logpipe: allow log_pipe_queue() to be tail-call-optimized #426
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Signed-off-by: Balazs Scheidler <balazs.scheidler@axoflow.com>
OverOrion
approved these changes
Jan 2, 2025
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This patch refactors log_pipe_queue() to allow tail-call-optimization, meaning gcc uses a jmp to "call" the next queue method instead of a call, thereby eliminating the stack frame of log_pipe_queue().
This means that stacktraces are shorter when measuring them with perf and may also improve a bit of performance, although it was 2-3% in my measurements, which could easily be attributed to jitter.