Em Mon, Feb 18, 2019 at 11:38:41AM -0800, Andrii Nakryiko escreveu:
> On Mon, Feb 18, 2019 at 6:29 AM Arnaldo Carvalho de Melo <arnaldo.melo@xxxxxxxxx> wrote:
> > Em Sun, Feb 17, 2019 at 12:20:18AM -0800, Andrii Nakryiko escreveu:
> > The 'struct sun_disklabel' is interesting, pahole doesn't print it for
> > the DWARF case when pretty printing all structs, but it works for the
> > BTF case, I'll investigate.
> I wonder if that has something to do with the fact that btf_dedup also
> does FWD -> STRUCT/UNION resolution?
Nope, when printing the classes (structs and class) pahole has this
show_private_classes option, so that structs and classes that are
defined inside other classes or functions are only shown when you ask
for that, and that is what sun_disklabel is, it is defined in
block/partitions/sun.c as:
int sun_partition(struct parsed_partitions *state)
{
int i;
__be16 csum;
int slot = 1;
__be16 *ush;
Sector sect;
struct sun_disklabel {
unsigned char info[128]; /* Informative text string */
struct sun_vtoc {
__be32 version; /* Layout version */
char volume[8]; /* Volume name */
__be16 nparts; /* Number of partitions */
struct sun_info { /* Partition hdrs, sec 2 */
__be16 id;
__be16 flags;
} infos[8];
<SNIP>
This information gets lost when we convert it to BTF, so for btfdiff
I'll add that option:
--show_private_classes Show classes that are defined inside other classes
or in functions
When printing from DWARF info.
- Arnaldo
