Gert Wollny authored Nov 09, 2020 and Gert Wollny committed Nov 13, 2020

Author: Tomeu Vizoso <tomeu.vizoso@collabora.com> (v1)
v2: - Include perfetto_min.h only when perf tracing is enabled
    - Make stubs inline code so it can be optimized away.
    - Add compile with tracing info to configuration status
    - Use static for stubs (Chia-I Wu)
    - pass trace option as a string and add defines so that
      other tracing tools cold be accomodated
      (inspired by Chia-I Wu & Tomeu)
    - Use macros to wrap the trace calls

v3: - Use __attribute__((cleanup)) to handle trace_begin/trace_end
      instead of using macros to wrap the calls (Chia-I Wu)
    - remove cpp from language support

v4: - Fix __attribute__ check in meson.build
    - replace TRACE_FUNC macro to not take a paramter
    - move trace initialization to a seperate function
      (all suggestions by Chia-I Wu)

v5: use vsnprintf to avoid buffer overflow (John Bates)

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com> (v4)