Author: kib Date: Sun Jun 5 17:04:03 2016 New Revision: 301456 URL: https://svnweb.freebsd.org/changeset/base/301456
Log: Get rid of struct proc p_sched and struct thread td_sched pointers. p_sched is unused. The struct td_sched is always co-allocated with the struct thread, except for the thread0. Avoid useless indirection, instead calculate td_sched location using simple pointer arithmetic in td_get_sched(9). For thread0, which is statically allocated, create a structure to emulate layout of the dynamic allocation. Reviewed by: jhb (previous version) Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D6711 Modified: head/sys/kern/init_main.c head/sys/kern/kern_fork.c head/sys/kern/kern_proc.c head/sys/kern/kern_synch.c head/sys/kern/kern_thread.c head/sys/kern/sched_4bsd.c head/sys/kern/sched_ule.c head/sys/mips/mips/locore.S head/sys/sys/proc.h Modified: head/sys/kern/init_main.c ============================================================================== --- head/sys/kern/init_main.c Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/kern/init_main.c Sun Jun 5 17:04:03 2016 (r301456) @@ -99,7 +99,7 @@ void mi_startup(void); /* Should be e static struct session session0; static struct pgrp pgrp0; struct proc proc0; -struct thread thread0 __aligned(16); +struct thread0_storage thread0_st __aligned(16); struct vmspace vmspace0; struct proc *initproc; Modified: head/sys/kern/kern_fork.c ============================================================================== --- head/sys/kern/kern_fork.c Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/kern/kern_fork.c Sun Jun 5 17:04:03 2016 (r301456) @@ -1011,7 +1011,7 @@ fork_exit(void (*callout)(void *, struct KASSERT(p->p_state == PRS_NORMAL, ("executing process is still new")); CTR4(KTR_PROC, "fork_exit: new thread %p (td_sched %p, pid %d, %s)", - td, td->td_sched, p->p_pid, td->td_name); + td, td_get_sched(td), p->p_pid, td->td_name); sched_fork_exit(td); /* Modified: head/sys/kern/kern_proc.c ============================================================================== --- head/sys/kern/kern_proc.c Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/kern/kern_proc.c Sun Jun 5 17:04:03 2016 (r301456) @@ -237,7 +237,6 @@ proc_init(void *mem, int size, int flags p = (struct proc *)mem; SDT_PROBE3(proc, , init, entry, p, size, flags); - p->p_sched = (struct p_sched *)&p[1]; mtx_init(&p->p_mtx, "process lock", NULL, MTX_DEF | MTX_DUPOK | MTX_NEW); mtx_init(&p->p_slock, "process slock", NULL, MTX_SPIN | MTX_NEW); mtx_init(&p->p_statmtx, "pstatl", NULL, MTX_SPIN | MTX_NEW); Modified: head/sys/kern/kern_synch.c ============================================================================== --- head/sys/kern/kern_synch.c Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/kern/kern_synch.c Sun Jun 5 17:04:03 2016 (r301456) @@ -441,7 +441,7 @@ mi_switch(int flags, struct thread *newt PCPU_INC(cnt.v_swtch); PCPU_SET(switchticks, ticks); CTR4(KTR_PROC, "mi_switch: old thread %ld (td_sched %p, pid %ld, %s)", - td->td_tid, td->td_sched, td->td_proc->p_pid, td->td_name); + td->td_tid, td_get_sched(td), td->td_proc->p_pid, td->td_name); #if (KTR_COMPILE & KTR_SCHED) != 0 if (TD_IS_IDLETHREAD(td)) KTR_STATE1(KTR_SCHED, "thread", sched_tdname(td), "idle", @@ -457,7 +457,7 @@ mi_switch(int flags, struct thread *newt "prio:%d", td->td_priority); CTR4(KTR_PROC, "mi_switch: new thread %ld (td_sched %p, pid %ld, %s)", - td->td_tid, td->td_sched, td->td_proc->p_pid, td->td_name); + td->td_tid, td_get_sched(td), td->td_proc->p_pid, td->td_name); /* * If the last thread was exiting, finish cleaning it up. Modified: head/sys/kern/kern_thread.c ============================================================================== --- head/sys/kern/kern_thread.c Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/kern/kern_thread.c Sun Jun 5 17:04:03 2016 (r301456) @@ -211,7 +211,6 @@ thread_init(void *mem, int size, int fla td->td_turnstile = turnstile_alloc(); td->td_rlqe = NULL; EVENTHANDLER_INVOKE(thread_init, td); - td->td_sched = (struct td_sched *)&td[1]; umtx_thread_init(td); td->td_kstack = 0; td->td_sel = NULL; Modified: head/sys/kern/sched_4bsd.c ============================================================================== --- head/sys/kern/sched_4bsd.c Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/kern/sched_4bsd.c Sun Jun 5 17:04:03 2016 (r301456) @@ -117,7 +117,10 @@ struct td_sched { #define THREAD_CAN_SCHED(td, cpu) \ CPU_ISSET((cpu), &(td)->td_cpuset->cs_mask) -static struct td_sched td_sched0; +_Static_assert(sizeof(struct thread) + sizeof(struct td_sched) <= + sizeof(struct thread0_storage), + "increase struct thread0_storage.t0st_sched size"); + static struct mtx sched_lock; static int realstathz = 127; /* stathz is sometimes 0 and run off of hz. */ @@ -491,8 +494,8 @@ schedcpu(void) } FOREACH_THREAD_IN_PROC(p, td) { awake = 0; + ts = td_get_sched(td); thread_lock(td); - ts = td->td_sched; /* * Increment sleep time (if sleeping). We * ignore overflow, as above. @@ -596,7 +599,7 @@ updatepri(struct thread *td) fixpt_t loadfac; unsigned int newcpu; - ts = td->td_sched; + ts = td_get_sched(td); loadfac = loadfactor(averunnable.ldavg[0]); if (ts->ts_slptime > 5 * loadfac) ts->ts_estcpu = 0; @@ -621,7 +624,8 @@ resetpriority(struct thread *td) if (td->td_pri_class != PRI_TIMESHARE) return; - newpriority = PUSER + td->td_sched->ts_estcpu / INVERSE_ESTCPU_WEIGHT + + newpriority = PUSER + + td_get_sched(td)->ts_estcpu / INVERSE_ESTCPU_WEIGHT + NICE_WEIGHT * (td->td_proc->p_nice - PRIO_MIN); newpriority = min(max(newpriority, PRI_MIN_TIMESHARE), PRI_MAX_TIMESHARE); @@ -682,13 +686,12 @@ sched_initticks(void *dummy) void schedinit(void) { + /* - * Set up the scheduler specific parts of proc0. + * Set up the scheduler specific parts of thread0. */ - proc0.p_sched = NULL; /* XXX */ - thread0.td_sched = &td_sched0; thread0.td_lock = &sched_lock; - td_sched0.ts_slice = sched_slice; + td_get_sched(&thread0)->ts_slice = sched_slice; mtx_init(&sched_lock, "sched lock", NULL, MTX_SPIN | MTX_RECURSE); } @@ -731,7 +734,7 @@ sched_clock(struct thread *td) struct td_sched *ts; THREAD_LOCK_ASSERT(td, MA_OWNED); - ts = td->td_sched; + ts = td_get_sched(td); ts->ts_cpticks++; ts->ts_estcpu = ESTCPULIM(ts->ts_estcpu + 1); @@ -775,8 +778,8 @@ sched_exit_thread(struct thread *td, str KTR_STATE1(KTR_SCHED, "thread", sched_tdname(child), "exit", "prio:%d", child->td_priority); thread_lock(td); - td->td_sched->ts_estcpu = ESTCPULIM(td->td_sched->ts_estcpu + - child->td_sched->ts_estcpu); + td_get_sched(td)->ts_estcpu = ESTCPULIM(td_get_sched(td)->ts_estcpu + + td_get_sched(child)->ts_estcpu); thread_unlock(td); thread_lock(child); if ((child->td_flags & TDF_NOLOAD) == 0) @@ -793,17 +796,18 @@ sched_fork(struct thread *td, struct thr void sched_fork_thread(struct thread *td, struct thread *childtd) { - struct td_sched *ts; + struct td_sched *ts, *tsc; childtd->td_oncpu = NOCPU; childtd->td_lastcpu = NOCPU; childtd->td_lock = &sched_lock; childtd->td_cpuset = cpuset_ref(td->td_cpuset); childtd->td_priority = childtd->td_base_pri; - ts = childtd->td_sched; + ts = td_get_sched(childtd); bzero(ts, sizeof(*ts)); - ts->ts_estcpu = td->td_sched->ts_estcpu; - ts->ts_flags |= (td->td_sched->ts_flags & TSF_AFFINITY); + tsc = td_get_sched(td); + ts->ts_estcpu = tsc->ts_estcpu; + ts->ts_flags |= (tsc->ts_flags & TSF_AFFINITY); ts->ts_slice = 1; } @@ -952,7 +956,7 @@ sched_sleep(struct thread *td, int pri) THREAD_LOCK_ASSERT(td, MA_OWNED); td->td_slptick = ticks; - td->td_sched->ts_slptime = 0; + td_get_sched(td)->ts_slptime = 0; if (pri != 0 && PRI_BASE(td->td_pri_class) == PRI_TIMESHARE) sched_prio(td, pri); if (TD_IS_SUSPENDED(td) || pri >= PSOCK) @@ -968,7 +972,7 @@ sched_switch(struct thread *td, struct t int preempted; tmtx = NULL; - ts = td->td_sched; + ts = td_get_sched(td); p = td->td_proc; THREAD_LOCK_ASSERT(td, MA_OWNED); @@ -1095,7 +1099,7 @@ sched_wakeup(struct thread *td) struct td_sched *ts; THREAD_LOCK_ASSERT(td, MA_OWNED); - ts = td->td_sched; + ts = td_get_sched(td); td->td_flags &= ~TDF_CANSWAP; if (ts->ts_slptime > 1) { updatepri(td); @@ -1266,7 +1270,7 @@ sched_add(struct thread *td, int flags) int forwarded = 0; int single_cpu = 0; - ts = td->td_sched; + ts = td_get_sched(td); THREAD_LOCK_ASSERT(td, MA_OWNED); KASSERT((td->td_inhibitors == 0), ("sched_add: trying to run inhibited thread")); @@ -1361,7 +1365,7 @@ sched_add(struct thread *td, int flags) { struct td_sched *ts; - ts = td->td_sched; + ts = td_get_sched(td); THREAD_LOCK_ASSERT(td, MA_OWNED); KASSERT((td->td_inhibitors == 0), ("sched_add: trying to run inhibited thread")); @@ -1414,7 +1418,7 @@ sched_rem(struct thread *td) { struct td_sched *ts; - ts = td->td_sched; + ts = td_get_sched(td); KASSERT(td->td_flags & TDF_INMEM, ("sched_rem: thread swapped out")); KASSERT(TD_ON_RUNQ(td), @@ -1527,7 +1531,7 @@ sched_bind(struct thread *td, int cpu) THREAD_LOCK_ASSERT(td, MA_OWNED|MA_NOTRECURSED); KASSERT(td == curthread, ("sched_bind: can only bind curthread")); - ts = td->td_sched; + ts = td_get_sched(td); td->td_flags |= TDF_BOUND; #ifdef SMP @@ -1586,7 +1590,7 @@ sched_pctcpu(struct thread *td) struct td_sched *ts; THREAD_LOCK_ASSERT(td, MA_OWNED); - ts = td->td_sched; + ts = td_get_sched(td); return (ts->ts_pctcpu); } @@ -1603,7 +1607,7 @@ sched_pctcpu_delta(struct thread *td) int realstathz; THREAD_LOCK_ASSERT(td, MA_OWNED); - ts = td->td_sched; + ts = td_get_sched(td); delta = 0; realstathz = stathz ? stathz : hz; if (ts->ts_cpticks != 0) { @@ -1628,7 +1632,7 @@ u_int sched_estcpu(struct thread *td) { - return (td->td_sched->ts_estcpu); + return (td_get_sched(td)->ts_estcpu); } /* @@ -1707,7 +1711,7 @@ sched_tdname(struct thread *td) #ifdef KTR struct td_sched *ts; - ts = td->td_sched; + ts = td_get_sched(td); if (ts->ts_name[0] == '\0') snprintf(ts->ts_name, sizeof(ts->ts_name), "%s tid %d", td->td_name, td->td_tid); @@ -1723,7 +1727,7 @@ sched_clear_tdname(struct thread *td) { struct td_sched *ts; - ts = td->td_sched; + ts = td_get_sched(td); ts->ts_name[0] = '\0'; } #endif @@ -1741,7 +1745,7 @@ sched_affinity(struct thread *td) * Set the TSF_AFFINITY flag if there is at least one CPU this * thread can't run on. */ - ts = td->td_sched; + ts = td_get_sched(td); ts->ts_flags &= ~TSF_AFFINITY; CPU_FOREACH(cpu) { if (!THREAD_CAN_SCHED(td, cpu)) { Modified: head/sys/kern/sched_ule.c ============================================================================== --- head/sys/kern/sched_ule.c Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/kern/sched_ule.c Sun Jun 5 17:04:03 2016 (r301456) @@ -106,12 +106,14 @@ struct td_sched { #define TSF_BOUND 0x0001 /* Thread can not migrate. */ #define TSF_XFERABLE 0x0002 /* Thread was added as transferable. */ -static struct td_sched td_sched0; - #define THREAD_CAN_MIGRATE(td) ((td)->td_pinned == 0) #define THREAD_CAN_SCHED(td, cpu) \ CPU_ISSET((cpu), &(td)->td_cpuset->cs_mask) +_Static_assert(sizeof(struct thread) + sizeof(struct td_sched) <= + sizeof(struct thread0_storage), + "increase struct thread0_storage.t0st_sched size"); + /* * Priority ranges used for interactive and non-interactive timeshare * threads. The timeshare priorities are split up into four ranges. @@ -460,7 +462,7 @@ tdq_runq_add(struct tdq *tdq, struct thr THREAD_LOCK_ASSERT(td, MA_OWNED); pri = td->td_priority; - ts = td->td_sched; + ts = td_get_sched(td); TD_SET_RUNQ(td); if (THREAD_CAN_MIGRATE(td)) { tdq->tdq_transferable++; @@ -506,7 +508,7 @@ tdq_runq_rem(struct tdq *tdq, struct thr { struct td_sched *ts; - ts = td->td_sched; + ts = td_get_sched(td); TDQ_LOCK_ASSERT(tdq, MA_OWNED); KASSERT(ts->ts_runq != NULL, ("tdq_runq_remove: thread %p null ts_runq", td)); @@ -962,7 +964,7 @@ tdq_move(struct tdq *from, struct tdq *t td = tdq_steal(tdq, cpu); if (td == NULL) return (0); - ts = td->td_sched; + ts = td_get_sched(td); /* * Although the run queue is locked the thread may be blocked. Lock * it to clear this and acquire the run-queue lock. @@ -1046,7 +1048,7 @@ tdq_notify(struct tdq *tdq, struct threa if (tdq->tdq_ipipending) return; - cpu = td->td_sched->ts_cpu; + cpu = td_get_sched(td)->ts_cpu; pri = td->td_priority; ctd = pcpu_find(cpu)->pc_curthread; if (!sched_shouldpreempt(pri, ctd->td_priority, 1)) @@ -1174,7 +1176,7 @@ sched_setcpu(struct thread *td, int cpu, THREAD_LOCK_ASSERT(td, MA_OWNED); tdq = TDQ_CPU(cpu); - td->td_sched->ts_cpu = cpu; + td_get_sched(td)->ts_cpu = cpu; /* * If the lock matches just return the queue. */ @@ -1221,7 +1223,7 @@ sched_pickcpu(struct thread *td, int fla int cpu, pri, self; self = PCPU_GET(cpuid); - ts = td->td_sched; + ts = td_get_sched(td); if (smp_started == 0) return (self); /* @@ -1472,7 +1474,7 @@ sched_interact_score(struct thread *td) struct td_sched *ts; int div; - ts = td->td_sched; + ts = td_get_sched(td); /* * The score is only needed if this is likely to be an interactive * task. Don't