70 static struct sbprof_tb sbp;  variable
125 #define TB_FULL (sbp.next_tb_sample == MAX_TB_SAMPLES)
186 	sbp.tb_armed = 1;  in arm_tb()
195 	if (sbp.next_tb_sample < MAX_TB_SAMPLES) {  in sbprof_tb_intr()
197 		u64 *p = sbp.sbprof_tbbuf[sbp.next_tb_sample++];  in sbprof_tb_intr()
219 		if (!sbp.tb_enable) {  in sbprof_tb_intr()
223 			sbp.tb_armed = 0;  in sbprof_tb_intr()
224 			wake_up_interruptible(&sbp.tb_sync);  in sbprof_tb_intr()
233 		sbp.tb_armed = 0;  in sbprof_tb_intr()
234 		if (!sbp.tb_enable)  in sbprof_tb_intr()
235 			wake_up_interruptible(&sbp.tb_sync);  in sbprof_tb_intr()
236 		wake_up_interruptible(&sbp.tb_read);  in sbprof_tb_intr()
258 	if (xchg(&sbp.tb_enable, 1))  in sbprof_zbprof_start()
263 	sbp.next_tb_sample = 0;  in sbprof_zbprof_start()
267 			  DEVNAME " trace freeze", &sbp);  in sbprof_zbprof_start()
283 	if (request_irq(K_INT_PERF_CNT, sbprof_pc_intr, 0, DEVNAME " scd perfcnt", &sbp)) {  in sbprof_zbprof_start()
284 		free_irq(K_INT_TRACE_FREEZE, &sbp);  in sbprof_zbprof_start()
366 	if (sbp.tb_enable) {  in sbprof_zbprof_stop()
373 		err = wait_event_interruptible(sbp.tb_sync, !sbp.tb_armed);  in sbprof_zbprof_stop()
379 		sbp.tb_enable = 0;  in sbprof_zbprof_stop()
380 		free_irq(K_INT_TRACE_FREEZE, &sbp);  in sbprof_zbprof_stop()
381 		free_irq(K_INT_PERF_CNT, &sbp);  in sbprof_zbprof_stop()
397 	if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED)  in sbprof_tb_open()
400 	memset(&sbp, 0, sizeof(struct sbprof_tb));  in sbprof_tb_open()
401 	sbp.sbprof_tbbuf = vzalloc(MAX_TBSAMPLE_BYTES);  in sbprof_tb_open()
402 	if (!sbp.sbprof_tbbuf) {  in sbprof_tb_open()
403 		sbp.open = SB_CLOSED;  in sbprof_tb_open()
408 	init_waitqueue_head(&sbp.tb_sync);  in sbprof_tb_open()
409 	init_waitqueue_head(&sbp.tb_read);  in sbprof_tb_open()
410 	mutex_init(&sbp.lock);  in sbprof_tb_open()
412 	sbp.open = SB_OPEN;  in sbprof_tb_open()
423 	if (minor != 0 || sbp.open != SB_CLOSED)  in sbprof_tb_release()
426 	mutex_lock(&sbp.lock);  in sbprof_tb_release()
428 	if (sbp.tb_armed || sbp.tb_enable)  in sbprof_tb_release()
431 	vfree(sbp.sbprof_tbbuf);  in sbprof_tb_release()
432 	sbp.open = SB_CLOSED;  in sbprof_tb_release()
435 	mutex_unlock(&sbp.lock);  in sbprof_tb_release()
452 	mutex_lock(&sbp.lock);  in sbprof_tb_read()
459 	while (size && (cur_sample < sbp.next_tb_sample)) {  in sbprof_tb_read()
463 		src = (char *)(((long)sbp.sbprof_tbbuf[cur_sample])+sample_off);  in sbprof_tb_read()
467 			mutex_unlock(&sbp.lock);  in sbprof_tb_read()
486 	mutex_unlock(&sbp.lock);  in sbprof_tb_read()
499 		mutex_lock(&sbp.lock);  in sbprof_tb_ioctl()
501 		mutex_unlock(&sbp.lock);  in sbprof_tb_ioctl()
505 		mutex_lock(&sbp.lock);  in sbprof_tb_ioctl()
507 		mutex_unlock(&sbp.lock);  in sbprof_tb_ioctl()
511 		err = wait_event_interruptible(sbp.tb_read, TB_FULL);  in sbprof_tb_ioctl()
568 	sbp.open = SB_CLOSED;  in sbprof_tb_init()