Hi all, I need to unset default value of LOCKDEP(=y) and TRACE_IRQFLAGS_SUPPORT(=y) to both "n". Having asked around and had tried for at least 3 days, seriously I still couldn't get both items configured as "n" Perhaps someone can help me on this item first. For instance, Symbol TRACE_IRQFLAGS description below, to set it, it will need the logics below: PROVE_LOCKING [=y] && DEBUG_KERNEL [=y] && TRACE_IRQFLAGS_SUPPORT [=y] && STACKTRACE_SUPPORT [=y] && LOCKDEP_SUPPORT [=y] || IRQSOFF_TRACER [=n] && TRACING_SUPPORT [=y] && FTRACE To unset it, I could either set DEBUG_KERNEL=n or set TRACING_SUPPORT=n (or FTRACE=n). However, having set it, yet I don't see symbol TRACE_IRQFLAGS is unset. Anything wrong of my interpretation of the logics above? Copied from "/" type TRACE_IRQFLAGS in menuconfig │ Symbol: TRACE_IRQFLAGS [=y] │ │ Type : boolean │ │ Defined at lib/Kconfig.debug:1047 │ │ Selected by: PROVE_LOCKING [=y] && DEBUG_KERNEL [=y] && TRACE_IRQFLAGS_SUPPORT [=y] && STACKTRACE_SUPPORT [=y] && LOCKDEP_SUPPORT [=y] || IRQSOFF_TRACER [=n] && TRACING_SUPPORT [=y] && FTRACE [=n │ │ │ │ │ │ Symbol: TRACE_IRQFLAGS_SUPPORT [=y] │ │ Type : boolean │ │ Defined at arch/arm/Kconfig:174 Appreciate any comments. Thanks in advance. Lim