diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/kernel.h | 9 | ||||
-rw-r--r-- | include/linux/sched.h | 30 | ||||
-rw-r--r-- | include/linux/u64_stats_sync.h | 45 | ||||
-rw-r--r-- | include/linux/wait.h | 17 |
4 files changed, 59 insertions, 42 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index d96a6118d26a..74fd6f05bc5b 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -259,17 +259,14 @@ static inline void might_fault(void) { } extern struct atomic_notifier_head panic_notifier_list; extern long (*panic_blink)(int state); __printf(1, 2) -void panic(const char *fmt, ...) - __noreturn __cold; +void panic(const char *fmt, ...) __noreturn __cold; void nmi_panic(struct pt_regs *regs, const char *msg); extern void oops_enter(void); extern void oops_exit(void); void print_oops_end_marker(void); extern int oops_may_print(void); -void do_exit(long error_code) - __noreturn; -void complete_and_exit(struct completion *, long) - __noreturn; +void do_exit(long error_code) __noreturn; +void complete_and_exit(struct completion *, long) __noreturn; /* Internal, do not use. */ int __must_check _kstrtoul(const char *s, unsigned int base, unsigned long *res); diff --git a/include/linux/sched.h b/include/linux/sched.h index 98fe95fea30c..f76d75fc9eaf 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -448,6 +448,8 @@ static inline void io_schedule(void) io_schedule_timeout(MAX_SCHEDULE_TIMEOUT); } +void __noreturn do_task_dead(void); + struct nsproxy; struct user_namespace; @@ -1022,7 +1024,8 @@ extern void wake_up_q(struct wake_q_head *head); #define SD_BALANCE_FORK 0x0008 /* Balance on fork, clone */ #define SD_BALANCE_WAKE 0x0010 /* Balance on wakeup */ #define SD_WAKE_AFFINE 0x0020 /* Wake task to waking CPU */ -#define SD_SHARE_CPUCAPACITY 0x0080 /* Domain members share cpu power */ +#define SD_ASYM_CPUCAPACITY 0x0040 /* Groups have different max cpu capacities */ +#define SD_SHARE_CPUCAPACITY 0x0080 /* Domain members share cpu capacity */ #define SD_SHARE_POWERDOMAIN 0x0100 /* Domain members share power domain */ #define SD_SHARE_PKG_RESOURCES 0x0200 /* Domain members share cpu pkg resources */ #define SD_SERIALIZE 0x0400 /* Only a single load balancing instance */ @@ -1064,6 +1067,12 @@ extern int sched_domain_level_max; struct sched_group; +struct sched_domain_shared { + atomic_t ref; + atomic_t nr_busy_cpus; + int has_idle_cores; +}; + struct sched_domain { /* These fields must be setup */ struct sched_domain *parent; /* top domain must be null terminated */ @@ -1094,6 +1103,8 @@ struct sched_domain { u64 max_newidle_lb_cost; unsigned long next_decay_max_lb_cost; + u64 avg_scan_cost; /* select_idle_sibling */ + #ifdef CONFIG_SCHEDSTATS /* load_balance() stats */ unsigned int lb_count[CPU_MAX_IDLE_TYPES]; @@ -1132,6 +1143,7 @@ struct sched_domain { void *private; /* used during construction */ struct rcu_head rcu; /* used during destruction */ }; + struct sched_domain_shared *shared; unsigned int span_weight; /* @@ -1165,6 +1177,7 @@ typedef int (*sched_domain_flags_f)(void); struct sd_data { struct sched_domain **__percpu sd; + struct sched_domain_shared **__percpu sds; struct sched_group **__percpu sg; struct sched_group_capacity **__percpu sgc; }; @@ -2568,7 +2581,7 @@ static inline bool is_idle_task(const struct task_struct *p) return p->pid == 0; } extern struct task_struct *curr_task(int cpu); -extern void set_curr_task(int cpu, struct task_struct *p); +extern void ia64_set_curr_task(int cpu, struct task_struct *p); void yield(void); @@ -3206,7 +3219,11 @@ static inline int signal_pending_state(long state, struct task_struct *p) * cond_resched_lock() will drop the spinlock before scheduling, * cond_resched_softirq() will enable bhs before scheduling. */ +#ifndef CONFIG_PREEMPT extern int _cond_resched(void); +#else +static inline int _cond_resched(void) { return 0; } +#endif #define cond_resched() ({ \ ___might_sleep(__FILE__, __LINE__, 0); \ @@ -3236,6 +3253,15 @@ static inline void cond_resched_rcu(void) #endif } +static inline unsigned long get_preempt_disable_ip(struct task_struct *p) +{ +#ifdef CONFIG_DEBUG_PREEMPT + return p->preempt_disable_ip; +#else + return 0; +#endif +} + /* * Does a critical section need to be broken due to another * task waiting?: (technically does not depend