diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/utils/SkThreadUtils_pthread_linux.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/utils/SkThreadUtils_pthread_linux.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE //for pthread_setaffinity_np
+#endif
+
+#include "SkThreadUtils.h"
+#include "SkThreadUtils_pthread.h"
+
+#include <pthread.h>
+
+static int nth_set_cpu(unsigned int n, cpu_set_t* cpuSet) {
+    n %= CPU_COUNT(cpuSet);
+    for (unsigned int setCpusSeen = 0, currentCpu = 0; true; ++currentCpu) {
+        if (CPU_ISSET(currentCpu, cpuSet)) {
+            ++setCpusSeen;
+            if (setCpusSeen > n) {
+                return currentCpu;
+            }
+        }
+    }
+}
+
+bool SkThread::setProcessorAffinity(unsigned int processor) {
+    SkThread_PThreadData* pthreadData = static_cast<SkThread_PThreadData*>(fData);
+    if (!pthreadData->fValidPThread) {
+        return false;
+    }
+
+    cpu_set_t parentCpuset;
+    if (0 != pthread_getaffinity_np(pthread_self(), sizeof(cpu_set_t), &parentCpuset)) {
+        return false;
+    }
+
+    cpu_set_t cpuset;
+    CPU_ZERO(&cpuset);
+    CPU_SET(nth_set_cpu(processor, &parentCpuset), &cpuset);
+    return 0 == pthread_setaffinity_np(pthreadData->fPThread,
+                                       sizeof(cpu_set_t),
+                                       &cpuset);
+}