diff options
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/capabilities.conf | 2 | ||||
| -rw-r--r-- | sys/kern/kern_fork.c | 3 | ||||
| -rw-r--r-- | sys/kern/kern_sig.c | 2 | ||||
| -rw-r--r-- | sys/kern/subr_gtaskqueue.c | 864 | ||||
| -rw-r--r-- | sys/kern/subr_param.c | 1 | ||||
| -rw-r--r-- | sys/kern/subr_syscall.c | 8 | ||||
| -rw-r--r-- | sys/kern/subr_taskqueue.c | 360 | ||||
| -rw-r--r-- | sys/kern/sys_process.c | 17 | ||||
| -rw-r--r-- | sys/kern/vfs_aio.c | 7 | ||||
| -rw-r--r-- | sys/kern/vfs_default.c | 1 |
10 files changed, 888 insertions, 377 deletions
diff --git a/sys/kern/capabilities.conf b/sys/kern/capabilities.conf index d0ea97c..24bac6b 100644 --- a/sys/kern/capabilities.conf +++ b/sys/kern/capabilities.conf @@ -64,9 +64,7 @@ __sysctl ## ## XXRW: Need to check this very carefully. ## -_umtx_lock _umtx_op -_umtx_unlock ## ## Allow process termination using abort2(2). diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index c7447fb..b9e41af 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -736,6 +736,7 @@ do_fork(struct thread *td, struct fork_req *fr, struct proc *p2, struct thread * if (fr->fr_flags & RFPPWAIT) { td->td_pflags |= TDP_RFPPWAIT; td->td_rfppwait_p = p2; + td->td_dbgflags |= TDB_VFORK; } PROC_UNLOCK(p2); @@ -1074,7 +1075,7 @@ fork_return(struct thread *td, struct trapframe *frame) * parent's children, do it now. */ dbg = p->p_pptr->p_pptr; - proc_set_traced(p); + proc_set_traced(p, true); CTR2(KTR_PTRACE, "fork_return: attaching to new child pid %d: oppid %d", p->p_pid, p->p_oppid); diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 7af14a0..5a1b05e 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -2537,7 +2537,7 @@ ptracestop(struct thread *td, int sig) * a chance to report itself upon the next iteration. */ if ((td->td_dbgflags & TDB_FSTP) != 0 || - ((p->p_flag & P2_PTRACE_FSTP) == 0 && + ((p->p_flag2 & P2_PTRACE_FSTP) == 0 && p->p_xthread == NULL)) { p->p_xsig = sig; p->p_xthread = td; diff --git a/sys/kern/subr_gtaskqueue.c b/sys/kern/subr_gtaskqueue.c new file mode 100644 index 0000000..2d655bd --- /dev/null +++ b/sys/kern/subr_gtaskqueue.c @@ -0,0 +1,864 @@ +/*- + * Copyright (c) 2000 Doug Rabson + * Copyright (c) 2014 Jeff Roberson + * Copyright (c) 2016 Matthew Macy + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/cpuset.h> +#include <sys/interrupt.h> +#include <sys/kernel.h> +#include <sys/kthread.h> +#include <sys/libkern.h> +#include <sys/limits.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/mutex.h> +#include <sys/proc.h> +#include <sys/sched.h> +#include <sys/smp.h> +#include <sys/gtaskqueue.h> +#include <sys/unistd.h> +#include <machine/stdarg.h> + +static MALLOC_DEFINE(M_GTASKQUEUE, "taskqueue", "Task Queues"); +static void gtaskqueue_thread_enqueue(void *); +static void gtaskqueue_thread_loop(void *arg); + + +struct gtaskqueue_busy { + struct gtask *tb_running; + TAILQ_ENTRY(gtaskqueue_busy) tb_link; +}; + +static struct gtask * const TB_DRAIN_WAITER = (struct gtask *)0x1; + +struct gtaskqueue { + STAILQ_HEAD(, gtask) tq_queue; + gtaskqueue_enqueue_fn tq_enqueue; + void *tq_context; + char *tq_name; + TAILQ_HEAD(, gtaskqueue_busy) tq_active; + struct