kernel - Remove dsched
[dragonfly.git] / sys / sys / thread.h
CommitLineData
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1/*
2 * SYS/THREAD.H
3 *
4 * Implements the architecture independant portion of the LWKT
5 * subsystem.
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6 *
7 * Types which must already be defined when this header is included by
8 * userland: struct md_thread
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9 */
10
11#ifndef _SYS_THREAD_H_
12#define _SYS_THREAD_H_
13
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14#ifndef _SYS_STDINT_H_
15#include <sys/stdint.h> /* __int types */
16#endif
17#ifndef _SYS_PARAM_H_
18#include <sys/param.h> /* MAXCOMLEN */
19#endif
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20#ifndef _SYS_QUEUE_H_
21#include <sys/queue.h> /* TAILQ_* macros */
22#endif
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23#ifndef _SYS_MSGPORT_H_
24#include <sys/msgport.h> /* lwkt_port */
25#endif
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26#ifndef _SYS_TIME_H_
27#include <sys/time.h> /* struct timeval */
28#endif
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29#ifndef _SYS_LOCK_H
30#include <sys/lock.h>
31#endif
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32#ifndef _SYS_SPINLOCK_H_
33#include <sys/spinlock.h>
34#endif
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35#ifndef _SYS_IOSCHED_H_
36#include <sys/iosched.h>
37#endif
1bd40720 38#include <machine/thread.h>
8a8d5d85 39
f1d1c3fa 40struct globaldata;
ef09c3ed 41struct lwp;
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42struct proc;
43struct thread;
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44struct lwkt_queue;
45struct lwkt_token;
41a01a4d 46struct lwkt_tokref;
96728c05 47struct lwkt_ipiq;
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48struct lwkt_cpu_msg;
49struct lwkt_cpu_port;
3b6b7bd1 50struct lwkt_cpusync;
4fd10eb6 51union sysunion;
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52
53typedef struct lwkt_queue *lwkt_queue_t;
54typedef struct lwkt_token *lwkt_token_t;
41a01a4d 55typedef struct lwkt_tokref *lwkt_tokref_t;
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56typedef struct lwkt_cpu_msg *lwkt_cpu_msg_t;
57typedef struct lwkt_cpu_port *lwkt_cpu_port_t;
96728c05 58typedef struct lwkt_ipiq *lwkt_ipiq_t;
3b6b7bd1 59typedef struct lwkt_cpusync *lwkt_cpusync_t;
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60typedef struct thread *thread_t;
61
62typedef TAILQ_HEAD(lwkt_queue, thread) lwkt_queue;
f1d1c3fa 63
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64/*
65 * Differentiation between kernel threads and user threads. Userland
66 * programs which want to access to kernel structures have to define
67 * _KERNEL_STRUCTURES. This is a kinda safety valve to prevent badly
68 * written user programs from getting an LWKT thread that is neither the
69 * kernel nor the user version.
70 */
71#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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72#ifndef _MACHINE_THREAD_H_
73#include <machine/thread.h> /* md_thread */
74#endif
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75#ifndef _MACHINE_FRAME_H_
76#include <machine/frame.h>
77#endif
78#else
79struct intrframe;
ece04fd0 80#endif
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81
82/*
41a01a4d 83 * Tokens are used to serialize access to information. They are 'soft'
dd55d707 84 * serialization entities that only stay in effect while a thread is
41a01a4d 85 * running. If the thread blocks, other threads can run holding the same
dd55d707 86 * token(s). The tokens are reacquired when the original thread resumes.
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87 *
88 * A thread can depend on its serialization remaining intact through a
89 * preemption. An interrupt which attempts to use the same token as the
90 * thread being preempted will reschedule itself for non-preemptive
91 * operation, so the new token code is capable of interlocking against
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92 * interrupts as well as other cpus. This means that your token can only
93 * be (temporarily) lost if you *explicitly* block.
41a01a4d 94 *
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95 * Tokens are managed through a helper reference structure, lwkt_tokref. Each
96 * thread has a stack of tokref's to keep track of acquired tokens. Multiple
97 * tokref's may reference the same token.
