diff options
author | Mark Brown <broonie@kernel.org> | 2016-03-21 17:08:07 +0000 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2016-03-21 17:08:07 +0000 |
commit | c35983d487b56c023b70d6727ad002b19f935827 (patch) | |
tree | 06b6b8ad506084442a3a0f46dbde6789fd78e358 /include/linux | |
parent | bb19a07897898f424c62b4456ba100fd38cfa679 (diff) | |
parent | 412f52dbad2603a77f26f0337ae03800e39504f0 (diff) |
Merge tag 'v4.4.4-rt11' of git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel into linux-linaro-lsk-v4.4-rt
v4.4.4-rt11
Diffstat (limited to 'include/linux')
28 files changed, 328 insertions, 259 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 2366b9cec665..77fed1b9afcd 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -456,7 +456,7 @@ struct request_queue { struct throtl_data *td; #endif struct rcu_head rcu_head; - struct swait_head mq_freeze_wq; + struct swait_queue_head mq_freeze_wq; struct percpu_ref q_usage_counter; struct list_head all_q_node; diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index 71b1d6cdcb5d..8dbd7879fdc6 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -220,6 +220,7 @@ struct ceph_connection { struct ceph_entity_addr actual_peer_addr; /* message out temps */ + struct ceph_msg_header out_hdr; struct ceph_msg *out_msg; /* sending message (== tail of out_sent) */ bool out_msg_done; @@ -229,7 +230,6 @@ struct ceph_connection { int out_kvec_left; /* kvec's left in out_kvec */ int out_skip; /* skip this many bytes */ int out_kvec_bytes; /* total bytes left */ - bool out_kvec_is_msg; /* kvec refers to out_msg */ int out_more; /* there is more data after the kvecs */ __le64 out_temp_ack; /* for writing an ack */ struct ceph_timespec out_temp_keepalive2; /* for writing keepalive2 diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index 634111447aea..63f0063c0e34 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -134,6 +134,12 @@ struct cgroup_subsys_state { */ u64 serial_nr; + /* + * Incremented by online self and children. Used to guarantee that + * parents are not offlined before their children. + */ + atomic_t online_cnt; + /* percpu_ref killing and RCU release */ struct rcu_head rcu_head; struct work_struct destroy_work; diff --git a/include/linux/clk/at91_pmc.h b/include/linux/clk/at91_pmc.h index 1e6932222e11..17f413bbbedf 100644 --- a/include/linux/clk/at91_pmc.h +++ b/include/linux/clk/at91_pmc.h @@ -16,18 +16,6 @@ #ifndef AT91_PMC_H #define AT91_PMC_H -#ifndef __ASSEMBLY__ -extern void __iomem *at91_pmc_base; - -#define at91_pmc_read(field) \ - readl_relaxed(at91_pmc_base + field) - -#define at91_pmc_write(field, value) \ - writel_relaxed(value, at91_pmc_base + field) -#else -.extern at91_pmc_base -#endif - #define AT91_PMC_SCER 0x00 /* System Clock Enable Register */ #define AT91_PMC_SCDR 0x04 /* System Clock Disable Register */ diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 4dac1036594f..6fc9a6dd5ed2 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -144,7 +144,7 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); */ #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) #define __trace_if(cond) \ - if (__builtin_constant_p((cond)) ? !!(cond) : \ + if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ({ \ int ______r; \ static struct ftrace_branch_data \ diff --git a/include/linux/completion.h b/include/linux/completion.h index 3fe8d14c98c0..3bca1590e29f 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -7,7 +7,7 @@ * Atomic wait-for-completion handler data structures. * See kernel/sched/completion.c for details. */ -#include <linux/wait-simple.h> +#include <linux/swait.h> /* * struct completion - structure used to maintain state for a "completion" @@ -23,11 +23,11 @@ */ struct completion { unsigned int done; - struct swait_head wait; + struct swait_queue_head wait; }; #define COMPLETION_INITIALIZER(work) \ - { 