On Tue, Nov 28, 2017 at 10:20:25AM +0100, Peter Zijlstra wrote: > 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().
Or we could field it a spot in the cpu_entry_area I suppose.
