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[apple/xnu.git] / osfmk / kern / sched.h
diff --git a/osfmk/kern/sched.h b/osfmk/kern/sched.h
index 319da1fe07369058289646de5fa3de56b32384a1..f1225c9d2177416cb23c0ff49864fc3768b9ddb9 100644 (file)
--- a/osfmk/kern/sched.h
+++ b/osfmk/kern/sched.h
@@ -70,17 +70,18 @@
 #include <mach/policy.h>
 #include <kern/kern_types.h>
 #include <kern/queue.h>
 #include <mach/policy.h>
 #include <kern/kern_types.h>
 #include <kern/queue.h>
-#include <kern/lock.h>
 #include <kern/macro_help.h>
 #include <kern/timer_call.h>
 #include <kern/ast.h>
 #include <kern/macro_help.h>
 #include <kern/timer_call.h>
 #include <kern/ast.h>
+#include <kern/kalloc.h>
+#include <kern/bits.h>
 
 #define        NRQS            128                             /* 128 levels per run queue */
 
 #define        NRQS            128                             /* 128 levels per run queue */
-#define NRQBM          (NRQS / 32)             /* number of words per bit map */
 
 #define MAXPRI         (NRQS-1)
 
 #define MAXPRI         (NRQS-1)
-#define MINPRI         IDLEPRI                 /* lowest legal priority schedulable */
-#define        IDLEPRI         0                               /* idle thread priority */
+#define MINPRI         0                               /* lowest legal priority schedulable */
+#define        IDLEPRI         MINPRI                          /* idle thread priority */
+#define        NOPRI           -1
 
 /*
  *     High-level priority assignments
 
 /*
  *     High-level priority assignments
@@ -143,24 +144,27 @@
 #define BASEPRI_REALTIME       (MAXPRI - (NRQS / 4) + 1)                       /* 96 */
 
 #define MAXPRI_KERNEL          (BASEPRI_REALTIME - 1)                          /* 95 */
 #define BASEPRI_REALTIME       (MAXPRI - (NRQS / 4) + 1)                       /* 96 */
 
 #define MAXPRI_KERNEL          (BASEPRI_REALTIME - 1)                          /* 95 */
-#define BASEPRI_PREEMPT                (MAXPRI_KERNEL - 2)                                     /* 93 */
-#define BASEPRI_KERNEL         (MINPRI_KERNEL + 1)                                     /* 81 */
-#define MINPRI_KERNEL          (MAXPRI_KERNEL - (NRQS / 8) + 1)        /* 80 */
+#define BASEPRI_PREEMPT                (MAXPRI_KERNEL - 2)                             /* 93 */
+#define BASEPRI_KERNEL         (MINPRI_KERNEL + 1)                             /* 81 */
+#define MINPRI_KERNEL          (MAXPRI_KERNEL - (NRQS / 8) + 1)                /* 80 */
 
 
-#define MAXPRI_RESERVED                (MINPRI_KERNEL - 1)                                     /* 79 */
+#define MAXPRI_RESERVED                (MINPRI_KERNEL - 1)                             /* 79 */
 #define BASEPRI_GRAPHICS       (MAXPRI_RESERVED - 3)                           /* 76 */
 #define BASEPRI_GRAPHICS       (MAXPRI_RESERVED - 3)                           /* 76 */
-#define MINPRI_RESERVED                (MAXPRI_RESERVED - (NRQS / 8) + 1)      /* 64 */
+#define MINPRI_RESERVED                (MAXPRI_RESERVED - (NRQS / 8) + 1)              /* 64 */
 
