Author: jkim
Date: Wed Jan 13 19:19:50 2016
New Revision: 293836
URL: https://svnweb.freebsd.org/changeset/base/293836
Log:
Remove dead code when the target processor has POPCNT instruction.
Modified:
head/sys/amd64/amd64/pmap.c
Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Wed Jan 13 18:33:12 2016 (r293835)
+++ head/sys/amd64/amd64/pmap.c Wed Jan 13 19:19:50 2016 (r293836)
@@ -3018,11 +3018,14 @@ reserve_pv_entries(pmap_t pmap, int need
retry:
avail = 0;
TAILQ_FOREACH(pc, &pmap->pm_pvchunk, pc_list) {
+#ifndef __POPCNT__
if ((cpu_feature2 & CPUID2_POPCNT) == 0) {
free = bitcount64(pc->pc_map[0]);
free += bitcount64(pc->pc_map[1]);
free += bitcount64(pc->pc_map[2]);
- } else {
+ } else
+#endif
+ {
free = popcnt_pc_map_elem_pq(pc->pc_map[0]);
free += popcnt_pc_map_elem_pq(pc->pc_map[1]);
free += popcnt_pc_map_elem_pq(pc->pc_map[2]);
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