On Tue, 6 Apr 2021 18:23:51 +0800 Zhang Jianhua <[email protected]> wrote:
> If CONFIG_FUNCTION_GRAPH_TRACER=y, the following errors will be seen > while compiling patch.c > > arch/arm/kernel/patch.c: In function ‘__patch_text_real’: > arch/arm/kernel/patch.c:94:11: error: implicit declaration of function > ‘__opcode_to_mem_thumb32’; did you mean ‘__opcode_to_mem_thumb16’? > [-Werror=implicit-function-declaration] > insn = __opcode_to_mem_thumb32(insn); > ^~~~~~~~~~~~~~~~~~~~~~~ > __opcode_to_mem_thumb16 > > Signed-off-by: Zhang Jianhua <[email protected]> > --- > kernel/trace/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig > index 7fa82778c3e6..fbf5fd80f105 100644 > --- a/kernel/trace/Kconfig > +++ b/kernel/trace/Kconfig > @@ -177,6 +177,7 @@ config FUNCTION_GRAPH_TRACER > depends on HAVE_FUNCTION_GRAPH_TRACER > depends on FUNCTION_TRACER > depends on !X86_32 || !CC_OPTIMIZE_FOR_SIZE > + depends on CPU_ENDIAN_BE8 || !CPU_ENDIAN_BE32 Doesn't this break 32 bit big endian powerpc? Not to mention, my config doesn't have either of those. NACK -- Steve > default y > help > Enable the kernel to trace a function at both its return
