[PATCH 1/3] perf tools: Add perf_evsel__read_size function

Currently we use the size of struct perf_counts_values to read the event, which prevents us to put any new member to the struct. Adding perf_evsel__read_size to return size of the buffer needed for event read. Link: http://lkml.kernel.org/n/tip-cfc3dmil3tlzezzxtyi9f...@git.kernel.org

[PATCH 1/3] perf tools: Add perf_evsel__read_size function

Currently we use the size of struct perf_counts_values to read the event, which prevents us to put any new member to the struct. Adding perf_evsel__read_size to return size of the buffer needed for event read. Link: http://lkml.kernel.org/n/tip-cfc3dmil3tlzezzxtyi9f...@git.kernel.org