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98 *
99 * Tokens can be held shared or exclusive. An exclusive holder is able
100 * to set the TOK_EXCLUSIVE bit in t_count as long as no bit in the count
101 * mask is set. If unable to accomplish this TOK_EXCLREQ can be set instead
102 * which prevents any new shared acquisitions while the exclusive requestor
103 * spins in the scheduler. A shared holder can bump t_count by the increment
104 * value as long as neither TOK_EXCLUSIVE or TOK_EXCLREQ is set, else spin
105 * in the scheduler.
106 *
107 * Multiple exclusive tokens are handled by treating the additional tokens
108 * as a special case of the shared token, incrementing the count value. This
109 * reduces the complexity of the token release code.
f1d1c3fa 110 */
dd55d707 111
f1d1c3fa 112typedef struct lwkt_token {
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113 long t_count; /* Shared/exclreq/exclusive access */
114 struct lwkt_tokref *t_ref; /* Exclusive ref */
c9aa7a82 115 long t_collisions; /* Collision counter */
b37f18d6 116 const char *t_desc; /* Descriptive name */
7eb611ef 117} lwkt_token;
dd55d707 118
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119#define TOK_EXCLUSIVE 0x00000001 /* Exclusive lock held */
120#define TOK_EXCLREQ 0x00000002 /* Exclusive request pending */
121#define TOK_INCR 4 /* Shared count increment */
122#define TOK_COUNTMASK (~(long)(TOK_EXCLUSIVE|TOK_EXCLREQ))
123
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124/*
125 * Static initialization for a lwkt_token.
3b998fa9 126 */
a3c18566 127#define LWKT_TOKEN_INITIALIZER(name) \
c6fbe95a 128{ \
54341a3b 129 .t_count = 0, \
3b998fa9 130 .t_ref = NULL, \
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131 .t_collisions = 0, \
132 .t_desc = #name \
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133}
134
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135/*
136 * Assert that a particular token is held
137 */
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138#define LWKT_TOKEN_HELD_ANY(tok) _lwkt_token_held_any(tok, curthread)
139#define LWKT_TOKEN_HELD_EXCL(tok) _lwkt_token_held_excl(tok, curthread)
b5d16701 140
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141#define ASSERT_LWKT_TOKEN_HELD(tok) \
142 KKASSERT(LWKT_TOKEN_HELD_ANY(tok))
143
144#define ASSERT_LWKT_TOKEN_HELD_EXCL(tok) \
145 KKASSERT(LWKT_TOKEN_HELD_EXCL(tok))
b5d16701 146
3933a3ab 147#define ASSERT_NO_TOKENS_HELD(td) \
b5d16701 148 KKASSERT((td)->td_toks_stop == &td->td_toks_array[0])
8ed305a4 149
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150/*
151 * Assert that a particular token is held and we are in a hard
152 * code execution section (interrupt, ipi, or hard code section).
153 * Hard code sections are not allowed to block or potentially block.
154 * e.g. lwkt_gettoken() would only be ok if the token were already
155 * held.
156 */
157#define ASSERT_LWKT_TOKEN_HARD(tok) \
158 do { \
159 globaldata_t zgd __debugvar = mycpu; \
160 KKASSERT((tok)->t_ref && \
161 (tok)->t_ref->tr_owner == zgd->gd_curthread && \
162 zgd->gd_intr_nesting_level > 0); \
163 } while(0)
164
165/*
166 * Assert that a particular token is held and we are in a normal
167 * critical section. Critical sections will not be preempted but
168 * can explicitly block (tsleep, lwkt_gettoken, etc).
169 */
170#define ASSERT_LWKT_TOKEN_CRIT(tok) \
171 do { \
172 globaldata_t zgd __debugvar = mycpu; \
173 KKASSERT((tok)->t_ref && \
174 (tok)->t_ref->tr_owner == zgd->gd_curthread && \
175 zgd->gd_curthread->td_critcount > 0); \
176 } while(0)
177
3b998fa9 178struct lwkt_tokref {
41a01a4d 179 lwkt_token_t tr_tok; /* token in question */
54341a3b 180 long tr_count; /* TOK_EXCLUSIVE|TOK_EXCLREQ or 0 */
c6fbe95a 181 struct thread *tr_owner; /* me */
3b998fa9 182};
41a01a4d 183
b12defdc 184#define MAXCPUFIFO 32 /* power of 2 */
96728c05 185#define MAXCPUFIFO_MASK (MAXCPUFIFO - 1)
3b998fa9 186#define LWKT_MAXTOKENS 32 /* max tokens beneficially held by thread */
96728c05 187
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188/*
189 * Always cast to ipifunc_t when registering an ipi. The actual ipi function
190 * is called with both the data and an interrupt frame, but the ipi function
191 * that is registered might only declare a data argument.
