23 files changed, 143 insertions, 65 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index d315d86844e4..469be6844703 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -10,6 +10,7 @@
 
 #include <linux/errno.h>
 #include <linux/ioport.h>	/* for struct resource */
+#include <linux/irqdomain.h>
 #include <linux/resource_ext.h>
 #include <linux/device.h>
 #include <linux/property.h>
@@ -314,6 +315,12 @@ int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi);
 void acpi_set_irq_model(enum acpi_irq_model_id model,
 			struct fwnode_handle *fwnode);
 
+struct irq_domain *acpi_irq_create_hierarchy(unsigned int flags,
+					     unsigned int size,
+					     struct fwnode_handle *fwnode,
+					     const struct irq_domain_ops *ops,
+					     void *host_data);
+
 #ifdef CONFIG_X86_IO_APIC
 extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity);
 #else
@@ -1303,6 +1310,7 @@ static inline int lpit_read_residency_count_address(u64 *address)
 #ifdef CONFIG_ACPI_PPTT
 int find_acpi_cpu_topology(unsigned int cpu, int level);
 int find_acpi_cpu_topology_package(unsigned int cpu);
+int find_acpi_cpu_topology_hetero_id(unsigned int cpu);
 int find_acpi_cpu_cache_topology(unsigned int cpu, int level);
 #else
 static inline int find_acpi_cpu_topology(unsigned int cpu, int level)
@@ -1313,6 +1321,10 @@ static inline int find_acpi_cpu_topology_package(unsigned int cpu)
 {
 	return -EINVAL;
 }
+static inline int find_acpi_cpu_topology_hetero_id(unsigned int cpu)
+{
+	return -EINVAL;
+}
 static inline int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
 {
 	return -EINVAL;
diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h
index 70e19bc6cc9f..46b92cd61d0c 100644
--- a/include/linux/cacheinfo.h
+++ b/include/linux/cacheinfo.h
@@ -17,6 +17,8 @@ enum cache_type {
 	CACHE_TYPE_UNIFIED = BIT(2),
 };
 
+extern unsigned int coherency_max_size;
+
 /**
  * struct cacheinfo - represent a cache leaf node
  * @id: This cache's id. It is unique among caches with the same (type, level).
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 5c6062206760..87c211adf49e 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -116,10 +116,10 @@ enum cpuhp_state {
 	CPUHP_AP_PERF_ARM_ACPI_STARTING,
 	CPUHP_AP_PERF_ARM_STARTING,
 	CPUHP_AP_ARM_L2X0_STARTING,
+	CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
 	CPUHP_AP_ARM_ARCH_TIMER_STARTING,
 	CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
 	CPUHP_AP_JCORE_TIMER_STARTING,
-	CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
 	CPUHP_AP_ARM_TWD_STARTING,
 	CPUHP_AP_QCOM_TIMER_STARTING,
 	CPUHP_AP_TEGRA_TIMER_STARTING,
diff --git a/include/linux/device.h b/include/linux/device.h
index 848fc71c6ba6..4a295e324ac5 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -704,7 +704,8 @@ extern unsigned long devm_get_free_pages(struct device *dev,
 					 gfp_t gfp_mask, unsigned int order);
 extern void devm_free_pages(struct device *dev, unsigned long addr);
 
-void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res);
+void __iomem *devm_ioremap_resource(struct device *dev,
+				    const struct resource *res);
 
 void __iomem *devm_of_iomap(struct device *dev,
 			    struct device_node *node, int index,
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 2e8957eac4d4..4971100a8cab 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -12,8 +12,8 @@
 #ifndef _LINUX_HRTIMER_H
 #define _LINUX_HRTIMER_H
 
+#include <linux/hrtimer_defs.h>
 #include <linux/rbtree.h>
-#include <linux/ktime.h>
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/percpu.h>
@@ -298,26 +298,12 @@ struct clock_event_device;
 
 extern void hrtimer_interrupt(struct clock_event_device *dev);
 
-/*
- * The resolution of the clocks. The resolution value is returned in
- * the clock_getres() system call to give application programmers an
- * idea of the (in)accuracy of timers. Timer values are rounded up to
- * this resolution values.
- */
-# define HIGH_RES_NSEC		1
-# define KTIME_HIGH_RES		(HIGH_RES_NSEC)
-# define MONOTONIC_RES_NSEC	HIGH_RES_NSEC
-# define KTIME_MONOTONIC_RES	KTIME_HIGH_RES
-
 extern void clock_was_set_delayed(void);
 
 extern unsigned int hrtimer_resolution;
 
