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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-03-03 07:02:03 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-03-17 08:27:47 +0100 |
| commit | d37adfe5dd82cc3c933eb521b8f800c342af0e52 (patch) | |
| tree | 5f4a77976b9ae35594d00b0bb58e18bb62a9b541 /cpukit/score/src/schedulersmpstartidle.c | |
| parent | bsp/realview_pbx_a9_qemu: Fix compiler flags (diff) | |
| download | rtems-d37adfe5dd82cc3c933eb521b8f800c342af0e52.tar.bz2 | |
score: Fix CPU time used by executing threads
The CPU time used of a thread was previously maintained per-processor
mostly during _Thread_Dispatch(). However, on SMP configurations the
actual processor of a thread is difficult to figure out since thread
dispatching is a highly asynchronous process (e.g. via inter-processor
interrupts). Only the intended processor of a thread is known to the
scheduler easily. Do the CPU usage accounting during thread heir
updates in the context of the scheduler operations. Provide the
function _Thread_Get_CPU_time_used() to get the CPU usage of a thread
using proper locks to get a consistent value.
Close #2627.
Diffstat (limited to 'cpukit/score/src/schedulersmpstartidle.c')
| -rw-r--r-- | cpukit/score/src/schedulersmpstartidle.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/cpukit/score/src/schedulersmpstartidle.c b/cpukit/score/src/schedulersmpstartidle.c index de125d3323..0ffb628550 100644 --- a/cpukit/score/src/schedulersmpstartidle.c +++ b/cpukit/score/src/schedulersmpstartidle.c @@ -22,6 +22,7 @@ void _Scheduler_SMP_Start_idle( Scheduler_SMP_Context *self = _Scheduler_SMP_Get_self( context ); Scheduler_SMP_Node *node = _Scheduler_SMP_Thread_get_node( thread ); + _Scheduler_Thread_change_state( thread, THREAD_SCHEDULER_SCHEDULED ); node->state = SCHEDULER_SMP_NODE_SCHEDULED; _Thread_Set_CPU( thread, cpu ); |