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perf tools: Check if libtracevent has TEP_FIELD_IS_RELATIVE

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Some distros have older versions of libtraceevent where
TEP_FIELD_IS_RELATIVE and its associated semantics are not present, so
we need to check if the version has it, it was introduced in
libtraceevent 1.5.0.

Reported-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2022-12-08 19:28:58 -03:00
parent 4171925aa9
commit b9a49f8cb0
8 changed files with 18 additions and 1 deletions
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2
tools/perf/util/scripting-engines/trace-event-python.c
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@ -994,8 +994,10 @@ static void python_process_tracepoint(struct perf_sample *sample,
offset = val;
len = offset >> 16;
offset &= 0xffff;
#ifdef HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
if (field->flags & TEP_FIELD_IS_RELATIVE)
offset += field->offset + field->size;
#endif
}
if (field->flags & TEP_FIELD_IS_STRING &&
is_printable_array(data + offset, len)) {