Commit 0f71dcfb4aef (powerpc/ftrace: Add support for -fpatchable-function-entry) added a script to check for -fpatchable-function-entry compiler support. The script expects compiler to emit the section __patchable_function_entries and few nops after a function entry. If the compiler understands and emits the above, CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY is set. So teach dummy-tools' gcc about this. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@xxxxxxxxxx> Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx> Cc: Nathan Chancellor <nathan@xxxxxxxxxx> Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Cc: Nicolas Schier <nicolas@xxxxxxxxx> Cc: linux-kbuild@xxxxxxxxxxxxxxx Cc: Naveen N Rao <naveen@xxxxxxxxxx> Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> --- scripts/dummy-tools/gcc | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc index 07f6dc4c5cf6..e6c41427c02f 100755 --- a/scripts/dummy-tools/gcc +++ b/scripts/dummy-tools/gcc @@ -91,6 +91,16 @@ if arg_contain -S "$@"; then fi exit 0 fi + + # For arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh + if arg_contain -m64 "$@" && arg_contain -fpatchable-function-entry=2 "$@"; then + echo "func:" + echo ".section __patchable_function_entries" + echo ".localentry" + echo " nop" + echo " nop" + exit 0 + fi fi # To set GCC_PLUGINS -- 2.42.0
