diff options
Diffstat (limited to 'include/linux')
35 files changed, 402 insertions, 88 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 64e10746f282..968173ec2726 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -587,7 +587,7 @@ extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, const struct device *dev); -void *acpi_get_match_data(const struct device *dev); +const void *acpi_device_get_match_data(const struct device *dev); extern bool acpi_driver_match_device(struct device *dev, const struct device_driver *drv); int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *); @@ -766,7 +766,7 @@ static inline const struct acpi_device_id *acpi_match_device( return NULL; } -static inline void *acpi_get_match_data(const struct device *dev) +static inline const void *acpi_device_get_match_data(const struct device *dev) { return NULL; } diff --git a/include/linux/bio.h b/include/linux/bio.h index d0eb659fa733..ce547a25e8ae 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -511,6 +511,7 @@ void zero_fill_bio(struct bio *bio); extern struct bio_vec *bvec_alloc(gfp_t, int, unsigned long *, mempool_t *); extern void bvec_free(mempool_t *, struct bio_vec *, unsigned int); extern unsigned int bvec_nr_vecs(unsigned short idx); +extern const char *bio_devname(struct bio *bio, char *buffer); #define bio_set_dev(bio, bdev) \ do { \ @@ -529,9 +530,6 @@ do { \ #define bio_dev(bio) \ disk_devt((bio)->bi_disk) -#define bio_devname(bio, buf) \ - __bdevname(bio_dev(bio), (buf)) - #ifdef CONFIG_BLK_CGROUP int bio_associate_blkcg(struct bio *bio, struct cgroup_subsys_state *blkcg_css); void bio_disassociate_task(struct bio *bio); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 4f3df807cf8f..ed63f3b69c12 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -49,7 +49,7 @@ struct blk_stat_callback; #define BLKDEV_MIN_RQ 4 #define BLKDEV_MAX_RQ 128 /* Default maximum */ -/* Must be consisitent with blk_mq_poll_stats_bkt() */ +/* Must be consistent with blk_mq_poll_stats_bkt() */ #define BLK_MQ_POLL_STATS_BKTS 16 /* diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index d02a4df3f473..d3f264a5b04d 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -27,3 +27,8 @@ #if __has_feature(address_sanitizer) #define __SANITIZE_ADDRESS__ #endif + +/* Clang doesn't have a way to turn it off per-function, yet. */ +#ifdef __noretpoline +#undef __noretpoline +#endif diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 631354acfa72..e2c7f4369eff 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -93,6 +93,10 @@ #define __weak __attribute__((weak)) #define __alias(symbol) __attribute__((alias(#symbol))) +#ifdef RETPOLINE +#define __noretpoline __attribute__((indirect_branch("keep"))) +#endif + /* * it doesn't make sense on ARM (currently the only user of __naked) * to trace naked functions because then mcount is called without @@ -167,8 +171,6 @@ #if GCC_VERSION >= 40100 # define __compiletime_object_size(obj) __builtin_object_size(obj, 0) - -#define __nostackprotector __attribute__((__optimize__("no-stack-protector"))) #endif #if GCC_VERSION >= 40300 @@ -196,6 +198,11 @@ #endif /* __CHECKER__ */ #endif /* GCC_VERSION >= 40300 */ +#if GCC_VERSION >= 40400 +#define __optimize(level) __attribute__((__optimize__(level))) +#define __nostackprotector __optimize("no-stack-protector") +#endif /* GCC_VERSION >= 40400 */ + #if GCC_VERSION >= 40500 #ifndef __CHECKER__ @@ -205,6 +212,15 @@ #endif /* + * calling noreturn functions, __builtin_unreachable() and __builtin_trap() + * confuse the stack allocation in gcc, leading to overly large stack + * frames, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82365 + * + * Adding an empty inline assembly before it works around the problem + */ +#define barrier_before_unreachable() asm volatile("") + +/* * Mark a position in code as unreachable. This can be used to * suppress control flow warnings after asm blocks that transfer * control elsewhere. @@ -214,7 +230,11 @@ * unreleased. Really, we need to have autoconf for the kernel. */ #define unreachable() \ - do { annotate_unreachable(); __builtin_unreachable(); } while (0) + do { \ + annotate_unreachable(); \ + barrier_before_unreachable(); \ + __builtin_unreachable(); \ + } while (0) /* Mark a function definition as prohibited from being cloned. */ #define __noclone __attribute__((__noclone__, __optimize__("no-tracer"))) diff --git a/include/linux/compiler.h b/include/linux/compiler.h index c2cc57a2f508..ab4711c63601 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -86,6 +86,11 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, # define barrier_data(ptr) barrier() #endif +/* workaround for GCC PR82365 if needed */ +#ifndef barrier_before_unreachable +# define barrier_before_unreachable() do { } while (0) +#endif + /* Unreachable code */ #ifdef CONFIG_STACK_VALIDATION /* @@ -277,6 +282,10 @@ unsigned long read_word_at_a_time(const void *addr) #endif /* __ASSEMBLY__ */ +#ifndef __optimize +# define __optimize(level) +#endif + /* Compile time object size, -1 for unknown */ #ifndef __compiletime_object_size # define __compiletime_object_size(obj) -1 diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 871f9e21810c..0b3fc229086c 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -225,7 +225,7 @@ static inline void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, } #endif -#ifdef CONFIG_ARCH_HAS_CPU_RELAX +#if defined(CONFIG_CPU_IDLE) && defined(CONFIG_ARCH_HAS_CPU_RELAX) void cpuidle_poll_state_init(struct cpuidle_driver *drv); #else static inline void cpuidle_poll_state_init(struct cpuidle_driver *drv) {} diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index d4a2a7dcd72d..bf53d893ad02 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -170,6 +170,8 @@ static inline unsigned int cpumask_local_spread(unsigned int i, int node) for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask) #define for_each_cpu_not(cpu, mask) \ for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask) +#define for_each_cpu_wrap(cpu, mask, start) \ + for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask, (void)(start)) #define for_each_cpu_and(cpu, mask, and) \ for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask, (void)and) #else diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 34fe8463d10e..eb9eab4ecd6d 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -578,7 +578,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) /* * This is a hack for the legacy x86 forbid_dac and iommu_sac_force. Please - * don't use this is new code. + * don't use this in new code. */ #ifndef arch_dma_supported #define arch_dma_supported(dev, mask) (1) diff --git a/include/linux/fs.h b/include/linux/fs.h index 2a815560fda0..79c413985305 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3198,7 +3198,7 @@ static inline bool vma_is_fsdax(struct vm_area_struct *vma) if (!vma_is_dax(vma)) return false; inode = file_inode(vma->vm_file); - if (inode->i_mode == S_IFCHR) + if (S_ISCHR(inode->i_mode)) return false; /* device-dax */ return true; } diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h index 4fa1a489efe4..4fe8f289b3f6 100644 --- a/include/linux/fwnode.h +++ b/include/linux/fwnode.h @@ -73,8 +73,8 @@ struct fwnode_operations { struct fwnode_handle *(*get)(struct fwnode_handle *fwnode); void (*put)(struct fwnode_handle *fwnode); bool (*device_is_available)(const struct fwnode_handle *fwnode); - void *(*device_get_match_data)(const struct fwnode_handle *fwnode, - const struct device *dev); + const void *(*device_get_match_data)(const struct fwnode_handle *fwnode, + const struct device *dev); bool (*property_present)(const struct fwnode_handle *fwnode, const char *propname); int (*property_read_int_array)(const struct fwnode_handle *fwnode, diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 5e3531027b51..c826b0b5232a 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -198,6 +198,7 @@ struct gendisk { void *private_data; int flags; + struct rw_semaphore lookup_sem; struct kobject *slave_dir; struct timer_rand_state *random; @@ -600,8 +601,9 @@ extern void delete_partition(struct gendisk *, int); extern void printk_all_partitions(void); extern struct gendisk *__alloc_disk_node(int minors, int node_id); -extern struct kobject *get_disk(struct gendisk *disk); +extern struct kobject *get_disk_and_module(struct gendisk *disk); extern void put_disk(struct gendisk *disk); +extern void put_disk_and_module(struct gendisk *disk); extern void blk_register_region(dev_t devt, unsigned long range, struct module *module, struct kobject *(*probe)(dev_t, int *, void *), diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h index ceb751987c40..e5fd2707b6df 100644 --- a/include/linux/hwmon.h +++ b/include/linux/hwmon.h @@ -29,6 +29,7 @@ enum hwmon_sensor_types { hwmon_humidity, hwmon_fan, hwmon_pwm, + hwmon_max, }; enum hwmon_chip_attributes { diff --git a/include/linux/init.h b/include/linux/init.h index 506a98151131..bc27cf03c41e 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -6,10 +6,10 @@ #include <linux/types.h> /* Built-in __init functions needn't be compiled with retpoline */ -#if defined(RETPOLINE) && !defined(MODULE) -#define __noretpoline __attribute__((indirect_branch("keep"))) +#if defined(__noretpoline) && !defined(MODULE) +#define __noinitretpoline __noretpoline #else -#define __noretpoline +#define __noinitretpoline #endif /* These macros are used to mark some functions or @@ -47,7 +47,7 @@ /* These are for everybody (although not all archs will actually discard it in modules) */ -#define __init __section(.init.text) __cold __latent_entropy __noretpoline +#define __init __section(.init.text) __cold __latent_entropy __noinitretpoline #define __initdata __section(.init.data) #define __initconst __section(.init.rodata) #define __exitdata __section(.exit.data) diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index b6a29c126cc4..2168cc6b8b30 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -151,6 +151,7 @@ extern struct jump_entry __start___jump_table[]; extern struct jump_entry __stop___jump_table[]; extern void jump_label_init(void); +extern void jump_label_invalidate_init(void); extern void jump_label_lock(void); extern void jump_label_unlock(void); extern void arch_jump_label_transform(struct jump_entry *entry, @@ -198,6 +199,8 @@ static __always_inline void jump_label_init(void) static_key_initialized = true; } +static inline void jump_label_invalidate_init(void) {} + static __always_inline bool static_key_false(struct static_key *key) { if (unlikely(static_key_count(key) > 0)) diff --git a/include/linux/kconfig.h b/include/linux/kconfig.h index fec5076eda91..dcde9471897d 100644 --- a/include/linux/kconfig.h +++ b/include/linux/kconfig.h @@ -4,6 +4,12 @@ #include <generated/autoconf.h> +#ifdef CONFIG_CPU_BIG_ENDIAN +#define __BIG_ENDIAN 4321 +#else +#define __LITTLE_ENDIAN 1234 +#endif + #define __ARG_PLACEHOLDER_1 0, #define __take_second_arg(__ignored, val, ...) val @@ -64,4 +70,7 @@ */ #define IS_ENABLED(option) __or(IS_BUILTIN(option), IS_MODULE(option)) +/* Make sure we always have all types and struct attributes defined. */ +#include <linux/compiler_types.h> + #endif /* __LINUX_KCONFIG_H */ diff --git a/include/linux/kcore.h b/include/linux/kcore.h index 7ff25a808fef..80db19d3a505 100644 --- a/include/linux/kcore.h +++ b/include/linux/kcore.h @@ -10,6 +10,7 @@ enum kcore_type { KCORE_VMALLOC, KCORE_RAM, KCORE_VMEMMAP, + KCORE_USER, KCORE_OTHER, }; diff --git a/include/linux/kernel.h b/include/linux/kernel.h index ce51455e2adf..3fd291503576 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -472,6 +472,7 @@ extern bool parse_option_str(const char *str, const char *option); extern char *next_arg(char *args, char **param, char **val); extern int core_kernel_text(unsigned long addr); +extern int init_kernel_text(unsigned long addr); extern int core_kernel_data(unsigned long addr); extern int __kernel_text_address(unsigned long addr); extern int kernel_text_address(unsigned long addr); diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index ac0062b74aed..6930c63126c7 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1105,7 +1105,6 @@ static inline void kvm_irq_routing_update(struct kvm *kvm) { } #endif -void kvm_arch_irq_routing_update(struct kvm *kvm); static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) { @@ -1114,6 +1113,8 @@ static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) #endif /* CONFIG_HAVE_KVM_EVENTFD */ +void kvm_arch_irq_routing_update(struct kvm *kvm); + static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) { /* @@ -1272,4 +1273,7 @@ static inline long kvm_arch_vcpu_async_ioctl(struct file *filp, } #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */ +void kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm, + unsigned long start, unsigned long end); + #endif diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 882046863581..c46016bb25eb 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -523,9 +523,11 @@ static inline void __mod_memcg_state(struct mem_cgroup *memcg, static inline void mod_memcg_state(struct mem_cgroup *memcg, int idx, int val) { - preempt_disable(); + unsigned long flags; + + local_irq_save(flags); __mod_memcg_state(memcg, idx, val); - preempt_enable(); + local_irq_restore(flags); } /** @@ -606,9 +608,11 @@ static inline void __mod_lruvec_state(struct lruvec *lruvec, static inline void mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx, int val) { - preempt_disable(); + unsigned long flags; + + local_irq_save(flags); __mod_lruvec_state(lruvec, idx, val); - preempt_enable(); + local_irq_restore(flags); } static inline void __mod_lruvec_page_state(struct page *page, @@ -630,9 +634,11 @@ static inline void __mod_lruvec_page_state(struct page *page, static inline void mod_lruvec_page_state(struct page *page, enum node_stat_item idx, int val) { - preempt_disable(); + unsigned long flags; + + local_irq_save(flags); __mod_lruvec_page_state(page, idx, val); - preempt_enable(); + local_irq_restore(flags); } unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, @@ -659,9 +665,11 @@ static inline void __count_memcg_events(struct mem_cgroup *memcg, static inline void count_memcg_events(struct mem_cgroup *memcg, int idx, unsigned long count) { - preempt_disable(); + unsigned long flags; + + local_irq_save(flags); __count_memcg_events(memcg, idx, count); - preempt_enable(); + local_irq_restore(flags); } /* idx can be of type enum memcg_event_item or vm_event_item */ diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h index c30b32e3c862..10191c28fc04 100644 --- a/include/linux/mm_inline.h +++ b/include/linux/mm_inline.h @@ -127,10 +127,4 @@ static __always_inline enum lru_list page_lru(struct page *page) #define lru_to_page(head) (list_entry((head)->prev, struct page, lru)) -#ifdef arch_unmap_kpfn -extern void arch_unmap_kpfn(unsigned long pfn); -#else -static __always_inline void arch_unmap_kpfn(unsigned long pfn) { } -#endif - #endif diff --git a/include/linux/mutex.h b/include/linux/mutex.h index f25c13423bd4..cb3bbed4e633 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -66,6 +66,11 @@ struct mutex { #endif }; +/* + * Internal helper function; C doesn't allow us to hide it :/ + * + * DO NOT USE (outside of mutex code). + */ static inline struct task_struct *__mutex_owner(struct mutex *lock) { return (struct task_struct *)(atomic_long_read(&lock->owner) & ~0x07); diff --git a/include/linux/nospec.h b/include/linux/nospec.h index b99bced39ac2..e791ebc65c9c 100644 --- a/include/linux/nospec.h +++ b/include/linux/nospec.h @@ -5,6 +5,7 @@ #ifndef _LINUX_NOSPEC_H #define _LINUX_NOSPEC_H +#include <asm/barrier.h> /** * array_index_mask_nospec() - generate a ~0 mask when index < size, 0 otherwise @@ -20,20 +21,6 @@ static inline unsigned long array_index_mask_nospec(unsigned long index, unsigned long size) { /* - * Warn developers about inappropriate array_index_nospec() usage. - * - * Even if the CPU speculates past the WARN_ONCE branch, the - * sign bit of @index is taken into account when generating the - * mask. - * - * This warning is compiled out when the compiler can infer that - * @index and @size are less than LONG_MAX. - */ - if (WARN_ONCE(index > LONG_MAX || size > LONG_MAX, - "array_index_nospec() limited to range of [0, LONG_MAX]\n")) - return 0; - - /* * Always calculate and emit the mask