192 */
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193typedef void (*ipifunc1_t)(void *arg);
194typedef void (*ipifunc2_t)(void *arg, int arg2);
195typedef void (*ipifunc3_t)(void *arg, int arg2, struct intrframe *frame);
96728c05 196
1997b4c2 197struct lwkt_ipiq {
96728c05 198 int ip_rindex; /* only written by target cpu */
166ec852 199 int ip_xindex; /* written by target, indicates completion */
96728c05 200 int ip_windex; /* only written by source cpu */
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201 struct {
202 ipifunc3_t func;
203 void *arg1;
204 int arg2;
205 char filler[32 - sizeof(int) - sizeof(void *) * 2];
206 } ip_info[MAXCPUFIFO];
1997b4c2 207};
96728c05 208
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209/*
210 * CPU Synchronization structure. See lwkt_cpusync_start() and
211 * lwkt_cpusync_finish() for more information.
212 */
d5b2d319 213typedef void (*cpusync_func_t)(void *arg);
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214
215struct lwkt_cpusync {
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216 cpumask_t cs_mask; /* cpus running the sync */
217 cpumask_t cs_mack; /* mask acknowledge */
218 cpusync_func_t cs_func; /* function to execute */
219 void *cs_data; /* function data */
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220};
221
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222/*
223 * The standard message and queue structure used for communications between
224 * cpus. Messages are typically queued via a machine-specific non-linked
225 * FIFO matrix allowing any cpu to send a message to any other cpu without
226 * blocking.
227 */
228typedef struct lwkt_cpu_msg {
229 void (*cm_func)(lwkt_cpu_msg_t msg); /* primary dispatch function */
230 int cm_code; /* request code if applicable */
231 int cm_cpu; /* reply to cpu */
232 thread_t cm_originator; /* originating thread for wakeup */
233} lwkt_cpu_msg;
234
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235/*
236 * Thread structure. Note that ownership of a thread structure is special
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237 * cased and there is no 'token'. A thread is always owned by the cpu
238 * represented by td_gd, any manipulation of the thread by some other cpu
239 * must be done through cpu_*msg() functions. e.g. you could request
240 * ownership of a thread that way, or hand a thread off to another cpu.
4b5f931b 241 *
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242 * NOTE: td_ucred is synchronized from the p_ucred on user->kernel syscall,
243 * trap, and AST/signal transitions to provide a stable ucred for
244 * (primarily) system calls. This field will be NULL for pure kernel
245 * threads.
