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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-03-03 07:02:03 +0100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-03-17 08:27:47 +0100 |
commit | d37adfe5dd82cc3c933eb521b8f800c342af0e52 (patch) | |
tree | 5f4a77976b9ae35594d00b0bb58e18bb62a9b541 /cpukit/score/src/threaddispatch.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/threaddispatch.c')
-rw-r--r-- | cpukit/score/src/threaddispatch.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/cpukit/score/src/threaddispatch.c b/cpukit/score/src/threaddispatch.c index 1b36c93fbb..ce5d118a22 100644 --- a/cpukit/score/src/threaddispatch.c +++ b/cpukit/score/src/threaddispatch.c @@ -108,11 +108,6 @@ void _Thread_Do_dispatch( Per_CPU_Control *cpu_self, ISR_Level level ) _ISR_Enable( level ); #endif - _Thread_Update_cpu_time_used( - executing, - &cpu_self->time_of_last_context_switch - ); - _User_extensions_Thread_switch( executing, heir ); _Thread_Save_fp( executing ); _Context_Switch( &executing->Registers, &heir->Registers ); |