[Mesa-dev] [PATCH] util/u_queue: don't inherit thread affinity from parent thread

[Marek Olšák]

From: Marek Olšák <marek.ol...@amd.com>

---
 src/util/u_queue.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/util/u_queue.c b/src/util/u_queue.c
index 22d2cdd0fa2..9dd1a69ed7a 100644
--- a/src/util/u_queue.c
+++ b/src/util/u_queue.c
@@ -232,20 +232,32 @@ struct thread_input {
 };
 
 static int
 util_queue_thread_func(void *input)
 {
    struct util_queue *queue = ((struct thread_input*)input)->queue;
    int thread_index = ((struct thread_input*)input)->thread_index;
 
    free(input);
 
+#ifdef HAVE_PTHREAD_SETAFFINITY
+   /* Don't inherit the thread affinity from the parent thread.
+    * Set the full mask.
+    */
+   cpu_set_t cpuset;
+   CPU_ZERO(&cpuset);
+   for (unsigned i = 0; i < CPU_SETSIZE; i++)
+      CPU_SET(i, &cpuset);
+
+   pthread_setaffinity_np(pthread_self(), sizeof(cpuset), &cpuset);
+#endif
+
    if (strlen(queue->name) > 0) {
       char name[16];
       util_snprintf(name, sizeof(name), "%s%i", queue->name, thread_index);
       u_thread_setname(name);
    }
 
    while (1) {
       struct util_queue_job job;
 
       mtx_lock(&queue->lock);
-- 
2.17.1

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