Merge remote-tracking branch 'drm-intel/topic/core-for-CI' into drm-tip

Author: zehortigoza

arch/x86/kernel/cpu/mce/therm_throt.c

@@ -284,10 +284,10 @@ static void __maybe_unused throttle_active_work(struct work_struct *work)
 	avg /= ARRAY_SIZE(state->temp_samples);
 
 	if (state->average > avg) {
-		pr_warn("CPU%d: %s temperature is above threshold, cpu clock is throttled (total events = %lu)\n",
-			this_cpu,
-			state->level == CORE_LEVEL ? "Core" : "Package",
-			state->count);
+		pr_notice("CPU%d: %s temperature is above threshold, cpu clock is throttled (total events = %lu)\n",
+			  this_cpu,
+			  state->level == CORE_LEVEL ? "Core" : "Package",
+			  state->count);
 		state->rate_control_active = true;
 	}
 

drivers/ata/libata-core.c

@@ -2049,7 +2049,7 @@ static bool ata_identify_page_supported(struct ata_device *dev, u8 page)
 	unsigned int err, i;
 
 	if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE)) {
-		ata_dev_warn(dev, "ATA Identify Device Log not supported\n");
+		ata_dev_notice(dev, "ATA Identify Device Log not supported\n");
 		return false;
 	}
 
@@ -2123,7 +2123,7 @@ static void ata_dev_config_ncq_send_recv(struct ata_device *dev)
 	unsigned int err_mask;
 
 	if (!ata_log_supported(dev, ATA_LOG_NCQ_SEND_RECV)) {
-		ata_dev_warn(dev, "NCQ Send/Recv Log not supported\n");
+		ata_dev_notice(dev, "NCQ Send/Recv Log not supported\n");
 		return;
 	}
 	err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_SEND_RECV,
@@ -2152,8 +2152,8 @@ static void ata_dev_config_ncq_non_data(struct ata_device *dev)
 	unsigned int err_mask;
 
 	if (!ata_log_supported(dev, ATA_LOG_NCQ_NON_DATA)) {
-		ata_dev_warn(dev,
-			     "NCQ Send/Recv Log not supported\n");
+		ata_dev_notice(dev,
+			       "NCQ Send/Recv Log not supported\n");
 		return;
 	}
 	err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_NON_DATA,
@@ -2485,14 +2485,14 @@ int ata_dev_configure(struct ata_device *dev)
 		if (ata_id_is_cfa(id)) {
 			/* CPRM may make this media unusable */
 			if (id[ATA_ID_CFA_KEY_MGMT] & 1)
-				ata_dev_warn(dev,
+				ata_dev_notice(dev,
 	"supports DRM functions and may not be fully accessible\n");
 			snprintf(revbuf, 7, "CFA");
 		} else {
 			snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id));
 			/* Warn the user if the device has TPM extensions */
 			if (ata_id_has_tpm(id))
-				ata_dev_warn(dev,
+				ata_dev_notice(dev,
 	"supports DRM functions and may not be fully accessible\n");
 		}
 
@@ -2708,8 +2708,8 @@ int ata_dev_configure(struct ata_device *dev)
 	}
 
 	if ((dev->horkage & ATA_HORKAGE_FIRMWARE_WARN) && print_info) {
-		ata_dev_warn(dev, "WARNING: device requires firmware update to be fully functional\n");
-		ata_dev_warn(dev, "         contact the vendor or visit http://ata.wiki.kernel.org\n");
+		ata_dev_notice(dev, "WARNING: device requires firmware update to be fully functional\n");
+		ata_dev_notice(dev, "         contact the vendor or visit http://ata.wiki.kernel.org\n");
 	}
 
 	return 0;

drivers/gpu/drm/i915/Kconfig.debug

@@ -19,6 +19,14 @@ config DRM_I915_WERROR
 config DRM_I915_DEBUG
 	bool "Enable additional driver debugging"
 	depends on DRM_I915
+	select PCI_MSI # ... for iommu enabled by default
+	select IOMMU_API
+	select IOMMU_IOVA
+	select IOMMU_SUPPORT
+	select NEED_DMA_MAP_STATE
+	select DMAR_TABLE
+	select INTEL_IOMMU
+	select INTEL_IOMMU_DEFAULT_ON
 	select DEBUG_FS
 	select PREEMPT_COUNT
 	select I2C_CHARDEV
@@ -35,6 +43,7 @@ config DRM_I915_DEBUG
 	select DRM_I915_SELFTEST
 	select DRM_I915_DEBUG_RUNTIME_PM
 	select DRM_I915_DEBUG_MMIO
+	select BROKEN # for prototype uAPI
 	default n
 	help
 	  Choose this option to turn on extra driver debugging that may affect

drivers/iommu/intel-iommu.c

@@ -465,8 +465,6 @@ static int __init intel_iommu_setup(char *str)
 			no_platform_optin = 1;
 			pr_info("IOMMU disabled\n");
 		} else if (!strncmp(str, "igfx_off", 8)) {
-			dmar_map_gfx = 0;
-			pr_info("Disable GFX device mapping\n");
 		} else if (!strncmp(str, "forcedac", 8)) {
 			pr_info("Forcing DAC for PCI devices\n");
 			dmar_forcedac = 1;

drivers/pci/msi.c

@@ -1071,8 +1071,10 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
 	if (maxvec < minvec)
 		return -ERANGE;
 