 #else
 
-# define MONOTONIC_RES_NSEC	LOW_RES_NSEC
-# define KTIME_MONOTONIC_RES	KTIME_LOW_RES
-
 #define hrtimer_resolution	(unsigned int)LOW_RES_NSEC
 
 static inline void clock_was_set_delayed(void) { }
diff --git a/include/linux/hrtimer_defs.h b/include/linux/hrtimer_defs.h
new file mode 100644
index 000000000000..2d3e3c5fb946
--- /dev/null
+++ b/include/linux/hrtimer_defs.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_HRTIMER_DEFS_H
+#define _LINUX_HRTIMER_DEFS_H
+
+#include <linux/ktime.h>
+
+#ifdef CONFIG_HIGH_RES_TIMERS
+
+/*
+ * The resolution of the clocks. The resolution value is returned in
+ * the clock_getres() system call to give application programmers an
+ * idea of the (in)accuracy of timers. Timer values are rounded up to
+ * this resolution values.
+ */
+# define HIGH_RES_NSEC		1
+# define KTIME_HIGH_RES		(HIGH_RES_NSEC)
+# define MONOTONIC_RES_NSEC	HIGH_RES_NSEC
+# define KTIME_MONOTONIC_RES	KTIME_HIGH_RES
+
+#else
+
+# define MONOTONIC_RES_NSEC	LOW_RES_NSEC
+# define KTIME_MONOTONIC_RES	KTIME_LOW_RES
+
+#endif
+
+#endif
diff --git a/include/linux/irqchip/arm-gic-common.h b/include/linux/irqchip/arm-gic-common.h
index 626283858563..b9850f5f1906 100644
--- a/include/linux/irqchip/arm-gic-common.h
+++ b/include/linux/irqchip/arm-gic-common.h
@@ -36,4 +36,9 @@ struct gic_kvm_info {
 
 const struct gic_kvm_info *gic_get_kvm_info(void);
 
+struct irq_domain;
+struct fwnode_handle;
+int gicv2m_init(struct fwnode_handle *parent_handle,
+		struct irq_domain *parent);
+
 #endif /* __LINUX_IRQCHIP_ARM_GIC_COMMON_H */
diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h
index 316087da1d09..5686711b0f40 100644
--- a/include/linux/irqchip/arm-gic.h
+++ b/include/linux/irqchip/arm-gic.h
@@ -157,9 +157,6 @@ int gic_of_init_child(struct device *dev, struct gic_chip_data **gic, int irq);
  */
 void gic_init(void __iomem *dist , void __iomem *cpu);
 
-int gicv2m_init(struct fwnode_handle *parent_handle,
-		struct irq_domain *parent);
-
 void gic_send_sgi(unsigned int cpu_id, unsigned int irq);
 int gic_get_cpu_id(unsigned int cpu);
 void gic_migrate_target(unsigned int new_cpu_id);
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 74b1ee9027f5..0c9bc231107f 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -93,7 +93,8 @@
 #define DIV_ROUND_DOWN_ULL(ll, d) \
 	({ unsigned long long _tmp = (ll); do_div(_tmp, d); _tmp; })
 
-#define DIV_ROUND_UP_ULL(ll, d)		DIV_ROUND_DOWN_ULL((ll) + (d) - 1, (d))
+#define DIV_ROUND_UP_ULL(ll, d) \
+	DIV_ROUND_DOWN_ULL((unsigned long long)(ll) + (d) - 1, (d))
 
 #if BITS_PER_LONG == 32
 # define DIV_ROUND_UP_SECTOR_T(ll,d) DIV_ROUND_UP_ULL(ll, d)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 9ec3544baee2..fe0b29bf2df7 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -333,19 +333,6 @@ static inline struct page *grab_cache_page_nowait(struct address_space *mapping,
 			mapping_gfp_mask(mapping));
 }
 
