bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-07-06 00:13:38 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

tools/perf: Add '__rel_loc' event field parsing support

Browse source 
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>
This commit is contained in:
Masami Hiramatsu 2021-11-22 18:30:48 +09:00 • committed by Steven Rostedt (VMware)
parent cd7729043b
commit 7c689c8397
7 changed files with 14 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
tools/perf/util/scripting-engines/trace-event-python.c
View file

@ -942,6 +942,8 @@ static void python_process_tracepoint(struct perf_sample *sample,
offset = val;
len = offset >> 16;
offset &= 0xffff;
if (field->flags & TEP_FIELD_IS_RELATIVE)
offset += field->offset + field->size;
}
if (field->flags & TEP_FIELD_IS_STRING &&
is_printable_array(data + offset, len)) {