x86/mce: Streamline MCE subsystem's naming

Rename the containing folder to "mce" which is the most widespread name.
Drop the "mce[-_]" filename prefix of some compilation units (while
others don't have it).

This unifies the file naming in the MCE subsystem:

mce/
|-- amd.c
|-- apei.c
|-- core.c
|-- dev-mcelog.c
|-- genpool.c
|-- inject.c
|-- intel.c
|-- internal.h
|-- Makefile
|-- p5.c
|-- severity.c
|-- therm_throt.c
|-- threshold.c
`-- winchip.c

No functional changes.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20181205141323.14995-1-bp@alien8.de

1 files changed, 0 insertions, 520 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
deleted file mode 100644
index 2da67b70ba98..000000000000
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ /dev/null
@@ -1,520 +0,0 @@
-/*
- * Thermal throttle event support code (such as syslog messaging and rate
- * limiting) that was factored out from x86_64 (mce_intel.c) and i386 (p4.c).
- *
- * This allows consistent reporting of CPU thermal throttle events.
- *
- * Maintains a counter in /sys that keeps track of the number of thermal
- * events, such that the user knows how bad the thermal problem might be
- * (since the logging to syslog is rate limited).
- *
- * Author: Dmitriy Zavin (dmitriyz@google.com)
- *
- * Credits: Adapted from Zwane Mwaikambo's original code in mce_intel.c.
- *          Inspired by Ross Biro's and Al Borchers' counter code.
- */
-#include <linux/interrupt.h>
-#include <linux/notifier.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/percpu.h>
-#include <linux/export.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/cpu.h>
-
-#include <asm/processor.h>
-#include <asm/apic.h>
-#include <asm/mce.h>
-#include <asm/msr.h>
-#include <asm/trace/irq_vectors.h>
-
-/* How long to wait between reporting thermal events */
-#define CHECK_INTERVAL		(300 * HZ)
-
-#define THERMAL_THROTTLING_EVENT	0
-#define POWER_LIMIT_EVENT		1
-
-/*
- * Current thermal event state:
- */
-struct _thermal_state {
-	bool			new_event;
-	int			event;
-	u64			next_check;
-	unsigned long		count;
-	unsigned long		last_count;
-};
-
-struct thermal_state {
-	struct _thermal_state core_throttle;
-	struct _thermal_state core_power_limit;
-	struct _thermal_state package_throttle;
-	struct _thermal_state package_power_limit;
-	struct _thermal_state core_thresh0;
-	struct _thermal_state core_thresh1;
-	struct _thermal_state pkg_thresh0;
-	struct _thermal_state pkg_thresh1;
-};
-
-/* Callback to handle core threshold interrupts */
-int (*platform_thermal_notify)(__u64 msr_val);
-EXPORT_SYMBOL(platform_thermal_notify);
-
-/* Callback to handle core package threshold_interrupts */
-int (*platform_thermal_package_notify)(__u64 msr_val);
-EXPORT_SYMBOL_GPL(platform_thermal_package_notify);
-
-/* Callback support of rate control, return true, if
- * callback has rate control */
-bool (*platform_thermal_package_rate_control)(void);
-EXPORT_SYMBOL_GPL(platform_thermal_package_rate_control);
-
-
-static DEFINE_PER_CPU(struct thermal_state, thermal_state);
-
-static atomic_t therm_throt_en	= ATOMIC_INIT(0);
-
-static u32 lvtthmr_init __read_mostly;
-
-#ifdef CONFIG_SYSFS
-#define define_therm_throt_device_one_ro(_name)				\
-	static DEVICE_ATTR(_name, 0444,					\
-			   therm_throt_device_show_##_name,		\
-				   NULL)				\
-
