--- zzzz-none-000/linux-3.10.107/drivers/thermal/intel_powerclamp.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/thermal/intel_powerclamp.c	2021-02-04 17:41:59.000000000 +0000
@@ -119,7 +119,7 @@
 	return ret;
 }
 
-static struct kernel_param_ops duration_ops = {
+static const struct kernel_param_ops duration_ops = {
 	.set = duration_set,
 	.get = param_get_int,
 };
@@ -167,7 +167,7 @@
 	return ret;
 }
 
-static struct kernel_param_ops window_size_ops = {
+static const struct kernel_param_ops window_size_ops = {
 	.set = window_size_set,
 	.get = param_get_int,
 };
@@ -206,42 +206,57 @@
 
 }
 
-static u64 pkg_state_counter(void)
+struct pkg_cstate_info {
+	bool skip;
+	int msr_index;
+	int cstate_id;
+};
+
+#define PKG_CSTATE_INIT(id) {				\
+		.msr_index = MSR_PKG_C##id##_RESIDENCY, \
+		.cstate_id = id				\
+			}
+
+static struct pkg_cstate_info pkg_cstates[] = {
+	PKG_CSTATE_INIT(2),
+	PKG_CSTATE_INIT(3),
+	PKG_CSTATE_INIT(6),
+	PKG_CSTATE_INIT(7),
+	PKG_CSTATE_INIT(8),
+	PKG_CSTATE_INIT(9),
+	PKG_CSTATE_INIT(10),
+	{NULL},
+};
+
+static bool has_pkg_state_counter(void)
 {
 	u64 val;
-	u64 count = 0;
+	struct pkg_cstate_info *info = pkg_cstates;
 
-	static bool skip_c2;
-	static bool skip_c3;
-	static bool skip_c6;
-	static bool skip_c7;
-
-	if (!skip_c2) {
-		if (!rdmsrl_safe(MSR_PKG_C2_RESIDENCY, &val))
-			count += val;
-		else
-			skip_c2 = true;
+	/* check if any one of the counter msrs exists */
+	while (info->msr_index) {
+		if (!rdmsrl_safe(info->msr_index, &val))
+			return true;
+		info++;
 	}
 
-	if (!skip_c3) {
-		if (!rdmsrl_safe(MSR_PKG_C3_RESIDENCY, &val))
-			count += val;
-		else
-			skip_c3 = true;
-	}
+	return false;
+}
 
-	if (!skip_c6) {
-		if (!rdmsrl_safe(MSR_PKG_C6_RESIDENCY, &val))
-			count += val;
-		else
-			skip_c6 = true;
-	}
+static u64 pkg_state_counter(void)
+{
+	u64 val;
+	u64 count = 0;
+	struct pkg_cstate_info *info = pkg_cstates;
 
-	if (!skip_c7) {
-		if (!rdmsrl_safe(MSR_PKG_C7_RESIDENCY, &val))
-			count += val;
-		else
-			skip_c7 = true;
+	while (info->msr_index) {
+		if (!info->skip) {
+			if (!rdmsrl_safe(info->msr_index, &val))
+				count += val;
+			else
+				info->skip = true;
+		}
+		info++;
 	}
 
 	return count;
@@ -325,7 +340,7 @@
 
 	/* check result for the last window */
 	msr_now = pkg_state_counter();
-	rdtscll(tsc_now);
+	tsc_now = rdtsc();
 
 	/* calculate pkg cstate vs tsc ratio */
 	if (!msr_last || !tsc_last)
@@ -426,7 +441,6 @@
 		 * allowed. thus jiffies are updated properly.
 		 */
 		preempt_disable();
-		tick_nohz_idle_enter();
 		/* mwait until target jiffies is reached */
 		while (time_before(jiffies, target_jiffies)) {
 			unsigned long ecx = 1;
@@ -438,14 +452,11 @@
 			 */
 			local_touch_nmi();
 			stop_critical_timings();
-			__monitor((void *)&current_thread_info()->flags, 0, 0);
-			cpu_relax(); /* allow HT sibling to run */
-			__mwait(eax, ecx);
+			mwait_idle_with_hints(eax, ecx);
 			start_critical_timings();
 			atomic_inc(&idle_wakeup_counter);
 		}
-		tick_nohz_idle_exit();
-		preempt_enable_no_resched();
+		preempt_enable();
 	}
 	del_timer_sync(&wakeup_timer);
 	clear_bit(cpunr, cpu_clamping_mask);
@@ -471,7 +482,7 @@
 	u64 val64;
 
 	msr_now = pkg_state_counter();
-	rdtscll(tsc_now);
+	tsc_now = rdtsc();
 	jiffies_now = jiffies;
 
 	/* calculate pkg cstate vs tsc ratio */
@@ -500,7 +511,7 @@
 	struct task_struct *thread;
 
 	/* check if pkg cstate counter is completely 0, abort in this case */
-	if (!pkg_state_counter()) {
+	if (!has_pkg_state_counter()) {
 		pr_err("pkg cstate counter not functional, abort\n");
 		return -EINVAL;
 	}
@@ -662,7 +673,7 @@
 };
 
 /* runs on Nehalem and later */
-static const struct x86_cpu_id intel_powerclamp_ids[] = {
+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},
@@ -674,12 +685,27 @@
 	{ 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},
 	{}
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_powerclamp_ids);
 
-static int powerclamp_probe(void)
+static int __init powerclamp_probe(void)
 {
 	if (!x86_match_cpu(intel_powerclamp_ids)) {
 		pr_err("Intel powerclamp does not run on family %d model %d\n",
@@ -745,7 +771,7 @@
 	debugfs_remove_recursive(debug_dir);
 }
 
-static int powerclamp_init(void)
+static int __init powerclamp_init(void)
 {
 	int retval;
 	int bitmap_size;
@@ -758,25 +784,43 @@
 	/* probe cpu features and ids here */
 	retval = powerclamp_probe();
 	if (retval)
-		return retval;
+		goto exit_free;
+
 	/* set default limit, maybe adjusted during runtime based on feedback */
 	window_size = 2;
 	register_hotcpu_notifier(&powerclamp_cpu_notifier);
+
 	powerclamp_thread = alloc_percpu(struct task_struct *);
+	if (!powerclamp_thread) {
+		retval = -ENOMEM;
+		goto exit_unregister;
+	}
+
 	cooling_dev = thermal_cooling_device_register("intel_powerclamp", NULL,
 						&powerclamp_cooling_ops);
-	if (IS_ERR(cooling_dev))
-		return -ENODEV;
+	if (IS_ERR(cooling_dev)) {
+		retval = -ENODEV;
+		goto exit_free_thread;
+	}
 
 	if (!duration)
 		duration = jiffies_to_msecs(DEFAULT_DURATION_JIFFIES);
+
 	powerclamp_create_debug_files();
 
 	return 0;
+
+exit_free_thread:
+	free_percpu(powerclamp_thread);
+exit_unregister:
+	unregister_hotcpu_notifier(&powerclamp_cpu_notifier);
+exit_free:
+	kfree(cpu_clamping_mask);
+	return retval;
 }
 module_init(powerclamp_init);
 
-static void powerclamp_exit(void)
+static void __exit powerclamp_exit(void)
 {
 	unregister_hotcpu_notifier(&powerclamp_cpu_notifier);
 	end_power_clamp();