diff options
| -rw-r--r-- | arch/x86/events/intel/uncore.c | 12 | ||||
| -rw-r--r-- | arch/x86/events/intel/uncore.h | 9 | ||||
| -rw-r--r-- | arch/x86/events/intel/uncore_snbep.c | 60 |
3 files changed, 47 insertions, 34 deletions
diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index 35b347027f93..a2b68bb7a30a 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -53,6 +53,18 @@ int uncore_pcibus_to_dieid(struct pci_bus *bus) return die_id; } +int uncore_die_to_segment(int die) +{ + struct pci_bus *bus = NULL; + + /* Find first pci bus which attributes to specified die. */ + while ((bus = pci_find_next_bus(bus)) && + (die != uncore_pcibus_to_dieid(bus))) + ; + + return bus ? pci_domain_nr(bus) : -EINVAL; +} + static void uncore_free_pcibus_map(void) { struct pci2phy_map *map, *tmp; diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h index 549cfb2224df..96569dc2119d 100644 --- a/arch/x86/events/intel/uncore.h +++ b/arch/x86/events/intel/uncore.h @@ -42,6 +42,7 @@ struct intel_uncore_pmu; struct intel_uncore_box; struct uncore_event_desc; struct freerunning_counters; +struct intel_uncore_topology; struct intel_uncore_type { const char *name; @@ -87,7 +88,7 @@ struct intel_uncore_type { * to identify which platform component each PMON block of that type is * supposed to monitor. */ - u64 *topology; + struct intel_uncore_topology *topology; /* * Optional callbacks for managing mapping of Uncore units to PMONs */ @@ -176,6 +177,11 @@ struct freerunning_counters { unsigned *box_offsets; }; +struct intel_uncore_topology { + u64 configuration; + int segment; +}; + struct pci2phy_map { struct list_head list; int segment; @@ -184,6 +190,7 @@ struct pci2phy_map { struct pci2phy_map *__find_pci2phy_map(int segment); int uncore_pcibus_to_dieid(struct pci_bus *bus); +int uncore_die_to_segment(int die); ssize_t uncore_event_show(struct device *dev, struct device_attribute *attr, char *buf); diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index b79951d0707c..acc3c0e52f4d 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -3684,7 +3684,8 @@ static struct intel_uncore_ops skx_uncore_iio_ops = { static inline u8 skx_iio_stack(struct intel_uncore_pmu *pmu, int die) { - return pmu->type->topology[die] >> (pmu->pmu_idx * BUS_NUM_STRIDE); + return pmu->type->topology[die].configuration >> + (pmu->pmu_idx * BUS_NUM_STRIDE); } static umode_t @@ -3697,19 +3698,14 @@ skx_iio_mapping_visible(struct kobject *kobj, struct attribute *attr, int die) } static ssize_t skx_iio_mapping_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { - struct pci_bus *bus = pci_find_next_bus(NULL); - struct intel_uncore_pmu *uncore_pmu = dev_to_uncore_pmu(dev); + struct intel_uncore_pmu *pmu = dev_to_uncore_pmu(dev); struct dev_ext_attribute *ea = to_dev_ext_attribute(attr); long die = (long)ea->var; - /* - * Current implementation is for single segment configuration hence it's - * safe to take the segment value from the first available root bus. - */ - return sprintf(buf, "%04x:%02x\n", pci_domain_nr(bus), - skx_iio_stack(uncore_pmu, die)); + return sprintf(buf, "%04x:%02x\n", pmu->type->topology[die].segment, + skx_iio_stack(pmu, die)); } static int skx_msr_cpu_bus_read(int cpu, u64 *topology) @@ -3746,34 +3742,32 @@ static int die_to_cpu(int die) static int skx_iio_get_topology(struct intel_uncore_type *type) { - int i, ret; - struct pci_bus *bus = NULL; - - /* - * Verified single-segment environments only; disabled for multiple - * segment topologies for now except VMD domains. - * VMD domains start at 0x10000 to not clash with ACPI _SEG domains. - */ - while ((bus = pci_find_next_bus(bus)) - && (!pci_domain_nr(bus) || pci_domain_nr(bus) > 0xffff)) - ; - if (bus) - return -EPERM; + int die, ret = -EPERM; - type->topology = kcalloc(uncore_max_dies(), sizeof(u64), GFP_KERNEL); + type->topology = kcalloc(uncore_max_dies(), sizeof(*type->topology), + GFP_KERNEL); if (!type->topology) return -ENOMEM; - for (i = 0; i < uncore_max_dies(); i++) { - ret = skx_msr_cpu_bus_read(die_to_cpu(i), &type->topology[i]); - if (ret) { - kfree(type->topology); - type->topology = NULL; - return ret; - } + for (die = 0; die < uncore_max_dies(); die++) { + ret = skx_msr_cpu_bus_read(die_to_cpu(die), + &type->topology[die].configuration); + if (ret) + break; + + ret = uncore_die_to_segment(die); + if (ret < 0) + break; + + type->topology[die].segment = ret; } - return 0; + if (ret < 0) { + kfree(type->topology); + type->topology = NULL; + } + + return ret; } static struct attribute_group skx_iio_mapping_group = { @@ -3794,7 +3788,7 @@ static int skx_iio_set_mapping(struct intel_uncore_type *type) struct dev_ext_attribute *eas = NULL; ret = skx_iio_get_topology(type); - if (ret) + if (ret < 0) goto clear_attr_update; ret = -ENOMEM; |