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authorDean Nelson <dnelson@redhat.com>2015-08-20 11:16:32 -0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-08-21 10:35:09 -0300
commit6f56e9cf581c6cedcaea3eb69444b169867ccf3d (patch)
treeb6a9e6f5047fa940da2d128d2c01ab32038b1550 /tools/perf/arch/x86/util/Build
parent81cd60cc29a9c3e92ad6ca167a4764b2c2d2fc04 (diff)
downloadlinux-6f56e9cf581c6cedcaea3eb69444b169867ccf3d.tar.gz
tools lib traceevent: Add checks for returned EVENT_ERROR type
Running the following perf-stat command on an arm64 system produces the following result... [root@aarch64 ~]# perf stat -e kmem:mm_page_alloc -a sleep 1 Warning: [kmem:mm_page_alloc] function sizeof not defined Warning: Error: expected type 4 but read 0 Segmentation fault [root@aarch64 ~]# The second warning was a result of the first warning not stopping processing after it detected the issue. That is, code that found the issue reported the first problem, but because it did not exit out of the functions smoothly, it caused the other warning to appear and not only that, it later caused the SIGSEGV. Signed-off-by: Dean Nelson <dnelson@redhat.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20150820151632.13927.13791.email-sent-by-dnelson@teal Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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