mtx tq_mutex; + struct thread **tq_threads; + int tq_tcount; + int tq_spin; + int tq_flags; + int tq_callouts; + taskqueue_callback_fn tq_callbacks[TASKQUEUE_NUM_CALLBACKS]; + void *tq_cb_contexts[TASKQUEUE_NUM_CALLBACKS]; +}; + +#define TQ_FLAGS_ACTIVE (1 << 0) +#define TQ_FLAGS_BLOCKED (1 << 1) +#define TQ_FLAGS_UNLOCKED_ENQUEUE (1 << 2) + +#define DT_CALLOUT_ARMED (1 << 0) + +#define TQ_LOCK(tq) \ + do { \ + if ((tq)->tq_spin) \ + mtx_lock_spin(&(tq)->tq_mutex); \ + else \ + mtx_lock(&(tq)->tq_mutex); \ + } while (0) +#define TQ_ASSERT_LOCKED(tq) mtx_assert(&(tq)->tq_mutex, MA_OWNED) + +#define TQ_UNLOCK(tq) \ + do { \ + if ((tq)->tq_spin) \ + mtx_unlock_spin(&(tq)->tq_mutex); \ + else \ + mtx_unlock(&(tq)->tq_mutex); \ + } while (0) +#define TQ_ASSERT_UNLOCKED(tq) mtx_assert(&(tq)->tq_mutex, MA_NOTOWNED) + +static __inline int +TQ_SLEEP(struct gtaskqueue *tq, void *p, struct mtx *m, int pri, const char *wm, + int t) +{ + if (tq->tq_spin) + return (msleep_spin(p, m, wm, t)); + return (msleep(p, m, pri, wm, t)); +} + +static struct gtaskqueue * +_gtaskqueue_create(const char *name, int mflags, + taskqueue_enqueue_fn enqueue, void *context, + int mtxflags, const char *mtxname __unused) +{ + struct gtaskqueue *queue; + char *tq_name; + + tq_name = malloc(TASKQUEUE_NAMELEN, M_GTASKQUEUE, mflags | M_ZERO); + if (!tq_name) + return (NULL); + + snprintf(tq_name, TASKQUEUE_NAMELEN, "%s", (name) ? name : "taskqueue"); + + queue = malloc(sizeof(struct gtaskqueue), M_GTASKQUEUE, mflags | M_ZERO); + if (!queue) + return (NULL); + + STAILQ_INIT(&queue->tq_queue); + TAILQ_INIT(&queue->tq_active); + queue->tq_enqueue = enqueue; + queue->tq_context = context; + queue->tq_name = tq_name; + queue->tq_spin = (mtxflags & MTX_SPIN) != 0; + queue->tq_flags |= TQ_FLAGS_ACTIVE; + if (enqueue == gtaskqueue_thread_enqueue) + queue->tq_flags |= TQ_FLAGS_UNLOCKED_ENQUEUE; + mtx_init(&queue->tq_mutex, tq_name, NULL, mtxflags); + + return (queue); +} + + +/* + * Signal a taskqueue thread to terminate. + */ +static void +gtaskqueue_terminate(struct thread **pp, struct gtaskqueue *tq) +{ + + while (tq->tq_tcount > 0 || tq->tq_callouts > 0) { + wakeup(tq); + TQ_SLEEP(tq, pp, &tq->tq_mutex, PWAIT, "taskqueue_destroy", 0); + } +} + +static void +gtaskqueue_free(struct gtaskqueue *queue) +{ + + TQ_LOCK(queue); + queue->tq_flags &= ~TQ_FLAGS_ACTIVE; + gtaskqueue_terminate(queue->tq_threads, queue); + KASSERT(TAILQ_EMPTY(&queue->tq_active), ("Tasks still running?")); + KASSERT(queue->tq_callouts == 0, ("Armed timeout tasks")); + mtx_destroy(&queue->tq_mutex); + free(queue->tq_threads, M_GTASKQUEUE); + free(queue->tq_name, M_GTASKQUEUE); + free(queue, M_GTASKQUEUE); +} + +int +grouptaskqueue_enqueue(struct gtaskqueue *queue, struct gtask *gtask) +{ + TQ_LOCK(queue); + if (gtask->ta_flags & TASK_ENQUEUED) { + TQ_UNLOCK(queue); + return (0); + } + STAILQ_INSERT_TAIL(&queue->tq_queue, gtask, ta_link); + gtask->ta_flags |= TASK_ENQUEUED; + TQ_UNLOCK(queue); + if ((queue->tq_flags & TQ_FLAGS_BLOCKED) == 0) + queue->tq_enqueue(queue->tq_context); + return (0); +} + +static void +gtaskqueue_task_nop_fn(void *context) +{ +} + +/* + * Block until all currently