f1d1c3fa 246 */
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247struct md_intr_info;
248
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249struct thread {
250 TAILQ_ENTRY(thread) td_threadq;
73e4f7b9 251 TAILQ_ENTRY(thread) td_allq;
ae8e83e6 252 TAILQ_ENTRY(thread) td_sleepq;
ece04fd0 253 lwkt_port td_msgport; /* built-in message port for replies */
ef09c3ed 254 struct lwp *td_lwp; /* (optional) associated lwp */
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255 struct proc *td_proc; /* (optional) associated process */
256 struct pcb *td_pcb; /* points to pcb and top of kstack */
26a0694b 257 struct globaldata *td_gd; /* associated with this cpu */
ae8050a4 258 const char *td_wmesg; /* string name for blockage */
5decebc7 259 const volatile void *td_wchan; /* waiting on channel */
4b5f931b 260 int td_pri; /* 0-31, 31=highest priority (note 1) */
f9235b6d 261 int td_critcount; /* critical section priority */
4643740a 262 u_int td_flags; /* TDF flags */
da5fb9ef 263 int td_wdomain; /* domain for wchan address (typ 0) */
f9235b6d 264 void (*td_preemptable)(struct thread *td, int critcount);
a2a5ad0d 265 void (*td_release)(struct thread *td);
7e1d4bf4 266 char *td_kstack; /* kernel stack */
f470d0c8 267 int td_kstack_size; /* size of kernel stack */
8ad65e08 268 char *td_sp; /* kernel stack pointer for LWKT restore */
cc9b6223 269 thread_t (*td_switch)(struct thread *ntd);
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270 __uint64_t td_uticks; /* Statclock hits in user mode (uS) */
271 __uint64_t td_sticks; /* Statclock hits in system mode (uS) */
272 __uint64_t td_iticks; /* Statclock hits processing intr (uS) */
69d78e99 273 int td_locks; /* lockmgr lock debugging */
3573cf7b 274 void *td_unused01; /* (future I/O scheduler heuristic) */
73e4f7b9 275 int td_refs; /* hold position in gd_tdallq / hold free */
46a3f46d 276 int td_nest_count; /* prevent splz nesting */
85946b6c 277 int td_contended; /* token contention count */
4643740a 278 u_int td_mpflags; /* flags can be set by foreign cpus */
0f7a3396 279 int td_cscount; /* cpu synchronization master */
c75e41b7 280 int td_wakefromcpu; /* who woke me up? */
d992c377 281 int td_upri; /* user priority (sub-priority under td_pri) */
f256b6c0 282 int td_type; /* thread type, TD_TYPE_ */
d0e9385d 283 int td_tracker; /* for callers to debug lock counts */
b5d16701 284 int td_unused03[4]; /* for future fields */
79eae878 285 struct iosched_data td_iosdata; /* Dynamic I/O scheduling data */
41f3429e 286 struct timeval td_start; /* start time for a thread/process */
0cfcada1 287 char td_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */
99df837e 288 struct thread *td_preempted; /* we preempted this thread */
d86a23e0 289 struct ucred *td_ucred; /* synchronized from p_ucred */
a86ce0cd 290 void *td_vmm; /* vmm private data */
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291 lwkt_tokref_t td_toks_have; /* tokens we own */
292 lwkt_tokref_t td_toks_stop; /* tokens we want */
3b998fa9 293 struct lwkt_tokref td_toks_array[LWKT_MAXTOKENS];
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294 int td_fairq_load; /* fairq */
295 int td_fairq_count; /* fairq */
cc9b6223 296 struct globaldata *td_migrate_gd; /* target gd for thread migration */
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297#ifdef DEBUG_CRIT_SECTIONS
298#define CRIT_DEBUG_ARRAY_SIZE 32
299#define CRIT_DEBUG_ARRAY_MASK (CRIT_DEBUG_ARRAY_SIZE - 1)
300 const char *td_crit_debug_array[CRIT_DEBUG_ARRAY_SIZE];
301 int td_crit_debug_index;
302 int td_in_crit_report;
303#endif
85100692 304 struct md_thread td_mach;
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305#ifdef DEBUG_LOCKS
306#define SPINLOCK_DEBUG_ARRAY_SIZE 32
307 int td_spinlock_stack_id[SPINLOCK_DEBUG_ARRAY_SIZE];
308 struct spinlock *td_spinlock_stack[SPINLOCK_DEBUG_ARRAY_SIZE];
309 void *td_spinlock_caller_pc[SPINLOCK_DEBUG_ARRAY_SIZE];
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310
311 /*
312 * Track lockmgr locks held; lk->lk_filename:lk->lk_lineno is the holder
313 */
314#define LOCKMGR_DEBUG_ARRAY_SIZE 8
315 int td_lockmgr_stack_id[LOCKMGR_DEBUG_ARRAY_SIZE];
316 struct lock *td_lockmgr_stack[LOCKMGR_DEBUG_ARRAY_SIZE];
1a474e56 317#endif
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318};
319
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320#define td_toks_base td_toks_array[0]
321#define td_toks_end td_toks_array[LWKT_MAXTOKENS]
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322
323#define TD_TOKS_HELD(td) ((td)->td_toks_stop != &(td)->td_toks_base)
324#define TD_TOKS_NOT_HELD(td) ((td)->td_toks_stop == &(td)->td_toks_base)
325
8ad65e08 326/*
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327 * Thread flags. Note that TDF_RUNNING is cleared on the old thread after
328 * we switch to the new one, which is necessary because LWKTs don't need
329 * to hold the BGL. This flag is used by the exit code and the managed
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330 * thread migration code. Note in addition that preemption will cause
331 * TDF_RUNNING to be cleared temporarily, so any code checking TDF_RUNNING
332 * must also check TDF_PREEMPT_LOCK.
