diff options
Diffstat (limited to 'arch/x86/kernel/cpu/cpufreq')
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/elanfreq.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/p4-clockmod.c | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/powernow-k7.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/powernow-k8.c | 11 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c | 149 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/speedstep-ich.c | 4 |
8 files changed, 106 insertions, 77 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/Kconfig b/arch/x86/kernel/cpu/cpufreq/Kconfig index cb7a5715596..efae3b22a0f 100644 --- a/arch/x86/kernel/cpu/cpufreq/Kconfig +++ b/arch/x86/kernel/cpu/cpufreq/Kconfig @@ -235,9 +235,9 @@ config X86_LONGHAUL If in doubt, say N. config X86_E_POWERSAVER - tristate "VIA C7 Enhanced PowerSaver (EXPERIMENTAL)" + tristate "VIA C7 Enhanced PowerSaver" select CPU_FREQ_TABLE - depends on X86_32 && EXPERIMENTAL + depends on X86_32 help This adds the CPUFreq driver for VIA C7 processors. diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c index b0c8208df9f..dd097b83583 100644 --- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -202,7 +202,7 @@ static void drv_write(struct drv_cmd *cmd) cpumask_t saved_mask = current->cpus_allowed; unsigned int i; - for_each_cpu_mask(i, cmd->mask) { + for_each_cpu_mask_nr(i, cmd->mask) { set_cpus_allowed_ptr(current, &cpumask_of_cpu(i)); do_drv_write(cmd); } @@ -451,7 +451,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy, freqs.old = perf->states[perf->state].core_frequency * 1000; freqs.new = data->freq_table[next_state].frequency; - for_each_cpu_mask(i, cmd.mask) { + for_each_cpu_mask_nr(i, cmd.mask) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); } @@ -466,7 +466,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy, } } - for_each_cpu_mask(i, cmd.mask) { + for_each_cpu_mask_nr(i, cmd.mask) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); } diff --git a/arch/x86/kernel/cpu/cpufreq/elanfreq.c b/arch/x86/kernel/cpu/cpufreq/elanfreq.c index 94619c22f56..e4a4bf870e9 100644 --- a/arch/x86/kernel/cpu/cpufreq/elanfreq.c +++ b/arch/x86/kernel/cpu/cpufreq/elanfreq.c @@ -44,7 +44,7 @@ struct s_elan_multiplier { * It is important that the frequencies * are listed in ascending order here! */ -struct s_elan_multiplier elan_multiplier[] = { +static struct s_elan_multiplier elan_multiplier[] = { {1000, 0x02, 0x18}, {2000, 0x02, 0x10}, {4000, 0x02, 0x08}, diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c index 199e4e05e5d..f1685fb91fb 100644 --- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c +++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c @@ -122,7 +122,7 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy, return 0; /* notifiers */ - for_each_cpu_mask(i, policy->cpus) { + for_each_cpu_mask_nr(i, policy->cpus) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); } @@ -130,11 +130,11 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy, /* run on each logical CPU, see section 13.15.3 of IA32 Intel Architecture Software * Developer's Manual, Volume 3 */ - for_each_cpu_mask(i, policy->cpus) + for_each_cpu_mask_nr(i, policy->cpus) cpufreq_p4_setdc(i, p4clockmod_table[newstate].index); /* notifiers */ - for_each_cpu_mask(i, policy->cpus) { + for_each_cpu_mask_nr(i, policy->cpus) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); } diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k7.h