perf tools: Check if libtracevent has TEP_FIELD_IS_RELATIVE

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 <[e-mail]>
Tested-by: Athira Jajeev <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Ian Rogers <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Nick Desaulniers <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>,
Cc: Stephane Eranian <[e-mail]>
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/Makefile.config

···
     LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
     CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
     $(call detected,CONFIG_LIBTRACEEVENT)
+    LIBTRACEEVENT_VERSION_WITH_TEP_FIELD_IS_RELATIVE := $(shell expr 1 \* 255 \* 255 + 5 \* 255 + 0) # 1.5.0
+    ifeq ($(shell test $(LIBTRACEEVENT_VERSION_CPP) -gt $(LIBTRACEEVENT_VERSION_WITH_TEP_FIELD_IS_RELATIVE); echo $$?),0)
+      CFLAGS += -DHAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
+    endif
   else
     dummy := $(warning Warning: libtraceevent is missing limiting functionality, please install libtraceevent-dev/libtraceevent-devel)
   endif

tools/perf/builtin-trace.c

···
 				offset = format_field__intval(field, sample, evsel->needs_swap);
 				syscall_arg.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
 			}
 
 			val = (uintptr_t)(sample->raw_data + offset);

tools/perf/util/data-convert-bt.c

···
 		offset = tmp_val;
 		len = offset >> 16;
 		offset &= 0xffff;
+#ifdef HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
 		if (flags & TEP_FIELD_IS_RELATIVE)
 			offset += fmtf->offset + fmtf->size;
+#endif
 	}
 
 	if (flags & TEP_FIELD_IS_ARRAY) {

tools/perf/util/evsel.c

···
 	if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 		offset = *(int *)(sample->raw_data + field->offset);
 		offset &= 0xffff;
+#ifdef HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
 		if (field->flags & TEP_FIELD_IS_RELATIVE)
 			offset += field->offset + field->size;
+#endif
 	}
 
 	return sample->raw_data + offset;

tools/perf/util/python.c

···
 			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)) {

tools/perf/util/scripting-engines/trace-event-perl.c

···
 			if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 				offset = *(int *)(data + field->offset);
 				offset &= 0xffff;
+#ifdef HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
 				if (field->flags & TEP_FIELD_IS_RELATIVE)
 					offset += field->offset + field->size;
+#endif
 			} else
 				offset = field->offset;
 			XPUSHs(sv_2mortal(newSVpv((char *)data + offset, 0)));

tools/perf/util/scripting-engines/trace-event-python.c

···
 				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)) {

tools/perf/util/sort.c

···
 		tep_read_number_field(field, a->raw_data, &dyn);
 		offset = dyn & 0xffff;
 		size = (dyn >> 16) & 0xffff;
+#ifdef HAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
 		if (field->flags & TEP_FIELD_IS_RELATIVE)
 			offset += field->offset + field->size;
-
+#endif
 		/* record max width for output */
 		if (size > hde->dynamic_len)
 			hde->dynamic_len = size;