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Running 'perf record' with no target (-a, -p, -t, etc) will now collect
system wide data.
Commiter notes:
Testing it:
[root@jouet ~]# perf record
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.351 MB perf.data (366 samples) ]
#
is equivalent to:
# perf record -a
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.411 MB perf.data (978 samples) ]
#
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170217170018.GA15389@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
483635a9d0