ufn 38 arch/xtensa/include/asm/stacktrace.h int (*ufn)(struct stackframe *frame, void *data), ufn 41 arch/xtensa/include/asm/stacktrace.h int (*ufn)(struct stackframe *frame, void *data), ufn 27 arch/xtensa/kernel/stacktrace.c int (*ufn)(struct stackframe *frame, void *data), ufn 44 arch/xtensa/kernel/stacktrace.c if (pc == 0 || pc >= TASK_SIZE || ufn(&frame, data)) ufn 82 arch/xtensa/kernel/stacktrace.c if (pc == 0 || pc >= TASK_SIZE || ufn(&frame, data)) ufn 109 arch/xtensa/kernel/stacktrace.c if (pc == 0 || pc >= TASK_SIZE || ufn(&frame, data)) ufn 117 arch/xtensa/kernel/stacktrace.c int (*ufn)(struct stackframe *frame, void *data), ufn 147 arch/xtensa/kernel/stacktrace.c if (ufn == NULL) ufn 149 arch/xtensa/kernel/stacktrace.c xtensa_backtrace_user(regs, depth, ufn, data);