-static inline struct page *find_subpage(struct page *page, pgoff_t offset)
-{
-	unsigned long mask;
-
-	if (PageHuge(page))
-		return page;
-
-	VM_BUG_ON_PAGE(PageTail(page), page);
-
-	mask = (1UL << compound_order(page)) - 1;
-	return page + (offset & mask);
-}
-
 struct page *find_get_entry(struct address_space *mapping, pgoff_t offset);
 struct page *find_lock_entry(struct address_space *mapping, pgoff_t offset);
 unsigned find_get_entries(struct address_space *mapping, pgoff_t start,
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index a9b0ee408fbd..71f525a35ac2 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -171,4 +171,6 @@ void armpmu_free_irq(int irq, int cpu);
 
 #endif /* CONFIG_ARM_PMU */
 
+#define ARMV8_SPE_PDEV_NAME "arm,spe-v1"
+
 #endif /* __ARM_PMU_H__ */
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 0ab99c7b652d..2bca72f3028b 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -241,6 +241,7 @@ struct perf_event;
 #define PERF_PMU_CAP_NO_INTERRUPT		0x01
 #define PERF_PMU_CAP_NO_NMI			0x02
 #define PERF_PMU_CAP_AUX_NO_SG			0x04
+#define PERF_PMU_CAP_EXTENDED_REGS		0x08
 #define PERF_PMU_CAP_EXCLUSIVE			0x10
 #define PERF_PMU_CAP_ITRACE			0x20
 #define PERF_PMU_CAP_HETEROGENEOUS_CPUS		0x40
diff --git a/include/linux/perf_regs.h b/include/linux/perf_regs.h
index 476747456bca..2d12e97d5e7b 100644
--- a/include/linux/perf_regs.h
+++ b/include/linux/perf_regs.h
@@ -11,6 +11,11 @@ struct perf_regs {
 
 #ifdef CONFIG_HAVE_PERF_REGS
 #include <asm/perf_regs.h>
+
+#ifndef PERF_REG_EXTENDED_MASK
+#define PERF_REG_EXTENDED_MASK	0
+#endif
+
 u64 perf_reg_value(struct pt_regs *regs, int idx);
 int perf_reg_validate(u64 mask);
 u64 perf_reg_abi(struct task_struct *task);
@@ -18,6 +23,9 @@ void perf_get_regs_user(struct perf_regs *regs_user,
 			struct pt_regs *regs,
 			struct pt_regs *regs_user_copy);
 #else
+
+#define PERF_REG_EXTENDED_MASK	0
+
 static inline u64 perf_reg_value(struct pt_regs *regs, int idx)
 {
 	return 0;
diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h
index 7bb77850c65a..3c202a11a79e 100644
--- a/include/linux/pfn_t.h
+++ b/include/linux/pfn_t.h
@@ -68,7 +68,7 @@ static inline phys_addr_t pfn_t_to_phys(pfn_t pfn)
 
 static inline void *pfn_t_to_virt(pfn_t pfn)
 {
-	if (pfn_t_has_page(pfn))
+	if (pfn_t_has_page(pfn) && !is_device_private_page(pfn_t_to_page(pfn)))
 		return __va(pfn_t_to_phys(pfn));
 	return NULL;
 }
diff --git a/include/linux/processor.h b/include/linux/processor.h
index dbc952eec869..dc78bdc7079a 100644
--- a/include/linux/processor.h
+++ b/include/linux/processor.h
@@ -32,15 +32,6 @@
 #define spin_cpu_relax() cpu_relax()
 #endif
 
-/*
- * spin_cpu_yield may be called to yield (undirected) to the hypervisor if
- * necessary. This should be used if the wait is expected to take longer
- * than context switch overhead, but we can't sleep or do a directed yield.
- */
-#ifndef spin_cpu_yield
-#define spin_cpu_yield() cpu_relax_yield()
-#endif
-
 #ifndef spin_end
 #define spin_end()
 #endif
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 942a44c1b8eb..76adce49b5ad 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1518,10 +1518,6 @@ static inline int set_cpus_allowed_ptr(struct task_struct *p, const struct cpuma
 }
 #endif
 
