[PATCH v7 2/8] perf tests: Add testcase for auxiliary evlist

Improve test backward-ring-buffer, trace both enter and exit event of prctl() syscall, utilize auxiliary evlist to mmap enter and exit event into separated mmaps. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc:

[PATCH v7 2/8] perf tests: Add testcase for auxiliary evlist

Improve test backward-ring-buffer, trace both enter and exit event of prctl() syscall, utilize auxiliary evlist to mmap enter and exit event into separated mmaps. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Zefan Li Cc: He