diff options
Diffstat (limited to 'drivers/cpufreq/pcc-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/pcc-cpufreq.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c index 0c56c9759672..099a849396f6 100644 --- a/drivers/cpufreq/pcc-cpufreq.c +++ b/drivers/cpufreq/pcc-cpufreq.c @@ -593,6 +593,15 @@ static int __init pcc_cpufreq_init(void) return ret; } + if (num_present_cpus() > 4) { + pcc_cpufreq_driver.flags |= CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING; + pr_err("%s: Too many CPUs, dynamic performance scaling disabled\n", + __func__); + pr_err("%s: Try to enable another scaling driver through BIOS settings\n", + __func__); + pr_err("%s: and complain to the system vendor\n", __func__); + } + ret = cpufreq_register_driver(&pcc_cpufreq_driver); return ret; |