[kernel][smp] reduce impact of SMP code on UP builds

Hopefully to nothing...
- remove current/pinned cpu tracking in thread struct
- macroize access to current/pinned cpu tracking
- empty-inline/remove vestigial mp_* bits in UP builds

1 files changed, 1 insertions, 1 deletions

diff --git a/top/main.c b/top/main.c
index 0065a945..9e91e841 100644
--- a/top/main.c
+++ b/top/main.c
@@ -121,7 +121,7 @@ void lk_main(ulong arg0, ulong arg1, ulong arg2, ulong arg3)
     // create a thread to complete system initialization
     dprintf(SPEW, "creating bootstrap completion thread\n");
     thread_t *t = thread_create("bootstrap2", &bootstrap2, NULL, DEFAULT_PRIORITY, DEFAULT_STACK_SIZE);
-    t->pinned_cpu = 0;
+    thread_set_pinned_cpu(t, 0);
     thread_detach(t);
     thread_resume(t);