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Revert "cpufreq: intel_pstate: Avoid calculation for max/min" 

Revert commit 4ef4514870 (cpufreq: intel_pstate: Avoid calculation for
max/min) as it depends on commit 37afb00032 (cpufreq: intel_pstate: Use
ACPI perf configuration) that causes problems to happen and needs to be
reverted.

Conflicts:
	drivers/cpufreq/intel_pstate.c

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki 2015-11-18 23:29:56 +01:00
parent d7e53e35f9
commit 799281a3c4
1 changed files with 5 additions and 43 deletions
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48
drivers/cpufreq/intel_pstate.c
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@ -163,8 +163,6 @@ struct perf_limits {
int max_sysfs_pct;
int min_policy_pct;
int min_sysfs_pct;
int max_perf_ctl;
int min_perf_ctl;
};
static struct perf_limits performance_limits = {
@ -191,8 +189,6 @@ static struct perf_limits powersave_limits = {
.max_sysfs_pct = 100,
.min_policy_pct = 0,
.min_sysfs_pct = 0,
.max_perf_ctl = 0,
.min_perf_ctl = 0,
};
#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
@ -938,23 +934,12 @@ static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max)
* policy, or by cpu specific default values determined through
* experimentation.
*/
if (limits->max_perf_ctl && limits->max_sysfs_pct >=
limits->max_policy_pct) {
*max = limits->max_perf_ctl;
} else {
max_perf_adj = fp_toint(mul_fp(int_tofp(max_perf),
limits->max_perf));
*max = clamp_t(int, max_perf_adj, cpu->pstate.min_pstate,
cpu->pstate.turbo_pstate);
}
max_perf_adj = fp_toint(mul_fp(int_tofp(max_perf), limits->max_perf));
*max = clamp_t(int, max_perf_adj,
cpu->pstate.min_pstate, cpu->pstate.turbo_pstate);
if (limits->min_perf_ctl) {
*min = limits->min_perf_ctl;
} else {
min_perf = fp_toint(mul_fp(int_tofp(max_perf),
limits->min_perf));
*min = clamp_t(int, min_perf, cpu->pstate.min_pstate, max_perf);
}
min_perf = fp_toint(mul_fp(int_tofp(max_perf), limits->min_perf));
*min = clamp_t(int, min_perf, cpu->pstate.min_pstate, max_perf);
}
static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate, bool force)
@ -1229,12 +1214,6 @@ static unsigned int intel_pstate_get(unsigned int cpu_num)
static int intel_pstate_set_policy(struct cpufreq_policy *policy)
{
#if IS_ENABLED(CONFIG_ACPI)
struct cpudata *cpu;
int i;
#endif
pr_debug("intel_pstate: %s max %u policy->max %u\n", __func__,
policy->cpuinfo.max_freq, policy->max);
if (!policy->cpuinfo.max_freq)
return -ENODEV;
@ -1270,23 +1249,6 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
limits->max_perf = div_fp(int_tofp(limits->max_perf_pct),
int_tofp(100));
#if IS_ENABLED(CONFIG_ACPI)
cpu = all_cpu_data[policy->cpu];
for (i = 0; i < cpu->acpi_perf_data.state_count; i++) {
int control;
control = convert_to_native_pstate_format(cpu, i);
if (control * cpu->pstate.scaling == policy->max)
limits->max_perf_ctl = control;
if (control * cpu->pstate.scaling == policy->min)
limits->min_perf_ctl = control;
}
pr_debug("intel_pstate: max %u policy_max %u perf_ctl [0x%x-0x%x]\n",
policy->cpuinfo.max_freq, policy->max, limits->min_perf_ctl,
limits->max_perf_ctl);
#endif
if (hwp_active)
intel_pstate_hwp_set();