even if the compiler * thinks the mask is not needed. The compiler does not take * into account the value of @index under speculation. @@ -66,7 +53,6 @@ static inline unsigned long array_index_mask_nospec(unsigned long index, BUILD_BUG_ON(sizeof(_i) > sizeof(long)); \ BUILD_BUG_ON(sizeof(_s) > sizeof(long)); \ \ - _i &= _mask; \ - _i; \ + (typeof(_i)) (_i & _mask); \ }) #endif /* _LINUX_NOSPEC_H */ diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index af0f44effd44..40036a57d072 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -14,26 +14,10 @@ #include <linux/interrupt.h> #include <linux/perf_event.h> +#include <linux/platform_device.h> #include <linux/sysfs.h> #include <asm/cputype.h> -/* - * struct arm_pmu_platdata - ARM PMU platform data - * - * @handle_irq: an optional handler which will be called from the - * interrupt and passed the address of the low level handler, - * and can be used to implement any platform specific handling - * before or after calling it. - * - * @irq_flags: if non-zero, these flags will be passed to request_irq - * when requesting interrupts for this PMU device. - */ -struct arm_pmu_platdata { - irqreturn_t (*handle_irq)(int irq, void *dev, - irq_handler_t pmu_handler); - unsigned long irq_flags; -}; - #ifdef CONFIG_ARM_PMU /* @@ -92,7 +76,6 @@ enum armpmu_attr_groups { struct arm_pmu { struct pmu pmu; - cpumask_t active_irqs; cpumask_t supported_cpus; char *name; irqreturn_t (*handle_irq)(int irq_num, void *dev); @@ -174,12 +157,11 @@ static inline int arm_pmu_acpi_probe(armpmu_init_fn init_fn) { return 0; } /* Internal functions only for core arm_pmu code */ struct arm_pmu *armpmu_alloc(void); +struct arm_pmu *armpmu_alloc_atomic(void); void armpmu_free(struct arm_pmu *pmu); int armpmu_register(struct arm_pmu *pmu); -int armpmu_request_irqs(struct arm_pmu *armpmu); -void armpmu_free_irqs(struct arm_pmu *armpmu); -int armpmu_request_irq(struct arm_pmu *armpmu, int cpu); -void armpmu_free_irq(struct arm_pmu *armpmu, int cpu); +int armpmu_request_irq(int irq, int cpu); +void armpmu_free_irq(int irq, int cpu); #define ARMV8_PMU_PDEV_NAME "armv8-pmu" diff --git a/include/linux/property.h b/include/linux/property.h index 769d372c1edf..2eea4b310fc2 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -283,7 +283,7 @@ bool device_dma_supported(struct device *dev); enum dev_dma_attr device_get_dma_attr(struct device *dev); -void *device_get_match_data(struct device *dev); +const void *device_get_match_data(struct device *dev); int device_get_phy_mode(struct device *dev); diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h index b884b7794187..e6335227b844 100644 --- a/include/linux/ptr_ring.h +++ b/include/linux/ptr_ring.h @@ -469,7 +469,7 @@ static inline int ptr_ring_consume_batched_bh(struct ptr_ring *r, */ static inline void **__ptr_ring_init_queue_alloc(unsigned int size, gfp_t gfp) { - if (size * sizeof(void *) > KMALLOC_MAX_SIZE) + if (size > KMALLOC_MAX_SIZE / sizeof(void *)) return NULL; return kvmalloc_array(size, sizeof(void *), gfp | __GFP_ZERO); } diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h index 1149533aa2fa..9806184bb3d5 100644 --- a/include/linux/sched/mm.h +++ b/include/linux/sched/mm.h @@ -36,7 +36,18 @@ static inline void mmgrab(struct mm_struct *mm) atomic_inc(&mm->mm_count); } -extern void mmdrop(struct mm_struct *mm); +extern void __mmdrop(struct mm_struct *mm); + +static inline void mmdrop(struct mm_struct *mm) +{ + /* + * The implicit full barrier implied by atomic_dec_and_test() is + * required by the membarrier system call before returning to + * user-space, after storing to rq->curr. + */ + if (unlikely(atomic_dec_and_test(&mm->mm_count))) + __mmdrop(mm); +} /** * mmget() - Pin the address space associated with a &struct mm_struct. diff --git a/include/linux/sched/user.h b/include/linux/sched/user.h index 0dcf4e480ef7..96fe289c4c6e 100644 --- a/include/linux/sched/user.h +++ b/include/linux/sched/user.h @@ -4,6 +4,7 @@ #include <linux/uidgid.h> #include <linux/atomic.h> +#include <linux/ratelimit.h> struct key; @@ -41,6 +42,9 @@ struct user_struct { defined(CONFIG_NET) atomic_long_t locked_vm; #endif + + /* Miscellaneous per-user rate limit */ + struct ratelimit_state ratelimit; }; extern int uids_sysfs_init(void); diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h new file mode 100644 index 000000000000..b458c87b866c --- /dev/null +++ b/include/linux/scmi_protocol.h @@ -0,0 +1,277 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SCMI Message Protocol driver header + * + * Copyright (C) 2018 ARM Ltd. + */ +#include <linux/device.h> +#include <linux/types.h> + +#define SCMI_MAX_STR_SIZE 16 +#define SCMI_MAX_NUM_RATES 16 + +/** + * struct scmi_revision_info - version information structure + * + * @major_ver: Major ABI version. Change here implies risk of backward + * compatibility break. + * @minor_ver: Minor ABI version. Change here implies new feature addition, + * or compatible change in ABI. + * @num_protocols: Number of protocols that are implemented, excluding the + * base protocol. + * @num_agents: Number of agents in the system. + * @impl_ver: A vendor-specific implementation version. + * @vendor_id: A vendor identifier(Null terminated ASCII string) + * @sub_vendor_id: A sub-vendor identifier(Null terminated ASCII string) + */ +struct scmi_revision_info { + u16 major_ver; + u16 minor_ver; + u8 num_protocols; + u8 num_agents; + u32 impl_ver; + char vendor_id[SCMI_MAX_STR_SIZE]; + char sub_vendor_id[SCMI_MAX_STR_SIZE]; +}; + +struct scmi_clock_info { + char name[SCMI_MAX_STR_SIZE]; + bool rate_discrete; + union { + struct { + int num_rates; + u64 rates[SCMI_MAX_NUM_RATES]; + } list; + struct { + u64 min_rate; + u64 max_rate; + u64 step_size; + } range; + }; +}; + +struct scmi_handle; + +/** + * struct scmi_clk_ops - represents the various operations provided + * by SCMI Clock Protocol + * + * @count_get: get the count of clocks provided by SCMI + * @info_get: get the information of the specified clock + * @rate_get: request the current clock rate of a clock + * @rate_set: set the clock rate of a clock + * @enable: enables the specified clock + * @disable: disables the specified clock + */ +struct scmi_clk_ops { + int (*count_get)(const struct scmi_handle *handle); + + const struct scmi_clock_info *(*info_get) + (const struct scmi_handle *handle, u32 clk_id); + int (*rate_get)(const struct scmi_handle *handle, u32 clk_id, + u64 *rate); + int (*rate_set)(const struct scmi_handle *handle, u32 clk_id, + u32 config, u64 rate); + int (*enable)(const struct scmi_handle *handle, u32 clk_id); + int (*disable)(const struct scmi_handle *handle, u32 clk_id); +}; + +/** + * struct scmi_perf_ops - represents the various operations provided + * by SCMI Performance Protocol + * + * @limits_set: sets limits on the performance level of a domain + * @limits_get: gets limits on the performance level of a domain + * @level_set: sets the performance level of a domain + * @level_get: gets the performance level of a domain + * @device_domain_id: gets the scmi domain id for a given device + * @get_transition_latency: gets the DVFS transition latency for a given device + * @add_opps_to_device: adds all the OPPs for a given device + * @freq_set: sets the frequency for a given device using sustained frequency + * to sustained performance level mapping + * @freq_get: gets the frequency for a given device using sustained frequency + * to sustained performance level mapping + */ +struct scmi_perf_ops { + int (*limits_set)(const struct scmi_handle *handle, u32 domain, + u32 max_perf, u32 min_perf); + int (*limits_get)(const struct scmi_handle *handle, u32 domain, + u32 *max_perf, u32 *min_perf); + int (*level_set)(const struct scmi_handle *handle, u32 domain, + u32 level, bool poll); + int (*level_get)(const struct scmi_handle *handle, u32 domain, + u32 *level, bool poll); + int (*device_domain_id)(struct device *dev); + int (*get_transition_latency)(const struct scmi_handle *handle, + struct device *dev); + int (*add_opps_to_device)(const struct scmi_handle *handle, + struct device *dev); + int (*freq_set)(const struct scmi_handle *handle, u32 domain, + unsigned long rate, bool poll); + int (*freq_get)(const struct scmi_handle *handle, u32 domain, + unsigned long *rate, bool poll); +}; + +/** + * struct scmi_power_ops - represents the various operations provided + * by SCMI Power Protocol + * + * @num_domains_get: get the count of power domains provided by SCMI + * @name_get: gets the name of a power domain + * @state_set: sets the power state of a power domain + * @state_get: gets the power state of a power domain + */ +struct scmi_power_ops { + int (*num_domains_get)(const struct scmi_handle *handle); + char *(*name_get)(const struct scmi_handle *handle, u32 domain); +#define SCMI_POWER_STATE_TYPE_SHIFT 30 +#define SCMI_POWER_STATE_ID_MASK (BIT(28) - 1) +#define SCMI_POWER_STATE_PARAM(type, id) \ + ((((type) & BIT(0)) << SCMI_POWER_STATE_TYPE_SHIFT) | \ + ((id) & SCMI_POWER_STATE_ID_MASK)) +#define SCMI_POWER_STATE_GENERIC_ON SCMI_POWER_STATE_PARAM(0, 0) +#define SCMI_POWER_STATE_GENERIC_OFF SCMI_POWER_STATE_PARAM(1, 0) + int (*state_set)(const struct scmi_handle *handle, u32 domain, + u32 state); + int (*state_get)(const struct scmi_handle *handle, u32 domain, + u32 *state); +}; + +struct scmi_sensor_info { + u32 id; + u8 type; + char name[SCMI_MAX_STR_SIZE]; +}; + +/* + * Partial list from Distributed Management Task Force (DMTF) specification: + * DSP0249 (Platform Level Data Model specification) + */ +enum scmi_sensor_class { + NONE = 0x0, + TEMPERATURE_C = 0x2, + VOLTAGE = 0x5, + CURRENT = 0x6, + POWER = 0x7, + ENERGY = 0x8, +}; + +/** + * struct scmi_sensor_ops - represents the various operations provided + * by SCMI Sensor Protocol + * + * @count_get: get the count of sensors provided by SCMI + * @info_get: get the information of the specified sensor + * @configuration_set: control notifications on cross-over events for + * the trip-points + * @trip_point_set: selects and configures a trip-point of interest + * @reading_get: gets the current value of the sensor + */ +struct scmi_sensor_ops { + int (*count_get)(const struct scmi_handle *handle); + + const struct scmi_sensor_info *(*info_get) + (const struct scmi_handle *handle, u32 sensor_id); + int (*configuration_set)(const struct scmi_handle *handle, + u32 sensor_id); + int (*trip_point_set)(const struct scmi_handle *handle, u32 sensor_id, + u8 trip_id, u64 trip_value); + int (*reading_get)(const struct scmi_handle *handle, u32 sensor_id, + bool async, u64 *value); +}; + +/** + * struct scmi_handle - Handle returned to ARM SCMI clients for usage. + * + * @dev: pointer to the SCMI device + * @version: pointer to the structure containing SCMI version information + * @power_ops: pointer to set of power protocol operations + * @perf_ops: pointer to set of performance protocol operations + * @clk_ops: pointer to set of clock protocol operations + * @sensor_ops: pointer to set of sensor protocol operations + */ +struct scmi_handle { + struct device *dev; + struct scmi_revision_info *version; + struct scmi_perf_ops *perf_ops; + struct scmi_clk_ops *clk_ops; + struct scmi_power_ops *power_ops; + struct scmi_sensor_ops *sensor_ops; + /* for protocol internal use */ + void *perf_priv; + void *clk_priv; + void *power_priv; + void *sensor_priv; +}; + +enum scmi_std_protocol { + SCMI_PROTOCOL_BASE = 0x10, + SCMI_PROTOCOL_POWER = 0x11, + SCMI_PROTOCOL_SYSTEM = 0x12, + SCMI_PROTOCOL_PERF = 0x13, + SCMI_PROTOCOL_CLOCK = 0x14, + SCMI_PROTOCOL_SENSOR = 0x15, +}; + +struct scmi_device { + u32 id; + u8 protocol_id; + struct device dev; + struct scmi_handle *handle; +}; + +#define to_scmi_dev(d) container_of(d, struct scmi_device, dev) + +struct scmi_device * +scmi_device_create(struct device_node *np, struct device *parent, int protocol); +void scmi_device_destroy(struct scmi_device *scmi_dev); + +struct scmi_device_id { + u8 protocol_id; +}; + +struct scmi_driver { + const char *name; + int (*probe)(struct scmi_device *sdev); + void (*remove)(struct scmi_device *sdev); + const struct scmi_device_id *id_table; + + struct device_driver driver; +}; + +#define to_scmi_driver(d) container_of(d, struct scmi_driver, driver) + +#ifdef CONFIG_ARM_SCMI_PROTOCOL +int