0, SWAIT_HEAD_INITIALIZER((work).wait) } + { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait) } #define COMPLETION_INITIALIZER_ONSTACK(work) \ ({ init_completion(&work); work; }) @@ -72,7 +72,7 @@ struct completion { static inline void init_completion(struct completion *x) { x->done = 0; - init_swait_head(&x->wait); + init_swait_queue_head(&x->wait); } /** diff --git a/include/linux/console.h b/include/linux/console.h index bd194343c346..ea731af2451e 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -150,6 +150,7 @@ extern int console_trylock(void); extern void console_unlock(void); extern void console_conditional_schedule(void); extern void console_unblank(void); +extern void console_flush_on_panic(void); extern struct tty_driver *console_device(int *); extern void console_stop(struct console *); extern void console_start(struct console *); diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index 85a868ccb493..fea160ee5803 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -137,6 +137,8 @@ static inline void set_mems_allowed(nodemask_t nodemask) task_unlock(current); } +extern void cpuset_post_attach_flush(void); + #else /* !CONFIG_CPUSETS */ static inline bool cpusets_enabled(void) { return false; } @@ -243,6 +245,10 @@ static inline bool read_mems_allowed_retry(unsigned int seq) return false; } +static inline void cpuset_post_attach_flush(void) +{ +} + #endif /* !CONFIG_CPUSETS */ #endif /* _LINUX_CPUSET_H */ diff --git a/include/linux/devpts_fs.h b/include/linux/devpts_fs.h index 251a2090a554..e0ee0b3000b2 100644 --- a/include/linux/devpts_fs.h +++ b/include/linux/devpts_fs.h @@ -19,6 +19,8 @@ int devpts_new_index(struct inode *ptmx_inode); void devpts_kill_index(struct inode *ptmx_inode, int idx); +void devpts_add_ref(struct inode *ptmx_inode); +void devpts_del_ref(struct inode *ptmx_inode); /* mknod in devpts */ struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index, void *priv); @@ -32,6 +34,8 @@ void devpts_pty_kill(struct inode *inode); /* Dummy stubs in the no-pty case */ static inline int devpts_new_index(struct inode *ptmx_inode) { return -EINVAL; } static inline void devpts_kill_index(struct inode *ptmx_inode, int idx) { } +static inline void devpts_add_ref(struct inode *ptmx_inode) { } +static inline void devpts_del_ref(struct inode *ptmx_inode) { } static inline struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index, void *priv) { diff --git a/include/linux/efi.h b/include/linux/efi.h index 569b5a866bb1..47be3ad7d3e5 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1199,7 +1199,10 @@ int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, struct list_head *head, bool remove); -bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len); +bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, + unsigned long data_size); +bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, + size_t len); extern struct work_struct efivar_work; void efivar_run_worker(void); diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 60048c50404e..f2cd67624f18 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -694,6 +694,18 @@ static inline void __ftrace_enabled_restore(int enabled) #define CALLER_ADDR5 ((unsigned long)ftrace_return_address(5)) #define CALLER_ADDR6 ((unsigned long)ftrace_return_address(6)) +static inline unsigned long get_lock_parent_ip(void) +{ + unsigned long addr = CALLER_ADDR0; + + if (!in_lock_functions(addr)) + return addr; + addr = CALLER_ADDR1; + if (!in_lock_functions(addr)) + return addr; + return CALLER_ADDR2; +} + #ifdef CONFIG_IRQSOFF_TRACER extern void time_hardirqs_on(unsigned long a0, unsigned long a1); extern void time_hardirqs_off(unsigned long a0, unsigned long a1); diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 27933e47ed22..8fbcdfa5dc77 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -90,7 +90,8 @@ enum hrtimer_restart { * @cb_entry: list entry to defer timers from hardirq context * @irqsafe: timer can run in hardirq context * @praecox: timer expiry time if expired at the time of programming - * @start_pid: timer statistics field to store the pid of the task which + * @is_rel: Set if the timer was armed relative + * @start_pid: timer statistics field to store the pid of the task which * started the timer * @start_site: timer statistics field to store the site where the timer * was started @@ -104,12 +105,13 @@ struct hrtimer { ktime_t _softexpires; enum hrtimer_restart (*function)(struct hrtimer *); struct hrtimer_clock_base *base; - unsigned long state; + u8 state; struct list_head cb_entry; int irqsafe; #ifdef CONFIG_MISSED_TIMER_OFFSETS_HIST ktime_t praecox; #endif + u8 is_rel; #ifdef CONFIG_TIMER_STATS int start_pid; void *start_site; @@ -331,6 +333,27 @@ static inline void clock_was_set_delayed(void) { } #endif +static inline ktime_t +__hrtimer_expires_remaining_adjusted(const struct hrtimer *timer, ktime_t now) +{ + ktime_t rem = ktime_sub(timer->node.expires, now); + + /* + * Adjust relative timers for the extra we added in + * hrtimer_start_range_ns() to prevent short timeouts. + */ + if (IS_ENABLED(CONFIG_TIME_LOW_RES) && timer->is_rel) + rem.tv64 -= hrtimer_resolution; + return rem; +} + +static inline ktime_t +hrtimer_expires_remaining_adjusted(const struct hrtimer *timer) +{ + return __hrtimer_expires_remaining_adjusted(timer, + timer->base->get_time()); +} + extern void clock_was_set(void); #ifdef CONFIG_TIMERFD extern void timerfd_clock_was_set(void); @@ -407,7 +430,12 @@ static inline void hrtimer_restart(struct hrtimer *timer) #endif /* Query timers: */ -extern ktime_t hrtimer_get_remaining(const struct hrtimer *timer); +extern ktime_t __hrtimer_get_remaining(const struct hrtimer *timer, bool adjust); + +static inline ktime_t hrtimer_get_remaining(const struct hrtimer *timer) +{ + return __hrtimer_get_remaining(timer, false); +} extern u64 hrtimer_get_next_event(void); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 8fdc17b84739..ae6a711dcd1d 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -630,6 +630,11 @@ struct hv_input_signal_event_buffer { struct hv_input_signal_event event; }; +enum hv_signal_policy { + HV_SIGNAL_POLICY_DEFAULT = 0, + HV_SIGNAL_POLICY_EXPLICIT, +}; + struct vmbus_channel { /* Unique channel id */ int id; @@ -757,8 +762,21 @@ struct vmbus_channel { * link up channels based on their CPU affinity. */ struct list_head percpu_list; + /* + * Host signaling policy: The default policy will be + * based on the ring buffer state. We will also support + * a policy where the client driver can have explicit + * signaling control. + */ + enum hv_signal_policy signal_policy; }; +static inline void set_channel_signal_state(struct vmbus_channel *c, + enum hv_signal_policy policy) +{ + c->signal_policy = policy; +} + static inline void set_channel_read_state(struct vmbus_channel *c, bool state) { c->batched_reading = state; diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 821273ca4873..2d9b650047a5 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -235,6 +235,9 @@ static inline void dmar_writeq(void __iomem *addr, u64 val) /* low 64 bit */ #define dma_frcd_page_addr(d) (d & (((u64)-1) << PAGE_SHIFT)) +/* PRS_REG */ +#define DMA_PRS_PPR ((u32)1) + #define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \ do { \ cycles_t start_time = get_cycles(); \ diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index d856ccde77b4..c690acc6900e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -25,6 +25,7 @@ #include <linux/irqflags.h> #include <linux/context_tracking.h> #include <linux/irqbypass.h> +#include <linux/swait.h> #include <asm/signal.h> #include <linux/kvm.h> @@ -243,7 +244,7 @@ struct kvm_vcpu { int fpu_active; int guest_fpu_loaded, guest_xcr0_loaded; unsigned