diff options
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index db4fbd8d1e06..80eaa58f1405 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -514,6 +514,7 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf, unsigned long max_freq; struct cpufreq_policy *policy = cpufreq_cpu_get(cpudata->cpu); u64 prev = READ_ONCE(cpudata->cppc_req_cached); + u32 nominal_perf = READ_ONCE(cpudata->nominal_perf); u64 value = prev; min_perf = clamp_t(unsigned long, min_perf, cpudata->min_limit_perf, @@ -536,6 +537,10 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf, value &= ~AMD_CPPC_DES_PERF(~0L); value |= AMD_CPPC_DES_PERF(des_perf); + /* limit the max perf when core performance boost feature is disabled */ + if (!cpudata->boost_supported) + max_perf = min_t(unsigned long, nominal_perf, max_perf); + value &= ~AMD_CPPC_MAX_PERF(~0L); value |= AMD_CPPC_MAX_PERF(max_perf); |