kernel/linux.git/tools/objtool/trace.c, branch v6.19.11Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.19.112025-11-21T14:30:11+00:00objtool: Improve tracing of alternative instructions2025-11-21T14:30:11+00:00Alexandre Chartrealexandre.chartre@oracle.com2025-11-21T09:53:25+00:00urn:sha1:350c7ab8577a32c101a097f4c072220d9ce64f3b
When tracing function validation, improve the reporting of
alternative instruction by more clearly showing the different
alternatives beginning and end.
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://patch.msgid.link/20251121095340.464045-16-alexandre.chartre@oracle.com
objtool: Improve register reporting during function validation2025-11-21T14:30:10+00:00Alexandre Chartrealexandre.chartre@oracle.com2025-11-21T09:53:22+00:00urn:sha1:26a453fb5637907a538d6ea5ef23651142811e15
When tracing function validation, instruction state changes can
report changes involving registers. These registers are reported
with the name "r<num>" (e.g. "r3"). Print the CPU specific register
name instead of a generic name (e.g. print "rbx" instead of "r3"
on x86).
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://patch.msgid.link/20251121095340.464045-13-alexandre.chartre@oracle.com
objtool: Trace instruction state changes during function validation2025-11-21T14:30:10+00:00Alexandre Chartrealexandre.chartre@oracle.com2025-11-21T09:53:21+00:00urn:sha1:fcb268b47a2f4a497fdb40ef24bb9e06488b7213
During function validation, objtool maintains a per-instruction state,
in particular to track call frame information. When tracing validation,
print any instruction state changes.
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://patch.msgid.link/20251121095340.464045-12-alexandre.chartre@oracle.com
objtool: Add option to trace function validation2025-11-21T14:30:09+00:00Alexandre Chartrealexandre.chartre@oracle.com2025-11-21T09:53:20+00:00urn:sha1:70589843b36fee0c6e73632469da4e5fd11f0968
Add an option to trace and have information during the validation
of specified functions. Functions are specified with the --trace
option which can be a single function name (e.g. --trace foo to
trace the function with the name "foo"), or a shell wildcard
pattern (e.g. --trace foo* to trace all functions with a name
starting with "foo").
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://patch.msgid.link/20251121095340.464045-11-alexandre.chartre@oracle.com