s390/kernel/perf_pai_ext.c

121 	struct paiext_map *cpump = mp->mapptr;
125 	if (refcount_dec_and_test(&cpump->refcnt))	/* Last reference gone */
151 	struct paiext_map *cpump;
161 	cpump = mp->mapptr;
162 	if (!cpump) {			/* Paiext_map allocated? */
164 		cpump = kzalloc(sizeof(*cpump), GFP_KERNEL);
165 		if (!cpump)
178 		mp->mapptr = cpump;
179 		cpump->area = kzalloc(PAIE1_CTRBLOCK_SZ, GFP_KERNEL);
180 		cpump->paiext_cb = kzalloc(PAIE1_CB_SZ, GFP_KERNEL);
181 		cpump->save = kvmalloc_array(paiext_cnt + 1,
184 		if (!cpump->save || !cpump->area || !cpump->paiext_cb) {
188 		refcount_set(&cpump->refcnt, 1);
189 		cpump->mode = a->sample_period ? PAI_MODE_SAMPLING
196 		if (cpump->mode == PAI_MODE_SAMPLING ||
197 		    (cpump->mode == PAI_MODE_COUNTING && a->sample_period)) {
201 		refcount_inc(&cpump->refcnt);
297 	struct paiext_map *cpump = mp->mapptr;
302 		return paiext_getctr(cpump->area,
306 		sum += paiext_getctr(cpump->area, i);
330 	struct paiext_map *cpump = mp->mapptr;
337 		cpump->event = event;
345 	struct paiext_map *cpump = mp->mapptr;
346 	struct paiext_cb *pcb = cpump->paiext_cb;
348 	if (++cpump->active_events == 1) {
349 		S390_lowcore.aicd = virt_to_phys(cpump->paiext_cb);
350 		pcb->acc = virt_to_phys(cpump->area) | 0x1;
365 	struct paiext_map *cpump = mp->mapptr;
371 		cpump->event = NULL;
379 	struct paiext_map *cpump = mp->mapptr;
380 	struct paiext_cb *pcb = cpump->paiext_cb;
383 	if (--cpump->active_events == 0) {
435 static int paiext_push_sample(size_t rawsize, struct paiext_map *cpump,
460 		raw.frag.data = cpump->save;
467 	memcpy((void *)PAI_SAVE_AREA(event), cpump->area,
476 	struct paiext_map *cpump = mp->mapptr;
477 	struct perf_event *event = cpump->event;
483 	rawsize = paiext_copy(cpump->save, cpump->area,
486 		rc = paiext_push_sample(rawsize, cpump, event);