s390/kernel/perf_pai_ext.c

52 	struct perf_event *event;	/* Perf event for sampling */
54 	struct list_head syswide_list;	/* List system-wide sampling events */
102  * counting and sampling events.
104  * sampling and counting on that cpu is zero.
109 /* Free all memory allocated for event counting/sampling setup */
151  * sampling for pai_extension events.
153  * Only one instance of event pai_ext/NNPA_ALL/ for sampling is
155  * Several counting events are allowed in parallel, but no sampling event
285 	/* Allow only event NNPA_ALL for sampling. */  in paiext_event_init()
291 	/* Get a page to store last counter values for sampling */  in paiext_event_init()
372 	} else {				/* Sampling */  in paiext_start()
375 		/* Enable context switch callback for system-wide sampling */  in paiext_start()
411 	} else {				/* Sampling */  in paiext_stop()
471  * called when sampling is active. Function perf_sched_cb_inc()
543  * but for sampling only event NNPA_ALL is allowed.
570  * used for the CPU Measurement Sampling facility.