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Thermal control fixes for 6.3-rc5

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- Drop two lockdep assertions producing false positive warnings from
    the sysfs-related thermal core code (Rafael Wysocki).
 
  - Fix handling of two recently added module parameters in the Intel
    powerclamp thermal driver (David Arcari).
 
  - Fix one more deadlock in the int340x thermal driver (Srinivas
    Pandruvada).
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Merge tag 'thermal-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control fixes from Rafael Wysocki:
 "These remove two recently added excessive lockdep assertions from the
  sysfs-related thermal code and fix two issues in Intel thermal
  drivers.

  Specifics:

   - Drop two lockdep assertions producing false positive warnings from
     the sysfs-related thermal core code (Rafael Wysocki)

   - Fix handling of two recently added module parameters in the Intel
     powerclamp thermal driver (David Arcari)

   - Fix one more deadlock in the int340x thermal driver (Srinivas
     Pandruvada)"

* tag 'thermal-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: intel: powerclamp: Fix cpumask and max_idle module parameters
  thermal: intel: int340x: processor_thermal: Fix additional deadlock
  thermal: core: Drop excessive lockdep_assert_held() calls
This commit is contained in:
Linus Torvalds 2023-03-31 10:23:27 -07:00
commit 2bac7dc169
3 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
View File

@ -153,7 +153,6 @@ static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp
cancel_delayed_work_sync(&pci_info->work);
proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_INT_ENABLE_0, 0);
proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_THRES_0, 0);
thermal_zone_device_disable(tzd);
pci_info->stored_thres = 0;
return 0;
}

9
drivers/thermal/intel/intel_powerclamp.c
View File

@ -235,6 +235,12 @@ static int max_idle_set(const char *arg, const struct kernel_param *kp)
goto skip_limit_set;
}
if (!cpumask_available(idle_injection_cpu_mask)) {
ret = allocate_copy_idle_injection_mask(cpu_present_mask);
if (ret)
goto skip_limit_set;
}
if (check_invalid(idle_injection_cpu_mask, new_max_idle)) {
ret = -EINVAL;
goto skip_limit_set;
@ -791,7 +797,8 @@ static int __init powerclamp_init(void)
return retval;
mutex_lock(&powerclamp_lock);
retval = allocate_copy_idle_injection_mask(cpu_present_mask);
if (!cpumask_available(idle_injection_cpu_mask))
retval = allocate_copy_idle_injection_mask(cpu_present_mask);
mutex_unlock(&powerclamp_lock);
if (retval)

6
drivers/thermal/thermal_sysfs.c
View File

@ -876,8 +876,6 @@ static void cooling_device_stats_setup(struct thermal_cooling_device *cdev)
unsigned long states = cdev->max_state + 1;
int var;
lockdep_assert_held(&cdev->lock);
var = sizeof(*stats);
var += sizeof(*stats->time_in_state) * states;
var += sizeof(*stats->trans_table) * states * states;
@ -903,8 +901,6 @@ static void cooling_device_stats_setup(struct thermal_cooling_device *cdev)
static void cooling_device_stats_destroy(struct thermal_cooling_device *cdev)
{
lockdep_assert_held(&cdev->lock);
kfree(cdev->stats);
cdev->stats = NULL;
}
@ -931,6 +927,8 @@ void thermal_cooling_device_destroy_sysfs(struct thermal_cooling_device *cdev)
void thermal_cooling_device_stats_reinit(struct thermal_cooling_device *cdev)
{
lockdep_assert_held(&cdev->lock);
cooling_device_stats_destroy(cdev);
cooling_device_stats_setup(cdev);
}