From 1bfaa37fd3486e66131de9cb87747c84b4c89a05 Mon Sep 17 00:00:00 2001 From: "Jiri Slaby (SUSE)" Date: Mon, 30 Oct 2023 12:34:16 +0100 Subject: [PATCH] kbuild: dummy-tools: pretend we understand -fpatchable-function-entry 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) Reviewed-by: Nathan Chancellor Signed-off-by: Masahiro Yamada --- 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