-#define define_therm_throt_device_show_func(event, name)		\
-									\
-static ssize_t therm_throt_device_show_##event##_##name(		\
-			struct device *dev,				\
-			struct device_attribute *attr,			\
-			char *buf)					\
-{									\
-	unsigned int cpu = dev->id;					\
-	ssize_t ret;							\
-									\
-	preempt_disable();	/* CPU hotplug */			\
-	if (cpu_online(cpu)) {						\
-		ret = sprintf(buf, "%lu\n",				\
-			      per_cpu(thermal_state, cpu).event.name);	\
-	} else								\
-		ret = 0;						\
-	preempt_enable();						\
-									\
-	return ret;							\
-}
-
-define_therm_throt_device_show_func(core_throttle, count);
-define_therm_throt_device_one_ro(core_throttle_count);
-
-define_therm_throt_device_show_func(core_power_limit, count);
-define_therm_throt_device_one_ro(core_power_limit_count);
-
-define_therm_throt_device_show_func(package_throttle, count);
-define_therm_throt_device_one_ro(package_throttle_count);
-
-define_therm_throt_device_show_func(package_power_limit, count);
-define_therm_throt_device_one_ro(package_power_limit_count);
-
-static struct attribute *thermal_throttle_attrs[] = {
-	&dev_attr_core_throttle_count.attr,
-	NULL
-};
-
-static const struct attribute_group thermal_attr_group = {
-	.attrs	= thermal_throttle_attrs,
-	.name	= "thermal_throttle"
-};
-#endif /* CONFIG_SYSFS */
-
-#define CORE_LEVEL	0
-#define PACKAGE_LEVEL	1
-
-/***
- * therm_throt_process - Process thermal throttling event from interrupt
- * @curr: Whether the condition is current or not (boolean), since the
- *        thermal interrupt normally gets called both when the thermal
- *        event begins and once the event has ended.
- *
- * This function is called by the thermal interrupt after the
- * IRQ has been acknowledged.
- *
- * It will take care of rate limiting and printing messages to the syslog.
- */
-static void therm_throt_process(bool new_event, int event, int level)
-{
-	struct _thermal_state *state;
-	unsigned int this_cpu = smp_processor_id();
-	bool old_event;
-	u64 now;
-	struct thermal_state *pstate = &per_cpu(thermal_state, this_cpu);
-
-	now = get_jiffies_64();
-	if (level == CORE_LEVEL) {
-		if (event == THERMAL_THROTTLING_EVENT)
-			state = &pstate->core_throttle;
-		else if (event == POWER_LIMIT_EVENT)
-			state = &pstate->core_power_limit;
-		else
-			return;
-	} else if (level == PACKAGE_LEVEL) {
-		if (event == THERMAL_THROTTLING_EVENT)
-			state = &pstate->package_throttle;
-		else if (event == POWER_LIMIT_EVENT)
-			state = &pstate->package_power_limit;
-		else
-			return;
-	} else
-		return;
-
-	old_event = state->new_event;
-	state->new_event = new_event;
-
-	if (new_event)
-		state->count++;
-
-	if (time_before64(now, state->next_check) &&
-			state->count != state->last_count)
-		return;
-
-	state->next_check = now + CHECK_INTERVAL;
-	state->last_count = state->count;
-
-	/* if we just entered the thermal event */
-	if (new_event) {
-		if (event == THERMAL_THROTTLING_EVENT)
-			pr_crit("CPU%d: %s temperature above threshold, cpu clock throttled (total events = %lu)\n",
-				this_cpu,
-				level == CORE_LEVEL ? "Core" : "Package",
-				state->count);
-		return;
-	}
-	if (old_event) {
-		if (event == THERMAL_THROTTLING_EVENT)
-			pr_info("CPU%d: %s temperature/speed normal\n", this_cpu,
-				level == CORE_LEVEL ? "Core" : "Package");
-		return;
-	}
-}
-
-static int thresh_event_valid(int level, int event)
