[PATCH v2 0/9] objtool: warning improvements

[Josh Poimboeuf]

v2:
- keep --backtrace
- hard-code awk logic (don't use objdump-func script)
- add OBJTOOL_VERBOSE=1
- add WARN_INSN()
- several other improvements/fixes - best to review from scratch ;-)

Josh Poimboeuf (9):
  scripts/objdump-func: Support multiple functions
  objtool: Add WARN_INSN()
  objtool: Limit unreachable warnings to once per function
  objtool: Add symbol iteration helpers
  objtool: Add verbose option for disassembling affected functions
  objtool: Include backtrace in verbose mode
  objtool: Remove superfluous dead_end_function() check
  objtool: Detect missing __noreturn annotations
  objtool: Ignore exc_double_fault() __noreturn warnings

 scripts/objdump-func                    |  34 +-
 tools/objtool/Documentation/objtool.txt |  11 +
 tools/objtool/builtin-check.c           |   5 +
 tools/objtool/check.c                   | 421 +++++++++++++-----------
 tools/objtool/elf.c                     |   2 +-
 tools/objtool/include/objtool/builtin.h |   1 +
 tools/objtool/include/objtool/elf.h     |  10 +
 tools/objtool/include/objtool/warn.h    |  22 +-
 tools/objtool/orc_gen.c                 |   9 +-
 9 files changed, 307 insertions(+), 208 deletions(-)

-- 
2.39.2