perf tools: Skip dso front cache for indexed data file
Currently the dso maintains a front cache for faster symbol lookup,
but access to it should be synchronized when multi thread is used.
Also it doesn't help much if data file has callchains since it should
walk through the callchains for each sample so single cache is almost
meaningless.
So skip the cache if data file is indexed that means it can be
accessed using multiple threads at the same.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
1 file changed