 
-#define MAXPRI_USER                    (MINPRI_RESERVED - 1)                           /* 63 */
+#define MAXPRI_USER            (MINPRI_RESERVED - 1)                           /* 63 */
 #define BASEPRI_CONTROL                (BASEPRI_DEFAULT + 17)                          /* 48 */
 #define BASEPRI_FOREGROUND     (BASEPRI_DEFAULT + 16)                          /* 47 */
 #define BASEPRI_BACKGROUND     (BASEPRI_DEFAULT + 15)                          /* 46 */
 #define BASEPRI_CONTROL                (BASEPRI_DEFAULT + 17)                          /* 48 */
 #define BASEPRI_FOREGROUND     (BASEPRI_DEFAULT + 16)                          /* 47 */
 #define BASEPRI_BACKGROUND     (BASEPRI_DEFAULT + 15)                          /* 46 */
+#define BASEPRI_USER_INITIATED (BASEPRI_DEFAULT +  6)                          /* 37 */
 #define BASEPRI_DEFAULT                (MAXPRI_USER - (NRQS / 4))                      /* 31 */
 #define MAXPRI_SUPPRESSED      (BASEPRI_DEFAULT - 3)                           /* 28 */
 #define BASEPRI_DEFAULT                (MAXPRI_USER - (NRQS / 4))                      /* 31 */
 #define MAXPRI_SUPPRESSED      (BASEPRI_DEFAULT - 3)                           /* 28 */
-#define MAXPRI_THROTTLE                (MINPRI + 4)                                            /*  4 */
-#define MINPRI_USER                    MINPRI                                                          /*  0 */
+#define BASEPRI_UTILITY                (BASEPRI_DEFAULT - 11)                          /* 20 */
+#define MAXPRI_THROTTLE                (MINPRI + 4)                                    /*  4 */
+#define MINPRI_USER            MINPRI                                          /*  0 */
 
 
-#define DEPRESSPRI     MINPRI                  /* depress priority */
+#define DEPRESSPRI             MINPRI                  /* depress priority */
+#define MAXPRI_PROMOTE         (MAXPRI_KERNEL)         /* ceiling for mutex promotion */
 
 /* Type used for thread->sched_mode and saved_mode */
 typedef enum {
 
 /* Type used for thread->sched_mode and saved_mode */
 typedef enum {
@@ -168,9 +172,18 @@ typedef enum {
        TH_MODE_REALTIME,                                       /* time constraints supplied */
        TH_MODE_FIXED,                                          /* use fixed priorities, no decay */
        TH_MODE_TIMESHARE,                                      /* use timesharing algorithm */
        TH_MODE_REALTIME,                                       /* time constraints supplied */
        TH_MODE_FIXED,                                          /* use fixed priorities, no decay */
        TH_MODE_TIMESHARE,                                      /* use timesharing algorithm */
-       TH_MODE_FAIRSHARE                                       /* use fair-share scheduling */         
 } sched_mode_t;
 
 } sched_mode_t;
 
+/* Buckets used for load calculation */
+typedef enum {
+       TH_BUCKET_RUN = 0,      /* All runnable threads */
+       TH_BUCKET_FIXPRI,       /* Fixed-priority */
+       TH_BUCKET_SHARE_FG,     /* Timeshare thread above BASEPRI_UTILITY */
+       TH_BUCKET_SHARE_UT,     /* Timeshare thread between BASEPRI_UTILITY and MAXPRI_THROTTLE */
+       TH_BUCKET_SHARE_BG,     /* Timeshare thread between MAXPRI_THROTTLE and MINPRI */
+       TH_BUCKET_MAX,
+} sched_bucket_t;
+
 /*
  *     Macro to check for invalid priorities.
  */
 /*
  *     Macro to check for invalid priorities.
  */
@@ -181,11 +194,11 @@ struct runq_stats {
        uint64_t                                last_change_timestamp;
 };
 
        uint64_t                                last_change_timestamp;
 };
 
-#if defined(CONFIG_SCHED_TRADITIONAL) || defined(CONFIG_SCHED_PROTO) || defined(CONFIG_SCHED_FIXEDPRIORITY)
+#if defined(CONFIG_SCHED_TIMESHARE_CORE) || defined(CONFIG_SCHED_PROTO)
 
 struct run_queue {
        int                                     highq;                          /* highest runnable queue */
 
 struct run_queue {
        int                                     highq;                          /* highest runnable queue */
-       int                                     bitmap[NRQBM];          /* run queue bitmap array */
+       bitmap_t                                bitmap[BITMAP_LEN(NRQS)];       /* run queue bitmap array */
        int                                     count;                          /* # of threads total */
        int                                     urgency;                        /* level of preemption urgency */
        queue_head_t            queues[NRQS];           /* one for each priority */
        int                                     count;                          /* # of threads total */
        int                                     urgency;                        /* level of preemption urgency */
        queue_head_t            queues[NRQS];           /* one for each priority */
@@ -193,7 +206,21 @@ struct run_queue {
        struct runq_stats       runq_stats;
 };
 
        struct runq_stats       runq_stats;
 };
 
