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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-09-06 15:19:01 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-09-09 15:50:44 -0300 |
commit | ccf53eac2097fb47bc40875ffb22c2d10fa8c46c (patch) | |
tree | 66a3953917d06265a9bac53e71a95d9f4757f62a /tools/perf/tests/perf-record.c | |
parent | 72f4a11d2fb16792f5e5107922652366194cfd66 (diff) |
perf trace: Handle perf.data files with no tracepoints
Before:
perf trace -i perf.data
Segmentation fault (core dumped)
#
After:
# perf trace -i perf.data
Data file does not have raw_syscalls:sys_enter events
#
When there are no tracepoints in a perf.data file the struct pevent
that contains the list of tracepoints that will be used to lookup the
tracepoint id by name will not be populated, causing a NULL deref.
And we don't need to do all that dance to look at pevents for an entry
with a slighly different name to then lookup the tracepoint by its id on
the evlist, just use the perf_evlist__find_tracepoint_by_name() routine,
that will find the tracepoint, if present.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
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-egcm21k1e6gcyxpcgjxtmsq3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests/perf-record.c')
0 files changed, 0 insertions, 0 deletions