b/arch/x86/kernel/cpu/cpufreq/powernow-k7.h index f8a63b3664e..35fb4eaf6e1 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k7.h +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k7.h @@ -1,5 +1,4 @@ /* - * $Id: powernow-k7.h,v 1.2 2003/02/10 18:26:01 davej Exp $ * (C) 2003 Dave Jones. * * Licensed under the terms of the GNU GPL License version 2. diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c index 206791eb46e..84bb395038d 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c @@ -66,7 +66,6 @@ static u32 find_freq_from_fid(u32 fid) return 800 + (fid * 100); } - /* Return a frequency in KHz, given an input fid */ static u32 find_khz_freq_from_fid(u32 fid) { @@ -78,7 +77,6 @@ static u32 find_khz_freq_from_pstate(struct cpufreq_frequency_table *data, u32 p return data[pstate].frequency; } - /* Return the vco fid for an input fid * * Each "low" fid has corresponding "high" fid, and you can get to "low" fids @@ -166,7 +164,6 @@ static void fidvid_msr_init(void) wrmsr(MSR_FIDVID_CTL, lo, hi); } - /* write the new fid value along with the other control fields to the msr */ static int write_new_fid(struct powernow_k8_data *data, u32 fid) { @@ -966,7 +963,7 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data, unsigned i freqs.old = find_khz_freq_from_fid(data->currfid); freqs.new = find_khz_freq_from_fid(fid); - for_each_cpu_mask(i, *(data->available_cores)) { + for_each_cpu_mask_nr(i, *(data->available_cores)) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); } @@ -974,7 +971,7 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data, unsigned i res = transition_fid_vid(data, fid, vid); freqs.new = find_khz_freq_from_fid(data->currfid); - for_each_cpu_mask(i, *(data->available_cores)) { + for_each_cpu_mask_nr(i, *(data->available_cores)) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); } @@ -997,7 +994,7 @@ static int transition_frequency_pstate(struct powernow_k8_data *data, unsigned i freqs.old = find_khz_freq_from_pstate(data->powernow_table, data->currpstate); freqs.new = find_khz_freq_from_pstate(data->powernow_table, pstate); - for_each_cpu_mask(i, *(data->available_cores)) { + for_each_cpu_mask_nr(i, *(data->available_cores)) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); } @@ -1005,7 +1002,7 @@ static int transition_frequency_pstate(struct powernow_k8_data *data, unsigned i res = transition_pstate(data, pstate); freqs.new = find_khz_freq_from_pstate(data->powernow_table, pstate); - for_each_cpu_mask(i, *(data->available_cores)) { + for_each_cpu_mask_nr(i, *(data->available_cores)) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); } diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c index 908dd347c67..15e13c01cc3 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c @@ -28,7 +28,8 @@ #define PFX "speedstep-centrino: " #define MAINTAINER "cpufreq@lists.linux.org.uk" -#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "speedstep-centrino", msg) +#define dprintk(msg...) \ + cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "speedstep-centrino", msg) #define INTEL_MSR_RANGE (0xffff) @@ -66,11 +67,12 @@ struct cpu_model struct cpufreq_frequency_table *op_points; /* clock/voltage pairs */ }; -static int centrino_verify_cpu_id(const struct cpuinfo_x86 *c, const struct cpu_id *x); +static int centrino_verify_cpu_id(const struct cpuinfo_x86 *c, + const struct cpu_id *x); /* Operating points for current CPU */ -static struct cpu_model *centrino_model[NR_CPUS]; -static const struct cpu_id *centrino_cpu[NR_CPUS]; +static DEFINE_PER_CPU(struct cpu_model *, centrino_model); +static DEFINE_PER_CPU(const struct cpu_id *, centrino_cpu); static struct cpufreq_driver centrino_driver; @@ -255,7 +257,7 @@ static int centrino_cpu_init_table(struct cpufreq_policy *policy) return -ENOENT; } - centrino_model[policy->cpu] = model; + per_cpu(centrino_model, policy->cpu) = model; dprintk("found \"%s\": max frequency: %dkHz\n", model->model_name, model->max_freq); @@ -264,10 +266,14 @@ static int centrino_cpu_init_table(struct cpufreq_policy *policy) } #else -static inline int centrino_cpu_init_table(struct cpufreq_policy *policy) { return -ENODEV; } +static inline int centrino_cpu_init_table(struct cpufreq_policy *policy) +{ + return -ENODEV; +} #endif /* CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE */ -static int centrino_verify_cpu_id(const struct cpuinfo_x86 *c, const struct cpu_id *x) +static int centrino_verify_cpu_id(const struct cpuinfo_x86 *c, + const struct cpu_id *x) { if ((c->x86 == x->x86) && (c->x86_model == x->x86_model) && @@ -286,23 +292,28 @@ static unsigned extract_clock(unsigned msr, unsigned int cpu, int failsafe) * for centrino, as some DSDTs are buggy. * Ideally, this can be done using the acpi_data structure. */ - if ((centrino_cpu[cpu] == &cpu_ids[CPU_BANIAS]) || - (centrino_cpu[cpu] == &cpu_ids[CPU_DOTHAN_A1]) || - (centrino_cpu[cpu] == &cpu_ids[CPU_DOTHAN_B0])) { + if ((per_cpu(centrino_cpu, cpu) == &cpu_ids[CPU_BANIAS]) || + (per_cpu(centrino_cpu, cpu) == &cpu_ids[CPU_DOTHAN_A1]) || + (per_cpu(centrino_cpu, cpu) == &cpu_ids[CPU_DOTHAN_B0])) { msr = (msr >> 8) & 0xff; return msr * 100000; } - if ((!centrino_model[cpu]) || (!centrino_model[cpu]->op_points)) + if ((!per_cpu(centrino_model, cpu)) || + (!per_cpu(centrino_model, cpu)->op_points)) return 0; msr &= 0xffff; - for (i=0;centrino_model[cpu]->op_points[i].frequency != CPUFREQ_TABLE_END; i++) { - if (msr == centrino_model[cpu]->op_points[i].index) - return centrino_model[cpu]->op_points[i].frequency; + for (i = 0; + per_cpu(centrino_model, cpu)->op_points[i].frequency + != CPUFREQ_TABLE_END; + i++) { + if (msr == per_cpu(centrino_model, cpu)->op_points[i].index) + return per_cpu(centrino_model, cpu)-> + op_points[i].frequency; } if (failsafe) - return centrino_model[cpu]->op_points[i-1].frequency; + return per_cpu(centrino_model, cpu)->op_points[i-1].frequency; else return 0; } @@ -347,7 +358,8 @@ static int centrino_cpu_init(struct cpufreq_policy *policy) int i; /* Only Intel makes Enhanced Speedstep-capable CPUs */ - if (cpu->x86_vendor != X86_VENDOR_INTEL || !cpu_has(cpu, X86_FEATURE_EST)) + if (cpu->x86_vendor != X86_VENDOR_INTEL || + !cpu_has(cpu, X86_FEATURE_EST)) return -ENODEV; if (cpu_has(cpu, X86_FEATURE_CONSTANT_TSC)) @@ -361,9 +373,9 @@ static int centrino_cpu_init(struct cpufreq_policy *policy) break; if (i != N_IDS) - centrino_cpu[policy->cpu] = &cpu_ids[i]; + per_cpu(centrino_cpu, policy->cpu) = &cpu_ids[i]; - if (!centrino_cpu[policy->cpu]) { + if (!per_cpu(centrino_cpu, policy->cpu)) { dprintk("found unsupported CPU with " "Enhanced SpeedStep: send /proc/cpuinfo to " MAINTAINER "\n"); @@ -386,23 +398,26 @@ static int centrino_cpu_init(struct cpufreq_policy *policy) /* check to see if it stuck */ rdmsr(MSR_IA32_MISC_ENABLE, l, h); if (!