Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...

Pull perf/core trace improvements from Arnaldo Carvalho de Melo:

 * Don't stop synthesizing threads when one vanishes, this is for
   the existing threads when we start a tool like trace.

 * Use sched:sched_stat_runtime to provide a thread summary, this
   produces the same output as the 'trace summary' subcommand of
   tglx's original "trace" tool.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>