-#endif /* defined(CONFIG_SCHED_TRADITIONAL) || defined(CONFIG_SCHED_PROTO) || defined(CONFIG_SCHED_FIXEDPRIORITY) */
+inline static void
+rq_bitmap_set(bitmap_t *map, u_int n)
+{
+       assert(n < NRQS);       
+       bitmap_set(map, n);
+}
+
+inline static void
+rq_bitmap_clear(bitmap_t *map, u_int n)
+{
+       assert(n < NRQS);       
+       bitmap_clear(map, n);
+}
+
+#endif /* defined(CONFIG_SCHED_TIMESHARE_CORE) || defined(CONFIG_SCHED_PROTO) */
 
 struct rt_queue {
        int                                     count;                          /* # of threads total */
 
 struct rt_queue {
        int                                     count;                          /* # of threads total */
@@ -202,15 +229,6 @@ struct rt_queue {
        struct runq_stats       runq_stats;
 };
 
        struct runq_stats       runq_stats;
 };
 
-#if defined(CONFIG_SCHED_TRADITIONAL) || defined(CONFIG_SCHED_PROTO) || defined(CONFIG_SCHED_FIXEDPRIORITY)
-struct fairshare_queue {
-       int                                     count;                          /* # of threads total */
-       queue_head_t            queue;                          /* all runnable threads demoted to fairshare scheduling */
-       
-       struct runq_stats       runq_stats;
-};
-#endif
-
 #if defined(CONFIG_SCHED_GRRR_CORE)
 
 /*
 #if defined(CONFIG_SCHED_GRRR_CORE)
 
 /*
@@ -257,10 +275,15 @@ struct grrr_run_queue {
 
 #endif /* defined(CONFIG_SCHED_GRRR_CORE) */
 
 
 #endif /* defined(CONFIG_SCHED_GRRR_CORE) */
 
-#define first_timeslice(processor)             ((processor)->timeslice > 0)
-
 extern struct rt_queue         rt_runq;
 
 extern struct rt_queue         rt_runq;
 
+#if defined(CONFIG_SCHED_MULTIQ)
+sched_group_t   sched_group_create(void);
+void            sched_group_destroy(sched_group_t sched_group);
+#endif /* defined(CONFIG_SCHED_MULTIQ) */
+
+
+
 /*
  *     Scheduler routines.
  */
 /*
  *     Scheduler routines.
  */
@@ -271,12 +294,13 @@ extern void               thread_quantum_expire(
                                        timer_call_param_t      thread);
 
 /* Context switch check for current processor */
                                        timer_call_param_t      thread);
 
 /* Context switch check for current processor */
-extern ast_t   csw_check(processor_t           processor);
+extern ast_t   csw_check(processor_t           processor,
+                                               ast_t                   check_reason);
 
 
-#if defined(CONFIG_SCHED_TRADITIONAL)
+#if defined(CONFIG_SCHED_TIMESHARE_CORE)
 extern uint32_t        std_quantum, min_std_quantum;
 extern uint32_t        std_quantum_us;
 extern uint32_t        std_quantum, min_std_quantum;
 extern uint32_t        std_quantum_us;
-#endif
+#endif /* CONFIG_SCHED_TIMESHARE_CORE */
 
 extern uint32_t thread_depress_time;
 extern uint32_t default_timeshare_computation;
 
 extern uint32_t thread_depress_time;
 extern uint32_t default_timeshare_computation;
@@ -287,7 +311,7 @@ extern uint32_t     max_rt_quantum, min_rt_quantum;
 extern int default_preemption_rate;
 extern int default_bg_preemption_rate;
 
 extern int default_preemption_rate;
 extern int default_bg_preemption_rate;
 
-#if defined(CONFIG_SCHED_TRADITIONAL)
+#if defined(CONFIG_SCHED_TIMESHARE_CORE)
 
 /*
  *     Age usage  at approximately (1 << SCHED_TICK_SHIFT) times per second
 
 /*
  *     Age usage  at approximately (1 << SCHED_TICK_SHIFT) times per second
@@ -300,7 +324,7 @@ extern int default_bg_preemption_rate;
 extern unsigned                sched_tick;
 extern uint32_t                sched_tick_interval;
 
 extern unsigned                sched_tick;
 extern uint32_t                sched_tick_interval;
 
