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path: root/drivers/powercap/intel_rapl.c
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Diffstat (limited to 'drivers/powercap/intel_rapl.c')
-rw-r--r--drivers/powercap/intel_rapl.c59
1 files changed, 29 insertions, 30 deletions
diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c
index adb35ec9f939..e05d92d67525 100644
--- a/drivers/powercap/intel_rapl.c
+++ b/drivers/powercap/intel_rapl.c
@@ -75,6 +75,9 @@ enum unit_type {
TIME_UNIT,
};
+/* private data for RAPL MSR Interface */
+static struct rapl_if_priv rapl_msr_priv;
+
/* per domain data, some are optional */
#define NR_RAW_PRIMITIVES (NR_RAPL_PRIMITIVES - 2)
@@ -155,17 +158,14 @@ static const char * const rapl_domain_names[] = {
"psys",
};
-static struct powercap_control_type *control_type; /* PowerCap Controller */
-static struct rapl_domain *platform_rapl_domain; /* Platform (PSys) domain */
-
/* caller to ensure CPU hotplug lock is held */
-static struct rapl_package *rapl_find_package_domain(int cpu)
+static struct rapl_package *rapl_find_package_domain(int cpu, struct rapl_if_priv *priv)
{
int id = topology_logical_die_id(cpu);
struct rapl_package *rp;
list_for_each_entry(rp, &rapl_packages, plist) {
- if (rp->id == id)
+ if (rp->id == id && rp->priv->control_type == priv->control_type)
return rp;
}
@@ -1090,12 +1090,12 @@ static void rapl_update_domain_data(struct rapl_package *rp)
static void rapl_unregister_powercap(void)
{
- if (platform_rapl_domain) {
- powercap_unregister_zone(control_type,
- &platform_rapl_domain->power_zone);
- kfree(platform_rapl_domain);
+ if (&rapl_msr_priv.platform_rapl_domain) {
+ powercap_unregister_zone(rapl_msr_priv.control_type,
+ &rapl_msr_priv.platform_rapl_domain->power_zone);
+ kfree(rapl_msr_priv.platform_rapl_domain);
}
- powercap_unregister_control_type(control_type);
+ powercap_unregister_control_type(rapl_msr_priv.control_type);
}
static int rapl_package_register_powercap(struct rapl_package *rp)
@@ -1113,7 +1113,7 @@ static int rapl_package_register_powercap(struct rapl_package *rp)
nr_pl = find_nr_power_limit(rd);
pr_debug("register package domain %s\n", rp->name);
power_zone = powercap_register_zone(&rd->power_zone,
- control_type,
+ rp->priv->control_type,
rp->name, NULL,
&zone_ops[rd->id],
nr_pl,
@@ -1140,7 +1140,7 @@ static int rapl_package_register_powercap(struct rapl_package *rp)
/* number of power limits per domain varies */
nr_pl = find_nr_power_limit(rd);
power_zone = powercap_register_zone(&rd->power_zone,
- control_type, rd->name,
+ rp->priv->control_type, rd->name,
rp->power_zone,
&zone_ops[rd->id], nr_pl,
&constraint_ops);
@@ -1161,7 +1161,7 @@ err_cleanup:
*/
while (--rd >= rp->domains) {
pr_debug("unregister %s domain %s\n", rp->name, rd->name);
- powercap_unregister_zone(control_type, &rd->power_zone);
+ powercap_unregister_zone(rp->priv->control_type, &rd->power_zone);
}
return ret;
@@ -1191,9 +1191,9 @@ static int __init rapl_register_psys(void)
rd->rpl[0].name = pl1_name;
rd->rpl[1].prim_id = PL2_ENABLE;
rd->rpl[1].name = pl2_name;
- rd->rp = rapl_find_package_domain(0);
+ rd->rp = rapl_find_package_domain(0, &rapl_msr_priv);
- power_zone = powercap_register_zone(&rd->power_zone, control_type,
