X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=gettime-thread.c;h=2dc976fb42c7bbb5b4deedc0746d5577bd5c1e0b;hp=95f35c32e46cff25f6b43005462f608e1975fabf;hb=a9da8ab2169810667aeb26f857a8ac3c056e4d61;hpb=80fa052058c857f9faafee71f482a155f8a80ba1

diff --git a/gettime-thread.c b/gettime-thread.c
index 95f35c32..2dc976fb 100644
--- a/gettime-thread.c
+++ b/gettime-thread.c
@@ -8,11 +8,16 @@
 
 struct timeval *fio_tv = NULL;
 int fio_gtod_offload = 0;
-int fio_gtod_cpu = -1;
 static pthread_t gtod_thread;
+#ifdef FIO_HAVE_CPU_AFFINITY
+static os_cpu_mask_t fio_gtod_cpumask;
+#endif
 
 void fio_gtod_init(void)
 {
+	if (fio_tv)
+		return;
+
 	fio_tv = smalloc(sizeof(struct timeval));
 	if (!fio_tv)
 		log_err("fio: smalloc pool exhausted\n");
@@ -31,10 +36,16 @@ static void fio_gtod_update(void)
 	}
 }
 
+struct gtod_cpu_data {
+	struct fio_mutex *mutex;
+	unsigned int cpu;
+};
+
 static void *gtod_thread_main(void *data)
 {
 	struct fio_mutex *mutex = data;
 
+	fio_setaffinity(gettid(), fio_gtod_cpumask);
 	fio_mutex_up(mutex);
 
 	/*
@@ -84,4 +95,9 @@ err:
 	return ret;
 }
 
-
+void fio_gtod_set_cpu(unsigned int cpu)
+{
+#ifdef FIO_HAVE_CPU_AFFINITY
+	fio_cpu_set(&fio_gtod_cpumask, cpu);
+#endif
+}