-#endif /* CONFIG_SCHED_TRADITIONAL */
+#endif /* CONFIG_SCHED_TIMESHARE_CORE */
 
 extern uint64_t                sched_one_second_interval;
 
 
 extern uint64_t                sched_one_second_interval;
 
@@ -316,9 +340,6 @@ extern void         compute_stack_target(
 extern void            compute_memory_pressure(
                                        void                    *arg);
 
 extern void            compute_memory_pressure(
                                        void                    *arg);
 
-extern void            compute_zone_gc_throttle(
-                                       void                    *arg);
-
 extern void            compute_pageout_gc_throttle(
                                        void                    *arg);
 
 extern void            compute_pageout_gc_throttle(
                                        void                    *arg);
 
@@ -329,21 +350,21 @@ extern void               compute_pmap_gc_throttle(
  *     Conversion factor from usage
  *     to priority.
  */
  *     Conversion factor from usage
  *     to priority.
  */
-#if defined(CONFIG_SCHED_TRADITIONAL)
-extern uint32_t                sched_pri_shift;
-extern uint32_t                sched_background_pri_shift;
-extern uint32_t                sched_combined_fgbg_pri_shift;
+#if defined(CONFIG_SCHED_TIMESHARE_CORE)
+
+#define MAX_LOAD (NRQS - 1)
+extern uint32_t                sched_pri_shifts[TH_BUCKET_MAX];
 extern uint32_t                sched_fixed_shift;
 extern int8_t          sched_load_shifts[NRQS];
 extern uint32_t                sched_decay_usage_age_factor;
 extern uint32_t                sched_fixed_shift;
 extern int8_t          sched_load_shifts[NRQS];
 extern uint32_t                sched_decay_usage_age_factor;
-extern uint32_t                sched_use_combined_fgbg_decay;
-void sched_traditional_consider_maintenance(uint64_t);
-#endif
+void sched_timeshare_consider_maintenance(uint64_t ctime);
+#endif /* CONFIG_SCHED_TIMESHARE_CORE */
+
+void sched_consider_recommended_cores(uint64_t ctime, thread_t thread);
 
 extern int32_t         sched_poll_yield_shift;
 extern uint64_t                sched_safe_duration;
 
 
 extern int32_t         sched_poll_yield_shift;
 extern uint64_t                sched_safe_duration;
 
-extern uint32_t                sched_run_count, sched_share_count, sched_background_count;
 extern uint32_t                sched_load_average, sched_mach_factor;
 
 extern uint32_t                avenrun[3], mach_factor[3];
 extern uint32_t                sched_load_average, sched_mach_factor;
 
 extern uint32_t                avenrun[3], mach_factor[3];
@@ -351,35 +372,10 @@ extern uint32_t           avenrun[3], mach_factor[3];
 extern uint64_t                max_unsafe_computation;
 extern uint64_t                max_poll_computation;
 
 extern uint64_t                max_unsafe_computation;
 extern uint64_t                max_poll_computation;
 
-#define sched_run_incr()                       \
-MACRO_BEGIN                                    \
-         hw_atomic_add(&sched_run_count, 1);   \
-MACRO_END
-
-#define sched_run_decr()                       \
-MACRO_BEGIN                                    \
-       hw_atomic_sub(&sched_run_count, 1);     \
-MACRO_END
+extern volatile uint32_t sched_run_buckets[TH_BUCKET_MAX];
 
 
-#define sched_share_incr()                     \
-MACRO_BEGIN                                                                                    \
-       (void)hw_atomic_add(&sched_share_count, 1);             \
-MACRO_END
-
-#define sched_share_decr()                     \
-MACRO_BEGIN                                                                                    \
-       (void)hw_atomic_sub(&sched_share_count, 1);             \
-MACRO_END
-
-#define sched_background_incr()                                                 \
-MACRO_BEGIN                                                                                     \
-       (void)hw_atomic_add(&sched_background_count, 1); \
-MACRO_END
-
-#define sched_background_decr()                                                 \
-MACRO_BEGIN                                                                                     \
-       (void)hw_atomic_sub(&sched_background_count, 1); \
-MACRO_END
+extern uint32_t sched_run_incr(thread_t thread);
+extern uint32_t sched_run_decr(thread_t thread);
 
 /*
  *     thread_timer_delta macro takes care of both thread timers.
 
 /*
  *     thread_timer_delta macro takes care of both thread timers.
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