As the initialized freq_tables maybe different from the p-states values, so the array index is different as well.
p-states value: [2400 2400 2000 ...], while the freq_tables: [2400 2000 ... CPUFREQ_TABLE_END]. After setted the freqs 2000, the perf->state is 3 while the freqs_table's index should be 2. So when call the get_cur_freq_on_cpu, the freqs value we get is 2400. So, fix the problem with the correct tables. Signed-off-by: Wang Weidong <wangweido...@huawei.com> --- drivers/cpufreq/acpi-cpufreq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index b0c18ed..2b934cb 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -365,6 +365,7 @@ static u32 get_cur_val(const struct cpumask *mask) static unsigned int get_cur_freq_on_cpu(unsigned int cpu) { struct acpi_cpufreq_data *data = per_cpu(acfreq_data, cpu); + struct acpi_processor_performance *perf; unsigned int freq; unsigned int cached_freq; @@ -375,7 +376,8 @@ static unsigned int get_cur_freq_on_cpu(unsigned int cpu) return 0; } - cached_freq = data->freq_table[data->acpi_data->state].frequency; + perf = data->acpi_data; + cached_freq = perf->states[perf->state].core_frequency * 1000; freq = extract_freq(get_cur_val(cpumask_of(cpu)), data); if (freq != cached_freq) { /* -- 1.7.12 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/