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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2021-10-12 08:26:39 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2021-10-25 08:01:02 +0200 |
| commit | 0221da5f56353c9b238ef51d5a24802ba67b8c56 (patch) | |
| tree | 4823b8d298eb678c20db4078c2ec8e1e13fa52e5 /cpukit/libcsupport | |
| parent | score: Optimize default idle task stack allocator (diff) | |
| download | rtems-0221da5f56353c9b238ef51d5a24802ba67b8c56.tar.bz2 | |
rtems: Fix rate monotonic statistics
The rate monotonic period statistics were affected by
rtems_cpu_usage_reset(). The logic to detect and work around a CPU
usage reset was broken.
The Thread_Contol::cpu_time_used is changed to contain the processor
time used throughout the entire lifetime of the thread. The new member
Thread_Contol::cpu_time_used_at_last_reset is added to contain the
processor time used at the time of the last reset through
rtems_cpu_usage_reset(). This decouples the resets of the CPU usage and
the rate monotonic period statistics.
Update #4528.
Diffstat (limited to 'cpukit/libcsupport')
| -rw-r--r-- | cpukit/libcsupport/src/__times.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/cpukit/libcsupport/src/__times.c b/cpukit/libcsupport/src/__times.c index 7bb7e0e9ca..a37c662654 100644 --- a/cpukit/libcsupport/src/__times.c +++ b/cpukit/libcsupport/src/__times.c @@ -65,7 +65,8 @@ clock_t _times( * of ticks since boot and the number of ticks executed by this * this thread. */ - _Thread_Get_CPU_time_used( _Thread_Get_executing(), &cpu_time_used ); + cpu_time_used = + _Thread_Get_CPU_time_used_after_last_reset( _Thread_Get_executing() ); ptms->tms_utime = ((clock_t) cpu_time_used) / tick_interval; return ptms->tms_stime; |