I'm using it using a directory with all debuginfo packages in fedora, so
that I can run a before and after with different tools (pahole, pfunct),
and check the differences after some change.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
That is used by cus__find_function_by_addr & cu__func_function_by_addr.
First user is pfunct --addr, but this is really for pfunct --annotate, that
will process a perf.data file generated by 'perf report', load the debugging
info and regenerate the functions (pfunct -TVi like) that had hits, using
libdisasm to show the assembly code, etc.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
In libdwarves.so well continue using DW_TAG_ entries and types for now, but its
becoming non-DWARF specific as will be demonstrated with the introduction of
ctf_loader.c in the upcoming csets.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1. We now use relayfs
2. ostra-cg is shipped and used in the Makefile
3. README.ctracer has all the details
I followed README.ctracer and the result, in my workstation, was this one:
http://oops.ghostprotocols.net:81/acme/dwarves/callgraphs/acme_eating_his_dog_food/6.html
I've started on the 6th page as it is more interesting, having tcp and netlink
callchains, don't be disappointed by some pages having just one level of
nesting, that is just the lack of containers and aliases (to follow tcp_sock,
skb->sk, etc) from the OSTRA days, but it's getting there! :-)
Ah, it is collecting all the base types in the specified struct by doing a
struct "view", i.e. trimming the struct to have just members that are
"reducible" to basic types (int, long, char, signed and unsigned), then
reorganizing it with the code introduced in pahole --reorganize to get it to
the best layout possible, reducing the size of the entry probe points trace
entries.
Updated rpms are available at the usual place:
http://oops.ghostprotocols.net:81/acme/dwarves/rpm/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
