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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-03-28 00:04:30 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-03-28 23:12:07 +0200 |
| commit | 6404367862bb25730e373cb9d443757b76f6abcc (patch) | |
| tree | d44c03b0a94eedc2ed32fdcf7d3a7c1b32fa3d1f /drivers | |
| parent | e14cf8857ebd7486a4e30fa7dad06ba187e6cb04 (diff) | |
| download | linux-stable-6404367862bb25730e373cb9d443757b76f6abcc.tar.gz linux-stable-6404367862bb25730e373cb9d443757b76f6abcc.tar.bz2 linux-stable-6404367862bb25730e373cb9d443757b76f6abcc.zip | |
cpufreq: intel_pstate: Drop pointless initialization of PID parameters
The P-state selection algorithm used by intel_pstate for Atom
processors is not based on the PID controller and the initialization
of PID parametrs for those processors is pointless and confusing, so
drop it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 28 |
1 files changed, 2 insertions, 26 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index a7ed42d6f366..efce4e7eeeca 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1540,14 +1540,6 @@ static struct cpu_defaults core_params = { }; static const struct cpu_defaults silvermont_params = { - .pid_policy = { - .sample_rate_ms = 10, - .deadband = 0, - .setpoint = 60, - .p_gain_pct = 14, - .d_gain_pct = 0, - .i_gain_pct = 4, - }, .funcs = { .get_max = atom_get_max_pstate, .get_max_physical = atom_get_max_pstate, @@ -1561,14 +1553,6 @@ static const struct cpu_defaults silvermont_params = { }; static const struct cpu_defaults airmont_params = { - .pid_policy = { - .sample_rate_ms = 10, - .deadband = 0, - .setpoint = 60, - .p_gain_pct = 14, - .d_gain_pct = 0, - .i_gain_pct = 4, - }, .funcs = { .get_max = atom_get_max_pstate, .get_max_physical = atom_get_max_pstate, @@ -1602,14 +1586,6 @@ static const struct cpu_defaults knl_params = { }; static const struct cpu_defaults bxt_params = { - .pid_policy = { - .sample_rate_ms = 10, - .deadband = 0, - .setpoint = 60, - .p_gain_pct = 14, - .d_gain_pct = 0, - .i_gain_pct = 4, - }, .funcs = { .get_max = core_get_max_pstate, .get_max_physical = core_get_max_pstate_physical, @@ -2637,9 +2613,9 @@ static int __init intel_pstate_init(void) return -ENODEV; cpu_def = (struct cpu_defaults *)id->driver_data; - - copy_pid_params(&cpu_def->pid_policy); copy_cpu_funcs(&cpu_def->funcs); + if (pstate_funcs.get_target_pstate == get_target_pstate_use_performance) + copy_pid_params(&cpu_def->pid_policy); } if (intel_pstate_msrs_not_valid()) |