diff options
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 36ae08ca0c62..074ad4ef3d81 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -49,6 +49,7 @@ #include <linux/tracepoint-defs.h> #include <linux/unwind_deferred_types.h> #include <asm/kmap_size.h> +#include <linux/time64.h> #ifndef COMPILE_OFFSETS #include <generated/rq-offsets.h> #endif @@ -86,6 +87,7 @@ struct signal_struct; struct task_delay_info; struct task_group; struct task_struct; +struct timespec64; struct user_event_mm; #include <linux/sched/ext.h> @@ -435,6 +437,9 @@ struct sched_info { /* When were we last queued to run? */ unsigned long long last_queued; + /* Timestamp of max time spent waiting on a runqueue: */ + struct timespec64 max_run_delay_ts; + #endif /* CONFIG_SCHED_INFO */ }; @@ -1410,6 +1415,10 @@ struct task_struct { struct page_frag task_frag; +#ifdef CONFIG_ARCH_HAS_LAZY_MMU_MODE + struct lazy_mmu_state lazy_mmu_state; +#endif + #ifdef CONFIG_TASK_DELAY_ACCT struct task_delay_info *delays; #endif @@ -1693,6 +1702,47 @@ static inline char task_state_to_char(struct task_struct *tsk) return task_index_to_char(task_state_index(tsk)); } +#ifdef CONFIG_ARCH_HAS_LAZY_MMU_MODE +/** + * __task_lazy_mmu_mode_active() - Test the lazy MMU mode state for a task. + * @tsk: The task to check. + * + * Test whether @tsk has its lazy MMU mode state set to active (i.e. enabled + * and not paused). + * + * This function only considers the state saved in task_struct; to test whether + * current actually is in lazy MMU mode, is_lazy_mmu_mode_active() should be + * used instead. + * + * This function is intended for architectures that implement the lazy MMU + * mode; it must not be called from generic code. + */ +static inline bool __task_lazy_mmu_mode_active(struct task_struct *tsk) +{ + struct lazy_mmu_state *state = &tsk->lazy_mmu_state; + + return state->enable_count > 0 && state->pause_count == 0; +} + +/** + * is_lazy_mmu_mode_active() - Test whether we are currently in lazy MMU mode. + * + * Test whether the current context is in lazy MMU mode. This is true if both: + * 1. We are not in interrupt context + * 2. Lazy MMU mode is active for the current task + * + * This function is intended for architectures that implement the lazy MMU + * mode; it must not be called from generic code. + */ +static inline bool is_lazy_mmu_mode_active(void) +{ + if (in_interrupt()) + return false; + + return __task_lazy_mmu_mode_active(current); +} +#endif + extern struct pid *cad_pid; /* |