libperf: Setup initial evlist::all_cpus value

Jann Horn reported crash in perf ftrace because evlist::all_cpus isn't
initialized if there's evlist without events, which is the case for perf
ftrace.

Adding initial initialization of evlist::all_cpus from given cpus,
regardless of events in the evlist.

Fixes: 7736627b865d ("perf stat: Use affinity for closing file descriptors")
Reported-by: Jann Horn <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Acked-by: Andi Kleen <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions