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-rw-r--r--arch/x86/events/intel/uncore.c44
1 files changed, 4 insertions, 40 deletions
diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c
index 8c4ccdc3a3f3..56c5235dcc29 100644
--- a/arch/x86/events/intel/uncore.c
+++ b/arch/x86/events/intel/uncore.c
@@ -764,30 +764,6 @@ static void uncore_pmu_unregister(struct intel_uncore_pmu *pmu)
pmu->registered = false;
}
-static void __uncore_exit_boxes(struct intel_uncore_type *type, int cpu)
-{
- struct intel_uncore_pmu *pmu = type->pmus;
- struct intel_uncore_box *box;
- int i, pkg;
-
- if (pmu) {
- pkg = topology_physical_package_id(cpu);
- for (i = 0; i < type->num_boxes; i++, pmu++) {
- box = pmu->boxes[pkg];
- if (box)
- uncore_box_exit(box);
- }
- }
-}
-
-static void uncore_exit_boxes(void *dummy)
-{
- struct intel_uncore_type **types;
-
- for (types = uncore_msr_uncores; *types; types++)
- __uncore_exit_boxes(*types++, smp_processor_id());
-}
-
static void uncore_free_boxes(struct intel_uncore_pmu *pmu)
{
int pkg;
@@ -1078,22 +1054,12 @@ static int uncore_cpu_dying(unsigned int cpu)
return 0;
}
-static int first_init;
-
static int uncore_cpu_starting(unsigned int cpu)
{
struct intel_uncore_type *type, **types = uncore_msr_uncores;
struct intel_uncore_pmu *pmu;
struct intel_uncore_box *box;
- int i, pkg, ncpus = 1;
-
- if (first_init) {
- /*
- * On init we get the number of online cpus in the package
- * and set refcount for all of them.
- */
- ncpus = cpumask_weight(topology_core_cpumask(cpu));
- }
+ int i, pkg;
pkg = topology_logical_package_id(cpu);
for (; *types; types++) {
@@ -1104,7 +1070,7 @@ static int uncore_cpu_starting(unsigned int cpu)
if (!box)
continue;
/* The first cpu on a package activates the box */
- if (atomic_add_return(ncpus, &box->refcnt) == ncpus)
+ if (atomic_inc_return(&box->refcnt) == 1)
uncore_box_init(box);
}
}
@@ -1408,19 +1374,17 @@ static int __init intel_uncore_init(void)
"perf/x86/intel/uncore:prepare",
uncore_cpu_prepare, NULL);
}
- first_init = 1;
+
cpuhp_setup_state(CPUHP_AP_PERF_X86_UNCORE_STARTING,
"perf/x86/uncore:starting",
uncore_cpu_starting, uncore_cpu_dying);
- first_init = 0;
+
cpuhp_setup_state(CPUHP_AP_PERF_X86_UNCORE_ONLINE,
"perf/x86/uncore:online",
uncore_event_cpu_online, uncore_event_cpu_offline);
return 0;
err:
- /* Undo box->init_box() */
- on_each_cpu_mask(&uncore_cpu_mask, uncore_exit_boxes, NULL, 1);
uncore_types_exit(uncore_msr_uncores);
uncore_pci_exit();
return ret;