diff options
author | Takashi Iwai <tiwai@suse.de> | 2017-05-02 08:25:25 +0200 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2017-05-02 08:25:25 +0200 |
commit | a5c3b32a1146e44f6b38fdfdfffc27842953420c (patch) | |
tree | eca93f51c8deabe77ed079a3e9190717b6380009 /drivers/cpufreq/intel_pstate.c | |
parent | d7dc450d5a7162de96edbed6b1792240c2f3a55f (diff) | |
parent | 20d5c84bef067b7e804a163e2abca16c47125bad (diff) |
Merge tag 'asoc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.12
A quiet release for the core, but lots of new drivers this time around:
- A new, generalized, API for hooking up jacks which makes it easier to
write generic machine drivers for simple cases.
- Continuing fixes for issues with the x86 CPU drivers.
- New drivers for Cirrus CS35L35, DIO DIO2125, Everest ES7132,
HiSilicon hi6210, Maxim MAX98927, MT2701 systems with WM8960, Nuvoton
NAU8824, Odroid systems, ST STM32 SAI controllers and x86 systems with
DA7213
Diffstat (limited to 'drivers/cpufreq/intel_pstate.c')
-rw-r--r-- | drivers/cpufreq/intel_pstate.c | 167 |
1 files changed, 50 insertions, 117 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 08e134ffba68..283491f742d3 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -364,9 +364,7 @@ static bool driver_registered __read_mostly; static bool acpi_ppc; #endif -static struct perf_limits performance_limits; -static struct perf_limits powersave_limits; -static struct perf_limits *limits; +static struct perf_limits global; static void intel_pstate_init_limits(struct perf_limits *limits) { @@ -377,14 +375,6 @@ static void intel_pstate_init_limits(struct perf_limits *limits) limits->max_sysfs_pct = 100; } -static void intel_pstate_set_performance_limits(struct perf_limits *limits) -{ - intel_pstate_init_limits(limits); - limits->min_perf_pct = 100; - limits->min_perf = int_ext_tofp(1); - limits->min_sysfs_pct = 100; -} - static DEFINE_MUTEX(intel_pstate_driver_lock); static DEFINE_MUTEX(intel_pstate_limits_lock); @@ -507,7 +497,7 @@ static void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy) * correct max turbo frequency based on the turbo state. * Also need to convert to MHz as _PSS freq is in MHz. */ - if (!limits->turbo_disabled) + if (!global.turbo_disabled) cpu->acpi_perf_data.states[0].core_frequency = policy->cpuinfo.max_freq / 1000; cpu->valid_pss_table = true; @@ -626,7 +616,7 @@ static inline void update_turbo_state(void) cpu = all_cpu_data[0]; rdmsrl(MSR_IA32_MISC_ENABLE, misc_en); - limits->turbo_disabled = + global.turbo_disabled = (misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE || cpu->pstate.max_pstate == cpu->pstate.turbo_pstate); } @@ -851,7 +841,7 @@ static struct freq_attr *hwp_cpufreq_attrs[] = { static void intel_pstate_hwp_set(struct cpufreq_policy *policy) { int min, hw_min, max, hw_max, cpu; - struct perf_limits *perf_limits = limits; + struct perf_limits *perf_limits = &global; u64 value, cap; for_each_cpu(cpu, policy->cpus) { @@ -863,19 +853,22 @@ static void intel_pstate_hwp_set(struct cpufreq_policy *policy) rdmsrl_on_cpu(cpu, MSR_HWP_CAPABILITIES, &cap); hw_min = HWP_LOWEST_PERF(cap); - if (limits->no_turbo) + if (global.no_turbo) hw_max = HWP_GUARANTEED_PERF(cap); else hw_max = HWP_HIGHEST_PERF(cap); - min = fp_ext_toint(hw_max * perf_limits->min_perf); + max = fp_ext_toint(hw_max * perf_limits->max_perf); + if (cpu_data->policy == CPUFREQ_POLICY_PERFORMANCE) + min = max; + else + min = fp_ext_toint(hw_max * perf_limits->min_perf); rdmsrl_on_cpu(cpu, MSR_HWP_REQUEST, &value); value &= ~HWP_MIN_PERF(~0L); value |= HWP_MIN_PERF(min); - max = fp_ext_toint(hw_max * perf_limits->max_perf); value &= ~HWP_MAX_PERF(~0L); value |= HWP_MAX_PERF(max); @@ -968,20 +961,11 @@ static int intel_pstate_resume(struct cpufreq_policy *policy) } static void intel_pstate_update_policies(void) - __releases(&intel_pstate_limits_lock) - __acquires(&intel_pstate_limits_lock) { - struct perf_limits *saved_limits = limits; int cpu; - mutex_unlock(&intel_pstate_limits_lock); - for_each_possible_cpu(cpu) cpufreq_update_policy(cpu); - - mutex_lock(&intel_pstate_limits_lock); - - limits = saved_limits; } /************************** debugfs begin ************************/ @@ -1060,7 +1044,7 @@ static void intel_pstate_debug_hide_params(void) static ssize_t show_##file_name \ (struct kobject *kobj, struct attribute *attr, char *buf) \ { \ - return sprintf(buf, "%u\n", limits->object); \ + return sprintf(buf, "%u\n", global.object); \ } static ssize_t intel_pstate_show_status(char *buf); @@ -1151,10 +1135,10 @@ static ssize_t show_no_turbo(struct kobject *kobj, } update_turbo_state(); - if (limits->turbo_disabled) - ret = sprintf(buf, "%u\n", limits->turbo_disabled); + if (global.turbo_disabled) + ret = sprintf(buf, "%u\n", global.turbo_disabled); else - ret = sprintf(buf, "%u\n", limits->no_turbo); + ret = sprintf(buf, "%u\n", global.no_turbo); mutex_unlock(&intel_pstate_driver_lock); @@ -1181,19 +1165,19 @@ static ssize_t store_no_turbo(struct kobject *a, struct attribute *b, mutex_lock(&intel_pstate_limits_lock); update_turbo_state(); - if (limits->turbo_disabled) { + if (global.turbo_disabled) { pr_warn("Turbo disabled by BIOS or unavailable on processor\n"); mutex_unlock(&intel_pstate_limits_lock); mutex_unlock(&intel_pstate_driver_lock); return -EPERM; } - limits->no_turbo = clamp_t(int, input, 0, 1); - - intel_pstate_update_policies(); + global.no_turbo = clamp_t(int, input, 0, 1); mutex_unlock(&intel_pstate_limits_lock); + intel_pstate_update_policies(); + mutex_unlock(&intel_pstate_driver_lock); return count; @@ -1218,19 +1202,16 @@ static ssize_t store_max_perf_pct(struct kobject *a, struct attribute *b, mutex_lock(&intel_pstate_limits_lock); - limits->max_sysfs_pct = clamp_t(int, input, 0 , 100); - limits->max_perf_pct = min(limits->max_policy_pct, - limits->max_sysfs_pct); - limits->max_perf_pct = max(limits->min_policy_pct, - limits->max_perf_pct); - limits->max_perf_pct = max(limits->min_perf_pct, - limits->max_perf_pct); - limits->max_perf = percent_ext_fp(limits->max_perf_pct); - - intel_pstate_update_policies(); + global.max_sysfs_pct = clamp_t(int, input, 0 , 100); + global.max_perf_pct = min(global.max_policy_pct, global.max_sysfs_pct); + global.max_perf_pct = max(global.min_policy_pct, global.max_perf_pct); + global.max_perf_pct = max(global.min_perf_pct, global.max_perf_pct); + global.max_perf = percent_ext_fp(global.max_perf_pct); mutex_unlock(&intel_pstate_limits_lock); + intel_pstate_update_policies(); + mutex_unlock(&intel_pstate_driver_lock); return count; @@ -1255,19 +1236,16 @@ static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b, mutex_lock(&intel_pstate_limits_lock); - limits->min_sysfs_pct = clamp_t(int, input, 0 , 100); - limits->min_perf_pct = max(limits->min_policy_pct, - limits->min_sysfs_pct); - limits->min_perf_pct = min(limits->max_policy_pct, - limits->min_perf_pct); - limits->min_perf_pct = min(limits->max_perf_pct, - limits->min_perf_pct); - limits->min_perf = percent_ext_fp(limits->min_perf_pct); - - intel_pstate_update_policies(); + global.min_sysfs_pct = clamp_t(int, input, 0 , 100); + global.min_perf_pct = max(global.min_policy_pct, global.min_sysfs_pct); + global.min_perf_pct = min(global.max_policy_pct, global.min_perf_pct); + global.min_perf_pct = min(global.max_perf_pct, global.min_perf_pct); + global.min_perf = percent_ext_fp(global.min_perf_pct); mutex_unlock(&intel_pstate_limits_lock); + intel_pstate_update_policies(); + mutex_unlock(&intel_pstate_driver_lock); return count; @@ -1387,7 +1365,7 @@ static u64 atom_get_val(struct cpudata *cpudata, int pstate) u32 vid; val = (u64)pstate << 8; - if (limits->no_turbo && !limits->turbo_disabled) + if (global.no_turbo && !global.turbo_disabled) val |= (u64)1 << 32; vid_fp = cpudata->vid.min + mul_fp( @@ -1557,7 +1535,7 @@ static u64 core_get_val(struct cpudata *cpudata, int pstate) u64 val; val = (u64)pstate << 8; - if (limits->no_turbo && !limits->turbo_disabled) + if (global.no_turbo && !global.turbo_disabled) val |= (u64)1 << 32; return val; @@ -1683,9 +1661,9 @@ static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max) int max_perf = cpu->pstate.turbo_pstate; int max_perf_adj; int min_perf; - struct perf_limits *perf_limits = limits; + struct perf_limits *perf_limits = &global; - if (limits->no_turbo || limits->turbo_disabled) + if (global.no_turbo || global.turbo_disabled) max_perf = cpu->pstate.max_pstate; if (per_cpu_limits) @@ -1820,7 +1798,7 @@ static inline int32_t get_target_pstate_use_cpu_load(struct cpudata *cpu) sample->busy_scaled = busy_frac * 100; - target = limits->no_turbo || limits->turbo_disabled ? + target = global.no_turbo || global.turbo_disabled ? cpu->pstate.max_pstate : cpu->pstate.turbo_pstate; target += target >> 2; target = mul_fp(target, busy_frac); @@ -2116,7 +2094,7 @@ static void intel_pstate_update_perf_limits(struct cpufreq_policy *policy, static int intel_pstate_set_policy(struct cpufreq_policy *policy) { struct cpudata *cpu; - struct perf_limits *perf_limits = NULL; + struct perf_limits *perf_limits = &global; if (!policy->cpuinfo.max_freq) return -ENODEV; @@ -2139,21 +2117,6 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) mutex_lock(&intel_pstate_limits_lock); - if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) { - pr_debug("set performance\n"); - if (!perf_limits) { - limits = &performance_limits; - perf_limits = limits; - } - } else { - pr_debug("set powersave\n"); - if (!perf_limits) { - limits = &powersave_limits; - perf_limits = limits; - } - - } - intel_pstate_update_perf_limits(policy, perf_limits); if (cpu->policy == CPUFREQ_POLICY_PERFORMANCE) { @@ -2177,16 +2140,9 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) static int intel_pstate_verify_policy(struct cpufreq_policy *policy) { struct cpudata *cpu = all_cpu_data[policy->cpu]; - struct perf_limits *perf_limits; - - if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) - perf_limits = &performance_limits; - else - perf_limits = &powersave_limits; update_turbo_state(); - policy->cpuinfo.max_freq = perf_limits->turbo_disabled || - perf_limits->no_turbo ? + policy->cpuinfo.max_freq = global.turbo_disabled || global.no_turbo ? cpu->pstate.max_freq : cpu->pstate.turbo_freq; @@ -2201,9 +2157,9 @@ static int intel_pstate_verify_policy(struct cpufreq_policy *policy) unsigned int max_freq, min_freq; max_freq = policy->cpuinfo.max_freq * - perf_limits->max_sysfs_pct / 100; + global.max_sysfs_pct / 100; min_freq = policy->cpuinfo.max_freq * - perf_limits->min_sysfs_pct / 100; + global.min_sysfs_pct / 100; cpufreq_verify_within_limits(policy, min_freq, max_freq); } @@ -2255,7 +2211,7 @@ static int __intel_pstate_cpu_init(struct cpufreq_policy *policy) /* cpuinfo and default policy values */ policy->cpuinfo.min_freq = cpu->pstate.min_pstate * cpu->pstate.scaling; update_turbo_state(); - policy->cpuinfo.max_freq = limits->turbo_disabled ? + policy->cpuinfo.max_freq = global.turbo_disabled ? cpu->pstate.max_pstate : cpu->pstate.turbo_pstate; policy->cpuinfo.max_freq *= cpu->pstate.scaling; @@ -2275,7 +2231,7 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy) return ret; policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; - if (limits->min_perf_pct == 100 && limits->max_perf_pct == 100) + if (IS_ENABLED(CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE)) policy->policy = CPUFREQ_POLICY_PERFORMANCE; else policy->policy = CPUFREQ_POLICY_POWERSAVE; @@ -2301,7 +2257,7 @@ static int intel_cpufreq_verify_policy(struct cpufreq_policy *policy) struct cpudata *cpu = all_cpu_data[policy->cpu]; update_turbo_state(); - policy->cpuinfo.max_freq = limits->turbo_disabled ? + policy->cpuinfo.max_freq = global.no_turbo || global.turbo_disabled ? cpu->pstate.max_freq : cpu->pstate.turbo_freq; cpufreq_verify_within_cpu_limits(policy); @@ -2309,26 +2265,6 @@ static int intel_cpufreq_verify_policy(struct cpufreq_policy *policy) return 0; } -static unsigned int intel_cpufreq_turbo_update(struct cpudata *cpu, - struct cpufreq_policy *policy, - unsigned int target_freq) -{ - unsigned int max_freq; - - update_turbo_state(); - - max_freq = limits->no_turbo || limits->turbo_disabled ? - cpu->pstate.max_freq : cpu->pstate.turbo_freq; - policy->cpuinfo.max_freq = max_freq; - if (policy->max > max_freq) - policy->max = max_freq; - - if (target_freq > max_freq) - target_freq = max_freq; - - return target_freq; -} - static int intel_cpufreq_target(struct cpufreq_policy *policy, unsigned int target_freq, unsigned int relation) @@ -2337,8 +2273,10 @@ static int intel_cpufreq_target(struct cpufreq_policy *policy, struct cpufreq_freqs freqs; int target_pstate; + update_turbo_state(); + freqs.old = policy->cur; - freqs.new = intel_cpufreq_turbo_update(cpu, policy, target_freq); + freqs.new = target_freq; cpufreq_freq_transition_begin(policy, &freqs); switch (relation) { @@ -2370,7 +2308,8 @@ static unsigned int intel_cpufreq_fast_switch(struct cpufreq_policy *policy, struct cpudata *cpu = all_cpu_data[policy->cpu]; int target_pstate; - target_freq = intel_cpufreq_turbo_update(cpu, policy, target_freq); + update_turbo_state(); + target_pstate = DIV_ROUND_UP(target_freq, cpu->pstate.scaling); target_pstate = intel_pstate_prepare_request(cpu, target_pstate); intel_pstate_update_pstate(cpu, target_pstate); @@ -2425,13 +2364,7 @@ static int intel_pstate_register_driver(void) { int ret; - intel_pstate_init_limits(&powersave_limits); - intel_pstate_set_performance_limits(&performance_limits); - if (IS_ENABLED(CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE) && - intel_pstate_driver == &intel_pstate) - limits = &performance_limits; - else - limits = &powersave_limits; + intel_pstate_init_limits(&global); ret = cpufreq_register_driver(intel_pstate_driver); if (ret) { |