Commit ae817e61 authored by David Arcari's avatar David Arcari Committed by Rafael J. Wysocki

thermal: intel: powerclamp: Fix cpumask and max_idle module parameters

When cpumask is specified as a module parameter the value is
overwritten by the module init routine.  This can easily be fixed
by checking to see if the mask has already been allocated in the
init routine.

When max_idle is specified as a module parameter a panic will occur.
The problem is that the idle_injection_cpu_mask is not allocated until
the module init routine executes. This can easily be fixed by allocating
the cpumask if it's not already allocated.

Fixes: ebf51971 ("thermal: intel: powerclamp: Add two module parameters")
Signed-off-by: default avatarDavid Arcari <darcari@redhat.com>
Reviewed-by: Srinivas Pandruvada<srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent a57cc2db
......@@ -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;
......@@ -791,6 +797,7 @@ static int __init powerclamp_init(void)
return retval;
mutex_lock(&powerclamp_lock);
if (!cpumask_available(idle_injection_cpu_mask))
retval = allocate_copy_idle_injection_mask(cpu_present_mask);
mutex_unlock(&powerclamp_lock);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment