| Commit message (Collapse) | Author | Age |
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Setting FT_TASK_TRACE_MAJOR, LOG_MAJOR, FT_TRACE_MAJOR to 0
allows to have them automatically assigned by the kernel
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GSN-EDF and friends rely on being called even if there is currently
no runnable real-time task on the runqueue for (at least) two reasons:
1) To initiate migrations. LITMUS^RT pull tasks for migrations; this requires
plugins to be called even if no task is currently present.
2) To maintain invariants when jobs block.
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- remove the call to litmus_tick() from scheduler_tick() just after
having performed the class task_tick() and integrate
litmus_tick() in task_tick_litmus()
- task_tick_litmus() is the handler for the litmus class task_tick()
method. It is called in non-queued mode from scheduler_tick()
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Having GSN-EDF log so many things each tick is useful
when tracking down race conditions, but it also makes
it really hard to find anything else. Thus, turn it off by
default but leave it in for future debugging fun.
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- Binomial heap "heap" names conflicted with priority heap
of cgroup in kernel
- This patch change binomial heap "heap" names in "bheap"
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- insert arm_release_timer() in add_relese() path
- arm_release_timer() uses __hrtimer_start_range_ns() instead of
hrtimer_start() to avoid deadlock on rq->lock.
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infrastructure
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Still to be merged:
- arm_release_timer() with no rq locking
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Use kfifo [kernel/kfifo.c] to implement the ring buffer used
for sched_trace (TRACE() and TRACE_TASK() macros)
This patch also includes some reorganization of sched_trace.c code
and some fixes:
- 1c39c59b3 Fix GFP_KERNEL in rb_alloc_buf with interrupt disabled.
- 193ad2688 Let TRACE() log buffer size and comment converge.
- 6195e2ae8 re-enable capturing of printk() messages in TRACE() logs.
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- fix requesting more than 2^11 pages (MAX_ORDER)
to system allocator
Still to be merged:
- feather-trace generic implementation
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Port 2008.3 Core LITMUS^RT infrastructure to Linux 2.6.32
litmus_sched_class implements 4 new methods:
- prio_changed:
void
- switched_to:
void
- get_rr_interval:
return infinity (i.e., 0)
- select_task_rq:
return current cpu
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