Re: [PATCH RFC v6 02/21] dept: Implement Dept(Dependency Tracker)

On Wed, May 04, 2022 at 05:17:30PM +0900, Byungchul Park wrote:

CURRENT STATUS +/*

[...]

• • Ensure it has been called on ON/OFF transition.
• */

+void dept_enirq_transition(unsigned long ip) +{

• struct dept_task *dt = dept_task();
• unsigned long flags;
• if (unlikely(READ_ONCE(dept_stop) || in_nmi()))

• return;
  

• /*

• * IRQ ON/OFF transition might happen while Dept is working.
  

• * We cannot handle recursive entrance. Just ingnore it.
  

• * Only transitions outside of Dept will be considered.
  

• */
  

• if (dt->recursive)

• return;
  

• flags = dept_enter();
• enirq_update(ip);
• dept_exit(flags);

+}

EXPORT_SYMBOL_GPL(dept_enirq_transition);

ERROR: modpost: "dept_enirq_transition" [arch/x86/kvm/kvm-amd.ko] undefined! ERROR: modpost: "dept_enirq_transition" [arch/x86/kvm/kvm-intel.ko] undefined!

This function needs to be exported for modules.

Thanks.