char fpu_counter; - struct swait_head wq; + struct swait_queue_head wq; struct pid *pid; int sigset_active; sigset_t sigset; @@ -794,7 +795,7 @@ static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) } #endif -static inline struct swait_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) +static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) { #ifdef __KVM_HAVE_ARCH_WQP return vcpu->arch.wqp; diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index c0e961474a52..5455b660bd88 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -544,9 +544,7 @@ extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, static inline loff_t nfs_size_to_loff_t(__u64 size) { - if (size > (__u64) OFFSET_MAX - 1) - return OFFSET_MAX - 1; - return (loff_t) size; + return min_t(u64, size, OFFSET_MAX); } static inline ino_t diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 061265f92876..504c98a278d4 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -57,7 +57,29 @@ extern void exit_ptrace(struct task_struct *tracer, struct list_head *dead); #define PTRACE_MODE_READ 0x01 #define PTRACE_MODE_ATTACH 0x02 #define PTRACE_MODE_NOAUDIT 0x04 -/* Returns true on success, false on denial. */ +#define PTRACE_MODE_FSCREDS 0x08 +#define PTRACE_MODE_REALCREDS 0x10 + +/* shorthands for READ/ATTACH and FSCREDS/REALCREDS combinations */ +#define PTRACE_MODE_READ_FSCREDS (PTRACE_MODE_READ | PTRACE_MODE_FSCREDS) +#define PTRACE_MODE_READ_REALCREDS (PTRACE_MODE_READ | PTRACE_MODE_REALCREDS) +#define PTRACE_MODE_ATTACH_FSCREDS (PTRACE_MODE_ATTACH | PTRACE_MODE_FSCREDS) +#define PTRACE_MODE_ATTACH_REALCREDS (PTRACE_MODE_ATTACH | PTRACE_MODE_REALCREDS) + +/** + * ptrace_may_access - check whether the caller is permitted to access + * a target task. + * @task: target task + * @mode: selects type of access and caller credentials + * + * Returns true on success, false on denial. + * + * One of the flags PTRACE_MODE_FSCREDS and PTRACE_MODE_REALCREDS must + * be set in @mode to specify whether the access was requested through + * a filesystem syscall (should use effective capabilities and fsuid + * of the caller) or through an explicit syscall such as + * process_vm_writev or ptrace (and should use the real credentials). + */ extern bool ptrace_may_access(struct task_struct *task, unsigned int mode); static inline int ptrace_reparented(struct task_struct *child) diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index 933ff6977c96..8ddbd6e15a3c 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -375,12 +375,28 @@ void **radix_tree_next_chunk(struct radix_tree_root *root, struct radix_tree_iter *iter, unsigned flags); /** + * radix_tree_iter_retry - retry this chunk of the iteration + * @iter: iterator state + * + * If we iterate over a tree protected only by the RCU lock, a race + * against deletion or creation may result in seeing a slot for which + * radix_tree_deref_retry() returns true. If so, call this function + * and continue the iteration. + */ +static inline __must_check +void **radix_tree_iter_retry(struct radix_tree_iter *iter) +{ + iter->next_index = iter->index; + return NULL; +} + +/** * radix_tree_chunk_size - get current chunk size * * @iter: pointer to radix tree iterator * Returns: current chunk size */ -static __always_inline unsigned +static __always_inline long radix_tree_chunk_size(struct radix_tree_iter *iter) { return iter->next_index - iter->index; @@ -414,9 +430,9 @@ radix_tree_next_slot(void **slot, struct radix_tree_iter *iter, unsigned flags) return slot + offset + 1; } } else { - unsigned size = radix_tree_chunk_size(iter) - 1; + long size = radix_tree_chunk_size(iter); - while (size--) { + while (--size > 0) { slot++; iter->index++; if (likely(*slot)) diff --git a/include/linux/rmap.h b/include/linux/rmap.h index 29446aeef36e..ddda2ac3446e 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -108,20 +108,6 @@ static inline void put_anon_vma(struct anon_vma *anon_vma) __put_anon_vma(anon_vma); } -static inline void vma_lock_anon_vma(struct vm_area_struct *vma) -{ - struct anon_vma *anon_vma = vma->anon_vma; - if (anon_vma) - down_write(&anon_vma->root->rwsem); -} - -static inline void vma_unlock_anon_vma(struct vm_area_struct *vma) -{ - struct anon_vma *anon_vma = vma->anon_vma; - if (anon_vma) - up_write(&anon_vma->root->rwsem); -} - static inline void anon_vma_lock_write(struct anon_vma *anon_vma) { down_write(&anon_vma->root->rwsem); diff --git a/include/linux/sched.h b/include/linux/sched.h index b6a2358eb793..58c5ec8c3742 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -183,8 +183,6 @@ extern void update_cpu_load_nohz(void); static inline void update_cpu_load_nohz(void) { } #endif -extern unsigned long get_parent_ip(unsigned long addr); - extern void dump_cpu_task(int cpu); struct seq_file; diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index 50777b5b1e4c..92d112aeec68 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -15,10 +15,7 @@ struct shmem_inode_info { unsigned int seals; /* shmem seals */ unsigned long flags; unsigned long alloced; /* data pages alloced to file */ - union { - unsigned long swapped; /* subtotal assigned to swap */ - char *symlink; /* unswappable short symlink */ - }; + unsigned long swapped; /* subtotal assigned to swap */ struct shared_policy policy; /* NUMA memory alloc policy */ struct list_head swaplist; /* chain of maybes on swap */ struct simple_xattrs xattrs; /* list of xattrs */ diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index d7a6063584cf..71a6f5b04527 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -220,6 +220,7 @@ struct sk_buff; #else #define MAX_SKB_FRAGS (65536/PAGE_SIZE + 1) #endif +extern int sysctl_max_skb_frags; typedef struct skb_frag_struct skb_frag_t; diff --git a/include/linux/swait.h b/include/linux/swait.h new file mode 100644 index 000000000000..83f004a72320 --- /dev/null +++ b/include/linux/swait.h @@ -0,0 +1,173 @@ +#ifndef _LINUX_SWAIT_H +#define _LINUX_SWAIT_H + +#include <linux/list.h> +#include <linux/stddef.h> +#include <linux/spinlock.h> +#include <asm/current.h> + +/* + * Simple wait queues + * + * While these are very similar to the other/complex wait queues (wait.h) the + * most important difference is that the simple waitqueue allows for + * deterministic behaviour -- IOW it has strictly bounded IRQ and lock hold + * times. + * + * In order to make this so, we had to drop a fair number of features of the + * other waitqueue code; notably: + * + * - mixing INTERRUPTIBLE and UNINTERRUPTIBLE sleeps on the same waitqueue; + * all wakeups are TASK_NORMAL in order to avoid O(n) lookups for the right + * sleeper state. + * + * - the exclusive mode; because this requires preserving the list order + * and this is hard. + * + * - custom wake functions; because you cannot give any guarantees about + * random code. + * + * As a side effect of this; the data structures are slimmer. + * + * One would recommend using this wait queue where possible. + */ + +struct task_struct; + +struct swait_queue_head { + raw_spinlock_t lock; + struct list_head task_list; +}; + +struct swait_queue { + struct task_struct *task; + struct list_head task_list; +}; + +#define __SWAITQUEUE_INITIALIZER(name) { \ + .task = current, \ + .task_list = LIST_HEAD_INIT((name).task_list), \ +} + +#define DECLARE_SWAITQUEUE(name) \ + struct swait_queue name = __SWAITQUEUE_INITIALIZER(name) + +#define __SWAIT_QUEUE_HEAD_INITIALIZER(name) { \ + .lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \ + .task_list = LIST_HEAD_INIT((name).task_list), \ +} + +#define DECLARE_SWAIT_QUEUE_HEAD(name) \ + struct swait_queue_head name = __SWAIT_QUEUE_HEAD_INITIALIZER(name) + +extern void __init_swait_queue_head(struct swait_queue_head *q, const char *name, + struct lock_class_key *key); + +#define init_swait_queue_head(q) \ + do { \ + static struct lock_class_key __key; \ + __init_swait_queue_head((q), #q, &__key); \ + } while (0) + +#ifdef CONFIG_LOCKDEP +# define __SWAIT_QUEUE_HEAD_INIT_ONSTACK(name) \ + ({ init_swait_queue_head(&name); name; }) +# define DECLARE_SWAIT_QUEUE_HEAD_ONSTACK(name) \ + struct swait_queue_head name = __SWAIT_QUEUE_HEAD_INIT_ONSTACK(name) +#else +# define DECLARE_SWAIT_QUEUE_HEAD_ONSTACK(name) \ + DECLARE_SWAIT_QUEUE_HEAD(name) +#endif + +static inline int swait_active(struct swait_queue_head *q) +{ + return !list_empty(&q->task_list); +} + +extern void swake_up(struct swait_queue_head *q); +extern void swake_up_all(struct swait_queue_head *q); +extern void swake_up_locked(struct swait_queue_head *q); +extern void swake_up_all_locked(struct swait_queue_head *q); + +extern void __prepare_to_swait(struct swait_queue_head *q, struct swait_queue *wait); +extern void prepare_to_swait(struct swait_queue_head *q, struct swait_queue *wait, int state); +extern long prepare_to_swait_event(struct swait_queue_head *q, struct swait_queue *wait, int state); + +extern void __finish_swait(struct swait_queue_head *q, struct swait_queue *wait); +extern void finish_swait(struct swait_queue_head *q, struct swait_queue *wait); + +/* as per ___wait_event() but for swait, therefore "exclusive == 0" */ +#define ___swait_event(wq, condition, state, ret, cmd) \ +({ \ + struct swait_queue __wait; \ + long __ret = ret; \ + \ + INIT_LIST_HEAD(&__wait.task_list); \ + for (;;) { \ + long __int = prepare_to_swait_event(&wq, &__wait, state);\ + \ + if (condition) \ + break; \ + \ + if (___wait_is_interruptible(state) && __int) { \ + __ret = __int; \ + break; \ + } \ + \ + cmd; \ + } \ + finish_swait(&wq, &__wait); \ + __ret; \ +}) + +#define __swait_event(wq, condition) \ + (void)___swait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, \ + schedule()) + +#define swait_event(wq, condition) \ +do { \ + if (condition) \ + break; \ + __swait_event(wq, condition); \ +} while (0) + +#define __swait_event_timeout(wq, condition, timeout) \ + ___swait_event(wq, ___wait_cond_timeout(condition), \ + TASK_UNINTERRUPTIBLE, timeout, \ + __ret = schedule_timeout(__ret)) + +#define swait_event_timeout(wq, condition, timeout) \ +({ \ + long __ret = timeout; \ + if (!___wait_cond_timeout(condition)) \ + __ret = __swait_event_timeout(wq, condition, timeout); \ + __ret; \ +}) + +#define __swait_event_interruptible(wq, condition) \ + ___swait_event(wq, condition, TASK_INTERRUPTIBLE, 0, \ + schedule()) + +#define swait_event_interruptible(wq, condition) \ +({ \ + int __ret = 0; \ + if (!(condition)) \ + __ret = __swait_event_interruptible(wq, condition); \ + __ret; \ +}) + +#define __swait_event_interruptible_timeout(wq, condition, timeout) \ + ___swait_event(wq, ___wait_cond_timeout(condition), \ + TASK_INTERRUPTIBLE, timeout, \ + __ret = schedule_timeout(__ret)) + +#define swait_event_interruptible_timeout(wq, condition, timeout) \ +({ \ + long __ret = timeout; \ + if (!___wait_cond_timeout(condition)) \ + __ret = __swait_event_interruptible_timeout(wq, \ + condition, timeout); \ + __ret; \ +}) + +#endif /* _LINUX_SWAIT_H */ diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 613c29bd6baf..e13a1ace50e9 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -43,6 +43,9 @@ /* Default weight of a bound cooling device */ #define THERMAL_WEIGHT_DEFAULT 0 +/* use value, which < 0K, to indicate an invalid/uninitialized temperature */ +#define THERMAL_TEMP_INVALID -274000 + /* Unit conversion macros */ #define DECI_KELVIN_TO_CELSIUS(t) ({ \ long _t = (t); \ @@ -167,6 +170,7 @@ struct thermal_attr { * @forced_passive: If > 0, temperature at which to switch on all ACPI * processor cooling devices. Currently only used by the * step-wise governor. + * @need_update: