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thermal/x86_pkg_temp_thermal: Cosmetic: Rename internal variables to zones from packages 

Syntax update only -- no logical or functional change.

In response to the new multi-die/package changes, update variable names to
use the more generic thermal "zone" terminology, instead of "package", as
the zones can refer to either packages or die.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Link: https://lkml.kernel.org/r/b65494a76be13481dc3a809c75debb2574c34eda.1557769318.git.len.brown@intel.com
This commit is contained in:
Len Brown 2019-05-13 13:59:00 -04:00 committed by Thomas Gleixner
parent cb63ba0f67
commit b2ce1c883d
1 changed files with 72 additions and 70 deletions
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142
drivers/thermal/intel/x86_pkg_temp_thermal.c
View File

@ -55,7 +55,7 @@ MODULE_PARM_DESC(notify_delay_ms,
*/
#define MAX_NUMBER_OF_TRIPS 2
struct pkg_device {
struct zone_device {
int cpu;
bool work_scheduled;
u32 tj_max;
@ -70,10 +70,10 @@ static struct thermal_zone_params pkg_temp_tz_params = {
.no_hwmon = true,
};
/* Keep track of how many package pointers we allocated in init() */
static int max_packages __read_mostly;
/* Array of package pointers */
static struct pkg_device **packages;
/* Keep track of how many zone pointers we allocated in init() */
static int max_id __read_mostly;
/* Array of zone pointers */
static struct zone_device **zones;
/* Serializes interrupt notification, work and hotplug */
static DEFINE_SPINLOCK(pkg_temp_lock);
/* Protects zone operation in the work function against hotplug removal */
@ -120,12 +120,12 @@ err_out:
*
* - Other callsites: Must hold pkg_temp_lock
*/
static struct pkg_device *pkg_temp_thermal_get_dev(unsigned int cpu)
static struct zone_device *pkg_temp_thermal_get_dev(unsigned int cpu)
{
int pkgid = topology_logical_die_id(cpu);
int id = topology_logical_die_id(cpu);
if (pkgid >= 0 && pkgid < max_packages)
return packages[pkgid];
if (id >= 0 && id < max_id)
return zones[id];
return NULL;
}
@ -150,12 +150,13 @@ static int get_tj_max(int cpu, u32 *tj_max)
static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp)
{
struct pkg_device *pkgdev = tzd->devdata;
struct zone_device *zonedev = tzd->devdata;
u32 eax, edx;
rdmsr_on_cpu(pkgdev->cpu, MSR_IA32_PACKAGE_THERM_STATUS, &eax, &edx);
rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_STATUS,
&eax, &edx);
if (eax & 0x80000000) {
*temp = pkgdev->tj_max - ((eax >> 16) & 0x7f) * 1000;
*temp = zonedev->tj_max - ((eax >> 16) & 0x7f) * 1000;
pr_debug("sys_get_curr_temp %d\n", *temp);
return 0;
}
@ -165,7 +166,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp)
static int sys_get_trip_temp(struct thermal_zone_device *tzd,
int trip, int *temp)
{
struct pkg_device *pkgdev = tzd->devdata;
struct zone_device *zonedev = tzd->devdata;
unsigned long thres_reg_value;
u32 mask, shift, eax, edx;
int ret;
@ -181,14 +182,14 @@ static int sys_get_trip_temp(struct thermal_zone_device *tzd,
shift = THERM_SHIFT_THRESHOLD0;
}
ret = rdmsr_on_cpu(pkgdev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
ret = rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
&eax, &edx);
if (ret < 0)
return ret;
thres_reg_value = (eax & mask) >> shift;
if (thres_reg_value)
*temp = pkgdev->tj_max - thres_reg_value * 1000;
*temp = zonedev->tj_max - thres_reg_value * 1000;
else
*temp = 0;
pr_debug("sys_get_trip_temp %d\n", *temp);
@ -199,14 +200,14 @@ static int sys_get_trip_temp(struct thermal_zone_device *tzd,
static int
sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp)
{
struct pkg_device *pkgdev = tzd->devdata;
struct zone_device *zonedev = tzd->devdata;
u32 l, h, mask, shift, intr;
int ret;
if (trip >= MAX_NUMBER_OF_TRIPS || temp >= pkgdev->tj_max)
if (trip >= MAX_NUMBER_OF_TRIPS || temp >= zonedev->tj_max)
return -EINVAL;
ret = rdmsr_on_cpu(pkgdev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
ret = rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
&l, &h);
if (ret < 0)
return ret;
@ -228,11 +229,12 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp)
if (!temp) {
l &= ~intr;
} else {
l |= (pkgdev->tj_max - temp)/1000 << shift;
l |= (zonedev->tj_max - temp)/1000 << shift;
l |= intr;
}
