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authorMasami Hiramatsu <mhiramat@kernel.org>2021-11-22 18:30:48 +0900
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2021-12-06 15:37:22 -0500
commit7c689c839734a23eda855e69a56ed4795533bf71 (patch)
treef669b7efa19178bc6e753cbf74efb8855f2def35 /tools/perf/builtin-trace.c
parentcd7729043b31b32b34daaa6775e255b76de7f976 (diff)
tools/perf: Add '__rel_loc' event field parsing support
Add new '__rel_loc' dynamic data location attribute support. This type attribute is similar to the '__data_loc' but records the offset from the field itself. The libtraceevent adds TEP_FIELD_IS_RELATIVE to the 'tep_format_field::flags' with TEP_FIELD_IS_DYNAMIC for'__rel_loc'. Link: https://lkml.kernel.org/r/163757344810.510314.12449413842136229871.stgit@devnote2 Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf/builtin-trace.c')
-rw-r--r--tools/perf/builtin-trace.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 0b52e08e558e..ea517762cb0c 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2726,6 +2726,8 @@ static size_t trace__fprintf_tp_fields(struct trace *trace, struct evsel *evsel,
offset = format_field__intval(field, sample, evsel->needs_swap);
syscall_arg.len = offset >> 16;
offset &= 0xffff;
+ if (field->flags & TEP_FIELD_IS_RELATIVE)
+ offset += field->offset + field->size;
}
val = (uintptr_t)(sample->raw_data + offset);