@@ -593,9 +593,14 @@ defined(CONFIG_AUTOFDO_CLANG)
__unlikely_text_start = .; \
*(.text.unlikely .text.unlikely.*) \
__unlikely_text_end = .;
+#define TEXT_SPLIT \
+ __split_text_start = .; \
+ *(.text.split .text.split.[0-9a-zA-Z_]*) \
+ __split_text_end = .;
#else
#define TEXT_HOT *(.text.hot .text.hot.*)
#define TEXT_UNLIKELY *(.text.unlikely .text.unlikely.*)
+#define TEXT_SPLIT
#endif
/*
@@ -611,6 +616,7 @@ defined(CONFIG_AUTOFDO_CLANG)
#define TEXT_TEXT \
*(.text.asan.* .text.tsan.*) \
*(.text.unknown .text.unknown.*) \
+ TEXT_SPLIT \
TEXT_UNLIKELY \
ALIGN_FUNCTION(); \
TEXT_HOT \
@@ -6,6 +6,7 @@ CFLAGS_AUTOFDO_CLANG := -fdebug-info-for-profiling -mllvm -enable-fs-discriminat
ifdef CLANG_AUTOFDO_PROFILE
CFLAGS_AUTOFDO_CLANG += -fprofile-sample-use=$(CLANG_AUTOFDO_PROFILE) -ffunction-sections
+CFLAGS_AUTOFDO_CLANG += -fsplit-machine-functions
endif
ifdef CONFIG_LTO_CLANG
@@ -14,6 +15,7 @@ ifdef CLANG_AUTOFDO_PROFILE
KBUILD_LDFLAGS += --lto-sample-profile=$(CLANG_AUTOFDO_PROFILE)
endif
KBUILD_LDFLAGS += --mllvm=-enable-fs-discriminator=true --mllvm=-improved-fs-discriminator=true -plugin-opt=thinlto
+KBUILD_LDFLAGS += -plugin-opt=-split-machine-functions
endif
endif