return wrmsr_on_cpu(pkgdev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT, l, h);
return wrmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
l, h);
}
static int sys_get_trip_type(struct thermal_zone_device *thermal, int trip,
@ -287,26 +289,26 @@ static void pkg_temp_thermal_threshold_work_fn(struct work_struct *work)
{
struct thermal_zone_device *tzone = NULL;
int cpu = smp_processor_id();
struct pkg_device *pkgdev;
struct zone_device *zonedev;
u64 msr_val, wr_val;
mutex_lock(&thermal_zone_mutex);
spin_lock_irq(&pkg_temp_lock);
++pkg_work_cnt;
pkgdev = pkg_temp_thermal_get_dev(cpu);
if (!pkgdev) {
zonedev = pkg_temp_thermal_get_dev(cpu);
if (!zonedev) {
spin_unlock_irq(&pkg_temp_lock);
mutex_unlock(&thermal_zone_mutex);
return;
}
pkgdev->work_scheduled = false;
zonedev->work_scheduled = false;
rdmsrl(MSR_IA32_PACKAGE_THERM_STATUS, msr_val);
wr_val = msr_val & ~(THERM_LOG_THRESHOLD0 | THERM_LOG_THRESHOLD1);
if (wr_val != msr_val) {
wrmsrl(MSR_IA32_PACKAGE_THERM_STATUS, wr_val);
tzone = pkgdev->tzone;
tzone = zonedev->tzone;
}
enable_pkg_thres_interrupt();
@ -332,7 +334,7 @@ static void pkg_thermal_schedule_work(int cpu, struct delayed_work *work)
static int pkg_thermal_notify(u64 msr_val)
{
int cpu = smp_processor_id();
struct pkg_device *pkgdev;
struct zone_device *zonedev;
unsigned long flags;
spin_lock_irqsave(&pkg_temp_lock, flags);
@ -341,10 +343,10 @@ static int pkg_thermal_notify(u64 msr_val)
disable_pkg_thres_interrupt();
/* Work is per package, so scheduling it once is enough. */
pkgdev = pkg_temp_thermal_get_dev(cpu);
if (pkgdev && !pkgdev->work_scheduled) {
pkgdev->work_scheduled = true;
pkg_thermal_schedule_work(pkgdev->cpu, &pkgdev->work);
zonedev = pkg_temp_thermal_get_dev(cpu);
if (zonedev && !zonedev->work_scheduled) {
zonedev->work_scheduled = true;
pkg_thermal_schedule_work(zonedev->cpu, &zonedev->work);
}
spin_unlock_irqrestore(&pkg_temp_lock, flags);
@ -353,12 +355,12 @@ static int pkg_thermal_notify(u64 msr_val)
static int pkg_temp_thermal_device_add(unsigned int cpu)
{
int pkgid = topology_logical_die_id(cpu);
int id = topology_logical_die_id(cpu);
u32 tj_max, eax, ebx, ecx, edx;
struct pkg_device *pkgdev;
struct zone_device *zonedev;
int thres_count, err;
if (pkgid >= max_packages)
if (id >= max_id)
return -ENOMEM;
cpuid(6, &eax, &ebx, &ecx, &edx);
@ -372,51 +374,51 @@ static int pkg_temp_thermal_device_add(unsigned int cpu)
if (err)
return err;
pkgdev = kzalloc(sizeof(*pkgdev), GFP_KERNEL);
if (!pkgdev)
zonedev = kzalloc(sizeof(*zonedev), GFP_KERNEL);
if (!zonedev)
return -ENOMEM;
INIT_DELAYED_WORK(&pkgdev->work, pkg_temp_thermal_threshold_work_fn);
pkgdev->cpu = cpu;
pkgdev->tj_max = tj_max;
pkgdev->tzone = thermal_zone_device_register("x86_pkg_temp",
INIT_DELAYED_WORK(&zonedev->work, pkg_temp_thermal_threshold_work_fn);
zonedev->cpu = cpu;
zonedev->tj_max = tj_max;
zonedev->tzone = thermal_zone_device_register("x86_pkg_temp",
thres_count,
(thres_count == MAX_NUMBER_OF_TRIPS) ? 0x03 : 0x01,
pkgdev, &tzone_ops, &pkg_temp_tz_params, 0, 0);
if (IS_ERR(pkgdev->tzone)) {
err = PTR_ERR(pkgdev->tzone);
kfree(pkgdev);
zonedev, &tzone_ops, &pkg_temp_tz_params, 0, 0);
if (IS_ERR(zonedev->tzone)) {
err = PTR_ERR(zonedev->tzone);
kfree(zonedev);
return err;
}
/* Store MSR value for package thermal interrupt, to restore at exit */
rdmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT, pkgdev->msr_pkg_therm_low,
pkgdev->msr_pkg_therm_high);
rdmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT, zonedev->msr_pkg_therm_low,
zonedev->msr_pkg_therm_high);
cpumask_set_cpu(cpu, &pkgdev->cpumask);
cpumask_set_cpu(cpu, &zonedev->cpumask);
spin_lock_irq(&pkg_temp_lock);
packages[pkgid] = pkgdev;
zones[id] = zonedev;
spin_unlock_irq(&pkg_temp_lock);
return 0;
}
static int pkg_thermal_cpu_offline(unsigned int cpu)
{
struct pkg_device *pkgdev = pkg_temp_thermal_get_dev(cpu);
struct zone_device *zonedev = pkg_temp_thermal_get_dev(cpu);
bool lastcpu, was_target;
int target;
if (!pkgdev)
if (!zonedev)
return 0;
target = cpumask_any_but(&pkgdev->cpumask, cpu);
cpumask_clear_cpu(cpu, &pkgdev->cpumask);
target = cpumask_any_but(&zonedev->cpumask, cpu);
cpumask_clear_cpu(cpu, &zonedev->cpumask);
lastcpu = target >= nr_cpu_ids;
/*
* Remove the sysfs files, if this is the last cpu in the package
* before doing further cleanups.