scmi_driver_register(struct scmi_driver *driver, + struct module *owner, const char *mod_name); +void scmi_driver_unregister(struct scmi_driver *driver); +#else +static inline int +scmi_driver_register(struct scmi_driver *driver, struct module *owner, + const char *mod_name) +{ + return -EINVAL; +} + +static inline void scmi_driver_unregister(struct scmi_driver *driver) {} +#endif /* CONFIG_ARM_SCMI_PROTOCOL */ + +#define scmi_register(driver) \ + scmi_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) +#define scmi_unregister(driver) \ + scmi_driver_unregister(driver) + +/** + * module_scmi_driver() - Helper macro for registering a scmi driver + * @__scmi_driver: scmi_driver structure + * + * Helper macro for scmi drivers to set up proper module init / exit + * functions. Replaces module_init() and module_exit() and keeps people from + * printing pointless things to the kernel log when their driver is loaded. + */ +#define module_scmi_driver(__scmi_driver) \ + module_driver(__scmi_driver, scmi_register, scmi_unregister) + +typedef int (*scmi_prot_init_fn_t)(struct scmi_handle *); +int scmi_protocol_register(int protocol_id, scmi_prot_init_fn_t fn); +void scmi_protocol_unregister(int protocol_id); diff --git a/include/linux/semaphore.h b/include/linux/semaphore.h index dc368b8ce215..11c86fbfeb98 100644 --- a/include/linux/semaphore.h +++ b/include/linux/semaphore.h @@ -4,7 +4,7 @@ * * Distributed under the terms of the GNU GPL, version 2 * - * Please see kernel/semaphore.c for documentation of these functions + * Please see kernel/locking/semaphore.c for documentation of these functions */ #ifndef __LINUX_SEMAPHORE_H #define __LINUX_SEMAPHORE_H diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 5ebc0f869720..c1e66bdcf583 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -3646,7 +3646,7 @@ static inline bool __skb_checksum_validate_needed(struct sk_buff *skb, return true; } -/* For small packets <= CHECKSUM_BREAK peform checksum complete directly +/* For small packets <= CHECKSUM_BREAK perform checksum complete directly * in checksum_init. */ #define CHECKSUM_BREAK 76 diff --git a/include/linux/soc/samsung/exynos-pmu.h b/include/linux/soc/samsung/exynos-pmu.h index e57eb4b6cc5a..fc0b445bb36b 100644 --- a/include/linux/soc/samsung/exynos-pmu.h +++ b/include/linux/soc/samsung/exynos-pmu.h @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * * Header for EXYNOS PMU Driver support - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef __LINUX_SOC_EXYNOS_PMU_H diff --git a/include/linux/soc/samsung/exynos-regs-pmu.h b/include/linux/soc/samsung/exynos-regs-pmu.h index bebdde5dccd6..66dcb9ec273a 100644 --- a/include/linux/soc/samsung/exynos-regs-pmu.h +++ b/include/linux/soc/samsung/exynos-regs-pmu.h @@ -1,14 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2010-2015 Samsung Electronics Co., Ltd. * http://www.samsung.com * * EXYNOS - Power management unit definition * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * * Notice: * This is not a list of all Exynos Power Management Unit SFRs. * There are too many of them, not mentioning subtle differences diff --git a/include/linux/swap.h b/include/linux/swap.h index 7b6a59f722a3..a1a3f4ed94ce 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -337,8 +337,6 @@ extern void deactivate_file_page(struct page *page); extern void mark_page_lazyfree(struct page *page); extern void swap_setup(void); -extern void add_page_to_unevictable_list(struct page *page); - extern void lru_cache_add_active_or_unevictable(struct page *page, struct vm_area_struct *vma); diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 4a54ef96aff5..bc0cda180c8b 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -465,6 +465,7 @@ extern bool cancel_delayed_work_sync(struct delayed_work *dwork); extern void workqueue_set_max_active(struct workqueue_struct *wq, int max_active); +extern struct work_struct *current_work(void); extern bool current_is_workqueue_rescuer(void); extern bool workqueue_congested(int cpu, struct workqueue_struct *wq); extern unsigned int work_busy(struct work_struct *work); |
