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Peter Anvin" , linux-kernel@vger.kernel.org Cc: "Liang, Kan" Subject: [PATCH 1/2] perf/x86/intel/uncore: Store the logical die id instead of the physical die id. Date: Fri, 8 Jan 2021 09:35:48 -0600 Message-Id: <20210108153549.108989-2-steve.wahl@hpe.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210108153549.108989-1-steve.wahl@hpe.com> References: <20210108153549.108989-1-steve.wahl@hpe.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-08_07:2021-01-07,2021-01-08 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 mlxlogscore=999 malwarescore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 suspectscore=0 mlxscore=0 clxscore=1015 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101080089 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The phys_id isn't really used other than to map to a logical die id. Calculate the logical die id earlier, and store that instead of the phys_id. Signed-off-by: Steve Wahl --- arch/x86/events/intel/uncore.c | 58 ++++++++++------------------ arch/x86/events/intel/uncore.h | 5 +-- arch/x86/events/intel/uncore_snb.c | 2 +- arch/x86/events/intel/uncore_snbep.c | 31 +++++++-------- 4 files changed, 39 insertions(+), 57 deletions(-) diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index 357258f82dc8..33c8180d5a87 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -31,21 +31,21 @@ struct event_constraint uncore_constraint_empty = MODULE_LICENSE("GPL"); -int uncore_pcibus_to_physid(struct pci_bus *bus) +int uncore_pcibus_to_dieid(struct pci_bus *bus) { struct pci2phy_map *map; - int phys_id = -1; + int die_id = -1; raw_spin_lock(&pci2phy_map_lock); list_for_each_entry(map, &pci2phy_map_head, list) { if (map->segment == pci_domain_nr(bus)) { - phys_id = map->pbus_to_physid[bus->number]; + die_id = map->pbus_to_dieid[bus->number]; break; } } raw_spin_unlock(&pci2phy_map_lock); - return phys_id; + return die_id; } static void uncore_free_pcibus_map(void) @@ -86,7 +86,7 @@ struct pci2phy_map *__find_pci2phy_map(int segment) alloc = NULL; map->segment = segment; for (i = 0; i < 256; i++) - map->pbus_to_physid[i] = -1; + map->pbus_to_dieid[i] = -1; list_add_tail(&map->list, &pci2phy_map_head); end: @@ -332,7 +332,6 @@ static struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type, uncore_pmu_init_hrtimer(box); box->cpu = -1; - box->pci_phys_id = -1; box->dieid = -1; /* set default hrtimer timeout */ @@ -993,18 +992,11 @@ uncore_types_init(struct intel_uncore_type **types, bool setid) /* * Get the die information of a PCI device. * @pdev: The PCI device. - * @phys_id: The physical socket id which the device maps to. * @die: The die id which the device maps to. */ -static int uncore_pci_get_dev_die_info(struct pci_dev *pdev, - int *phys_id, int *die) +static int uncore_pci_get_dev_die_info(struct pci_dev *pdev, int *die) { - *phys_id = uncore_pcibus_to_physid(pdev->bus); - if (*phys_id < 0) - return -ENODEV; - - *die = (topology_max_die_per_package() > 1) ? *phys_id : - topology_phys_to_logical_pkg(*phys_id); + *die = uncore_pcibus_to_dieid(pdev->bus); if (*die < 0) return -EINVAL; @@ -1046,13 +1038,12 @@ uncore_pci_find_dev_pmu(struct pci_dev *pdev, const struct pci_device_id *ids) * @pdev: The PCI device. * @type: The corresponding PMU type of the device. * @pmu: The corresponding PMU of the