*/
if (lastcpu) {
struct thermal_zone_device *tzone = pkgdev->tzone;
struct thermal_zone_device *tzone = zonedev->tzone;
/*
* We must protect against a work function calling
@ -425,7 +427,7 @@ static int pkg_thermal_cpu_offline(unsigned int cpu)
* won't try to call.
*/
mutex_lock(&thermal_zone_mutex);
pkgdev->tzone = NULL;
zonedev->tzone = NULL;
mutex_unlock(&thermal_zone_mutex);
thermal_zone_device_unregister(tzone);
@ -439,8 +441,8 @@ static int pkg_thermal_cpu_offline(unsigned int cpu)
* one. When we drop the lock, then the interrupt notify function
* will see the new target.
*/
was_target = pkgdev->cpu == cpu;
pkgdev->cpu = target;
was_target = zonedev->cpu == cpu;
zonedev->cpu = target;
/*
* If this is the last CPU in the package remove the package
@ -449,23 +451,23 @@ static int pkg_thermal_cpu_offline(unsigned int cpu)
* worker will see the package anymore.
*/
if (lastcpu) {
packages[topology_logical_die_id(cpu)] = NULL;
zones[topology_logical_die_id(cpu)] = NULL;
/* After this point nothing touches the MSR anymore. */
wrmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT,
pkgdev->msr_pkg_therm_low, pkgdev->msr_pkg_therm_high);
zonedev->msr_pkg_therm_low, zonedev->msr_pkg_therm_high);
}
/*
* Check whether there is work scheduled and whether the work is
* targeted at the outgoing CPU.
*/
if (pkgdev->work_scheduled && was_target) {
if (zonedev->work_scheduled && was_target) {
/*
* To cancel the work we need to drop the lock, otherwise
* we might deadlock if the work needs to be flushed.
*/
spin_unlock_irq(&pkg_temp_lock);
cancel_delayed_work_sync(&pkgdev->work);
cancel_delayed_work_sync(&zonedev->work);
spin_lock_irq(&pkg_temp_lock);
/*
* If this is not the last cpu in the package and the work
@ -473,21 +475,21 @@ static int pkg_thermal_cpu_offline(unsigned int cpu)
* need to reschedule the work, otherwise the interrupt
* stays disabled forever.
*/
if (!lastcpu && pkgdev->work_scheduled)
pkg_thermal_schedule_work(target, &pkgdev->work);
if (!lastcpu && zonedev->work_scheduled)
pkg_thermal_schedule_work(target, &zonedev->work);
}
spin_unlock_irq(&pkg_temp_lock);
/* Final cleanup if this is the last cpu */
if (lastcpu)
kfree(pkgdev);
kfree(zonedev);
return 0;
}
static int pkg_thermal_cpu_online(unsigned int cpu)
{
struct pkg_device *pkgdev = pkg_temp_thermal_get_dev(cpu);
struct zone_device *zonedev = pkg_temp_thermal_get_dev(cpu);
struct cpuinfo_x86 *c = &cpu_data(cpu);
/* Paranoia check */
@ -495,8 +497,8 @@ static int pkg_thermal_cpu_online(unsigned int cpu)
return -ENODEV;
/* If the package exists, nothing to do */
if (pkgdev) {
cpumask_set_cpu(cpu, &pkgdev->cpumask);
if (zonedev) {
cpumask_set_cpu(cpu, &zonedev->cpumask);
return 0;
}
return pkg_temp_thermal_device_add(cpu);
@ -515,10 +517,10 @@ static int __init pkg_temp_thermal_init(void)
if (!x86_match_cpu(pkg_temp_thermal_ids))
return -ENODEV;
max_packages = topology_max_packages() * topology_max_die_per_package();
packages = kcalloc(max_packages, sizeof(struct pkg_device *),
max_id = topology_max_packages() * topology_max_die_per_package();
zones = kcalloc(max_id, sizeof(struct zone_device *),
GFP_KERNEL);
if (!packages)
if (!zones)
return -ENOMEM;
ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "thermal/x86_pkg:online",
@ -537,7 +539,7 @@ static int __init pkg_temp_thermal_init(void)
return 0;
err:
kfree(packages);
kfree(zones);
return ret;
}
module_init(pkg_temp_thermal_init)
@ -549,7 +551,7 @@ static void __exit pkg_temp_thermal_exit(void)
cpuhp_remove_state(pkg_thermal_hp_state);
debugfs_remove_recursive(debugfs);
kfree(packages);
kfree(zones);
}
module_exit(pkg_temp_thermal_exit)