if equals 1, thermal_zone_device_update needs to be invoked. * @ops: operations this &thermal_zone_device supports * @tzp: thermal zone parameters * @governor: pointer to the governor for this thermal zone @@ -194,6 +198,7 @@ struct thermal_zone_device { int emul_temperature; int passive; unsigned int forced_passive; + atomic_t need_update; struct thermal_zone_device_ops *ops; struct thermal_zone_params *tzp; struct thermal_governor *governor; diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 696a339c592c..03c7efb60c91 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -14,8 +14,10 @@ * See the file COPYING for more details. */ +#include <linux/smp.h> #include <linux/errno.h> #include <linux/types.h> +#include <linux/cpumask.h> #include <linux/rcupdate.h> #include <linux/static_key.h> @@ -146,6 +148,9 @@ extern void syscall_unregfunc(void); void *it_func; \ void *__data; \ \ + if (!cpu_online(raw_smp_processor_id())) \ + return; \ + \ if (!(cond)) \ return; \ prercu; \ diff --git a/include/linux/tty.h b/include/linux/tty.h index 5e31f1b99037..6b6e811f4575 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -654,6 +654,7 @@ extern long vt_compat_ioctl(struct tty_struct *tty, /* tty_mutex.c */ /* functions for preparation of BKL removal */ extern void __lockfunc tty_lock(struct tty_struct *tty); +extern int tty_lock_interruptible(struct tty_struct *tty); extern void __lockfunc tty_unlock(struct tty_struct *tty); extern void __lockfunc tty_lock_slave(struct tty_struct *tty); extern void __lockfunc tty_unlock_slave(struct tty_struct *tty); diff --git a/include/linux/ucs2_string.h b/include/linux/ucs2_string.h index cbb20afdbc01..bb679b48f408 100644 --- a/include/linux/ucs2_string.h +++ b/include/linux/ucs2_string.h @@ -11,4 +11,8 @@ unsigned long ucs2_strlen(const ucs2_char_t *s); unsigned long ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength); int ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len); +unsigned long ucs2_utf8size(const ucs2_char_t *src); +unsigned long ucs2_as_utf8(u8 *dest, const ucs2_char_t *src, + unsigned long maxlength); + #endif /* _LINUX_UCS2_STRING_H_ */ diff --git a/include/linux/wait-simple.h b/include/linux/wait-simple.h deleted file mode 100644 index f86bca2c41d5..000000000000 --- a/include/linux/wait-simple.h +++ /dev/null @@ -1,207 +0,0 @@ -#ifndef _LINUX_WAIT_SIMPLE_H -#define _LINUX_WAIT_SIMPLE_H - -#include <linux/spinlock.h> -#include <linux/list.h> - -#include <asm/current.h> - -struct swaiter { - struct task_struct *task; - struct list_head node; -}; - -#define DEFINE_SWAITER(name) \ - struct swaiter name = { \ - .task = current, \ - .node = LIST_HEAD_INIT((name).node), \ - } - -struct swait_head { - raw_spinlock_t lock; - struct list_head list; -}; - -#define SWAIT_HEAD_INITIALIZER(name) { \ - .lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \ - .list = LIST_HEAD_INIT((name).list), \ - } - -#define DEFINE_SWAIT_HEAD(name) \ - struct swait_head name = SWAIT_HEAD_INITIALIZER(name) - -extern void __init_swait_head(struct swait_head *h, struct lock_class_key *key); - -#define init_swait_head(swh) \ - do { \ - static struct lock_class_key __key; \ - \ - __init_swait_head((swh), &__key); \ - } while (0) - -/* - * Waiter functions - */ -extern void swait_prepare_locked(struct swait_head *head, struct swaiter *w); -extern void swait_prepare(struct swait_head *head, struct swaiter *w, int state); -extern void swait_finish_locked(struct swait_head *head, struct swaiter *w); -extern void swait_finish(struct swait_head *head, struct swaiter *w); - -/* Check whether a head has waiters enqueued */ -static inline bool swaitqueue_active(struct swait_head *h) -{ - /* Make sure the condition is visible before checking list_empty() */ - smp_mb(); - return !list_empty(&h->list); -} - -/* - * Wakeup functions - */ -extern unsigned int __swait_wake(struct