-{
-	struct _thermal_state *state;
-	unsigned int this_cpu = smp_processor_id();
-	struct thermal_state *pstate = &per_cpu(thermal_state, this_cpu);
-	u64 now = get_jiffies_64();
-
-	if (level == PACKAGE_LEVEL)
-		state = (event == 0) ? &pstate->pkg_thresh0 :
-						&pstate->pkg_thresh1;
-	else
-		state = (event == 0) ? &pstate->core_thresh0 :
-						&pstate->core_thresh1;
-
-	if (time_before64(now, state->next_check))
-		return 0;
-
-	state->next_check = now + CHECK_INTERVAL;
-
-	return 1;
-}
-
-static bool int_pln_enable;
-static int __init int_pln_enable_setup(char *s)
-{
-	int_pln_enable = true;
-
-	return 1;
-}
-__setup("int_pln_enable", int_pln_enable_setup);
-
-#ifdef CONFIG_SYSFS
-/* Add/Remove thermal_throttle interface for CPU device: */
-static int thermal_throttle_add_dev(struct device *dev, unsigned int cpu)
-{
-	int err;
-	struct cpuinfo_x86 *c = &cpu_data(cpu);
-
-	err = sysfs_create_group(&dev->kobj, &thermal_attr_group);
-	if (err)
-		return err;
-
-	if (cpu_has(c, X86_FEATURE_PLN) && int_pln_enable)
-		err = sysfs_add_file_to_group(&dev->kobj,
-					      &dev_attr_core_power_limit_count.attr,
-					      thermal_attr_group.name);
-	if (cpu_has(c, X86_FEATURE_PTS)) {
-		err = sysfs_add_file_to_group(&dev->kobj,
-					      &dev_attr_package_throttle_count.attr,
-					      thermal_attr_group.name);
-		if (cpu_has(c, X86_FEATURE_PLN) && int_pln_enable)
-			err = sysfs_add_file_to_group(&dev->kobj,
-					&dev_attr_package_power_limit_count.attr,
-					thermal_attr_group.name);
-	}
-
-	return err;
-}
-
-static void thermal_throttle_remove_dev(struct device *dev)
-{
-	sysfs_remove_group(&dev->kobj, &thermal_attr_group);
-}
-
-/* Get notified when a cpu comes on/off. Be hotplug friendly. */
-static int thermal_throttle_online(unsigned int cpu)
-{
-	struct device *dev = get_cpu_device(cpu);
-
-	return thermal_throttle_add_dev(dev, cpu);
-}
-
-static int thermal_throttle_offline(unsigned int cpu)
-{
-	struct device *dev = get_cpu_device(cpu);
-
-	thermal_throttle_remove_dev(dev);
-	return 0;
-}
-
-static __init int thermal_throttle_init_device(void)
-{
-	int ret;
-
-	if (!atomic_read(&therm_throt_en))
-		return 0;
-
-	ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/therm:online",
-				thermal_throttle_online,
-				thermal_throttle_offline);
-	return ret < 0 ? ret : 0;
-}
-device_initcall(thermal_throttle_init_device);
-
-#endif /* CONFIG_SYSFS */
-
-static void notify_package_thresholds(__u64 msr_val)
-{
-	bool notify_thres_0 = false;
-	bool notify_thres_1 = false;
-
-	if (!platform_thermal_package_notify)
-		return;
-
-	/* lower threshold check */
-	if (msr_val & THERM_LOG_THRESHOLD0)
-		notify_thres_0 = true;
-	/* higher threshold check */
-	if (msr_val & THERM_LOG_THRESHOLD1)
-		notify_thres_1 = true;
-
-	if (!notify_thres_0 && !notify_thres_1)
-		return;
-
-	if (platform_thermal_package_rate_control &&
-		platform_thermal_package_rate_control()) {
-		/* Rate control is implemented in callback */
-		platform_thermal_package_notify(msr_val);
-		return;
-	}
-
-	/* lower threshold reached */
-	if (notify_thres_0 && thresh_event_valid(PACKAGE_LEVEL, 0))
-		platform_thermal_package_notify(msr_val);
-	/* higher threshold reached */
-	if (notify_thres_1 && thresh_event_valid(PACKAGE_LEVEL, 1))
-		platform_thermal_package_notify(msr_val);
-}
-
