diff options
Diffstat (limited to 'drivers/perf/arm-cmn.c')
-rw-r--r-- | drivers/perf/arm-cmn.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 005a0d83bcac..acff8683af2c 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -193,7 +193,7 @@ struct arm_cmn_node { u8 occupid_count; }; /* XP */ - int dtc; + u8 dtc; }; union { u8 event[4]; @@ -968,14 +968,14 @@ static int arm_cmn_event_init(struct perf_event *event) if (!hw->dn) return -EINVAL; for (dn = hw->dn; dn->type == type; dn++) { - if (!bynodeid) { - hw->num_dns++; - } else if (dn->id != nodeid) { + if (bynodeid && dn->id != nodeid) { hw->dn++; - } else { - hw->num_dns = 1; - break; + continue; } + hw->dtcs_used |= arm_cmn_node_to_xp(cmn, dn)->dtc; + hw->num_dns++; + if (bynodeid) + break; } if (!hw->num_dns) { @@ -985,11 +985,6 @@ static int arm_cmn_event_init(struct perf_event *event) nodeid, nid.x, nid.y, nid.port, nid.dev, type); return -EINVAL; } - /* - * By assuming events count in all DTC domains, we cunningly avoid - * needing to know anything about how XPs are assigned to domains. - */ - hw->dtcs_used = (1U << cmn->num_dtcs) - 1; return arm_cmn_validate_group(event); } @@ -1311,6 +1306,7 @@ static int arm_cmn_init_dtcs(struct arm_cmn *cmn) { struct arm_cmn_node *dn, *xp; int dtc_idx = 0; + u8 dtcs_present = (1 << cmn->num_dtcs) - 1; cmn->dtc = devm_kcalloc(cmn->dev, cmn->num_dtcs, sizeof(cmn->dtc[0]), GFP_KERNEL); if (!cmn->dtc) @@ -1322,8 +1318,7 @@ static int arm_cmn_init_dtcs(struct arm_cmn *cmn) for (dn = cmn->dns; dn->type; dn++) { if (dn->type == CMN_TYPE_XP) { - if (dn->dtc < 0 && cmn->num_dtcs == 1) - dn->dtc = 0; + dn->dtc &= dtcs_present; continue; } @@ -1333,8 +1328,8 @@ static int arm_cmn_init_dtcs(struct arm_cmn *cmn) if (dn->type == CMN_TYPE_DTC) { int err; /* We do at least know that a DTC's XP must be in that DTC's domain */ - if (xp->dtc < 0) - xp->dtc = dtc_idx; + if (xp->dtc == 0xf) + xp->dtc = 1 << dtc_idx; err = arm_cmn_init_dtc(cmn, dn, dtc_idx++); if (err) return err; @@ -1435,7 +1430,7 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset) if (xp->id == (1 << 3)) cmn->mesh_x = xp->logid; - xp->dtc = -1; + xp->dtc = 0xf; xp->dtm = dtm - cmn->dtms; arm_cmn_init_dtm(dtm++, xp); |