tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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powerpc64: make clang cross-build friendly

ARCH_USING_PATCHABLE_FUNCTION_ENTRY depends on toolchain support for
-fpatchable-function-entry option. The current script that checks
for this support only handles GCC. Rename the script and extend it
to detect support for -fpatchable-function-entry with Clang as well,
allowing clean cross-compilation with Clang toolchains.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260127084926.34497-2-hbathini@linux.ibm.com

authored by

Hari Bathini and committed by
Madhavan Srinivasan 73cdf24e 04e707cb

+2 -2
+2 -2
arch/powerpc/Kconfig
··· 573 573 depends on FUNCTION_TRACER && (PPC32 || PPC64_ELF_ABI_V2) 574 574 depends on $(cc-option,-fpatchable-function-entry=2) 575 575 def_bool y if PPC32 576 - def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN 577 - def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN 576 + def_bool $(success,$(srctree)/arch/powerpc/tools/check-fpatchable-function-entry.sh $(CC) $(CLANG_FLAGS) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN 577 + def_bool $(success,$(srctree)/arch/powerpc/tools/check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN 578 578 579 579 config PPC_FTRACE_OUT_OF_LINE 580 580 def_bool PPC64 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY
arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh arch/powerpc/tools/check-fpatchable-function-entry.sh