diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/thermal/intel_powerclamp.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c index 8f181b3f842..67b608ef2cb 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; } |