From 0221da5f56353c9b238ef51d5a24802ba67b8c56 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Tue, 12 Oct 2021 08:26:39 +0200 Subject: 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. --- cpukit/libcsupport/src/__times.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'cpukit/libcsupport') 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; -- cgit v1.2.3