-#ifndef cpu_relax_yield
-#define cpu_relax_yield() cpu_relax()
-#endif
-
 extern int yield_to(struct task_struct *p, bool preempt);
 extern void set_user_nice(struct task_struct *p, long nice);
 extern int task_prio(const struct task_struct *p);
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 9702016734b1..78c2bb376954 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -276,7 +276,7 @@ extern int sigprocmask(int, sigset_t *, sigset_t *);
 extern int set_user_sigmask(const sigset_t __user *usigmask, sigset_t *set,
 	sigset_t *oldset, size_t sigsetsize);
 extern void restore_user_sigmask(const void __user *usigmask,
-				 sigset_t *sigsaved);
+				 sigset_t *sigsaved, bool interrupted);
 extern void set_current_blocked(sigset_t *);
 extern void __set_current_blocked(const sigset_t *);
 extern int show_unhandled_signals;
diff --git a/include/linux/smp.h b/include/linux/smp.h
index a56f08ff3097..bb8b451ab01f 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -35,7 +35,7 @@ int smp_call_function_single(int cpuid, smp_call_func_t func, void *info,
 /*
  * Call a function on all processors
  */
-int on_each_cpu(smp_call_func_t func, void *info, int wait);
+void on_each_cpu(smp_call_func_t func, void *info, int wait);
 
 /*
  * Call a function on processors specified by mask, which might include
@@ -101,7 +101,7 @@ extern void smp_cpus_done(unsigned int max_cpus);
 /*
  * Call a function on all other processors
  */
-int smp_call_function(smp_call_func_t func, void *info, int wait);
+void smp_call_function(smp_call_func_t func, void *info, int wait);
 void smp_call_function_many(const struct cpumask *mask,
 			    smp_call_func_t func, void *info, bool wait);
 
@@ -144,9 +144,8 @@ static inline void smp_send_stop(void) { }
  *	These macros fold the SMP functionality into a single CPU system
  */
 #define raw_smp_processor_id()			0
-static inline int up_smp_call_function(smp_call_func_t func, void *info)
+static inline void up_smp_call_function(smp_call_func_t func, void *info)
 {
-	return 0;
 }
 #define smp_call_function(func, info, wait) \
 			(up_smp_call_function(func, info))
diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h
index 6d3635c86dbe..f9a0c6189852 100644
--- a/include/linux/stop_machine.h
+++ b/include/linux/stop_machine.h
@@ -36,6 +36,7 @@ int stop_cpus(const struct cpumask *cpumask, cpu_stop_fn_t fn, void *arg);
 int try_stop_cpus(const struct cpumask *cpumask, cpu_stop_fn_t fn, void *arg);
 void stop_machine_park(int cpu);
 void stop_machine_unpark(int cpu);
+void stop_machine_yield(const struct cpumask *cpumask);
 
 #else	/* CONFIG_SMP */
 
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 8594001e8be8..f0d262ad7b78 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -209,8 +209,9 @@ extern int suspend_valid_only_mem(suspend_state_t state);
 
 extern unsigned int pm_suspend_global_flags;
 
-#define PM_SUSPEND_FLAG_FW_SUSPEND	(1 << 0)
-#define PM_SUSPEND_FLAG_FW_RESUME	(1 << 1)
+#define PM_SUSPEND_FLAG_FW_SUSPEND	BIT(0)
+#define PM_SUSPEND_FLAG_FW_RESUME	BIT(1)
+#define PM_SUSPEND_FLAG_NO_PLATFORM	BIT(2)
 
 static inline void pm_suspend_clear_flags(void)
 {
@@ -227,6 +228,11 @@ static inline void pm_set_resume_via_firmware(void)
 	pm_suspend_global_flags |= PM_SUSPEND_FLAG_FW_RESUME;
 }
 
+static inline void pm_set_suspend_no_platform(void)
+{
+	pm_suspend_global_flags |= PM_SUSPEND_FLAG_NO_PLATFORM;
+}
+
 /**
  * pm_suspend_via_firmware - Check if platform firmware will suspend the system.
  *
@@ -268,6 +274,22 @@ static inline bool pm_resume_via_firmware(void)
 	return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_FW_RESUME);
 }
 
+/**
+ * pm_suspend_no_platform - Check if platform may change device power states.
+ *
+ * To be called during system-wide power management transitions to sleep states
+ * or during the subsequent system-wide transitions back to the working state.
+ *
+ * Return 'true' if the power states of devices remain under full control of the
+ * kernel throughout the system-wide suspend and resume cycle in progress (that
+ * is, if a device is put into a certain power state during suspend, it can be
+ * expected to remain in that state during resume).
+ */
+static inline bool pm_suspend_no_platform(void)
+{
+	return !!(pm_suspend_global_flags & PM_SUSPEND_FLAG_NO_PLATFORM);
+}
+
 /* Suspend-to-idle state machnine. */
 enum s2idle_states {
 	S2IDLE_STATE_NONE,      /* Not suspended/suspending. */
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index a8ab0f143ac4..b27e2ffa96c1 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -113,6 +113,34 @@ static inline ktime_t ktime_get_coarse_clocktai(void)
 	return ktime_get_coarse_with_offset(TK_OFFS_TAI);
 }
 