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333 *
334 * LWKT threads stay on their (per-cpu) run queue while running, not to
335 * be confused with user processes which are removed from the user scheduling
336 * run queue while actually running.
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337 *
338 * td_threadq can represent the thread on one of three queues... the LWKT
339 * run queue, a tsleep queue, or an lwkt blocking queue. The LWKT subsystem
340 * does not allow a thread to be scheduled if it already resides on some
341 * queue.
8ad65e08 342 */
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343#define TDF_RUNNING 0x00000001 /* thread still active */
344#define TDF_RUNQ 0x00000002 /* on an LWKT run queue */
345#define TDF_PREEMPT_LOCK 0x00000004 /* I have been preempted */
346#define TDF_PREEMPT_DONE 0x00000008 /* ac preemption complete */
347#define TDF_NOSTART 0x00000010 /* do not schedule on create */
348#define TDF_MIGRATING 0x00000020 /* thread is being migrated */
349#define TDF_SINTR 0x00000040 /* interruptability for 'ps' */
350#define TDF_TSLEEPQ 0x00000080 /* on a tsleep wait queue */
26a0694b 351
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352#define TDF_SYSTHREAD 0x00000100 /* reserve memory may be used */
353#define TDF_ALLOCATED_THREAD 0x00000200 /* objcache allocated thread */
354#define TDF_ALLOCATED_STACK 0x00000400 /* objcache allocated stack */
355#define TDF_VERBOSE 0x00000800 /* verbose on exit */
356#define TDF_DEADLKTREAT 0x00001000 /* special lockmgr treatment */
eb2adbf5 357#define TDF_MARKER 0x00002000 /* tdallq list scan marker */
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358#define TDF_TIMEOUT_RUNNING 0x00004000 /* tsleep timeout race */
359#define TDF_TIMEOUT 0x00008000 /* tsleep timeout */
03aa8d99 360#define TDF_INTTHREAD 0x00010000 /* interrupt thread */
ae8e83e6 361#define TDF_TSLEEP_DESCHEDULED 0x00020000 /* tsleep core deschedule */
8ec60c3f 362#define TDF_BLOCKED 0x00040000 /* Thread is blocked */
a7422615 363#define TDF_PANICWARN 0x00080000 /* panic warning in switch */
344ad853 364#define TDF_BLOCKQ 0x00100000 /* on block queue */
392cd266 365#define TDF_FORCE_SPINPORT 0x00200000
c1102e9f 366#define TDF_EXITING 0x00400000 /* thread exiting */
1b251f0a 367#define TDF_USINGFP 0x00800000 /* thread using fp coproc */
aad81e48 368#define TDF_KERNELFP 0x01000000 /* kernel using fp coproc */
b0da0c88 369#define TDF_DELAYED_WAKEUP 0x02000000
c068fb59 370#define TDF_FIXEDCPU 0x04000000 /* running cpu is fixed */
d992c377 371#define TDF_USERMODE 0x08000000 /* in or entering user mode */
862481e5 372#define TDF_NOFAULT 0x10000000 /* force onfault on fault */
8ad65e08 373
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374#define TDF_MP_STOPREQ 0x00000001 /* suspend_kproc */
375#define TDF_MP_WAKEREQ 0x00000002 /* resume_kproc */
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376#define TDF_MP_EXITWAIT 0x00000004 /* reaper, see lwp_wait() */
377#define TDF_MP_EXITSIG 0x00000008 /* reaper, see lwp_wait() */
a3ef5f2e 378#define TDF_MP_BATCH_DEMARC 0x00000010 /* batch mode handling */
8cee56f4 379#define TDF_MP_DIDYIELD 0x00000020 /* effects scheduling */
4643740a 380
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381#define TD_TYPE_GENERIC 0 /* generic thread */
382#define TD_TYPE_CRYPTO 1 /* crypto thread */
383#define TD_TYPE_NETISR 2 /* netisr thread */
384
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385/*
386 * Thread priorities. Typically only one thread from any given
387 * user process scheduling queue is on the LWKT run queue at a time.
