diff options
author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-10-07 15:10:20 +0200 |
---|---|---|
committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-01-10 09:53:31 +0100 |
commit | c40e45b75eb76d79a05c7fa85c1fa9b5c728a12f (patch) | |
tree | ad4f2519067709f00ab98b3c591186c26dc3a21f /freebsd/sys/sys/callout.h | |
parent | userspace-header-gen.py: Simplify program ports (diff) | |
download | rtems-libbsd-c40e45b75eb76d79a05c7fa85c1fa9b5c728a12f.tar.bz2 |
Update to FreeBSD head 2016-08-23
Git mirror commit 9fe7c416e6abb28b1398fd3e5687099846800cfd.
Diffstat (limited to 'freebsd/sys/sys/callout.h')
-rw-r--r-- | freebsd/sys/sys/callout.h | 76 |
1 files changed, 63 insertions, 13 deletions
diff --git a/freebsd/sys/sys/callout.h b/freebsd/sys/sys/callout.h index 95b9a32b..f58fa587 100644 --- a/freebsd/sys/sys/callout.h +++ b/freebsd/sys/sys/callout.h @@ -43,45 +43,95 @@ #define CALLOUT_LOCAL_ALLOC 0x0001 /* was allocated from callfree */ #define CALLOUT_ACTIVE 0x0002 /* callout is currently active */ #define CALLOUT_PENDING 0x0004 /* callout is waiting for timeout */ -#define CALLOUT_MPSAFE 0x0008 /* callout handler is mp safe */ +#define CALLOUT_MPSAFE 0x0008 /* deprecated */ #define CALLOUT_RETURNUNLOCKED 0x0010 /* handler returns with mtx unlocked */ #define CALLOUT_SHAREDLOCK 0x0020 /* callout lock held in shared mode */ #define CALLOUT_DFRMIGRATION 0x0040 /* callout in deferred migration mode */ +#define CALLOUT_PROCESSED 0x0080 /* callout in wheel or processing list? */ +#define CALLOUT_DIRECT 0x0100 /* allow exec from hw int context */ + +#define C_DIRECT_EXEC 0x0001 /* direct execution of callout */ +#define C_PRELBITS 7 +#define C_PRELRANGE ((1 << C_PRELBITS) - 1) +#define C_PREL(x) (((x) + 1) << 1) +#define C_PRELGET(x) (int)((((x) >> 1) & C_PRELRANGE) - 1) +#define C_HARDCLOCK 0x0100 /* align to hardclock() calls */ +#define C_ABSOLUTE 0x0200 /* event time is absolute. */ +#define C_PRECALC 0x0400 /* event time is pre-calculated. */ struct callout_handle { struct callout *callout; }; -#ifdef _KERNEL -extern int ncallout; +/* Flags for callout_stop_safe() */ +#define CS_DRAIN 0x0001 /* callout_drain(), wait allowed */ +#define CS_EXECUTING 0x0002 /* Positive return value indicates that + the callout was executing */ +#ifdef _KERNEL +/* + * Note the flags field is actually *two* fields. The c_flags + * field is the one that caller operations that may, or may not have + * a lock touches i.e. callout_deactivate(). The other, the c_iflags, + * is the internal flags that *must* be kept correct on which the + * callout system depend on e.g. callout_pending(). + * The c_iflag is used internally by the callout system to determine which + * list the callout is on and track internal state. Callers *should not* + * use the c_flags field directly but should use the macros provided. + * + * The c_iflags field holds internal flags that are protected by internal + * locks of the callout subsystem. The c_flags field holds external flags. + * The caller must hold its own lock while manipulating or reading external + * flags via callout_active(), callout_deactivate(), callout_reset*(), or + * callout_stop() to avoid races. + */ #define callout_active(c) ((c)->c_flags & CALLOUT_ACTIVE) #define callout_deactivate(c) ((c)->c_flags &= ~CALLOUT_ACTIVE) -#define callout_drain(c) _callout_stop_safe(c, 1) +#define callout_drain(c) _callout_stop_safe(c, CS_DRAIN, NULL) void callout_init(struct callout *, int); void _callout_init_lock(struct callout *, struct lock_object *, int); #define callout_init_mtx(c, mtx, flags) \ _callout_init_lock((c), ((mtx) != NULL) ? &(mtx)->lock_object : \ NULL, (flags)) +#define callout_init_rm(c, rm, flags) \ + _callout_init_lock((c), ((rm) != NULL) ? &(rm)->lock_object : \ + NULL, (flags)) #define callout_init_rw(c, rw, flags) \ _callout_init_lock((c), ((rw) != NULL) ? &(rw)->lock_object : \ NULL, (flags)) -#define callout_pending(c) ((c)->c_flags & CALLOUT_PENDING) -int callout_reset_on(struct callout *, int, void (*)(void *), void *, int); +#define callout_pending(c) ((c)->c_iflags & CALLOUT_PENDING) +int callout_reset_sbt_on(struct callout *, sbintime_t, sbintime_t, + void (*)(void *), void *, int, int); +#define callout_reset_sbt(c, sbt, pr, fn, arg, flags) \ + callout_reset_sbt_on((c), (sbt), (pr), (fn), (arg), -1, (flags)) +#define callout_reset_sbt_curcpu(c, sbt, pr, fn, arg, flags) \ + callout_reset_sbt_on((c), (sbt), (pr), (fn), (arg), PCPU_GET(cpuid),\ + (flags)) +#define callout_reset_on(c, to_ticks, fn, arg, cpu) \ + callout_reset_sbt_on((c), tick_sbt * (to_ticks), 0, (fn), (arg), \ + (cpu), C_HARDCLOCK) #define callout_reset(c, on_tick, fn, arg) \ - callout_reset_on((c), (on_tick), (fn), (arg), (c)->c_cpu) + callout_reset_on((c), (on_tick), (fn), (arg), -1) #define callout_reset_curcpu(c, on_tick, fn, arg) \ callout_reset_on((c), (on_tick), (fn), (arg), PCPU_GET(cpuid)) +#define callout_schedule_sbt_on(c, sbt, pr, cpu, flags) \ + callout_reset_sbt_on((c), (sbt), (pr), (c)->c_func, (c)->c_arg, \ + (cpu), (flags)) +#define callout_schedule_sbt(c, sbt, pr, flags) \ + callout_schedule_sbt_on((c), (sbt), (pr), -1, (flags)) +#define callout_schedule_sbt_curcpu(c, sbt, pr, flags) \ + callout_schedule_sbt_on((c), (sbt), (pr), PCPU_GET(cpuid), (flags)) int callout_schedule(struct callout *, int); int callout_schedule_on(struct callout *, int, int); #define callout_schedule_curcpu(c, on_tick) \ callout_schedule_on((c), (on_tick), PCPU_GET(cpuid)) -#define callout_stop(c) _callout_stop_safe(c, 0) -int _callout_stop_safe(struct callout *, int); -void callout_tick(void); -int callout_tickstofirst(int limit); -extern void (*callout_new_inserted)(int cpu, int ticks); - +#define callout_stop(c) _callout_stop_safe(c, 0, NULL) +int _callout_stop_safe(struct callout *, int, void (*)(void *)); +void callout_process(sbintime_t now); +#define callout_async_drain(c, d) \ + _callout_stop_safe(c, 0, d) +void callout_when(sbintime_t sbt, sbintime_t precision, int flags, + sbintime_t *sbt_res, sbintime_t *prec_res); #endif #endif /* _SYS_CALLOUT_H_ */ |