(l & (1<<16))) { - printk(KERN_INFO PFX "couldn't enable Enhanced SpeedStep\n"); + printk(KERN_INFO PFX + "couldn't enable Enhanced SpeedStep\n"); return -ENODEV; } } freq = get_cur_freq(policy->cpu); - - policy->cpuinfo.transition_latency = 10000; /* 10uS transition latency */ + policy->cpuinfo.transition_latency = 10000; + /* 10uS transition latency */ policy->cur = freq; dprintk("centrino_cpu_init: cur=%dkHz\n", policy->cur); - ret = cpufreq_frequency_table_cpuinfo(policy, centrino_model[policy->cpu]->op_points); + ret = cpufreq_frequency_table_cpuinfo(policy, + per_cpu(centrino_model, policy->cpu)->op_points); if (ret) return (ret); - cpufreq_frequency_table_get_attr(centrino_model[policy->cpu]->op_points, policy->cpu); + cpufreq_frequency_table_get_attr( + per_cpu(centrino_model, policy->cpu)->op_points, policy->cpu); return 0; } @@ -411,12 +426,12 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy) { unsigned int cpu = policy->cpu; - if (!centrino_model[cpu]) + if (!per_cpu(centrino_model, cpu)) return -ENODEV; cpufreq_frequency_table_put_attr(cpu); - centrino_model[cpu] = NULL; + per_cpu(centrino_model, cpu) = NULL; return 0; } @@ -430,17 +445,26 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy) */ static int centrino_verify (struct cpufreq_policy *policy) { - return cpufreq_frequency_table_verify(policy, centrino_model[policy->cpu]->op_points); + return cpufreq_frequency_table_verify(policy, + per_cpu(centrino_model, policy->cpu)->op_points); } /** * centrino_setpolicy - set a new CPUFreq policy * @policy: new policy * @target_freq: the target frequency - * @relation: how that frequency relates to achieved frequency (CPUFREQ_RELATION_L or CPUFREQ_RELATION_H) + * @relation: how that frequency relates to achieved frequency + * (CPUFREQ_RELATION_L or CPUFREQ_RELATION_H) * * Sets a new CPUFreq policy. */ +struct allmasks { + cpumask_t online_policy_cpus; + cpumask_t saved_mask; + cpumask_t set_mask; + cpumask_t covered_cpus; +}; + static int centrino_target (struct cpufreq_policy *policy, unsigned int target_freq, unsigned int relation) @@ -448,48 +472,55 @@ static int centrino_target (struct cpufreq_policy *policy, unsigned int newstate = 0; unsigned int msr, oldmsr = 0, h = 0, cpu = policy->cpu; struct cpufreq_freqs freqs; - cpumask_t online_policy_cpus; - cpumask_t saved_mask; - cpumask_t set_mask; - cpumask_t covered_cpus; int retval = 0; unsigned int j, k, first_cpu, tmp; - - if (unlikely(centrino_model[cpu] == NULL)) - return -ENODEV; + CPUMASK_ALLOC(allmasks); + CPUMASK_PTR(online_policy_cpus, allmasks); + CPUMASK_PTR(saved_mask, allmasks); + CPUMASK_PTR(set_mask, allmasks); + CPUMASK_PTR(covered_cpus, allmasks); + + if (unlikely(allmasks == NULL)) + return -ENOMEM; + + if (unlikely(per_cpu(centrino_model, cpu) == NULL)) { + retval = -ENODEV; + goto out; + } if (unlikely(cpufreq_frequency_table_target(policy, - centrino_model[cpu]->op_points, + per_cpu(centrino_model, cpu)->op_points, target_freq, relation, &newstate))) { - return -EINVAL; + retval = -EINVAL; + goto out; } #ifdef CONFIG_HOTPLUG_CPU /* cpufreq holds the hotplug lock, so we are safe from here on */ - cpus_and(online_policy_cpus, cpu_online_map, policy->cpus); + cpus_and(*online_policy_cpus, cpu_online_map, policy->cpus); #else - online_policy_cpus = policy->cpus; + *online_policy_cpus = policy->cpus; #endif - saved_mask = current->cpus_allowed; + *saved_mask = current->cpus_allowed; first_cpu = 1; - cpus_clear(covered_cpus); - for_each_cpu_mask(j, online_policy_cpus) { + cpus_clear(*covered_cpus); + for_each_cpu_mask_nr(j, *online_policy_cpus) { /* * Support for SMP systems. * Make sure we are running on CPU that wants to change freq */ - cpus_clear(set_mask); + cpus_clear(*set_mask); if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) - cpus_or(set_mask, set_mask, online_policy_cpus); + cpus_or(*set_mask, *set_mask, *online_policy_cpus); else - cpu_set(j, set_mask); + cpu_set(j, *set_mask); - set_cpus_allowed_ptr(current, &set_mask); + set_cpus_allowed_ptr(current, set_mask); preempt_disable(); - if (unlikely(!cpu_isset(smp_processor_id(), set_mask))) { + if (unlikely(!cpu_isset(smp_processor_id(), *set_mask))) { dprintk("couldn't limit to CPUs in this domain\n"); retval = -EAGAIN; if (first_cpu) { @@ -500,7 +531,7 @@ static int centrino_target (struct cpufreq_policy *policy, break; } - msr = centrino_model[cpu]->op_points[newstate].index; + msr = per_cpu(centrino_model, cpu)->op_points[newstate].index; if (first_cpu) { rdmsr(MSR_IA32_PERF_CTL, oldmsr, h); @@ -517,7 +548,7 @@ static int centrino_target (struct cpufreq_policy *policy, dprintk("target=%dkHz old=%d new=%d msr=%04x\n", target_freq, freqs.old, freqs.new, msr); - for_each_cpu_mask(k, online_policy_cpus) { + for_each_cpu_mask_nr(k, *online_policy_cpus) { freqs.cpu = k; cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); @@ -536,11 +567,11 @@ static int centrino_target (struct cpufreq_policy *policy, break; } - cpu_set(j, covered_cpus); + cpu_set(j, *covered_cpus); preempt_enable(); } - for_each_cpu_mask(k, online_policy_cpus) { + for_each_cpu_mask_nr(k, *online_policy_cpus) { freqs.cpu = k; cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); } @@ -553,30 +584,32 @@ static int centrino_target (struct cpufreq_policy *policy, * Best effort undo.. */ - if (!cpus_empty(covered_cpus)) { - for_each_cpu_mask(j, covered_cpus) { + if (!cpus_empty(*covered_cpus)) + for_each_cpu_mask_nr(j, *covered_cpus) { set_cpus_allowed_ptr(current, &cpumask_of_cpu(j)); wrmsr(MSR_IA32_PERF_CTL, oldmsr, h); } - } tmp = freqs.new; freqs.new = freqs.old; freqs.old = tmp; - for_each_cpu_mask(j, online_policy_cpus) { + for_each_cpu_mask_nr(j, *online_policy_cpus) { freqs.cpu = j; cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); } } - set_cpus_allowed_ptr(current, &saved_mask); - return 0; + set_cpus_allowed_ptr(current, saved_mask); + retval = 0; + goto out; migrate_end: preempt_enable(); - set_cpus_allowed_ptr(current, &saved_mask); - return 0; + set_cpus_allowed_ptr(current, saved_mask); +out: + CPUMASK_FREE(allmasks); + return retval; } static struct freq_attr* centrino_attr[] = { diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c index 1b50244b1fd..191f7263c61 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c @@ -279,7 +279,7 @@ static int speedstep_target (struct cpufreq_policy *policy, cpus_allowed = current->cpus_allowed; - for_each_cpu_mask(i, policy->cpus) { + for_each_cpu_mask_nr(i, policy->cpus) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); } @@ -292,7 +292,7 @@ static int speedstep_target (struct cpufreq_policy *policy, /* allow to be run on all CPUs */ set_cpus_allowed_ptr(current, &cpus_allowed); - for_each_cpu_mask(i, policy->cpus) { + for_each_cpu_mask_nr(i, policy->cpus) { freqs.cpu = i; cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); } |