388 * Remember that there is one LWKT run queue per cpu.
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389 *
390 * Critical sections are handled by bumping td_pri above TDPRI_MAX, which
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391 * causes interrupts to be masked as they occur. When this occurs a
392 * rollup flag will be set in mycpu->gd_reqflags.
2df9fa87 393 */
f1d1c3fa 394#define TDPRI_IDLE_THREAD 0 /* the idle thread */
bb6811be 395#define TDPRI_IDLE_WORK 1 /* idle work (page zero, etc) */
50017724 396#define TDPRI_USER_SCHEDULER 2 /* user scheduler helper */
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397#define TDPRI_USER_IDLE 4 /* user scheduler idle */
398#define TDPRI_USER_NORM 6 /* user scheduler normal */
399#define TDPRI_USER_REAL 8 /* user scheduler real time */
9ae9ee8d 400#define TDPRI_KERN_LPSCHED 9 /* scheduler helper for userland sch */
f1d1c3fa 401#define TDPRI_KERN_USER 10 /* kernel / block in syscall */
26a0694b 402#define TDPRI_KERN_DAEMON 12 /* kernel daemon (pageout, etc) */
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403#define TDPRI_SOFT_NORM 14 /* kernel / normal */
404#define TDPRI_SOFT_TIMER 16 /* kernel / timer */
ae8050a4 405#define TDPRI_EXITING 19 /* exiting thread */
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406#define TDPRI_INT_SUPPORT 20 /* kernel / high priority support */
407#define TDPRI_INT_LOW 27 /* low priority interrupt */
408#define TDPRI_INT_MED 28 /* medium priority interrupt */
409#define TDPRI_INT_HIGH 29 /* high priority interrupt */
410#define TDPRI_MAX 31
411
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412#define LWKT_THREAD_STACK (UPAGES * PAGE_SIZE)
413
f9235b6d 414#define IN_CRITICAL_SECT(td) ((td)->td_critcount)
f8c3996b 415
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416#ifdef _KERNEL
417
418/*
419 * Global tokens
420 */
b5d16701 421extern struct lwkt_token mp_token;
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422extern struct lwkt_token pmap_token;
423extern struct lwkt_token dev_token;
d63ddd9c 424extern struct lwkt_token vm_token;
d39d3c43 425extern struct lwkt_token vmspace_token;
d63ddd9c 426extern struct lwkt_token kvm_token;
a8d3ab53 427extern struct lwkt_token sigio_token;
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428extern struct lwkt_token tty_token;
429extern struct lwkt_token vnode_token;
f635d174 430extern struct lwkt_token revoke_token;
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431
432/*
433 * Procedures
434 */
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435extern struct thread *lwkt_alloc_thread(struct thread *, int, int, int);
436extern void lwkt_init_thread(struct thread *, void *, int, int,
437 struct globaldata *);
e6546af9 438extern void lwkt_set_interrupt_support_thread(void);
fcefa6f2 439extern void lwkt_set_comm(thread_t, const char *, ...) __printflike(2, 3);
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440extern void lwkt_free_thread(struct thread *);
441extern void lwkt_gdinit(struct globaldata *);
8ad65e08 442extern void lwkt_switch(void);
cc9b6223 443extern void lwkt_switch_return(struct thread *);
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444extern void lwkt_preempt(thread_t, int);
445extern void lwkt_schedule(thread_t);
361d01dd 446extern void lwkt_schedule_noresched(thread_t);
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447extern void lwkt_schedule_self(thread_t);
