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authorNamhyung Kim <namhyung@kernel.org>2024-05-07 07:13:38 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2024-05-08 03:39:42 +0300
commit187c219b57eaf3e1b7a3cab2c6a8b7909bdbf4a9 (patch)
tree6d2c9ae83040a285214e25f0b07899284d6fc9bd /tools/perf
parentd561e170bd07db62c9b8dbe3d0f59085447ca77a (diff)
downloadlinux-187c219b57eaf3e1b7a3cab2c6a8b7909bdbf4a9.tar.xz
perf dwarf-aux: Print array type name with "[]"
It's confusing both pointers and arrays are printed as *. Let's print array types with [] so that we can identify them easily. Although it's interchangable, sometimes it can cause confusion with size like in the below example. Note that it is not the same with C syntax where it goes to the variable names, but we want to have it in the type names (like in Go language). Before: mov [20] 0x68(reg5) -> reg0 type='struct page**' size=0x80 (die:0x4e61d32) After: mov [20] 0x68(reg5) -> reg0 type='struct page*[]' size=0x80 (die:0x4e61d32) Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20240507041338.2081775-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/dwarf-aux.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/dwarf-aux.c b/tools/perf/util/dwarf-aux.c
index c0a492e65388..ec988f294497 100644
--- a/tools/perf/util/dwarf-aux.c
+++ b/tools/perf/util/dwarf-aux.c
@@ -1110,8 +1110,10 @@ int die_get_typename_from_type(Dwarf_Die *type_die, struct strbuf *buf)
const char *tmp = "";
tag = dwarf_tag(type_die);
- if (tag == DW_TAG_array_type || tag == DW_TAG_pointer_type)
+ if (tag == DW_TAG_pointer_type)
tmp = "*";
+ else if (tag == DW_TAG_array_type)
+ tmp = "[]";
else if (tag == DW_TAG_subroutine_type) {
/* Function pointer */
return strbuf_add(buf, "(function_type)", 15);