-static void notify_thresholds(__u64 msr_val)
-{
-	/* check whether the interrupt handler is defined;
-	 * otherwise simply return
-	 */
-	if (!platform_thermal_notify)
-		return;
-
-	/* lower threshold reached */
-	if ((msr_val & THERM_LOG_THRESHOLD0) &&
-			thresh_event_valid(CORE_LEVEL, 0))
-		platform_thermal_notify(msr_val);
-	/* higher threshold reached */
-	if ((msr_val & THERM_LOG_THRESHOLD1) &&
-			thresh_event_valid(CORE_LEVEL, 1))
-		platform_thermal_notify(msr_val);
-}
-
-/* Thermal transition interrupt handler */
-static void intel_thermal_interrupt(void)
-{
-	__u64 msr_val;
-
-	if (static_cpu_has(X86_FEATURE_HWP))
-		wrmsrl_safe(MSR_HWP_STATUS, 0);
-
-	rdmsrl(MSR_IA32_THERM_STATUS, msr_val);
-
-	/* Check for violation of core thermal thresholds*/
-	notify_thresholds(msr_val);
-
-	therm_throt_process(msr_val & THERM_STATUS_PROCHOT,
-			    THERMAL_THROTTLING_EVENT,
-			    CORE_LEVEL);
-
-	if (this_cpu_has(X86_FEATURE_PLN) && int_pln_enable)
-		therm_throt_process(msr_val & THERM_STATUS_POWER_LIMIT,
-					POWER_LIMIT_EVENT,
-					CORE_LEVEL);
-
-	if (this_cpu_has(X86_FEATURE_PTS)) {
-		rdmsrl(MSR_IA32_PACKAGE_THERM_STATUS, msr_val);
-		/* check violations of package thermal thresholds */
-		notify_package_thresholds(msr_val);
-		therm_throt_process(msr_val & PACKAGE_THERM_STATUS_PROCHOT,
-					THERMAL_THROTTLING_EVENT,
-					PACKAGE_LEVEL);
-		if (this_cpu_has(X86_FEATURE_PLN) && int_pln_enable)
-			therm_throt_process(msr_val &
-					PACKAGE_THERM_STATUS_POWER_LIMIT,
-					POWER_LIMIT_EVENT,
-					PACKAGE_LEVEL);
-	}
-}
-
-static void unexpected_thermal_interrupt(void)
-{
-	pr_err("CPU%d: Unexpected LVT thermal interrupt!\n",
-		smp_processor_id());
-}
-
-static void (*smp_thermal_vector)(void) = unexpected_thermal_interrupt;
-
-asmlinkage __visible void __irq_entry smp_thermal_interrupt(struct pt_regs *r)
-{
-	entering_irq();
-	trace_thermal_apic_entry(THERMAL_APIC_VECTOR);
-	inc_irq_stat(irq_thermal_count);
-	smp_thermal_vector();
-	trace_thermal_apic_exit(THERMAL_APIC_VECTOR);
-	exiting_ack_irq();
-}
-
-/* Thermal monitoring depends on APIC, ACPI and clock modulation */
-static int intel_thermal_supported(struct cpuinfo_x86 *c)
-{
-	if (!boot_cpu_has(X86_FEATURE_APIC))
-		return 0;
-	if (!cpu_has(c, X86_FEATURE_ACPI) || !cpu_has(c, X86_FEATURE_ACC))
-		return 0;
-	return 1;
-}
-
-void __init mcheck_intel_therm_init(void)
-{
-	/*
-	 * This function is only called on boot CPU. Save the init thermal
-	 * LVT value on BSP and use that value to restore APs' thermal LVT
-	 * entry BIOS programmed later
-	 */
-	if (intel_thermal_supported(&boot_cpu_data))
-		lvtthmr_init = apic_read(APIC_LVTTHMR);
-}
-
-void intel_init_thermal(struct cpuinfo_x86 *c)
-{
-	unsigned int cpu = smp_processor_id();
-	int tm2 = 0;
-	u32 l, h;
-
-	if (!intel_thermal_supported(c))
-		return;
-
-	/*
-	 * First check if its enabled already, in which case there might
-	 * be some SMM goo which handles it, so we can't even put a handler
-	 * since it might be delivered via SMI already:
-	 */
-	rdmsr(MSR_IA32_MISC_ENABLE, l, h);
-
-	h = lvtthmr_init;
-	/*
-	 * The initial value of thermal LVT entries on all APs always reads
-	 * 0x10000 because APs are woken up by BSP issuing INIT-SIPI-SIPI
-	 * sequence to them and LVT registers are reset to 0s except for
-	 * the mask bits which are set to 1s when APs receive INIT IPI.
