xnu-3789.1.32.tar.gz

[apple/xnu.git] / osfmk / kern / sched.h

diff --git a/osfmk/kern/sched.h b/osfmk/kern/sched.h
index 8f87afad2d659fc18c4e81ce0de5a48130d62f4b..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


@@ -143,26 +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 MINPRI_RESERVED                (MAXPRI_RESERVED - (NRQS / 8) + 1)      /* 64 */
+#define MAXPRI_RESERVED                (MINPRI_KERNEL - 1)                             /* 79 */
+#define BASEPRI_GRAPHICS       (MAXPRI_RESERVED - 3)                           /* 76 */
+#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 BASEPRI_DEFAULT                (MAXPRI_USER - (NRQS / 4))                      /* 31 */

-#define MAXPRI_THROTTLE                (MINPRI + 4)                                            /*  4 */
-#define MINPRI_USER                    MINPRI                                                          /*  0 */
+#define MAXPRI_SUPPRESSED      (BASEPRI_DEFAULT - 3)                           /* 28 */
+#define BASEPRI_UTILITY                (BASEPRI_DEFAULT - 11)                          /* 20 */
+#define MAXPRI_THROTTLE                (MINPRI + 4)                                    /*  4 */
+#define MINPRI_USER            MINPRI                                          /*  0 */

 
 

-#ifdef CONFIG_EMBEDDED
-#define DEPRESSPRI     MAXPRI_THROTTLE
-#else
-#define DEPRESSPRI     MINPRI                  /* depress priority */
-#endif
+#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 {


@@ -170,9 +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.
  */


@@ -183,11 +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 */


@@ -195,7 +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 */


@@ -204,15 +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)
 
 /*


@@ -259,10 +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.
  */


@@ -273,12 +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;


@@ -289,22 +311,25 @@ 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 (1 << SCHED_TICK_SHIFT) times per second.
+ *     Age usage  at approximately (1 << SCHED_TICK_SHIFT) times per second
+ *     Aging may be deferred during periods where all processors are idle
+ *     and cumulatively applied during periods of activity.

  */
 #define SCHED_TICK_SHIFT       3
  */
 #define SCHED_TICK_SHIFT       3

+#define SCHED_TICK_MAX_DELTA   (8)

 
 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;
 
 /* Periodic computation of various averages */
 
 extern uint64_t                sched_one_second_interval;
 
 /* Periodic computation of various averages */

-extern void            compute_averages(void);
+extern void            compute_averages(uint64_t);

 
 extern void            compute_averunnable(
                                        void                    *nrun);
 
 extern void            compute_averunnable(
                                        void                    *nrun);


@@ -315,9 +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);
 


@@ -328,16 +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;
+#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_fixed_shift;
 extern int8_t          sched_load_shifts[NRQS];

-#endif
+extern uint32_t                sched_decay_usage_age_factor;
+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;

 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];


@@ -345,25 +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
+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.