448extern void lwkt_deschedule(thread_t);
449extern void lwkt_deschedule_self(thread_t);
f1d1c3fa 450extern void lwkt_yield(void);
40504122 451extern void lwkt_yield_quick(void);
3824f392 452extern void lwkt_user_yield(void);
b9665ad7
SW
453extern void lwkt_hold(thread_t);
454extern void lwkt_rele(thread_t);
3824f392 455extern void lwkt_passive_release(thread_t);
4a28fe22 456extern void lwkt_maybe_splz(thread_t);
b9665ad7 457
3b998fa9 458extern void lwkt_gettoken(lwkt_token_t);
54341a3b 459extern void lwkt_gettoken_shared(lwkt_token_t);
4a28fe22 460extern void lwkt_gettoken_hard(lwkt_token_t);
3b998fa9
MD
461extern int lwkt_trytoken(lwkt_token_t);
462extern void lwkt_reltoken(lwkt_token_t);
4a28fe22 463extern void lwkt_reltoken_hard(lwkt_token_t);
b5d16701 464extern int lwkt_cnttoken(lwkt_token_t, thread_t);
b12defdc 465extern int lwkt_getalltokens(thread_t, int);
b9665ad7 466extern void lwkt_relalltokens(thread_t);
a3c18566 467extern void lwkt_token_init(lwkt_token_t, const char *);
b9665ad7 468extern void lwkt_token_uninit(lwkt_token_t);
41a01a4d
MD
469
470extern void lwkt_token_pool_init(void);
c6fbe95a 471extern lwkt_token_t lwkt_token_pool_lookup(void *);
3b998fa9 472extern lwkt_token_t lwkt_getpooltoken(void *);
177e553a 473extern void lwkt_relpooltoken(void *);
41a01a4d 474
d79f0a1a
VS
475extern void lwkt_token_swap(void);
476
b9665ad7 477extern void lwkt_setpri(thread_t, int);
03bd0a5e 478extern void lwkt_setpri_initial(thread_t, int);
b9665ad7 479extern void lwkt_setpri_self(int);
85946b6c 480extern void lwkt_schedulerclock(thread_t td);
b9665ad7
SW
481extern void lwkt_setcpu_self(struct globaldata *);
482extern void lwkt_migratecpu(int);
b8a98473 483
52eedfb5
MD
484extern void lwkt_giveaway(struct thread *);
485extern void lwkt_acquire(struct thread *);
b9665ad7
SW
486extern int lwkt_send_ipiq3(struct globaldata *, ipifunc3_t, void *, int);
487extern int lwkt_send_ipiq3_passive(struct globaldata *, ipifunc3_t,
488 void *, int);
489extern int lwkt_send_ipiq3_nowait(struct globaldata *, ipifunc3_t,
490 void *, int);
491extern int lwkt_send_ipiq3_bycpu(int, ipifunc3_t, void *, int);
492extern int lwkt_send_ipiq3_mask(cpumask_t, ipifunc3_t, void *, int);
493extern void lwkt_wait_ipiq(struct globaldata *, int);
494extern int lwkt_seq_ipiq(struct globaldata *);
96728c05 495extern void lwkt_process_ipiq(void);
b9665ad7 496extern void lwkt_process_ipiq_frame(struct intrframe *);
b8a98473 497extern void lwkt_smp_stopped(void);
6c92c1f2 498extern void lwkt_synchronize_ipiqs(const char *);
b8a98473 499
d5b2d319 500/* lwkt_cpusync_init() - inline function in sys/thread2.h */
b9665ad7 501extern void lwkt_cpusync_simple(cpumask_t, cpusync_func_t, void *);
d5b2d319
MD
502extern void lwkt_cpusync_interlock(lwkt_cpusync_t);
503extern void lwkt_cpusync_deinterlock(lwkt_cpusync_t);
3a24972f 504extern void lwkt_cpusync_quick(lwkt_cpusync_t);
b8a98473 505
4a28fe22 506extern void crit_panic(void) __dead2;
553ea3c8 507extern struct lwp *lwkt_preempted_proc(void);
4b5f931b 508
b9665ad7 509extern int lwkt_create (void (*func)(void *), void *, struct thread **,
fcefa6f2
SW
510 struct thread *, int, int,
511 const char *, ...) __printflike(7, 8);
b153f746 512extern void lwkt_exit (void) __dead2;
e56e4dea 513extern void lwkt_remove_tdallq (struct thread *);
99df837e 514
2df9fa87
MD
515#endif
516
c9aa7a82
MD
517#endif
518