linux-kernel - [RFC PATCH 0/4] objtool: Enable and implement --mcount option on powerpc

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Message-Id: <20220523175548.922671-1-sv@linux.ibm.com>
Date:   Mon, 23 May 2022 23:25:44 +0530
From:   Sathvika Vasireddy <sv@...ux.ibm.com>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org, jpoimboe@...hat.com,
        peterz@...radead.org, mbenes@...e.cz, aik@...abs.ru,
        mpe@...erman.id.au, christophe.leroy@...roup.eu,
        rostedt@...dmis.org, naveen.n.rao@...ux.vnet.ibm.com,
        sv@...ux.ibm.com
Subject: [RFC PATCH 0/4] objtool: Enable and implement --mcount option on powerpc

These patches are rebased on top of objtool/core
branch of the tip tree, and work only on ppc64le
for now. 

Note: With this patch set, there are still some 
warnings seen with ppc64le kernel build.

Sathvika Vasireddy (4):
  objtool: Add --mnop as an option to --mcount
  objtool: Enable objtool to run only on files with ftrace enabled
  objtool/powerpc: Enable objtool to be built on ppc
  objtool/powerpc: Add --mcount specific implementation

 Makefile                                      |  4 +-
 arch/powerpc/Kconfig                          |  2 +
 arch/x86/Kconfig                              |  1 +
 scripts/Makefile.build                        |  5 +-
 tools/objtool/arch/powerpc/Build              |  2 +
 tools/objtool/arch/powerpc/decode.c           | 87 +++++++++++++++++++
 .../arch/powerpc/include/arch/cfi_regs.h      | 11 +++
 tools/objtool/arch/powerpc/include/arch/elf.h |  8 ++
 .../arch/powerpc/include/arch/endianness.h    |  9 ++
 .../arch/powerpc/include/arch/special.h       | 21 +++++
 tools/objtool/arch/powerpc/special.c          | 19 ++++
 tools/objtool/builtin-check.c                 | 14 +++
 tools/objtool/check.c                         | 31 ++++---
 tools/objtool/elf.c                           | 13 +++
 tools/objtool/include/objtool/builtin.h       |  1 +
 tools/objtool/include/objtool/elf.h           |  1 +
 16 files changed, 212 insertions(+), 17 deletions(-)
 create mode 100644 tools/objtool/arch/powerpc/Build
 create mode 100644 tools/objtool/arch/powerpc/decode.c
 create mode 100644 tools/objtool/arch/powerpc/include/arch/cfi_regs.h
 create mode 100644 tools/objtool/arch/powerpc/include/arch/elf.h
 create mode 100644 tools/objtool/arch/powerpc/include/arch/endianness.h
 create mode 100644 tools/objtool/arch/powerpc/include/arch/special.h
 create mode 100644 tools/objtool/arch/powerpc/special.c

-- 
2.25.1