[PATCH 0/3] powerpc64/ftrace: fixes clang build issues

[Hari Bathini]

Support for -fpatchable-function-entry on ppc64le was added in Clang
with [1]. Faced a couple of issues while building the linux kernel
with Clang though. Patches 1 & 2 address those issues. The last patch
provides workaround to ensure, an open issue [2] in Clang with
-fpatchable-function-entry support, does not impact the linux
ftrace subsystem.

[1] https://github.com/llvm/llvm-project/pull/151569
[2] https://github.com/llvm/llvm-project/issues/163706

Hari Bathini (3):
  powerpc64: make clang cross-build friendly
  powerpc64/ftrace: fix OOL stub count with clang
  powerpc64/ftrace: workaround clang recording GEP in
    __patchable_function_entries

 arch/powerpc/Kconfig                          |  5 ++--
 arch/powerpc/kernel/trace/ftrace.c            | 26 ++++++++++++++++---
 ....sh => check-fpatchable-function-entry.sh} |  0
 arch/powerpc/tools/ftrace-gen-ool-stubs.sh    |  4 +--
 4 files changed, 27 insertions(+), 8 deletions(-)
 rename arch/powerpc/tools/{gcc-check-fpatchable-function-entry.sh => check-fpatchable-function-entry.sh} (100%)

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2.51.1