dev/dt/dt_prov_kprobe.c

36 int dt_prov_kprobe_alloc(struct dt_probe *dtp, struct dt_softc *sc,
39 int dt_prov_kprobe_dealloc(struct dt_probe *dtp, struct dt_softc *sc,
46 	struct dt_probe* dtp;
120 	struct dt_probe *dtp;
190 		dtp = dt_dev_alloc_probe(name, KPROBE_ENTRY, &dt_prov_kprobe);
191 		if (dtp == NULL)
197 		kprobe_dtp->dtp = dtp;
199 		dtp->dtp_addr = inst;
200 		dtp->dtp_nargs = db_ctf_func_numargs(symp);
201 		dt_dev_register_probe(dtp);
203 		SLIST_INSERT_HEAD(&dtpf_entry[INSTTOIDX(dtp->dtp_addr)], kprobe_dtp, kprobe_next);
225 		dtp = dt_dev_alloc_probe(name, KPROBE_RETURN, &dt_prov_kprobe);
226 		if (dtp == NULL)
232 		kprobe_dtp->dtp = dtp;
234 		dtp->dtp_addr = inst;
235 		dt_dev_register_probe(dtp);
236 		SLIST_INSERT_HEAD(&dtpf_return[INSTTOIDX(dtp->dtp_addr)], kprobe_dtp, kprobe_next);
245 dt_prov_kprobe_alloc(struct dt_probe *dtp, struct dt_softc *sc,
252 	dp = dt_pcb_alloc(dtp, sc);
257 	dtp->dtp_ref++;
258 	KASSERT(dtp->dtp_ref != 0);
260 	if (dtp->dtp_ref == 1) {
262 		db_write_bytes(dtp->dtp_addr, BKPT_SIZE, &patch);
272 dt_prov_kprobe_dealloc(struct dt_probe *dtp, struct dt_softc *sc,
279 	if (strcmp(dtp->dtp_name, KPROBE_ENTRY) == 0) {
282 	} else if (strcmp(dtp->dtp_name, KPROBE_RETURN) == 0) {
293 	dtp->dtp_ref--;
295 	if (dtp->dtp_ref == 0) {
297 		db_write_bytes(dtp->dtp_addr, size, &patch);
308 	struct dt_probe *dtp;
328 		dtp = kprobe_dtp->dtp;
330 		if (dtp->dtp_addr != addr)
337 		if (!dtp->dtp_recording)
341 		SMR_SLIST_FOREACH(dp, &dtp->dtp_pcbs, dp_pnext) {
370 		dtp = kprobe_dtp->dtp;
372 		if (dtp->dtp_addr != addr)
377 		if (!dtp->dtp_recording)
381 		SMR_SLIST_FOREACH(dp, &dtp->dtp_pcbs, dp_pnext) {
414 	struct dt_probe *dtp;
420 			dtp = kprobe_dtp->dtp;
421 			dtp->dtp_ref++;
423 			if (dtp->dtp_ref == 1) {
426 				db_write_bytes(dtp->dtp_addr, BKPT_SIZE, &patch);
438 	struct dt_probe *dtp;
444 			dtp = kprobe_dtp->dtp;
445 			dtp->dtp_ref--;
447 			if (dtp->dtp_ref == 0) {
450 				db_write_bytes(dtp->dtp_addr, SSF_SIZE, &patch);