow userspace to refer to specific jobs.
| * Add more comments to rt_param.hBjoern B. Brandenburg2007-08-21
| | | | | | | | Some minor cleanups and some additional comments.
* | Change fifo_domain_t to rt_domain_t + bug fixes.Bjoern B. Brandenburg2007-08-23
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* | Introduce rt_domain_t.Bjoern B. Brandenburg2007-08-23
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* | Add generic list insertBjoern B. Brandenburg2007-08-23
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* Fix locking bug in GSN-EDF.RTSS07Bjoern B. Brandenburg2007-05-18
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* Fix partition handling of PSN-EDF.Bjoern B. Brandenburg2007-05-18
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* Make PI semaphores under PSN-EDF non-preemptable.Bjoern B. Brandenburg2007-05-17
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* Let PI semaphores inherit only inside a partition.Bjoern B. Brandenburg2007-05-17
| | | | | - Track hp.cpu_task per partition - inherit priority only from local tasks
* Prepare struct pi_semaphore for per-CPU PI protocol as required by FMLP.Bjoern B. Brandenburg2007-05-17
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* Restructure PI semaphores so that they are easier to trace.Bjoern B. Brandenburg2007-05-17
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* Add timestamps to semaphore functionsBjoern B. Brandenburg2007-05-17
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* Don't disable interrupts in semaphore syscalls.Bjoern B. Brandenburg2007-05-17
| | | | | We don't need to protect against interrupts in the semaphore functions since semaphores are never touched from interrupt context.
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