kallsyms__parse is called 4 times during perf record startup. Add a benchmark to measure its performance. Transition it to using the api io.h buffered reading, improving performance by ~8% or saving ~5% from perf record start up time.
Ian Rogers (2): perf bench: add kallsyms parsing lib kallsyms: parse using io api tools/lib/api/io.h | 3 ++ tools/lib/symbol/kallsyms.c | 81 +++++++++++++++++++------------------ tools/perf/bench/Build | 1 + tools/perf/bench/bench.h | 1 + tools/perf/builtin-bench.c | 1 + 5 files changed, 47 insertions(+), 40 deletions(-) -- 2.26.2.526.g744177e7f7-goog
