Messages in this thread Patch in this message | | | Subject | [PATCH] riscv/ftrace: Export _mcount when FUNCTION_GRAPH_TRACER isn't set | Date | Mon, 4 Jun 2018 13:30:28 -0700 | From | Palmer Dabbelt <> |
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From: Alan Kao <alankao@andestech.com>
The EXPORT_SYMBOL(_mcount) for RISC-V ended up inside a CONFIG_FUNCTION_GRAPH_TRACER ifdef. If you enable modules without enabling CONFIG_FUNCTION_GRAPH_TRACER then you'll get a build error without this patch because the modules won't be able to find _mcount.
The new behavior is to export _mcount whenever CONFIG_FUNCTION_TRACER is defined. This matches what every other architecture is doing.
Signed-off-by: Alan Kao <alankao@andestech.com> Cc: Greentime Hu <greentime@andestech.com> Cc: Zong Li <zong@andestech.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com> --- arch/riscv/kernel/mcount.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/kernel/mcount.S b/arch/riscv/kernel/mcount.S index ce9bdc57a2a1..5721624886a1 100644 --- a/arch/riscv/kernel/mcount.S +++ b/arch/riscv/kernel/mcount.S @@ -126,5 +126,5 @@ do_trace: RESTORE_ABI_STATE ret ENDPROC(_mcount) -EXPORT_SYMBOL(_mcount) #endif +EXPORT_SYMBOL(_mcount) -- 2.16.4
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