arm: Use vsprintf extention %pf with builtin_return_address
Emit the function name not the address when possible. builtin_return_address() gives an address. When building a kernel with CONFIG_KALLSYMS, emit the actual function name not the address. Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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