go through the expense of computing it if there's @@ -1537,16 +1539,16 @@ sched_priority(struct thread *td) pri, score)); } else { pri = SCHED_PRI_MIN; - if (td->td_sched->ts_ticks) - pri += min(SCHED_PRI_TICKS(td->td_sched), + if (td_get_sched(td)->ts_ticks) + pri += min(SCHED_PRI_TICKS(td_get_sched(td)), SCHED_PRI_RANGE - 1); pri += SCHED_PRI_NICE(td->td_proc->p_nice); KASSERT(pri >= PRI_MIN_BATCH && pri <= PRI_MAX_BATCH, ("sched_priority: invalid priority %d: nice %d, " "ticks %d ftick %d ltick %d tick pri %d", - pri, td->td_proc->p_nice, td->td_sched->ts_ticks, - td->td_sched->ts_ftick, td->td_sched->ts_ltick, - SCHED_PRI_TICKS(td->td_sched))); + pri, td->td_proc->p_nice, td_get_sched(td)->ts_ticks, + td_get_sched(td)->ts_ftick, td_get_sched(td)->ts_ltick, + SCHED_PRI_TICKS(td_get_sched(td)))); } sched_user_prio(td, pri); @@ -1564,7 +1566,7 @@ sched_interact_update(struct thread *td) struct td_sched *ts; u_int sum; - ts = td->td_sched; + ts = td_get_sched(td); sum = ts->ts_runtime + ts->ts_slptime; if (sum < SCHED_SLP_RUN_MAX) return; @@ -1606,14 +1608,16 @@ sched_interact_update(struct thread *td) static void sched_interact_fork(struct thread *td) { + struct td_sched *ts; int ratio; int sum; - sum = td->td_sched->ts_runtime + td->td_sched->ts_slptime; + ts = td_get_sched(td); + sum = ts->ts_runtime + ts->ts_slptime; if (sum > SCHED_SLP_RUN_FORK) { ratio = sum / SCHED_SLP_RUN_FORK; - td->td_sched->ts_runtime /= ratio; - td->td_sched->ts_slptime /= ratio; + ts->ts_runtime /= ratio; + ts->ts_slptime /= ratio; } } @@ -1623,15 +1627,15 @@ sched_interact_fork(struct thread *td) void schedinit(void) { + struct td_sched *ts0; /* - * Set up the scheduler specific parts of proc0. + * Set up the scheduler specific parts of thread0. */ - proc0.p_sched = NULL; /* XXX */ - thread0.td_sched = &td_sched0; - td_sched0.ts_ltick = ticks; - td_sched0.ts_ftick = ticks; - td_sched0.ts_slice = 0; + ts0 = td_get_sched(&thread0); + ts0->ts_ltick = ticks; + ts0->ts_ftick = ticks; + ts0->ts_slice = 0; } /* @@ -1694,7 +1698,7 @@ sched_thread_priority(struct thread *td, SDT_PROBE4(sched, , , lend__pri, td, td->td_proc, prio, curthread); } - ts = td->td_sched; + ts = td_get_sched(td); THREAD_LOCK_ASSERT(td, MA_OWNED); if (td->td_priority == prio) return; @@ -1829,7 +1833,7 @@ sched_switch_migrate(struct tdq *tdq, st { struct tdq *tdn; - tdn = TDQ_CPU(td->td_sched->ts_cpu); + tdn = TDQ_CPU(td_get_sched(td)->ts_cpu); #ifdef SMP tdq_load_rem(tdq, td); /* @@ -1888,7 +1892,7 @@ sched_switch(struct thread *td, struct t cpuid = PCPU_GET(cpuid); tdq = TDQ_CPU(cpuid); - ts = td->td_sched; + ts = td_get_sched(td); mtx = td->td_lock; sched_pctcpu_update(ts, 1); ts->ts_rltick = ticks; @@ -1948,7 +1952,7 @@ sched_switch(struct thread *td, struct t SDT_PROBE2(sched, , , off__cpu, newtd, newtd->td_proc); lock_profile_release_lock(&TDQ_LOCKPTR(tdq)->lock_object); TDQ_LOCKPTR(tdq)->mtx_lock = (uintptr_t)newtd; - sched_pctcpu_update(newtd->td_sched, 0); + sched_pctcpu_update(td_get_sched(newtd), 0); #ifdef KDTRACE_HOOKS /* @@ -2038,7 +2042,7 @@ sched_wakeup(struct thread *td) int slptick; THREAD_LOCK_ASSERT(td, MA_OWNED); - ts = td->td_sched; + ts = td_get_sched(td); td->td_flags &= ~TDF_CANSWAP; /* * If we