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Diffstat (limited to 'drivers/thermal/intel_powerclamp.c')
-rw-r--r--drivers/thermal/intel_powerclamp.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c
index 8f181b3..67b608e 100644
--- a/drivers/thermal/intel_powerclamp.c
+++ b/drivers/thermal/intel_powerclamp.c
@@ -206,6 +206,15 @@ static void find_target_mwait(void)
}
+static bool has_pkg_state_counter(void)
+{
+ u64 tmp;
+ return !rdmsrl_safe(MSR_PKG_C2_RESIDENCY, &tmp) ||
+ !rdmsrl_safe(MSR_PKG_C3_RESIDENCY, &tmp) ||
+ !rdmsrl_safe(MSR_PKG_C6_RESIDENCY, &tmp) ||
+ !rdmsrl_safe(MSR_PKG_C7_RESIDENCY, &tmp);
+}
+
static u64 pkg_state_counter(void)
{
u64 val;
@@ -500,7 +509,7 @@ static int start_power_clamp(void)
struct task_struct *thread;
/* check if pkg cstate counter is completely 0, abort in this case */
- if (!pkg_state_counter()) {
+ if (!has_pkg_state_counter()) {
pr_err("pkg cstate counter not functional, abort\n");
return -EINVAL;
}
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