on CONFIG_PREEMPT, diff --git a/include/linux/u64_stats_sync.h b/include/linux/u64_stats_sync.h index d3a2bb712af3..650f3dd6b800 100644 --- a/include/linux/u64_stats_sync.h +++ b/include/linux/u64_stats_sync.h @@ -103,31 +103,42 @@ static inline void u64_stats_update_end_raw(struct u64_stats_sync *syncp) #endif } -static inline unsigned int u64_stats_fetch_begin(const struct u64_stats_sync *syncp) +static inline unsigned int __u64_stats_fetch_begin(const struct u64_stats_sync *syncp) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) return read_seqcount_begin(&syncp->seq); #else -#if BITS_PER_LONG==32 - preempt_disable(); -#endif return 0; #endif } -static inline bool u64_stats_fetch_retry(const struct u64_stats_sync *syncp, +static inline unsigned int u64_stats_fetch_begin(const struct u64_stats_sync *syncp) +{ +#if BITS_PER_LONG==32 && !defined(CONFIG_SMP) + preempt_disable(); +#endif + return __u64_stats_fetch_begin(syncp); +} + +static inline bool __u64_stats_fetch_retry(const struct u64_stats_sync *syncp, unsigned int start) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) return read_seqcount_retry(&syncp->seq, start); #else -#if BITS_PER_LONG==32 - preempt_enable(); -#endif return false; #endif } +static inline bool u64_stats_fetch_retry(const struct u64_stats_sync *syncp, + unsigned int start) +{ +#if BITS_PER_LONG==32 && !defined(CONFIG_SMP) + preempt_enable(); +#endif + return __u64_stats_fetch_retry(syncp, start); +} + /* * In case irq handlers can update u64 counters, readers can use following helpers * - SMP 32bit arches use seqcount protection, irq safe. @@ -136,27 +147,19 @@ static inline bool u64_stats_fetch_retry(const struct u64_stats_sync *syncp, */ static inline unsigned int u64_stats_fetch_begin_irq(const struct u64_stats_sync *syncp) { -#if BITS_PER_LONG==32 && defined(CONFIG_SMP) - return read_seqcount_begin(&syncp->seq); -#else -#if BITS_PER_LONG==32 +#if BITS_PER_LONG==32 && !defined(CONFIG_SMP) local_irq_disable(); #endif - return 0; -#endif + return __u64_stats_fetch_begin(syncp); } static inline bool u64_stats_fetch_retry_irq(const struct u64_stats_sync *syncp, - unsigned int start) + unsigned int start) { -#if BITS_PER_LONG==32 && defined(CONFIG_SMP) - return read_seqcount_retry(&syncp->seq, start); -#else -#if BITS_PER_LONG==32 +#if BITS_PER_LONG==32 && !defined(CONFIG_SMP) local_irq_enable(); #endif - return false; -#endif + return __u64_stats_fetch_retry(syncp, start); } #endif /* _LINUX_U64_STATS_SYNC_H */ diff --git a/include/linux/wait.h b/include/linux/wait.h index c3ff74d764fa..2408e8d5c05c 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -248,6 +248,8 @@ wait_queue_head_t *bit_waitqueue(void *, int); (!__builtin_constant_p(state) || \ state == TASK_INTERRUPTIBLE || state == TASK_KILLABLE) \ +extern void init_wait_entry(wait_queue_t *__wait, int flags); + /* * The below macro ___wait_event() has an explicit shadow of the __ret * variable when used from the wait_event_*() macros. @@ -266,12 +268,7 @@ wait_queue_head_t *bit_waitqueue(void *, int); wait_queue_t __wait; \ long __ret = ret; /* explicit shadow */ \ \ - INIT_LIST_HEAD(&__wait.task_list); \ - if (exclusive) \ - __wait.flags = WQ_FLAG_EXCLUSIVE; \ - else \ - __wait.flags = 0; \ - \ + init_wait_entry(&__wait, exclusive ? WQ_FLAG_EXCLUSIVE : 0); \ for (;;) { \ long __int = prepare_to_wait_event(&wq, &__wait, state);\ \ @@ -280,12 +277,7 @@ wait_queue_head_t *bit_waitqueue(void *, int); \ if (___wait_is_interruptible(state) && __int) { \ __ret = __int; \ - if (exclusive) { \ - abort_exclusive_wait(&wq, &__wait, \ - state, NULL); \ - goto __out; \ - } \ - break; \ + goto __out; \ } \ \ cmd; \ @@ -989,7 +981,6 @@ void prepare_to_wait(wait_queue_head_t *q, wait_queue_t *wait, int state); void prepare_to_wait_exclusive(wait_queue_head_t *q, wait_queue_t *wait, int state); long prepare_to_wait_event(wait_queue_head_t *q, wait_queue_t *wait, int state); void finish_wait(wait_queue_head_t *q, wait_queue_t *wait); -void abort_exclusive_wait(wait_queue_head_t *q, wait_queue_t *wait, unsigned int mode, void *key); long wait_woken(wait_queue_t *wait, unsigned mode, long timeout); int woken_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key); int autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key); |