cpufreq: get the cur_freq from acpi_processor_performance
PATCH 1/1 cpufreq: get the cur_freq from acpi_processor_performance
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 <[email protected]>
--- drivers/cpufreq/acpi-cpufreq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/cpufreq/acpi-cpufreq.c +3 -1
@@ -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) {/*
Signature · 1 line
1.7.12