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path: root/drivers/thermal/intel_powerclamp.c
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Diffstat (limited to 'drivers/thermal/intel_powerclamp.c')
-rw-r--r--drivers/thermal/intel_powerclamp.c47
1 files changed, 9 insertions, 38 deletions
diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c
index 6c7958825..015ce2eb6 100644
--- a/drivers/thermal/intel_powerclamp.c
+++ b/drivers/thermal/intel_powerclamp.c
@@ -510,12 +510,6 @@ static int start_power_clamp(void)
unsigned long cpu;
struct task_struct *thread;
- /* check if pkg cstate counter is completely 0, abort in this case */
- if (!has_pkg_state_counter()) {
- pr_err("pkg cstate counter not functional, abort\n");
- return -EINVAL;
- }
-
set_target_ratio = clamp(set_target_ratio, 0U, MAX_TARGET_RATIO - 1);
/* prevent cpu hotplug */
get_online_cpus();
@@ -672,35 +666,11 @@ static struct thermal_cooling_device_ops powerclamp_cooling_ops = {
.set_cur_state = powerclamp_set_cur_state,
};
-/* runs on Nehalem and later */
static const struct x86_cpu_id intel_powerclamp_ids[] __initconst = {
- { X86_VENDOR_INTEL, 6, 0x1a},
- { X86_VENDOR_INTEL, 6, 0x1c},
- { X86_VENDOR_INTEL, 6, 0x1e},
- { X86_VENDOR_INTEL, 6, 0x1f},
- { X86_VENDOR_INTEL, 6, 0x25},
- { X86_VENDOR_INTEL, 6, 0x26},
- { X86_VENDOR_INTEL, 6, 0x2a},
- { X86_VENDOR_INTEL, 6, 0x2c},
- { X86_VENDOR_INTEL, 6, 0x2d},
- { X86_VENDOR_INTEL, 6, 0x2e},
- { X86_VENDOR_INTEL, 6, 0x2f},
- { X86_VENDOR_INTEL, 6, 0x37},
- { X86_VENDOR_INTEL, 6, 0x3a},
- { X86_VENDOR_INTEL, 6, 0x3c},
- { X86_VENDOR_INTEL, 6, 0x3d},
- { X86_VENDOR_INTEL, 6, 0x3e},
- { X86_VENDOR_INTEL, 6, 0x3f},
- { X86_VENDOR_INTEL, 6, 0x45},
- { X86_VENDOR_INTEL, 6, 0x46},
- { X86_VENDOR_INTEL, 6, 0x47},
- { X86_VENDOR_INTEL, 6, 0x4c},
- { X86_VENDOR_INTEL, 6, 0x4d},
- { X86_VENDOR_INTEL, 6, 0x4e},
- { X86_VENDOR_INTEL, 6, 0x4f},
- { X86_VENDOR_INTEL, 6, 0x56},
- { X86_VENDOR_INTEL, 6, 0x57},
- { X86_VENDOR_INTEL, 6, 0x5e},
+ { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_MWAIT },
+ { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_ARAT },
+ { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_NONSTOP_TSC },
+ { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_CONSTANT_TSC},
{}
};
MODULE_DEVICE_TABLE(x86cpu, intel_powerclamp_ids);
@@ -712,11 +682,12 @@ static int __init powerclamp_probe(void)
boot_cpu_data.x86, boot_cpu_data.x86_model);
return -ENODEV;
}
- if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC) ||
- !boot_cpu_has(X86_FEATURE_CONSTANT_TSC) ||
- !boot_cpu_has(X86_FEATURE_MWAIT) ||
- !boot_cpu_has(X86_FEATURE_ARAT))
+
+ /* The goal for idle time alignment is to achieve package cstate. */
+ if (!has_pkg_state_counter()) {
+ pr_info("No package C-state available");
return -ENODEV;
+ }
/* find the deepest mwait value */
find_target_mwait();