slept for more than a tick update our interactivity and @@ -2066,14 +2070,14 @@ void sched_fork(struct thread *td, struct thread *child) { THREAD_LOCK_ASSERT(td, MA_OWNED); - sched_pctcpu_update(td->td_sched, 1); + sched_pctcpu_update(td_get_sched(td), 1); sched_fork_thread(td, child); /* * Penalize the parent and child for forking. */ sched_interact_fork(child); sched_priority(child); - td->td_sched->ts_runtime += tickincr; + td_get_sched(td)->ts_runtime += tickincr; sched_interact_update(td); sched_priority(td); } @@ -2093,8 +2097,8 @@ sched_fork_thread(struct thread *td, str /* * Initialize child. */ - ts = td->td_sched; - ts2 = child->td_sched; + ts = td_get_sched(td); + ts2 = td_get_sched(child); child->td_oncpu = NOCPU; child->td_lastcpu = NOCPU; child->td_lock = TDQ_LOCKPTR(tdq); @@ -2169,7 +2173,7 @@ sched_exit_thread(struct thread *td, str * launch expensive things to mark their children as expensive. */ thread_lock(td); - td->td_sched->ts_runtime += child->td_sched->ts_runtime; + td_get_sched(td)->ts_runtime += td_get_sched(child)->ts_runtime; sched_interact_update(td); sched_priority(td); thread_unlock(td); @@ -2264,7 +2268,7 @@ sched_clock(struct thread *td) if (TAILQ_EMPTY(&tdq->tdq_timeshare.rq_queues[tdq->tdq_ridx])) tdq->tdq_ridx = tdq->tdq_idx; } - ts = td->td_sched; + ts = td_get_sched(td); sched_pctcpu_update(ts, 1); if (td->td_pri_class & PRI_FIFO_BIT) return; @@ -2273,7 +2277,7 @@ sched_clock(struct thread *td) * We used a tick; charge it to the thread so * that we can compute our interactivity. */ - td->td_sched->ts_runtime += tickincr; + td_get_sched(td)->ts_runtime += tickincr; sched_interact_update(td); sched_priority(td); } @@ -2455,7 +2459,7 @@ sched_rem(struct thread *td) KTR_STATE1(KTR_SCHED, "thread", sched_tdname(td), "runq rem", "prio:%d", td->td_priority); SDT_PROBE3(sched, , , dequeue, td, td->td_proc, NULL); - tdq = TDQ_CPU(td->td_sched->ts_cpu); + tdq = TDQ_CPU(td_get_sched(td)->ts_cpu); TDQ_LOCK_ASSERT(tdq, MA_OWNED); MPASS(td->td_lock == TDQ_LOCKPTR(tdq)); KASSERT(TD_ON_RUNQ(td), @@ -2477,9 +2481,7 @@ sched_pctcpu(struct thread *td) struct td_sched *ts; pctcpu = 0; - ts = td->td_sched; - if (ts == NULL) - return (0); + ts = td_get_sched(td); THREAD_LOCK_ASSERT(td, MA_OWNED); sched_pctcpu_update(ts, TD_IS_RUNNING(td)); @@ -2505,7 +2507,7 @@ sched_affinity(struct thread *td) struct td_sched *ts; THREAD_LOCK_ASSERT(td, MA_OWNED); - ts = td->td_sched; + ts = td_get_sched(td); if (THREAD_CAN_SCHED(td, ts->ts_cpu)) return; if (TD_ON_RUNQ(td)) { @@ -2536,7 +2538,7 @@ sched_bind(struct thread *td, int cpu) THREAD_LOCK_ASSERT(td, MA_OWNED|MA_NOTRECURSED); KASSERT(td == curthread, ("sched_bind: can only bind curthread")); - ts = td->td_sched; + ts = td_get_sched(td); if (ts->ts_flags & TSF_BOUND) sched_unbind(td); KASSERT(THREAD_CAN_MIGRATE(td), ("%p must be migratable", td)); @@ -2559,7 +2561,7 @@ sched_unbind(struct thread *td) THREAD_LOCK_ASSERT(td, MA_OWNED); KASSERT(td == curthread, ("sched_unbind: can only bind curthread")); - ts = td->td_sched; + ts = td_get_sched(td); if ((ts->ts_flags & TSF_BOUND) == 0) return; ts->ts_flags &= ~TSF_BOUND; @@ -2570,7 +2572,7 @@ int sched_is_bound(struct thread *td) { THREAD_LOCK_ASSERT(td, MA_OWNED); - return (td->td_sched->ts_flags & TSF_BOUND); + return (td_get_sched(td)->ts_flags & TSF_BOUND); } /* @@ -2761,7 +2763,7 @@ sched_tdname(struct thread *td) #ifdef KTR struct td_sched *ts; - ts = td->td_sched; + ts = td_get_sched(td); if (ts->ts_name[0] == '\0') snprintf(ts->ts_name, sizeof(ts->ts_name), "%s tid %d", td->td_name, td->td_tid); @@ -2777,7 +2779,7 @@ sched_clear_tdname(struct thread *td) { struct td_sched *ts; - ts = td->td_sched; + ts = td_get_sched(td); ts->ts_name[0] = '\0'; } #endif Modified: head/sys/mips/mips/locore.S ============================================================================== --- head/sys/mips/mips/locore.S Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/mips/mips/locore.S Sun Jun 5 17:04:03 2016 (r301456) @@ -173,7 +173,7 @@ VECTOR(_locore, unknown) jal _C_LABEL(platform_start) nop - PTR_LA sp, _C_LABEL(thread0) + PTR_LA sp, _C_LABEL(thread0_st) PTR_L a0, TD_PCB(sp) REG_LI t0, ~7 and a0, a0, t0 Modified: head/sys/sys/proc.h ============================================================================== --- head/sys/sys/proc.h Sun Jun 5 16:55:55 2016 (r301455) +++ head/sys/sys/proc.h Sun Jun 5 17:04:03 2016 (r301456) @@ -325,7 +325,6 @@ struct thread { int td_kstack_pages; /* (a) Size of the kstack. */ volatile u_int td_critnest; /* (k*) Critical section nest level. */ struct mdthread td_md; /* (k) Any machine-dependent fields. */ - struct td_sched *td_sched; /* (*) Scheduler-specific data. */ struct kaudit_record *td_ar; /* (k) Active audit record, if any. */ struct lpohead td_lprof[2]; /* (a) lock profiling objects. */ struct kdtrace_thread *td_dtrace; /* (*) DTrace-specific data. */ @@ -341,6 +340,11 @@ struct thread { int td_oncpu; /* (t) Which cpu we are on. */ }; +struct thread0_storage { + struct thread t0st_thread; + uint64_t t0st_sched[10]; +}; + struct mtx *thread_lock_block(struct thread *); void thread_lock_unblock(struct thread *, struct mtx *); void thread_lock_set(struct thread *, struct mtx *); @@ -616,7 +620,6 @@ struct proc { struct proc *p_leader; /* (b) */ void *p_emuldata; /* (c) Emulator state data. */ struct label *p_label; /* (*) Proc (not subject) MAC label. */ - struct p_sched *p_sched; /* (*) Scheduler-specific data. */ STAILQ_HEAD(, ktr_request) p_ktr; /* (o) KTR event queue. */ LIST_HEAD(, mqueue_notifier) p_mqnotifier; /* (c) mqueue notifiers.*/ struct kdtrace_proc *p_dtrace; /* (*) DTrace-specific data. */ @@ -890,7 +893,8 @@ extern int allproc_gen; extern struct sx proctree_lock; extern struct mtx ppeers_lock; extern struct proc proc0; /* Process slot for swapper. */ -extern struct thread thread0; /* Primary thread in proc0. */ +extern struct thread0_storage thread0_st; /* Primary thread in proc0. */ +#define thread0 (thread0_st.t0st_thread) extern struct vmspace vmspace0; /* VM space for proc0. */ extern int hogticks; /* Limit on kernel cpu hogs. */ extern int lastpid; @@ -1065,6 +1069,13 @@ curthread_pflags_restore(int save) curthread->td_pflags &= save; } +static __inline __pure2 struct td_sched * +td_get_sched(struct thread *td) +{ + + return ((struct td_sched *)&td[1]); +} + #endif /* _KERNEL */ #endif /* !_SYS_PROC_H_ */ _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
