On Mon, Nov 27, 2017 at 10:10:12PM -0600, Josh Poimboeuf wrote: > The '.data..percpu..user_mapped..page_aligned' section isn't used > anywhere. Remove it and its related macros.
With my patches: arch/x86/events/intel/ds.c:DEFINE_PER_CPU_SHARED_ALIGNED_USER_MAPPED(struct debug_store, cpu_debug_store); is the only user left of any of that. I suppose we could just allocate a whole page for that and use kaiser_add_mapping() for it. Then we can remove all of DEFINE_.*_USER_MAPPED().
