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| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2018-01-10 22:38:52 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-01-11 20:57:20 +0300 |
| commit | d8de7a44e11f98f2c2a4c2e12e79ba9ffb839306 (patch) | |
| tree | f435c0d4d5653f5af5c4601bc0be090d05bb9ea2 /drivers/cpufreq/intel_pstate.c | |
| parent | dbd49b85eec7eb6d7ae61bad8306d5cdd85c142d (diff) | |
| download | linux-d8de7a44e11f98f2c2a4c2e12e79ba9ffb839306.tar.xz | |
cpufreq: intel_pstate: Add Skylake servers support
Currently intel_pstate can function only in HWP mode on Skylake servers.
When HWP feature is not enabled on the processor then acpi-cpufreq is
driver is used.
Based on the power and performance tests using intel_pstate scaling
algorithm the results are comparable. But intel_pstate brings in
additional features:
- Display of turbo frequency range, which many users like to see
- Place limits in the turbo frequency range when platform allows
Since these tests are done only using non PID algorithm introduced in
kernel version 4.14, this patch is not a backport candidate. So each user
has to carefully weigh the benefits before he backports.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/intel_pstate.c')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 3b6616b15c59..7edf7a0e5a96 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1620,6 +1620,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(INTEL_FAM6_XEON_PHI_KNM, knl_funcs), ICPU(INTEL_FAM6_ATOM_GOLDMONT, core_funcs), ICPU(INTEL_FAM6_ATOM_GEMINI_LAKE, core_funcs), + ICPU(INTEL_FAM6_SKYLAKE_X, core_funcs), {} }; MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids); |