Merge remote-tracking branch 'aosp/upstream'

* aosp/upstream:
  Improve regen performance by setting cpu affinity

Test: m nothing (with new ckati prebuilt)
Change-Id: I90eee540ad65b330d2d3f833e1bc7dc775102fff
diff --git a/regen.cc b/regen.cc
index b6c2872..4374f81 100644
--- a/regen.cc
+++ b/regen.cc
@@ -23,6 +23,7 @@
 #include <mutex>
 #include <vector>
 
+#include "affinity.h"
 #include "fileutil.h"
 #include "find.h"
 #include "func.h"
@@ -429,6 +430,7 @@
     tp->Submit([this]() {
       string err;
       // TODO: Make glob cache thread safe and create a task for each glob.
+      SetAffinityForSingleThread();
       for (GlobResult* gr : globs_) {
         if (CheckGlobResult(gr, &err)) {
           unique_lock<mutex> lock(mu_);
@@ -442,6 +444,7 @@
     });
 
     tp->Submit([this]() {
+      SetAffinityForSingleThread();
       for (ShellResult* sr : commands_) {
         string err;
         if (CheckShellResult(sr, &err)) {