Add ftrace markers
This logs to a tracefs filesystem which can be viewed in tools such as gpuvis to see precise timings of activities in relation to other trace markers in X or graphic drivers. This patch is loosely based on D23114. Though modified with thread safety, support for string building, and a RAII pattern for durations. Ultimately that expanded it somewhat.
autotests/test_ftrace.cpp
0 → 100644
ftrace.cpp
0 → 100644
ftrace.h
0 → 100644
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