-	if (WARN_ON_ONCE(dev->msi_enabled))
+	if (dev->msi_enabled) {
+		pci_info(dev, "can't enable MSI, already enabled\n");
 		return -EINVAL;
+	}
 
 	nvec = pci_msi_vec_count(dev);
 	if (nvec < 0)

drivers/usb/core/usb-acpi.c

@@ -12,6 +12,7 @@
 #include <linux/acpi.h>
 #include <linux/pci.h>
 #include <linux/usb/hcd.h>
+#include <linux/dmi.h>
 
 #include "hub.h"
 
@@ -81,6 +82,20 @@ int usb_acpi_set_power_state(struct usb_device *hdev, int index, bool enable)
 }
 EXPORT_SYMBOL_GPL(usb_acpi_set_power_state);
 
+static const struct dmi_system_id intel_icl_broken_acpi[] = {
+	{
+		.ident = "ICL RVP",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Ice Lake Client Platform"),
+		},
+	},
+
+	{ }
+};
+
+static bool acpi_connection_type_broken;
+
 static enum usb_port_connect_type usb_acpi_get_connect_type(acpi_handle handle,
 		struct acpi_pld_info *pld)
 {
@@ -89,6 +104,10 @@ static enum usb_port_connect_type usb_acpi_get_connect_type(acpi_handle handle,
 	union acpi_object *upc = NULL;
 	acpi_status status;
 
+	/* Work around unknown ACPI instruction error on ICL RVP BIOSes. */
+	if (acpi_connection_type_broken)
+		return USB_PORT_CONNECT_TYPE_UNKNOWN;
+
 	/*
 	 * According to 9.14 in ACPI Spec 6.2. _PLD indicates whether usb port
 	 * is user visible and _UPC indicates whether it is connectable. If
@@ -273,6 +292,11 @@ static struct acpi_bus_type usb_acpi_bus = {
 
 int usb_acpi_register(void)
 {
+	if (dmi_check_system(intel_icl_broken_acpi)) {
+		pr_info("USB ACPI connection type broken.\n");
+		acpi_connection_type_broken = true;
+	}
+
 	return register_acpi_bus_type(&usb_acpi_bus);
 }
 

include/linux/lockdep.h

@@ -292,8 +292,8 @@ struct held_lock {
 	unsigned int read:2;        /* see lock_acquire() comment */
 	unsigned int check:1;       /* see lock_acquire() comment */
 	unsigned int hardirqs_off:1;
-	unsigned int references:12;					/* 32 bits */
-	unsigned int pin_count;
+	unsigned int pin_count:12;					/* 32 bits */
+	unsigned int references;
 };
 
 /*

include/uapi/linux/perf_event.h

@@ -145,10 +145,10 @@ enum perf_event_sample_format {
 	PERF_SAMPLE_CGROUP			= 1U << 21,
 
 	PERF_SAMPLE_MAX = 1U << 22,		/* non-ABI */
-
-	__PERF_SAMPLE_CALLCHAIN_EARLY		= 1ULL << 63, /* non-ABI; internal use */
 };
 
+#define __PERF_SAMPLE_CALLCHAIN_EARLY	(1ULL << 63) /* non-ABI; internal use */
+
 /*
  * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set
  *

kernel/events/core.c

@@ -5102,20 +5102,16 @@ static int __perf_read_group_add(struct perf_event *leader,
 }
 
 static int perf_read_group(struct perf_event *event,
-				   u64 read_format, char __user *buf)
+			   u64 read_format, char __user *buf,
+			   u64 *values)
 {
 	struct perf_event *leader = event->group_leader, *child;
 	struct perf_event_context *ctx = leader->ctx;
 	int ret;
-	u64 *values;
 
 	lockdep_assert_held(&ctx->mutex);
 
-	values = kzalloc(event->read_size, GFP_KERNEL);
-	if (!values)
-		return -ENOMEM;
-
-	values[0] = 1 + leader->nr_siblings;
+	*values = 1 + leader->nr_siblings;
 
 	/*
 	 * By locking the child_mutex of the leader we effectively
@@ -5133,25 +5129,17 @@ static int perf_read_group(struct perf_event *event,
 			goto unlock;
 	}
 
