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path: root/drivers/perf/arm-cmn.c
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Diffstat (limited to 'drivers/perf/arm-cmn.c')
-rw-r--r--drivers/perf/arm-cmn.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index a76ff594f3ca..1328159fe564 100644
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c
@@ -616,7 +616,7 @@ static struct attribute *arm_cmn_cpumask_attrs[] = {
NULL,
};
-static struct attribute_group arm_cmn_cpumask_attr_group = {
+static const struct attribute_group arm_cmn_cpumask_attr_group = {
.attrs = arm_cmn_cpumask_attrs,
};
@@ -1150,7 +1150,7 @@ static int arm_cmn_commit_txn(struct pmu *pmu)
static int arm_cmn_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node)
{
struct arm_cmn *cmn;
- unsigned int target;
+ unsigned int i, target;
cmn = hlist_entry_safe(node, struct arm_cmn, cpuhp_node);
if (cpu != cmn->cpu)
@@ -1161,6 +1161,8 @@ static int arm_cmn_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node)
return 0;
perf_pmu_migrate_context(&cmn->pmu, cpu, target);
+ for (i = 0; i < cmn->num_dtcs; i++)
+ irq_set_affinity_hint(cmn->dtc[i].irq, cpumask_of(target));
cmn->cpu = target;
return 0;
}
@@ -1502,7 +1504,7 @@ static int arm_cmn_probe(struct platform_device *pdev)
struct arm_cmn *cmn;
const char *name;
static atomic_t id;
- int err, rootnode, this_id;
+ int err, rootnode;
cmn = devm_kzalloc(&pdev->dev, sizeof(*cmn), GFP_KERNEL);
if (!cmn)
@@ -1549,14 +1551,9 @@ static int arm_cmn_probe(struct platform_device *pdev)
.cancel_txn = arm_cmn_end_txn,
};
- this_id = atomic_fetch_inc(&id);
- if (this_id == 0) {
- name = "arm_cmn";
- } else {
- name = devm_kasprintf(cmn->dev, GFP_KERNEL, "arm_cmn_%d", this_id);
- if (!name)
- return -ENOMEM;
- }
+ name = devm_kasprintf(cmn->dev, GFP_KERNEL, "arm_cmn_%d", atomic_fetch_inc(&id));
+ if (!name)
+ return -ENOMEM;
err = cpuhp_state_add_instance(arm_cmn_hp_state, &cmn->cpuhp_node);
if (err)