Display last initialised time in gpu management info.

main.c

@@ -1965,6 +1965,7 @@ retry:
 			gpu, cgpu->rolling, cgpu->total_mhashes / total_secs,
 			cgpu->getworks, cgpu->accepted, cgpu->rejected, cgpu->hw_errors,
 			cgpu->efficiency, cgpu->utility);
+		wlog("Last initialised: %s\n", cgpu->init);
 		for (i = 0; i < mining_threads; i++) {
 			thr = &thr_info[i];
 			if (thr->cgpu != cgpu)
@@ -3361,8 +3362,9 @@ static void *reinit_gpu(void *userdata)
 	struct cgpu_info *cgpu = (struct cgpu_info *)userdata;
 	int gpu = cgpu->cpu_gpu;
 	struct thr_info *thr;
-	int thr_id;
+	struct timeval now;
 	_clState *clState;
+	int thr_id;
 
 	/* Send threads message to stop */
 	gpu_devices[gpu] = false;
@@ -3400,6 +3402,9 @@ static void *reinit_gpu(void *userdata)
 		applog(LOG_WARNING, "Thread %d restarted", thr_id);
 	}
 
+	gettimeofday(&now, NULL);
+	get_datestamp(cgpu->init, &now);
+
 	/* Try to re-enable it */
 	gpu_devices[gpu] = true;
 	for (thr_id = 0; thr_id < gpu_threads; thr_id ++) {
@@ -4031,6 +4036,7 @@ int main (int argc, char *argv[])
 	for (j = 0; j < nDevs * opt_g_threads; j++) {
 		int gpu = j % nDevs;
 		struct cgpu_info *cgpu;
+		struct timeval now;
 
 		gpus[gpu].is_gpu = 1;
 		gpus[gpu].cpu_gpu = gpu;
@@ -4058,9 +4064,12 @@ int main (int argc, char *argv[])
 		if (!clStates[i]) {
 			applog(LOG_ERR, "Failed to init GPU thread %d", i);
 			gpu_devices[i] = false;
+			strcat(cgpu->init, "Never");
 			continue;
 		}
 		applog(LOG_INFO, "initCl() finished. Found %s", name);
+		gettimeofday(&now, NULL);
+		get_datestamp(cgpu->init, &now);
 
 		if (unlikely(thr_info_create(thr, NULL, gpuminer_thread, thr)))
 			quit(1, "thread %d create failed", i);

miner.h

@@ -157,6 +157,8 @@ struct cgpu_info {
 	unsigned int vwidth;
 	size_t max_work_size;
 	size_t work_size;
+
+	char init[40];
 };
 
 struct thr_info {