device. - * @phys_id: The physical socket id which the device maps to. * @die: The die id which the device maps to. */ static int uncore_pci_pmu_register(struct pci_dev *pdev, struct intel_uncore_type *type, struct intel_uncore_pmu *pmu, - int phys_id, int die) + int die) { struct intel_uncore_box *box; int ret; @@ -1070,7 +1061,6 @@ static int uncore_pci_pmu_register(struct pci_dev *pdev, WARN_ON_ONCE(pmu->func_id != pdev->devfn); atomic_inc(&box->refcnt); - box->pci_phys_id = phys_id; box->dieid = die; box->pci_dev = pdev; box->pmu = pmu; @@ -1097,9 +1087,9 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id { struct intel_uncore_type *type; struct intel_uncore_pmu *pmu = NULL; - int phys_id, die, ret; + int die, ret; - ret = uncore_pci_get_dev_die_info(pdev, &phys_id, &die); + ret = uncore_pci_get_dev_die_info(pdev, &die); if (ret) return ret; @@ -1132,7 +1122,7 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id pmu = &type->pmus[UNCORE_PCI_DEV_IDX(id->driver_data)]; } - ret = uncore_pci_pmu_register(pdev, type, pmu, phys_id, die); + ret = uncore_pci_pmu_register(pdev, type, pmu, die); pci_set_drvdata(pdev, pmu->boxes[die]); @@ -1142,17 +1132,12 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id /* * Unregister the PMU of a PCI device * @pmu: The corresponding PMU is unregistered. - * @phys_id: The physical socket id which the device maps to. * @die: The die id which the device maps to. */ -static void uncore_pci_pmu_unregister(struct intel_uncore_pmu *pmu, - int phys_id, int die) +static void uncore_pci_pmu_unregister(struct intel_uncore_pmu *pmu, int die) { struct intel_uncore_box *box = pmu->boxes[die]; - if (WARN_ON_ONCE(phys_id != box->pci_phys_id)) - return; - pmu->boxes[die] = NULL; if (atomic_dec_return(&pmu->activeboxes) == 0) uncore_pmu_unregister(pmu); @@ -1164,9 +1149,9 @@ static void uncore_pci_remove(struct pci_dev *pdev) { struct intel_uncore_box *box; struct intel_uncore_pmu *pmu; - int i, phys_id, die; + int i, die; - if (uncore_pci_get_dev_die_info(pdev, &phys_id, &die)) + if (uncore_pci_get_dev_die_info(pdev, &die)) return; box = pci_get_drvdata(pdev); @@ -1185,7 +1170,7 @@ static void uncore_pci_remove(struct pci_dev *pdev) pci_set_drvdata(pdev, NULL); - uncore_pci_pmu_unregister(pmu, phys_id, die); + uncore_pci_pmu_unregister(pmu, die); } static int uncore_bus_notify(struct notifier_block *nb, @@ -1194,7 +1179,7 @@ static int uncore_bus_notify(struct notifier_block *nb, struct device *dev = data; struct pci_dev *pdev = to_pci_dev(dev); struct intel_uncore_pmu *pmu; - int phys_id, die; + int die; /* Unregister the PMU when the device is going to be deleted. */ if (action != BUS_NOTIFY_DEL_DEVICE) @@ -1204,10 +1189,10 @@ static int uncore_bus_notify(struct notifier_block *nb, if (!pmu) return NOTIFY_DONE; - if (uncore_pci_get_dev_die_info(pdev, &phys_id, &die)) + if (uncore_pci_get_dev_die_info(pdev, &die)) return NOTIFY_DONE; - uncore_pci_pmu_unregister(pmu, phys_id, die); + uncore_pci_pmu_unregister(pmu, die); return NOTIFY_OK; } @@ -1224,7 +1209,7 @@ static void uncore_pci_sub_driver_init(void) struct pci_dev *pci_sub_dev; bool notify = false; unsigned int devfn; - int phys_id, die; + int die; while (ids && ids->vendor) { pci_sub_dev = NULL; @@ -1244,12 +1229,11 @@ static void uncore_pci_sub_driver_init(void) if (!pmu) continue; - if (uncore_pci_get_dev_die_info(pci_sub_dev, - &phys_id, &die)) + if (uncore_pci_get_dev_die_info(pci_sub_dev, &die)) continue; if (!uncore_pci_pmu_register(pci_sub_dev, type, pmu, - phys_id, die)) + die)) notify = true; } ids++; diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h index 9efea154349d..a3c6e1643ad2 100644 --- a/arch/x86/events/intel/uncore.h +++ b/arch/x86/events/intel/uncore.h @@ -124,7 +124,6 @@ struct intel_uncore_extra_reg { }; struct intel_uncore_box { - int pci_phys_id; int dieid; /* Logical die ID */ int n_active; /* number of active events */ int n_events; @@ -173,11 +172,11 @@ struct freerunning_counters { struct pci2phy_map { struct list_head list; int segment; - int pbus_to_physid[256]; + int pbus_to_dieid[256]; }; struct pci2phy_map *__find_pci2phy_map(int segment); -int uncore_pcibus_to_physid(struct pci_bus *bus); +int uncore_pcibus_to_dieid(struct pci_bus *bus); ssize_t uncore_event_show(struct device *dev, struct device_attribute *attr, char *buf); diff --git a/arch/x86/events/intel/uncore_snb.c b/arch/x86/events/intel/uncore_snb.c index 098f893e2e22..51271288499e 100644 --- a/arch/x86/events/intel/uncore_snb.c +++ b/arch/x86/events/intel/uncore_snb.c @@ -657,7 +657,7 @@ int snb_pci2phy_map_init(int devid) pci_dev_put(dev); return -ENOMEM; } - map->pbus_to_physid[bus] = 0; + map->pbus_to_dieid[bus] = 0; raw_spin_unlock(&pci2phy_map_lock); pci_dev_put(dev); diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index 7bdb1821215d..2d7014dc46f6 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -1359,7 +1359,7 @@ static struct pci_driver snbep_uncore_pci_driver = { static int snbep_pci2phy_map_init(int devid, int nodeid_loc, int idmap_loc, bool reverse) { struct pci_dev *ubox_dev = NULL; - int i, bus, nodeid, segment; + int i, bus, nodeid, segment, die_id; struct pci2phy_map *map; int err = 0; u32 config = 0; @@ -1395,7 +1395,11 @@ static int snbep_pci2phy_map_init(int devid, int nodeid_loc, int idmap_loc, bool */ for (i = 0; i < 8; i++) { if (nodeid == ((config >> (3 * i)) & 0x7)) { - map->pbus_to_physid[bus] = i; + if (topology_max_die_per_package() > 1) + die_id = i; + else + die_id = topology_phys_to_logical_pkg(i); + map->pbus_to_dieid[bus] = die_id; break; } } @@ -1412,17 +1416,17 @@ static int snbep_pci2phy_map_init(int devid, int nodeid_loc, int idmap_loc, bool i = -1; if (reverse) { for (bus = 255; bus >= 0; bus--) { - if (map->pbus_to_physid[bus] >= 0) - i = map->pbus_to_physid[bus]; + if (map->pbus_to_dieid[bus] >= 0) + i = map->pbus_to_dieid[bus]; else - map->pbus_to_physid[bus] = i; + map->pbus_to_dieid[bus] = i; } } else { for (bus = 0; bus <= 255; bus++) { - if (map->pbus_to_physid[bus] >= 0) - i = map->pbus_to_physid[bus]; + if (map->pbus_to_dieid[bus] >= 0) + i = map->pbus_to_dieid[bus]; else - map->pbus_to_physid[bus] = i; + map->pbus_to_dieid[bus] = i; } } } @@ -4646,19 +4650,14 @@ int snr_uncore_pci_init(void) static struct pci_dev *snr_uncore_get_mc_dev(int id) { struct pci_dev *mc_dev = NULL; - int phys_id, pkg; + int pkg; while (1) { mc_dev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x3451, mc_dev); if (!mc_dev) break; - phys_id = uncore_pcibus_to_physid(mc_dev->bus); - if (phys_id < 0) - continue; - pkg = topology_phys_to_logical_pkg(phys_id); - if (pkg < 0) - continue; - else if (pkg == id) + pkg = uncore_pcibus_to_dieid(mc_dev->bus); + if (pkg == id) break; } return mc_dev; -- 2.26.2