diff options
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 69 |
1 files changed, 15 insertions, 54 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 457694a2d0e8..6ff73c30769f 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -27,6 +27,7 @@ #include <linux/pm_qos.h> #include <trace/events/power.h> +#include <asm/cpu.h> #include <asm/div64.h> #include <asm/msr.h> #include <asm/cpu_device_id.h> @@ -398,16 +399,6 @@ static int intel_pstate_get_cppc_guaranteed(int cpu) return cppc_perf.nominal_perf; } - -static u32 intel_pstate_cppc_nominal(int cpu) -{ - u64 nominal_perf; - - if (cppc_get_nominal_perf(cpu, &nominal_perf)) - return 0; - - return nominal_perf; -} #else /* CONFIG_ACPI_CPPC_LIB */ static inline void intel_pstate_set_itmt_prio(int cpu) { @@ -532,34 +523,17 @@ static void intel_pstate_hybrid_hwp_adjust(struct cpudata *cpu) int perf_ctl_max_phys = cpu->pstate.max_pstate_physical; int perf_ctl_scaling = cpu->pstate.perf_ctl_scaling; int perf_ctl_turbo = pstate_funcs.get_turbo(cpu->cpu); - int turbo_freq = perf_ctl_turbo * perf_ctl_scaling; int scaling = cpu->pstate.scaling; pr_debug("CPU%d: perf_ctl_max_phys = %d\n", cpu->cpu, perf_ctl_max_phys); - pr_debug("CPU%d: perf_ctl_max = %d\n", cpu->cpu, pstate_funcs.get_max(cpu->cpu)); pr_debug("CPU%d: perf_ctl_turbo = %d\n", cpu->cpu, perf_ctl_turbo); pr_debug("CPU%d: perf_ctl_scaling = %d\n", cpu->cpu, perf_ctl_scaling); pr_debug("CPU%d: HWP_CAP guaranteed = %d\n", cpu->cpu, cpu->pstate.max_pstate); pr_debug("CPU%d: HWP_CAP highest = %d\n", cpu->cpu, cpu->pstate.turbo_pstate); pr_debug("CPU%d: HWP-to-frequency scaling factor: %d\n", cpu->cpu, scaling); - /* - * If the product of the HWP performance scaling factor and the HWP_CAP - * highest performance is greater than the maximum turbo frequency - * corresponding to the pstate_funcs.get_turbo() return value, the - * scaling factor is too high, so recompute it to make the HWP_CAP - * highest performance correspond to the maximum turbo frequency. - */ - cpu->pstate.turbo_freq = cpu->pstate.turbo_pstate * scaling; - if (turbo_freq < cpu->pstate.turbo_freq) { - cpu->pstate.turbo_freq = turbo_freq; - scaling = DIV_ROUND_UP(turbo_freq, cpu->pstate.turbo_pstate); - cpu->pstate.scaling = scaling; - - pr_debug("CPU%d: refined HWP-to-frequency scaling factor: %d\n", - cpu->cpu, scaling); - } - + cpu->pstate.turbo_freq = rounddown(cpu->pstate.turbo_pstate * scaling, + perf_ctl_scaling); cpu->pstate.max_freq = rounddown(cpu->pstate.max_pstate * scaling, perf_ctl_scaling); @@ -1965,37 +1939,24 @@ static int knl_get_turbo_pstate(int cpu) return ret; } -#ifdef CONFIG_ACPI_CPPC_LIB -static u32 hybrid_ref_perf; - -static int hybrid_get_cpu_scaling(int cpu) +static void hybrid_get_type(void *data) { - return DIV_ROUND_UP(core_get_scaling() * hybrid_ref_perf, - intel_pstate_cppc_nominal(cpu)); + u8 *cpu_type = data; + + *cpu_type = get_this_hybrid_cpu_type(); } -static void intel_pstate_cppc_set_cpu_scaling(void) +static int hybrid_get_cpu_scaling(int cpu) { - u32 min_nominal_perf = U32_MAX; - int cpu; + u8 cpu_type = 0; - for_each_present_cpu(cpu) { - u32 nominal_perf = intel_pstate_cppc_nominal(cpu); + smp_call_function_single(cpu, hybrid_get_type, &cpu_type, 1); + /* P-cores have a smaller perf level-to-freqency scaling factor. */ + if (cpu_type == 0x40) + return 78741; - if (nominal_perf && nominal_perf < min_nominal_perf) - min_nominal_perf = nominal_perf; - } - - if (min_nominal_perf < U32_MAX) { - hybrid_ref_perf = min_nominal_perf; - pstate_funcs.get_cpu_scaling = hybrid_get_cpu_scaling; - } + return core_get_scaling(); } -#else -static inline void intel_pstate_cppc_set_cpu_scaling(void) -{ -} -#endif /* CONFIG_ACPI_CPPC_LIB */ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate) { @@ -3450,7 +3411,7 @@ static int __init intel_pstate_init(void) default_driver = &intel_pstate; if (boot_cpu_has(X86_FEATURE_HYBRID_CPU)) - intel_pstate_cppc_set_cpu_scaling(); + pstate_funcs.get_cpu_scaling = hybrid_get_cpu_scaling; goto hwp_cpu_matched; } |