pahole: Implement --packed
To show just packed structs.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/man-pages/pahole.1 b/man-pages/pahole.1
index 2e51569..cacdc58 100644
--- a/man-pages/pahole.1
+++ b/man-pages/pahole.1
@@ -295,6 +295,11 @@
combine --structs with --sizes, etc.
.TP
+.B \-\-packed
+Show only packed structs, all the other filters apply, i.e. to show just the
+sizes of all packed structs combine --packed with --sizes, etc.
+
+.TP
.B \-\-unions
Show only unions, all the other filters apply, i.e. to show just the sizes of all unions
combine --union with --sizes, etc.
diff --git a/pahole.c b/pahole.c
index dac7a49..a041f4d 100644
--- a/pahole.c
+++ b/pahole.c
@@ -59,6 +59,7 @@
static bool defined_in;
static bool just_unions;
static bool just_structs;
+static bool just_packed_structs;
static int show_reorg_steps;
static const char *class_name;
static LIST_HEAD(class_names);
@@ -371,6 +372,12 @@
if (just_structs && !tag__is_struct(tag))
return NULL;
+ if (just_packed_structs) {
+ /* Is it not packed? */
+ if (!class__infer_packed_attributes(class, cu))
+ return NULL;
+ }
+
if (!tag->top_level) {
class__find_holes(class);
@@ -812,6 +819,7 @@
#define ARGP_range 316
#define ARGP_skip_encoding_btf_vars 317
#define ARGP_btf_encode_force 318
+#define ARGP_just_packed_structs 319
static const struct argp_option pahole__options[] = {
{
@@ -1111,6 +1119,11 @@
.doc = "Show just unions",
},
{
+ .name = "packed",
+ .key = ARGP_just_packed_structs,
+ .doc = "Show just packed structs",
+ },
+ {
.name = NULL,
}
};
@@ -1202,6 +1215,9 @@
just_unions = true; break;
case ARGP_just_structs:
just_structs = true; break;
+ case ARGP_just_packed_structs:
+ just_structs = true;
+ just_packed_structs = true; break;
case ARGP_count:
conf.count = atoi(arg); break;
case ARGP_skip:
