Beat Bolli a27eecea75 wrapper: use trace2 counters to collect fsync stats ...

As mentioned in the thread starting at [1], trace2 counters should be
used to count events instead of ad-hoc static variables.

Convert the two fsync static variables to trace2 counters, reducing the
coupling between wrapper.c and the trace2 subsystem. Adjust t/t5351 to
match the trace2 counter output format.

The counters are not per-thread because the ones being replaced also
were not.

[1] https://lore.kernel.org/git/20230627195251.1973421-2-calvinwan@google.com/

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2023-07-20 11:52:53 -07:00

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