kfn                37 arch/xtensa/include/asm/stacktrace.h 			     int (*kfn)(struct stackframe *frame, void *data),
kfn               116 arch/xtensa/kernel/stacktrace.c 			     int (*kfn)(struct stackframe *frame, void *data),
kfn               141 arch/xtensa/kernel/stacktrace.c 		if (kernel_text_address(pc) && kfn(&frame, data))