+ power_zone = powercap_register_zone(&rd->power_zone, rapl_msr_priv.control_type,
"psys", NULL,
&zone_ops[RAPL_DOMAIN_PLATFORM],
2, &constraint_ops);
@@ -1203,17 +1203,17 @@ static int __init rapl_register_psys(void)
return PTR_ERR(power_zone);
}
- platform_rapl_domain = rd;
+ rapl_msr_priv.platform_rapl_domain = rd;
return 0;
}
static int __init rapl_register_powercap(void)
{
- control_type = powercap_register_control_type(NULL, "intel-rapl", NULL);
- if (IS_ERR(control_type)) {
+ rapl_msr_priv.control_type = powercap_register_control_type(NULL, "intel-rapl", NULL);
+ if (IS_ERR(rapl_msr_priv.control_type)) {
pr_debug("failed to register powercap control_type.\n");
- return PTR_ERR(control_type);
+ return PTR_ERR(rapl_msr_priv.control_type);
}
return 0;
}
@@ -1338,16 +1338,16 @@ static void rapl_remove_package(struct rapl_package *rp)
}
pr_debug("remove package, undo power limit on %s: %s\n",
rp->name, rd->name);
- powercap_unregister_zone(control_type, &rd->power_zone);
+ powercap_unregister_zone(rp->priv->control_type, &rd->power_zone);
}
/* do parent zone last */
- powercap_unregister_zone(control_type, &rd_package->power_zone);
+ powercap_unregister_zone(rp->priv->control_type, &rd_package->power_zone);
list_del(&rp->plist);
kfree(rp);
}
/* called from CPU hotplug notifier, hotplug lock held */
-static struct rapl_package *rapl_add_package(int cpu)
+static struct rapl_package *rapl_add_package(int cpu, struct rapl_if_priv *priv)
{
int id = topology_logical_die_id(cpu);
struct rapl_package *rp;
@@ -1361,6 +1361,7 @@ static struct rapl_package *rapl_add_package(int cpu)
/* add the new package to the list */
rp->id = id;
rp->lead_cpu = cpu;
+ rp->priv = priv;
if (topology_max_die_per_package() > 1)
snprintf(rp->name, PACKAGE_DOMAIN_NAME_LENGTH,
@@ -1399,9 +1400,9 @@ static int rapl_cpu_online(unsigned int cpu)
{
struct rapl_package *rp;
- rp = rapl_find_package_domain(cpu);
+ rp = rapl_find_package_domain(cpu, &rapl_msr_priv);
if (!rp) {
- rp = rapl_add_package(cpu);
+ rp = rapl_add_package(cpu, &rapl_msr_priv);
if (IS_ERR(rp))
return PTR_ERR(rp);
}
@@ -1414,7 +1415,7 @@ static int rapl_cpu_down_prep(unsigned int cpu)
struct rapl_package *rp;
int lead_cpu;
- rp = rapl_find_package_domain(cpu);
+ rp = rapl_find_package_domain(cpu, &rapl_msr_priv);
if (!rp)
return 0;
@@ -1427,8 +1428,6 @@ static int rapl_cpu_down_prep(unsigned int cpu)
return 0;
}
-static enum cpuhp_state pcap_rapl_online;
-
static void power_limit_state_save(void)
{
struct rapl_package *rp;
@@ -1538,7 +1537,7 @@ static int __init rapl_init(void)
rapl_cpu_online, rapl_cpu_down_prep);
if (ret < 0)
goto err_unreg;
- pcap_rapl_online = ret;
+ rapl_msr_priv.pcap_rapl_online = ret;
/* Don't bail out if PSys is not supported */
rapl_register_psys();
@@ -1550,7 +1549,7 @@ static int __init rapl_init(void)
return 0;
err_unreg_all:
- cpuhp_remove_state(pcap_rapl_online);
+ cpuhp_remove_state(rapl_msr_priv.pcap_rapl_online);
err_unreg:
rapl_unregister_powercap();
@@ -1560,7 +1559,7 @@ err_unreg:
static void __exit rapl_exit(void)
{
unregister_pm_notifier(&rapl_pm_notifier);
- cpuhp_remove_state(pcap_rapl_online);
+ cpuhp_remove_state(rapl_msr_priv.pcap_rapl_online);
rapl_unregister_powercap();
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-18 00:41:57 +0300