linux-kernel - [PATCH v2 0/2] objtool: add support for >64k sections

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Date:   Tue, 21 Apr 2020 15:08:41 -0700
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Kristen Carlson Accardi <kristen@...ux.intel.com>,
        linux-kernel@...r.kernel.org,
        Sami Tolvanen <samitolvanen@...gle.com>
Subject: [PATCH v2 0/2] objtool: add support for >64k sections

This series fixes objtool for binaries with >64k sections, and
includes optimizations to reduce the runtime for a binary with
~130k sections from >15 minutes to ~4 seconds.

Changes in v2:
 - Dropped the insn_hash optimization as Peter has a nearly
   similar change queued already.
 - Instead of storing the last instruction for each section,
   use find_insn to locate it.


Sami Tolvanen (2):
  objtool: use gelf_getsymshndx to handle >64k sections
  objtool: optimize add_dead_ends for split sections

 tools/objtool/check.c | 36 +++++++++++++++++-------------------
 tools/objtool/elf.c   | 24 +++++++++++++++++-------
 2 files changed, 34 insertions(+), 26 deletions(-)


base-commit: 18bf34080c4c3beb6699181986cc97dd712498fe
-- 
2.26.1.301.g55bc3eb7cb9-goog