@@ -437,6 +437,8 @@ static inline bool amd_pstate_sample(struct amd_cpudata *cpudata)
static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
u32 des_perf, u32 max_perf, bool fast_switch, int gov_flags)
{
+ unsigned long max_freq;
+ struct cpufreq_policy *policy = cpufreq_cpu_get(cpudata->cpu);
u64 prev = READ_ONCE(cpudata->cppc_req_cached);
u64 value = prev;
@@ -446,6 +448,9 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
cpudata->max_limit_perf);
des_perf = clamp_t(unsigned long, des_perf, min_perf, max_perf);
+ max_freq = READ_ONCE(cpudata->max_limit_freq);
+ policy->cur = div_u64(des_perf * max_freq, max_perf);
+
if ((cppc_state == AMD_PSTATE_GUIDED) && (gov_flags & CPUFREQ_GOV_DYNAMIC_SWITCHING)) {
min_perf = des_perf;
des_perf = 0;
@@ -560,10 +565,9 @@ static void amd_pstate_adjust_perf(unsigned int cpu,
unsigned long capacity)
{
unsigned long max_perf, min_perf, des_perf,
- cap_perf, lowest_nonlinear_perf, max_freq;
+ cap_perf, lowest_nonlinear_perf;
struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
struct amd_cpudata *cpudata = policy->driver_data;
- unsigned int target_freq;
if (policy->min != cpudata->min_limit_freq || policy->max != cpudata->max_limit_freq)
amd_pstate_update_min_max_limit(policy);
@@ -571,7 +575,6 @@ static void amd_pstate_adjust_perf(unsigned int cpu,
cap_perf = READ_ONCE(cpudata->highest_perf);
lowest_nonlinear_perf = READ_ONCE(cpudata->lowest_nonlinear_perf);
- max_freq = READ_ONCE(cpudata->max_freq);
des_perf = cap_perf;
if (target_perf < capacity)
@@ -589,8 +592,6 @@ static void amd_pstate_adjust_perf(unsigned int cpu,
max_perf = min_perf;
des_perf = clamp_t(unsigned long, des_perf, min_perf, max_perf);
- target_freq = div_u64(des_perf * max_freq, max_perf);
- policy->cur = target_freq;
amd_pstate_update(cpudata, min_perf, des_perf, max_perf, true,
policy->governor->flags);
@@ -1449,6 +1450,12 @@ static int amd_pstate_epp_set_policy(struct cpufreq_policy *policy)
amd_pstate_epp_update_limit(policy);
+ /*
+ * policy->cur is never updated with the amd_pstate_epp driver, but it
+ * is used as a stale frequency value. So, keep it within limits.
+ */
+ policy->cur = policy->min;
+
return 0;
}
When scaling min/max freq values were being setted, the value of policy->cur need to update. Signed-off-by: Meng Li <li.meng@amd.com> --- drivers/cpufreq/amd-pstate.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-)