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Merge tag 'perf-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull perf fixes from Ingo Molnar:
 "Four Intel uncore PMU driver fixes by Zide Chen"

* tag 'perf-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/uncore: Remove extra double quote mark
  perf/x86/intel/uncore: Fix die ID init and look up bugs
  perf/x86/intel/uncore: Skip discovery table for offline dies
  perf/x86/intel/uncore: Fix iounmap() leak on global_init failure
This commit is contained in:
Linus Torvalds committed 2026-04-12 08:17:52 -07:00
2 parents 8648ac819d 16bcbe6738
commit c919577eee
3 files changed
+42 -37
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arch/x86/events/intel/uncore.c
+1
View File
@@ -67,6 +67,7 @@ int uncore_die_to_segment(int die)
return bus ? pci_domain_nr(bus) : -EINVAL;
}
/* Note: This API can only be used when NUMA information is available. */
int uncore_device_to_die(struct pci_dev *dev)
{
int node = pcibus_to_node(dev->bus);
arch/x86/events/intel/uncore_discovery.c
+11 -6
View File
@@ -264,6 +264,7 @@ static int __parse_discovery_table(struct uncore_discovery_domain *domain,
struct uncore_unit_discovery unit;
void __iomem *io_addr;
unsigned long size;
int ret = 0;
int i;
size = UNCORE_DISCOVERY_GLOBAL_MAP_SIZE;
@@ -273,21 +274,23 @@ static int __parse_discovery_table(struct uncore_discovery_domain *domain,
/* Read Global Discovery State */
memcpy_fromio(&global, io_addr, sizeof(struct uncore_global_discovery));
iounmap(io_addr);
if (uncore_discovery_invalid_unit(global)) {
pr_info("Invalid Global Discovery State: 0x%llx 0x%llx 0x%llx\n",
global.table1, global.ctl, global.table3);
iounmap(io_addr);
return -EINVAL;
}
iounmap(io_addr);
size = (1 + global.max_units) * global.stride * 8;
io_addr = ioremap(addr, size);
if (!io_addr)
return -ENOMEM;
if (domain->global_init && domain->global_init(global.ctl))
return -ENODEV;
if (domain->global_init && domain->global_init(global.ctl)) {
ret = -ENODEV;
goto out;
}
/* Parsing Unit Discovery State */
for (i = 0; i < global.max_units; i++) {
@@ -307,8 +310,10 @@ static int __parse_discovery_table(struct uncore_discovery_domain *domain,
}
*parsed = true;
out:
iounmap(io_addr);
return 0;
return ret;
}
static int parse_discovery_table(struct uncore_discovery_domain *domain,
@@ -366,7 +371,7 @@ static bool uncore_discovery_pci(struct uncore_discovery_domain *domain)
(val & UNCORE_DISCOVERY_DVSEC2_BIR_MASK) * UNCORE_DISCOVERY_BIR_STEP;
die = get_device_die_id(dev);
if (die < 0)
if ((die < 0) || (die >= uncore_max_dies()))
continue;
parse_discovery_table(domain, dev, die, bar_offset, &parsed);
arch/x86/events/intel/uncore_snbep.c
+30 -31
View File
@@ -1459,13 +1459,7 @@ static int snbep_pci2phy_map_init(int devid, int nodeid_loc, int idmap_loc, bool
}
map->pbus_to_dieid[bus] = die_id = uncore_device_to_die(ubox_dev);
raw_spin_unlock(&pci2phy_map_lock);
if (WARN_ON_ONCE(die_id == -1)) {
err = -EINVAL;
break;
}
}
}
@@ -6420,7 +6414,7 @@ static void spr_update_device_location(int type_id)
while ((dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, dev)) != NULL) {
die = uncore_device_to_die(dev);
die = uncore_pcibus_to_dieid(dev->bus);
if (die < 0)
continue;
@@ -6444,6 +6438,11 @@ static void spr_update_device_location(int type_id)
int spr_uncore_pci_init(void)
{
int ret = snbep_pci2phy_map_init(0x3250, SKX_CPUNODEID, SKX_GIDNIDMAP, true);
if (ret)
return ret;
/*
* The discovery table of UPI on some SPR variant is broken,
* which impacts the detection of both UPI and M3UPI uncore PMON.
@@ -6935,34 +6934,34 @@ static struct freerunning_counters dmr_iio_freerunning[] = {
static struct uncore_event_desc dmr_uncore_iio_freerunning_events[] = {
/* ITC Free Running Data BW counter for inbound traffic */
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port0, 0x10, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port1, 0x11, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port2, 0x12, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port3, 0x13, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port4, 0x14, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port5, 0x15, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port6, 0x16, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port7, 0x17, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port0, 0x10, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port1, 0x11, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port2, 0x12, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port3, 0x13, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port4, 0x14, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port5, 0x15, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port6, 0x16, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(inb_data_port7, 0x17, 3.814697266e-6),
/* ITC Free Running BW IN counters */
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port0, 0x20, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port1, 0x21, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port2, 0x22, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port3, 0x23, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port4, 0x24, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port5, 0x25, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port6, 0x26, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port7, 0x27, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port0, 0x20, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port1, 0x21, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port2, 0x22, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port3, 0x23, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port4, 0x24, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port5, 0x25, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port6, 0x26, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_in_port7, 0x27, 3.814697266e-6),
/* ITC Free Running BW OUT counters */
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port0, 0x30, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port1, 0x31, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port2, 0x32, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port3, 0x33, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port4, 0x34, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port5, 0x35, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port6, 0x36, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port7, 0x37, "3.814697266e-6"),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port0, 0x30, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port1, 0x31, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port2, 0x32, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port3, 0x33, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port4, 0x34, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port5, 0x35, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port6, 0x36, 3.814697266e-6),
INTEL_UNCORE_FR_EVENT_DESC(bw_out_port7, 0x37, 3.814697266e-6),
/* Free Running Clock Counter */
INTEL_UNCORE_EVENT_DESC(clockticks, "event=0xff,umask=0x40"),