-	 * If BIOS takes over the thermal interrupt and sets its interrupt
-	 * delivery mode to SMI (not fixed), it restores the value that the
-	 * BIOS has programmed on AP based on BSP's info we saved since BIOS
-	 * is always setting the same value for all threads/cores.
-	 */
-	if ((h & APIC_DM_FIXED_MASK) != APIC_DM_FIXED)
-		apic_write(APIC_LVTTHMR, lvtthmr_init);
-
-
-	if ((l & MSR_IA32_MISC_ENABLE_TM1) && (h & APIC_DM_SMI)) {
-		if (system_state == SYSTEM_BOOTING)
-			pr_debug("CPU%d: Thermal monitoring handled by SMI\n", cpu);
-		return;
-	}
-
-	/* early Pentium M models use different method for enabling TM2 */
-	if (cpu_has(c, X86_FEATURE_TM2)) {
-		if (c->x86 == 6 && (c->x86_model == 9 || c->x86_model == 13)) {
-			rdmsr(MSR_THERM2_CTL, l, h);
-			if (l & MSR_THERM2_CTL_TM_SELECT)
-				tm2 = 1;
-		} else if (l & MSR_IA32_MISC_ENABLE_TM2)
-			tm2 = 1;
-	}
-
-	/* We'll mask the thermal vector in the lapic till we're ready: */
-	h = THERMAL_APIC_VECTOR | APIC_DM_FIXED | APIC_LVT_MASKED;
-	apic_write(APIC_LVTTHMR, h);
-
-	rdmsr(MSR_IA32_THERM_INTERRUPT, l, h);
-	if (cpu_has(c, X86_FEATURE_PLN) && !int_pln_enable)
-		wrmsr(MSR_IA32_THERM_INTERRUPT,
-			(l | (THERM_INT_LOW_ENABLE
-			| THERM_INT_HIGH_ENABLE)) & ~THERM_INT_PLN_ENABLE, h);
-	else if (cpu_has(c, X86_FEATURE_PLN) && int_pln_enable)
-		wrmsr(MSR_IA32_THERM_INTERRUPT,
-			l | (THERM_INT_LOW_ENABLE
-			| THERM_INT_HIGH_ENABLE | THERM_INT_PLN_ENABLE), h);
-	else
-		wrmsr(MSR_IA32_THERM_INTERRUPT,
-		      l | (THERM_INT_LOW_ENABLE | THERM_INT_HIGH_ENABLE), h);
-
-	if (cpu_has(c, X86_FEATURE_PTS)) {
-		rdmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT, l, h);
-		if (cpu_has(c, X86_FEATURE_PLN) && !int_pln_enable)
-			wrmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT,
-				(l | (PACKAGE_THERM_INT_LOW_ENABLE
-				| PACKAGE_THERM_INT_HIGH_ENABLE))
-				& ~PACKAGE_THERM_INT_PLN_ENABLE, h);
-		else if (cpu_has(c, X86_FEATURE_PLN) && int_pln_enable)
-			wrmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT,
-				l | (PACKAGE_THERM_INT_LOW_ENABLE
-				| PACKAGE_THERM_INT_HIGH_ENABLE
-				| PACKAGE_THERM_INT_PLN_ENABLE), h);
-		else
-			wrmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT,
-			      l | (PACKAGE_THERM_INT_LOW_ENABLE
-				| PACKAGE_THERM_INT_HIGH_ENABLE), h);
-	}
-
-	smp_thermal_vector = intel_thermal_interrupt;
-
-	rdmsr(MSR_IA32_MISC_ENABLE, l, h);
-	wrmsr(MSR_IA32_MISC_ENABLE, l | MSR_IA32_MISC_ENABLE_TM1, h);
-
-	/* Unmask the thermal vector: */
-	l = apic_read(APIC_LVTTHMR);
-	apic_write(APIC_LVTTHMR, l & ~APIC_LVT_MASKED);
-
-	pr_info_once("CPU0: Thermal monitoring enabled (%s)\n",
-		      tm2 ? "TM2" : "TM1");
-
-	/* enable thermal throttle processing */
-	atomic_set(&therm_throt_en, 1);
-}