perf evlist: Check that there is a thread_map when preparing a workload
authorArnaldo Carvalho de Melo <acme@redhat.com>
Fri, 10 Oct 2014 17:29:49 +0000 (14:29 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Tue, 14 Oct 2014 20:32:53 +0000 (17:32 -0300)
commit1aaf63b1ee912abd7675681f9d6ffaaf2ffc0451
tree65e3dc7602b1437498e02d237c0c53576db225da
parent641556c98c821922a9a2121247b5fa25e4407d11
perf evlist: Check that there is a thread_map when preparing a workload

The perf_evlist__prepare_workload expects a thread map to be in place
so that it can store the pid of the workload being started, so check it
and tell the developer about it instead of segfaulting.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-jvlz2f264e7kpmhjmwltikqw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/evlist.c