+static inline ktime_t ktime_get_coarse(void)
+{
+	struct timespec64 ts;
+
+	ktime_get_coarse_ts64(&ts);
+	return timespec64_to_ktime(ts);
+}
+
+static inline u64 ktime_get_coarse_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse());
+}
+
+static inline u64 ktime_get_coarse_real_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_real());
+}
+
+static inline u64 ktime_get_coarse_boottime_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_boottime());
+}
+
+static inline u64 ktime_get_coarse_clocktai_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_clocktai());
+}
+
 /**
  * ktime_mono_to_real - Convert monotonic time to clock realtime
  */
@@ -131,12 +159,12 @@ static inline u64 ktime_get_real_ns(void)
 	return ktime_to_ns(ktime_get_real());
 }
 
-static inline u64 ktime_get_boot_ns(void)
+static inline u64 ktime_get_boottime_ns(void)
 {
 	return ktime_to_ns(ktime_get_boottime());
 }
 
-static inline u64 ktime_get_tai_ns(void)
+static inline u64 ktime_get_clocktai_ns(void)
 {
 	return ktime_to_ns(ktime_get_clocktai());
 }
diff --git a/include/linux/timer.h b/include/linux/timer.h
index 7b066fd38248..282e4f2a532a 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -36,19 +36,30 @@ struct timer_list {
 #define __TIMER_LOCKDEP_MAP_INITIALIZER(_kn)
 #endif
 
-/*
- * A deferrable timer will work normally when the system is busy, but
- * will not cause a CPU to come out of idle just to service it; instead,
- * the timer will be serviced when the CPU eventually wakes up with a
- * subsequent non-deferrable timer.
+/**
+ * @TIMER_DEFERRABLE: A deferrable timer will work normally when the
+ * system is busy, but will not cause a CPU to come out of idle just
+ * to service it; instead, the timer will be serviced when the CPU
+ * eventually wakes up with a subsequent non-deferrable timer.
  *
- * An irqsafe timer is executed with IRQ disabled and it's safe to wait for
- * the completion of the running instance from IRQ handlers, for example,
- * by calling del_timer_sync().
+ * @TIMER_IRQSAFE: An irqsafe timer is executed with IRQ disabled and
+ * it's safe to wait for the completion of the running instance from
+ * IRQ handlers, for example, by calling del_timer_sync().
  *
  * Note: The irq disabled callback execution is a special case for
  * workqueue locking issues. It's not meant for executing random crap
  * with interrupts disabled. Abuse is monitored!
+ *
+ * @TIMER_PINNED: A pinned timer will not be affected by any timer
+ * placement heuristics (like, NOHZ) and will always expire on the CPU
+ * on which the timer was enqueued.
+ *
+ * Note: Because enqueuing of timers can migrate the timer from one
+ * CPU to another, pinned timers are not guaranteed to stay on the
+ * initialy selected CPU.  They move to the CPU on which the enqueue
+ * function is invoked via mod_timer() or add_timer().  If the timer
+ * should be placed on a particular CPU, then add_timer_on() has to be
+ * used.
  */
 #define TIMER_CPUMASK		0x0003FFFF
 #define TIMER_MIGRATING		0x00040000
diff --git a/include/linux/xarray.h b/include/linux/xarray.h
index 0e01e6129145..5921599b6dc4 100644
--- a/include/linux/xarray.h
+++ b/include/linux/xarray.h
@@ -265,6 +265,7 @@ enum xa_lock_type {
 #define XA_FLAGS_TRACK_FREE	((__force gfp_t)4U)
 #define XA_FLAGS_ZERO_BUSY	((__force gfp_t)8U)
 #define XA_FLAGS_ALLOC_WRAPPED	((__force gfp_t)16U)
+#define XA_FLAGS_ACCOUNT	((__force gfp_t)32U)
 #define XA_FLAGS_MARK(mark)	((__force gfp_t)((1U << __GFP_BITS_SHIFT) << \
 						(__force unsigned)(mark)))