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Perf trace maybe fix - "We were trying to trace before the os was awake"

This commit is contained in:
rusefi 2019-11-21 15:31:55 -05:00
parent 4faca85fdd
commit 4b4678074b
1 changed files with 6 additions and 1 deletions
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7
firmware/development/perf_trace.cpp
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@ -26,19 +26,23 @@ struct TraceEntry
uint32_t Timestamp; uint32_t Timestamp;
}; };
// Ensure that the struct is the size we think it is - the binary layout is important
static_assert(sizeof(TraceEntry) == 8); static_assert(sizeof(TraceEntry) == 8);
// This buffer stores a trace - we write the full buffer once, then disable tracing
static TraceEntry s_traceBuffer[TRACE_BUFFER_LENGTH]; static TraceEntry s_traceBuffer[TRACE_BUFFER_LENGTH];
static size_t s_nextIdx = 0; static size_t s_nextIdx = 0;
static bool s_isTracing = true; static bool s_isTracing = false;
void perfEventImpl(PE event, EPhase phase, uint8_t data) void perfEventImpl(PE event, EPhase phase, uint8_t data)
{ {
// Bail if we aren't allowed to trace
if constexpr (!ENABLE_PERF_TRACE) { if constexpr (!ENABLE_PERF_TRACE) {
return; return;
} }
// Bail if we aren't tracing
if (!s_isTracing) { if (!s_isTracing) {
return; return;
} }
@ -67,6 +71,7 @@ void perfEventImpl(PE event, EPhase phase, uint8_t data)
entry.Event = event; entry.Event = event;
entry.Phase = phase; entry.Phase = phase;
// Get the current active interrupt - this is the "thread ID"
entry.ThreadId = static_cast<uint8_t>(SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk); entry.ThreadId = static_cast<uint8_t>(SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk);
entry.Timestamp = timestamp; entry.Timestamp = timestamp;
entry.Data = data; entry.Data = data;