tile: support CONFIG_PREEMPT

This change adds support for CONFIG_PREEMPT (full kernel preemption).
In addition to the core support, this change includes a number
of places where we fix up uses of smp_processor_id() and per-cpu
variables.  I also eliminate the PAGE_HOME_HERE and PAGE_HOME_UNKNOWN
values for page homing, as it turns out they weren't being used.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/tile/kernel/stack.c b/arch/tile/kernel/stack.c
index c972689231ef..176ffe48eee9 100644
--- a/arch/tile/kernel/stack.c
+++ b/arch/tile/kernel/stack.c
@@ -194,7 +194,7 @@ static int KBacktraceIterator_next_item_inclusive(
  */
 static void validate_stack(struct pt_regs *regs)
 {
-        int cpu = smp_processor_id();
+        int cpu = raw_smp_processor_id();
         unsigned long ksp0 = get_current_ksp0();
         unsigned long ksp0_base = ksp0 - THREAD_SIZE;
         unsigned long sp = stack_pointer;
@@ -392,7 +392,7 @@ void tile_show_stack(struct KBacktraceIterator *kbt, int headers)
                 pr_err("Starting stack dump of tid %d, pid %d (%s)"
                        " on cpu %d at cycle %lld\n",
                        kbt->task->pid, kbt->task->tgid, kbt->task->comm,
-                       smp_processor_id(), get_cycles());
+                       raw_smp_processor_id(), get_cycles());
         }
         kbt->verbose = 1;
         i = 0;