82 static struct sbprof_tb sbp;  variable
137 #define TB_FULL (sbp.next_tb_sample == MAX_TB_SAMPLES)
198 	sbp.tb_armed = 1;  in arm_tb()
207 	if (sbp.next_tb_sample < MAX_TB_SAMPLES) {  in sbprof_tb_intr()
209 		u64 *p = sbp.sbprof_tbbuf[sbp.next_tb_sample++];  in sbprof_tb_intr()
231 		if (!sbp.tb_enable) {  in sbprof_tb_intr()
235 			sbp.tb_armed = 0;  in sbprof_tb_intr()
236 			wake_up_interruptible(&sbp.tb_sync);  in sbprof_tb_intr()
245 		sbp.tb_armed = 0;  in sbprof_tb_intr()
246 		if (!sbp.tb_enable)  in sbprof_tb_intr()
247 			wake_up_interruptible(&sbp.tb_sync);  in sbprof_tb_intr()
248 		wake_up_interruptible(&sbp.tb_read);  in sbprof_tb_intr()
270 	if (xchg(&sbp.tb_enable, 1))  in sbprof_zbprof_start()
275 	sbp.next_tb_sample = 0;  in sbprof_zbprof_start()
279 			  DEVNAME " trace freeze", &sbp);  in sbprof_zbprof_start()
295 	if (request_irq(K_INT_PERF_CNT, sbprof_pc_intr, 0, DEVNAME " scd perfcnt", &sbp)) {  in sbprof_zbprof_start()
296 		free_irq(K_INT_TRACE_FREEZE, &sbp);  in sbprof_zbprof_start()
378 	if (sbp.tb_enable) {  in sbprof_zbprof_stop()
385 		err = wait_event_interruptible(sbp.tb_sync, !sbp.tb_armed);  in sbprof_zbprof_stop()
391 		sbp.tb_enable = 0;  in sbprof_zbprof_stop()
392 		free_irq(K_INT_TRACE_FREEZE, &sbp);  in sbprof_zbprof_stop()
393 		free_irq(K_INT_PERF_CNT, &sbp);  in sbprof_zbprof_stop()
409 	if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED)  in sbprof_tb_open()
412 	memset(&sbp, 0, sizeof(struct sbprof_tb));  in sbprof_tb_open()
413 	sbp.sbprof_tbbuf = vzalloc(MAX_TBSAMPLE_BYTES);  in sbprof_tb_open()
414 	if (!sbp.sbprof_tbbuf) {  in sbprof_tb_open()
415 		sbp.open = SB_CLOSED;  in sbprof_tb_open()
420 	init_waitqueue_head(&sbp.tb_sync);  in sbprof_tb_open()
421 	init_waitqueue_head(&sbp.tb_read);  in sbprof_tb_open()
422 	mutex_init(&sbp.lock);  in sbprof_tb_open()
424 	sbp.open = SB_OPEN;  in sbprof_tb_open()
435 	if (minor != 0 || sbp.open != SB_CLOSED)  in sbprof_tb_release()
438 	mutex_lock(&sbp.lock);  in sbprof_tb_release()
440 	if (sbp.tb_armed || sbp.tb_enable)  in sbprof_tb_release()
443 	vfree(sbp.sbprof_tbbuf);  in sbprof_tb_release()
444 	sbp.open = SB_CLOSED;  in sbprof_tb_release()
447 	mutex_unlock(&sbp.lock);  in sbprof_tb_release()
464 	mutex_lock(&sbp.lock);  in sbprof_tb_read()
471 	while (size && (cur_sample < sbp.next_tb_sample)) {  in sbprof_tb_read()
475 		src = (char *)(((long)sbp.sbprof_tbbuf[cur_sample])+sample_off);  in sbprof_tb_read()
479 			mutex_unlock(&sbp.lock);  in sbprof_tb_read()
498 	mutex_unlock(&sbp.lock);  in sbprof_tb_read()
511 		mutex_lock(&sbp.lock);  in sbprof_tb_ioctl()
513 		mutex_unlock(&sbp.lock);  in sbprof_tb_ioctl()
517 		mutex_lock(&sbp.lock);  in sbprof_tb_ioctl()
519 		mutex_unlock(&sbp.lock);  in sbprof_tb_ioctl()
523 		err = wait_event_interruptible(sbp.tb_read, TB_FULL);  in sbprof_tb_ioctl()
580 	sbp.open = SB_CLOSED;  in sbprof_tb_init()