-	mutex_unlock(&leader->child_mutex);
-
 	ret = event->read_size;
-	if (copy_to_user(buf, values, event->read_size))
-		ret = -EFAULT;
-	goto out;
-
 unlock:
 	mutex_unlock(&leader->child_mutex);
-out:
-	kfree(values);
 	return ret;
 }
 
 static int perf_read_one(struct perf_event *event,
-				 u64 read_format, char __user *buf)
+			 u64 read_format, char __user *buf,
+			 u64 *values)
 {
 	u64 enabled, running;
-	u64 values[4];
 	int n = 0;
 
 	values[n++] = __perf_event_read_value(event, &enabled, &running);
@@ -5162,9 +5150,6 @@ static int perf_read_one(struct perf_event *event,
 	if (read_format & PERF_FORMAT_ID)
 		values[n++] = primary_event_id(event);
 
-	if (copy_to_user(buf, values, n * sizeof(u64)))
-		return -EFAULT;
-
 	return n * sizeof(u64);
 }
 
@@ -5185,7 +5170,8 @@ static bool is_event_hup(struct perf_event *event)
  * Read the performance event - simple non blocking version for now
  */
 static ssize_t
-__perf_read(struct perf_event *event, char __user *buf, size_t count)
+__perf_read(struct perf_event *event, char __user *buf,
+	    size_t count, u64 *values)
 {
 	u64 read_format = event->attr.read_format;
 	int ret;
@@ -5203,9 +5189,9 @@ __perf_read(struct perf_event *event, char __user *buf, size_t count)
 
 	WARN_ON_ONCE(event->ctx->parent_ctx);
 	if (read_format & PERF_FORMAT_GROUP)
-		ret = perf_read_group(event, read_format, buf);
+		ret = perf_read_group(event, read_format, buf, values);
 	else
-		ret = perf_read_one(event, read_format, buf);
+		ret = perf_read_one(event, read_format, buf, values);
 
 	return ret;
 }
@@ -5215,16 +5201,31 @@ perf_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
 	struct perf_event *event = file->private_data;
 	struct perf_event_context *ctx;
+	u64 stack_values[8];
+	u64 *values;
 	int ret;
 
 	ret = security_perf_event_read(event);
 	if (ret)
 		return ret;
 
+	if (event->read_size <= sizeof(stack_values))
+		values = memset(stack_values, 0, event->read_size);
+	else
+		values = kzalloc(event->read_size, GFP_KERNEL);
+	if (!values)
+		return -ENOMEM;
+
 	ctx = perf_event_ctx_lock(event);
-	ret = __perf_read(event, buf, count);
+	ret = __perf_read(event, buf, count, values);
 	perf_event_ctx_unlock(event, ctx);
 
+	if (ret > 0 && copy_to_user(buf, values, ret))
+		ret = -EFAULT;
+
+	if (values != stack_values)
+		kfree(values);
+
 	return ret;
 }
 
@@ -10740,7 +10741,8 @@ void perf_pmu_unregister(struct pmu *pmu)
 		device_del(pmu->dev);
 		put_device(pmu->dev);
 	}
-	free_pmu_context(pmu);
+	if (!find_pmu_context(pmu->task_ctx_nr))
+		free_pmu_context(pmu);
 	mutex_unlock(&pmus_lock);
 }
 EXPORT_SYMBOL_GPL(perf_pmu_unregister);

kernel/hung_task.c

@@ -52,6 +52,7 @@ int __read_mostly sysctl_hung_task_warnings = 10;
 
 static int __read_mostly did_panic;
 static bool hung_task_show_lock;
+static bool hung_task_show_state;
 static bool hung_task_call_panic;
 
 static struct task_struct *watchdog_task;
@@ -117,7 +118,10 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout)
 	if (sysctl_hung_task_panic) {
 		console_verbose();
 		hung_task_show_lock = true;
+		hung_task_show_state = true;
 		hung_task_call_panic = true;
+	} else {
+		add_taint(TAINT_WARN, LOCKDEP_STILL_OK);
 	}
 
 	/*
@@ -137,6 +141,7 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout)
 			" disables this message.\n");
 		sched_show_task(t);
 		hung_task_show_lock = true;
+		hung_task_show_state = true;
 	}
 
 	touch_nmi_watchdog();
@@ -184,6 +189,7 @@ static void check_hung_uninterruptible_tasks(unsigned long timeout)
 		return;
 
 	hung_task_show_lock = false;
+	hung_task_show_state = false;
 	rcu_read_lock();
 	for_each_process_thread(g, t) {
 		if (!max_count--)
@@ -201,6 +207,10 @@ static void check_hung_uninterruptible_tasks(unsigned long timeout)
 	rcu_read_unlock();
 	if (hung_task_show_lock)
 		debug_show_all_locks();
+	if (hung_task_show_state) {
+		show_state();
+		show_workqueue_state();
+	}
 	if (hung_task_call_panic) {
 		trigger_all_cpu_backtrace();
 		panic("hung_task: blocked tasks");