swait_head *head, unsigned int state, unsigned int num); -extern unsigned int __swait_wake_locked(struct swait_head *head, unsigned int state, unsigned int num); - -#define swait_wake(head) __swait_wake(head, TASK_NORMAL, 1) -#define swait_wake_interruptible(head) __swait_wake(head, TASK_INTERRUPTIBLE, 1) -#define swait_wake_all(head) __swait_wake(head, TASK_NORMAL, 0) -#define swait_wake_all_interruptible(head) __swait_wake(head, TASK_INTERRUPTIBLE, 0) - -/* - * Event API - */ -#define __swait_event(wq, condition) \ -do { \ - DEFINE_SWAITER(__wait); \ - \ - for (;;) { \ - swait_prepare(&wq, &__wait, TASK_UNINTERRUPTIBLE); \ - if (condition) \ - break; \ - schedule(); \ - } \ - swait_finish(&wq, &__wait); \ -} while (0) - -/** - * swait_event - sleep until a condition gets true - * @wq: the waitqueue to wait on - * @condition: a C expression for the event to wait for - * - * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the - * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. - * - * wake_up() has to be called after changing any variable that could - * change the result of the wait condition. - */ -#define swait_event(wq, condition) \ -do { \ - if (condition) \ - break; \ - __swait_event(wq, condition); \ -} while (0) - -#define __swait_event_interruptible(wq, condition, ret) \ -do { \ - DEFINE_SWAITER(__wait); \ - \ - for (;;) { \ - swait_prepare(&wq, &__wait, TASK_INTERRUPTIBLE); \ - if (condition) \ - break; \ - if (signal_pending(current)) { \ - ret = -ERESTARTSYS; \ - break; \ - } \ - schedule(); \ - } \ - swait_finish(&wq, &__wait); \ -} while (0) - -#define __swait_event_interruptible_timeout(wq, condition, ret) \ -do { \ - DEFINE_SWAITER(__wait); \ - \ - for (;;) { \ - swait_prepare(&wq, &__wait, TASK_INTERRUPTIBLE); \ - if (condition) \ - break; \ - if (signal_pending(current)) { \ - ret = -ERESTARTSYS; \ - break; \ - } \ - ret = schedule_timeout(ret); \ - if (!ret) \ - break; \ - } \ - swait_finish(&wq, &__wait); \ -} while (0) - -/** - * swait_event_interruptible - sleep until a condition gets true - * @wq: the waitqueue to wait on - * @condition: a C expression for the event to wait for - * - * The process is put to sleep (TASK_INTERRUPTIBLE) until the - * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. - * - * wake_up() has to be called after changing any variable that could - * change the result of the wait condition. - */ -#define swait_event_interruptible(wq, condition) \ -({ \ - int __ret = 0; \ - if (!(condition)) \ - __swait_event_interruptible(wq, condition, __ret); \ - __ret; \ -}) - -#define swait_event_interruptible_timeout(wq, condition, timeout) \ -({ \ - int __ret = timeout; \ - if (!(condition)) \ - __swait_event_interruptible_timeout(wq, condition, __ret); \ - __ret; \ -}) - -#define __swait_event_timeout(wq, condition, ret) \ -do { \ - DEFINE_SWAITER(__wait); \ - \ - for (;;) { \ - swait_prepare(&wq, &__wait, TASK_UNINTERRUPTIBLE); \ - if (condition) \ - break; \ - ret = schedule_timeout(ret); \ - if (!ret) \ - break; \ - } \ - swait_finish(&wq, &__wait); \ -} while (0) - -/** - * swait_event_timeout - sleep until a condition gets true or a timeout elapses - * @wq: the waitqueue to wait on - * @condition: a C expression for the event to wait for - * @timeout: timeout, in jiffies - * - * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the - * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. - * - * wake_up() has to be called after changing any variable that could - * change the result of the wait condition. - * - * The function returns 0 if the @timeout elapsed, and the remaining - * jiffies if the condition evaluated to true before the timeout elapsed. - */ -#define swait_event_timeout(wq, condition, timeout) \ -({ \ - long __ret = timeout; \ - if (!(condition)) \ - __swait_event_timeout(wq, condition, __ret); \ - __ret; \ -}) - -#endif |