X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=gettime-thread.c;h=86c2e2efdcdcd796bd280951b5f0170ebe5a8db8;hb=2d21a787e642c4ba3b043c7e07f29c98e0383beb;hp=eb535a07cf041250064decdeb1cc9d74f1252703;hpb=ec2ea18e87fad6c42d6875cd4ee1bb25ef9b4627;p=fio.git

diff --git a/gettime-thread.c b/gettime-thread.c
index eb535a07..86c2e2ef 100644
--- a/gettime-thread.c
+++ b/gettime-thread.c
@@ -2,9 +2,10 @@
 #include <time.h>
 
 #include "fio.h"
+#include "lib/seqlock.h"
 #include "smalloc.h"
 
-struct timespec *fio_ts = NULL;
+struct fio_ts *fio_ts;
 int fio_gtod_offload = 0;
 static pthread_t gtod_thread;
 static os_cpu_mask_t fio_gtod_cpumask;
@@ -15,21 +16,21 @@ void fio_gtod_init(void)
 		return;
 
 	fio_ts = smalloc(sizeof(*fio_ts));
-	if (!fio_ts)
-		log_err("fio: smalloc pool exhausted\n");
 }
 
 static void fio_gtod_update(void)
 {
-	if (fio_ts) {
-		struct timeval __tv;
-
-		gettimeofday(&__tv, NULL);
-		fio_ts->tv_sec = __tv.tv_sec;
-		write_barrier();
-		fio_ts->tv_nsec = __tv.tv_usec * 1000;
-		write_barrier();
-	}
+	struct timeval __tv;
+
+	if (!fio_ts)
+		return;
+
+	gettimeofday(&__tv, NULL);
+
+	write_seqlock_begin(&fio_ts->seqlock);
+	fio_ts->ts.tv_sec = __tv.tv_sec;
+	fio_ts->ts.tv_nsec = __tv.tv_usec * 1000;
+	write_seqlock_end(&fio_ts->seqlock);
 }
 
 struct gtod_cpu_data {
@@ -57,7 +58,7 @@ static void *gtod_thread_main(void *data)
 	 * but I'm not sure what to use outside of a simple CPU nop to relax
 	 * it - we don't want to lose precision.
 	 */
-	while (threads) {
+	while (nr_segments) {
 		fio_gtod_update();
 		nop;
 	}