queued tasks in this taskqueue + * have begun execution. Tasks queued during execution of + * this function are ignored. + */ +static void +gtaskqueue_drain_tq_queue(struct gtaskqueue *queue) +{ + struct gtask t_barrier; + + if (STAILQ_EMPTY(&queue->tq_queue)) + return; + + /* + * Enqueue our barrier after all current tasks, but with + * the highest priority so that newly queued tasks cannot + * pass it. Because of the high priority, we can not use + * taskqueue_enqueue_locked directly (which drops the lock + * anyway) so just insert it at tail while we have the + * queue lock. + */ + GTASK_INIT(&t_barrier, 0, USHRT_MAX, gtaskqueue_task_nop_fn, &t_barrier); + STAILQ_INSERT_TAIL(&queue->tq_queue, &t_barrier, ta_link); + t_barrier.ta_flags |= TASK_ENQUEUED; + + /* + * Once the barrier has executed, all previously queued tasks + * have completed or are currently executing. + */ + while (t_barrier.ta_flags & TASK_ENQUEUED) + TQ_SLEEP(queue, &t_barrier, &queue->tq_mutex, PWAIT, "-", 0); +} + +/* + * Block until all currently executing tasks for this taskqueue + * complete. Tasks that begin execution during the execution + * of this function are ignored. + */ +static void +gtaskqueue_drain_tq_active(struct gtaskqueue *queue) +{ + struct gtaskqueue_busy tb_marker, *tb_first; + + if (TAILQ_EMPTY(&queue->tq_active)) + return; + + /* Block taskq_terminate().*/ + queue->tq_callouts++; + + /* + * Wait for all currently executing taskqueue threads + * to go idle. + */ + tb_marker.tb_running = TB_DRAIN_WAITER; + TAILQ_INSERT_TAIL(&queue->tq_active, &tb_marker, tb_link); + while (TAILQ_FIRST(&queue->tq_active) != &tb_marker) + TQ_SLEEP(queue, &tb_marker, &queue->tq_mutex, PWAIT, "-", 0); + TAILQ_REMOVE(&queue->tq_active, &tb_marker, tb_link); + + /* + * Wakeup any other drain waiter that happened to queue up + * without any intervening active thread. + */ + tb_first = TAILQ_FIRST(&queue->tq_active); + if (tb_first != NULL && tb_first->tb_running == TB_DRAIN_WAITER) + wakeup(tb_first); + + /* Release taskqueue_terminate(). */ + queue->tq_callouts--; + if ((queue->tq_flags & TQ_FLAGS_ACTIVE) == 0) + wakeup_one(queue->tq_threads); +} + +void +gtaskqueue_block(struct gtaskqueue *queue) +{ + + TQ_LOCK(queue); + queue->tq_flags |= TQ_FLAGS_BLOCKED; + TQ_UNLOCK(queue); +} + +void +gtaskqueue_unblock(struct gtaskqueue *queue) +{ + + TQ_LOCK(queue); + queue->tq_flags &= ~TQ_FLAGS_BLOCKED; + if (!STAILQ_EMPTY(&queue->tq_queue)) + queue->tq_enqueue(queue->tq_context); + TQ_UNLOCK(queue); +} + +static void +gtaskqueue_run_locked(struct gtaskqueue *queue) +{ + struct gtaskqueue_busy tb; + struct gtaskqueue_busy *tb_first; + struct gtask *gtask; + + KASSERT(queue != NULL, ("tq is NULL")); + TQ_ASSERT_LOCKED(queue); + tb.tb_running = NULL; + + while (STAILQ_FIRST(&queue->tq_queue)) { + TAILQ_INSERT_TAIL(&queue->tq_active, &tb, tb_link); + + /* + * Carefully remove the first task from the queue and + * clear its TASK_ENQUEUED flag + */ + gtask = STAILQ_FIRST(&queue->tq_queue); + KASSERT(gtask != NULL, ("task is NULL")); + STAILQ_REMOVE_HEAD(&queue->tq_queue, ta_link); + gtask->ta_flags &= ~TASK_ENQUEUED; + tb.tb_running = gtask; + TQ_UNLOCK(queue); + + KASSERT(gtask->ta_func != NULL, ("task->ta_func is NULL")); + gtask->ta_func(gtask->ta_context); + + TQ_LOCK(queue); + tb.tb_running = NULL; + wakeup(gtask); + + TAILQ_REMOVE(&queue->tq_active, &tb, tb_link); + tb_first = TAILQ_FIRST(&queue->tq_active); + if (tb_first != NULL && + tb_first->tb_running == TB_DRAIN_WAITER) + wakeup(tb_first); + } +} + +static int +task_is_running(struct gtaskqueue *queue, struct gtask *gtask) +{ + struct gtaskqueue_busy *tb; + + TQ_ASSERT_LOCKED(queue); + TAILQ_FOREACH(tb, &queue->tq_active, tb_link) { + if (tb->tb_running == gtask) + return (1); + } + return (0); +} + +static int +gtaskqueue_cancel_locked(struct gtaskqueue *queue, struct gtask *gtask) +{ + + if (gtask->ta_flags & TASK_ENQUEUED) + STAILQ_REMOVE(&queue->tq_queue, gtask, gtask, ta_link); + gtask->ta_flags &= ~TASK_ENQUEUED; + return (task_is_running(queue, gtask) ? EBUSY : 0); +} + +int +gtaskqueue_cancel(struct gtaskqueue *queue, struct gtask *gtask) +{ + int error; + + TQ_LOCK(queue); + error = gtaskqueue_cancel_locked(queue, gtask); + TQ_UNLOCK(queue); + + return (error); +} + +void +gtaskqueue_drain(struct gtaskqueue *queue, struct gtask *gtask) +{ + + if (!queue->tq_spin) + WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL, __func__); + + TQ_LOCK(queue); + while ((gtask->ta_flags & TASK_ENQUEUED) || task_is_running(queue, gtask)) + TQ_SLEEP(queue, gtask, &queue->tq_mutex, PWAIT, "-", 0); + TQ_UNLOCK(queue); +} + +void +gtaskqueue_drain_all(struct gtaskqueue *queue) +{ + + if (!queue->tq_spin) + WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL, __func__); + + TQ_LOCK(queue); + gtaskqueue_drain_tq_queue(queue); + gtaskqueue_drain_tq_active(queue); + TQ_UNLOCK(queue); +} + +static int +_gtaskqueue_start_threads(struct gtaskqueue **tqp, int count, int pri, + cpuset_t *mask, const char *name, va_list ap) +{ + char ktname[MAXCOMLEN + 1]; + struct thread *td; + struct gtaskqueue *tq; + int i, error; + + if (count <= 0) + return (EINVAL); + + vsnprintf(ktname, sizeof(ktname), name, ap); + tq = *tqp; + + tq->tq_threads = malloc(sizeof(struct thread *) * count, M_GTASKQUEUE, + M_NOWAIT | M_ZERO); + if (tq->tq_threads == NULL) { + printf("%s: no memory for %s threads\n", __func__, ktname); + return (ENOMEM); + } + + for (i = 0; i < count; i++) { + if (count == 1) + error = kthread_add(gtaskqueue_thread_loop, tqp, NULL, + &tq->tq_threads[i], RFSTOPPED, 0, "%s", ktname); + else + error = kthread_add(gtaskqueue_thread_loop, tqp, NULL, + &tq->tq_threads[i], RFSTOPPED, 0, + "%s_%d", ktname, i); + if (error) { + /* should be ok to continue, taskqueue_free will dtrt */ + printf("%s: kthread_add(%s): error %d", __func__, + ktname, error); + tq->tq_threads[i] = NULL; /* paranoid */ + } else + tq->tq_tcount++; + } + for (i = 0; i < count; i++) { + if (tq->tq_threads[i] == NULL) + continue; + td = tq->tq_threads[i]; + if (mask) { + error = cpuset_setthread(td->td_tid, mask); + /* + * Failing to pin is rarely an actual fatal error; + * it'll just affect performance. + */ + if (error) + printf("%s: curthread=%llu: can't pin; " + "error=%d\n", + __func__, + (unsigned long long) td->td_tid, + error); + } + thread_lock(td); + sched_prio(td, pri); + sched_add(td, SRQ_BORING); + thread_unlock(td); + } + + return (0); +} + +static int +gtaskqueue_start_threads(struct gtaskqueue **tqp, int count, int pri, + const char *name, ...) +{ + va_list ap; + int error; + + va_start(ap, name); + error = _gtaskqueue_start_threads(tqp, count, pri, NULL, name, ap); + va_end(ap); + return (error); +} + +static inline void +gtaskqueue_run_callback(struct gtaskqueue *tq, + enum taskqueue_callback_type cb_type) +{ + taskqueue_callback_fn tq_callback; + + TQ_ASSERT_UNLOCKED(tq); + tq_callback = tq->tq_callbacks[cb_type]; + if (tq_callback != NULL) + tq_callback(tq->tq_cb_contexts[cb_type]); +} + +static void +gtaskqueue_thread_loop(void *arg) +{ + struct gtaskqueue **tqp, *tq; + + tqp = arg; + tq = *tqp; + gtaskqueue_run_callback(tq, TASKQUEUE_CALLBACK_TYPE_INIT); + TQ_LOCK(tq); + while ((tq->tq_flags & TQ_FLAGS_ACTIVE) != 0) { + /* XXX ? */ + gtaskqueue_run_locked(tq); + /* + * Because taskqueue_run() can drop tq_mutex, we need to + * check if the TQ_FLAGS_ACTIVE flag wasn't removed in the + * meantime, which means we missed a wakeup. + */ + if ((tq->tq_flags & TQ_FLAGS_ACTIVE) == 0) + break; + TQ_SLEEP(tq, tq, &tq->tq_mutex, 0, "-", 0); + } + gtaskqueue_run_locked(tq); + /* + * This thread is on its way out, so just drop the lock temporarily + * in order to call the shutdown callback. This allows the callback + * to look at the taskqueue, even just before it dies. + */ + TQ_UNLOCK(tq); + gtaskqueue_run_callback(tq, TASKQUEUE_CALLBACK_TYPE_SHUTDOWN); + TQ_LOCK(tq); + + /* rendezvous with thread that asked us to terminate */ + tq->tq_tcount--; + wakeup_one(tq->tq_threads); + TQ_UNLOCK(tq); + kthread_exit(); +} + +static void +gtaskqueue_thread_enqueue(void *context) +{ + struct gtaskqueue **tqp, *tq; + + tqp = context; + tq = *tqp; + wakeup_one(tq); +} + + +static struct gtaskqueue * +gtaskqueue_create_fast(const char *name, int mflags, + taskqueue_enqueue_fn enqueue, void *context) +{ + return _gtaskqueue_create(name, mflags, enqueue, context, + MTX_SPIN, "fast_taskqueue"); +} + + +struct taskqgroup_cpu { + LIST_HEAD(, grouptask) tgc_tasks; + struct gtaskqueue *tgc_taskq; + int tgc_cnt; + int tgc_cpu; +}; + +struct taskqgroup { + struct taskqgroup_cpu tqg_queue[MAXCPU]; + struct mtx tqg_lock; + char * tqg_name; + int tqg_adjusting; + int tqg_stride; + int tqg_cnt; +}; + +struct taskq_bind_task { + struct gtask bt_task; + int bt_cpuid; +}; + +static void +taskqgroup_cpu_create(struct taskqgroup *qgroup, int idx) +{ + struct taskqgroup_cpu *qcpu; + + qcpu = &qgroup->tqg_queue[idx]; + LIST_INIT(&qcpu->tgc_tasks); + qcpu->tgc_taskq = gtaskqueue_create_fast(NULL, M_WAITOK, + taskqueue_thread_enqueue, &qcpu->tgc_taskq); + gtaskqueue_start_threads(&qcpu->tgc_taskq, 1, PI_SOFT, + "%s_%d", qgroup->tqg_name, idx); + qcpu->tgc_cpu = idx * qgroup->tqg_stride; +} + +static void +taskqgroup_cpu_remove(struct taskqgroup *qgroup, int idx) +{ + + gtaskqueue_free(qgroup->tqg_queue[idx].tgc_taskq); +} + +/* + * Find the taskq with least # of tasks that doesn't currently have any + * other queues from the uniq identifier. + */ +static int +taskqgroup_find(struct taskqgroup *qgroup, void *uniq) +{ + struct grouptask *n; + int i, idx, mincnt; + int strict; + + mtx_assert(&qgroup->tqg_lock, MA_OWNED); + if (qgroup->tqg_cnt == 0) + return (0); + idx = -1; + mincnt = INT_MAX; + /* + * Two passes; First scan for a queue with the least tasks that + * does not already service this uniq id. If that fails simply find + * the queue with the least total tasks; + */ + for (strict = 1; mincnt == INT_MAX; strict = 0) { + for (i = 0; i < qgroup->tqg_cnt; i++) { + if (qgroup->tqg_queue[i].tgc_cnt > mincnt) + continue; + if (strict) { + LIST_FOREACH(n, + &qgroup->tqg_queue[i].tgc_tasks, gt_list) + if (n->gt_uniq == uniq) + break; + if (n != NULL) + continue; + } + mincnt = qgroup->tqg_queue[i].tgc_cnt; + idx = i; + } + } + if (idx == -1) + panic("taskqgroup_find: Failed to pick a qid."); + + return (idx); +} + +void +taskqgroup_attach(struct taskqgroup *qgroup, struct grouptask *gtask, + void *uniq, int irq, char *name) +{ + cpuset_t mask; + int qid; + + gtask->gt_uniq = uniq; + gtask->gt_name = name; + gtask->gt_irq = irq; + gtask->gt_cpu = -1; + mtx_lock(&qgroup->tqg_lock); + qid = taskqgroup_find(qgroup, uniq); + qgroup->tqg_queue[qid].tgc_cnt++; + LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list); + gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq; + if (irq != -1 && smp_started) { + CPU_ZERO(&mask); + CPU_SET(qgroup->tqg_queue[qid].tgc_cpu, &mask); + mtx_unlock(&qgroup->tqg_lock); + intr_setaffinity(irq, &mask); + } else + mtx_unlock(&qgroup->tqg_lock); +} + +int +taskqgroup_attach_cpu(struct taskqgroup *qgroup, struct grouptask *gtask, + void *uniq, int cpu, int irq, char *name) +{ + cpuset_t mask; + int i, qid; + + qid = -1; + gtask->gt_uniq = uniq; + gtask->gt_name = name; + gtask->gt_irq = irq; + gtask->gt_cpu = cpu; + mtx_lock(&qgroup->tqg_lock); + if (smp_started) { + for (i = 0; i < qgroup->tqg_cnt; i++) + if (qgroup->tqg_queue[i].tgc_cpu == cpu) { + qid = i; + break; + } + if (qid == -1) { + mtx_unlock(&qgroup->tqg_lock); + return (EINVAL); + } + } else + qid = 0; + qgroup->tqg_queue[qid].tgc_cnt++; + LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list); + gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq; + if (irq != -1 && smp_started) { + CPU_ZERO(&mask); + CPU_SET(qgroup->tqg_queue[qid].tgc_cpu, &mask); + mtx_unlock(&qgroup->tqg_lock); + intr_setaffinity(irq, &mask); + } else + mtx_unlock(&qgroup->tqg_lock); + return (0); +} + +void +taskqgroup_detach(struct taskqgroup *qgroup, struct grouptask *gtask) +{ + int i; + + mtx_lock(&qgroup->tqg_lock); + for (i = 0; i < qgroup->tqg_cnt; i++) + if (qgroup->tqg_queue[i].tgc_taskq == gtask->gt_taskqueue) + break; + if (i == qgroup->tqg_cnt) + panic("taskqgroup_detach: task not in group\n"); + qgroup->tqg_queue[i].tgc_cnt--; + LIST_REMOVE(gtask, gt_list); + mtx_unlock(&qgroup->tqg_lock); + gtask->gt_taskqueue = NULL; +} + +static void +taskqgroup_binder(void *ctx) +{ + struct taskq_bind_task *gtask = (struct taskq_bind_task *)ctx; + cpuset_t mask; + int error; + + CPU_ZERO(&mask); + CPU_SET(gtask->bt_cpuid, &mask); + error = cpuset_setthread(curthread->td_tid, &mask); + thread_lock(curthread); + sched_bind(curthread, gtask->bt_cpuid); + thread_unlock(curthread); + + if (error) + printf("taskqgroup_binder: setaffinity failed: %d\n", + error); + free(gtask, M_DEVBUF); +} + +static void +taskqgroup_bind(struct taskqgroup *qgroup) +{ + struct taskq_bind_task *gtask; + int i; + + /* + * Bind taskqueue threads to specific CPUs, if they have been assigned + * one. + */ + for (i = 0; i < qgroup->tqg_cnt; i++) { + gtask = malloc(sizeof (*gtask), M_DEVBUF, M_NOWAIT); + GTASK_INIT(>ask->bt_task, 0, 0, taskqgroup_binder, gtask); + gtask->bt_cpuid = qgroup->tqg_queue[i].tgc_cpu; + grouptaskqueue_enqueue(qgroup->tqg_queue[i].tgc_taskq, + >ask->bt_task); + } +} + +static int +_taskqgroup_adjust(struct taskqgroup *qgroup, int cnt, int stride) +{ + LIST_HEAD(, grouptask) gtask_head = LIST_HEAD_INITIALIZER(NULL); + cpuset_t mask; + struct grouptask *gtask; + int i, old_cnt, qid; + + mtx_assert(&qgroup->tqg_lock, MA_OWNED); + + if (cnt < 1 || cnt * stride > mp_ncpus || !smp_started) { + printf("taskqgroup_adjust failed cnt: %d stride: %d mp_ncpus: %d smp_started: %d\n", + cnt, stride, mp_ncpus, smp_started); + return (EINVAL); + } + if (qgroup->tqg_adjusting) { + printf("taskqgroup_adjust failed: adjusting\n"); + return (EBUSY); + } + qgroup->tqg_adjusting = 1; + old_cnt = qgroup->tqg_cnt; + mtx_unlock(&qgroup->tqg_lock); + /* + * Set up queue for tasks added before boot. + */ + if (old_cnt == 0) { + LIST_SWAP(>ask_head, &qgroup->tqg_queue[0].tgc_tasks, + grouptask, gt_list); + qgroup->tqg_queue[0].tgc_cnt = 0; + } + + /* + * If new taskq threads have been added. + */ + for (i = old_cnt; i < cnt; i++) + taskqgroup_cpu_create(qgroup, i); + mtx_lock(&qgroup->tqg_lock); + qgroup->tqg_cnt = cnt; + qgroup->tqg_stride = stride; + + /* + * Adjust drivers to use new taskqs. + */ + for (i = 0; i < old_cnt; i++) { + while ((gtask = LIST_FIRST(&qgroup->tqg_queue[i].tgc_tasks))) { + LIST_REMOVE(gtask, gt_list); + qgroup->tqg_queue[i].tgc_cnt--; + LIST_INSERT_HEAD(>ask_head, gtask, gt_list); + } + } + + while ((gtask = LIST_FIRST(>ask_head))) { + LIST_REMOVE(gtask, gt_list); + if (gtask->gt_cpu == -1) + qid = taskqgroup_find(qgroup, gtask->gt_uniq); + else { + for (i = 0; i < qgroup->tqg_cnt; i++) + if (qgroup->tqg_queue[i].tgc_cpu == gtask->gt_cpu) { + qid = i; + break; + } + } + qgroup->tqg_queue[qid].tgc_cnt++; + LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, + gt_list); + gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq; + } + /* + * Set new CPU and IRQ affinity + */ + for (i = 0; i < cnt; i++) { + qgroup->tqg_queue[i].tgc_cpu = i * qgroup->tqg_stride; + CPU_ZERO(&mask); + CPU_SET(qgroup->tqg_queue[i].tgc_cpu, &mask); + LIST_FOREACH(gtask, &qgroup->tqg_queue[i].tgc_tasks, gt_list) { + if (gtask->gt_irq == -1) + continue; + intr_setaffinity(gtask->gt_irq, &mask); + } + } + mtx_unlock(&qgroup->tqg_lock); + + /* + * If taskq thread count has been reduced. + */ + for (i = cnt; i < old_cnt; i++) + taskqgroup_cpu_remove(qgroup, i); + + mtx_lock(&qgroup->tqg_lock); + qgroup->tqg_adjusting = 0; + + taskqgroup_bind(qgroup); + + return (0); +} + +int +taskqgroup_adjust(struct taskqgroup *qgroup, int cpu, int stride) +{ + int error; + + mtx_lock(&qgroup->tqg_lock); + error = _taskqgroup_adjust(qgroup, cpu, stride); + mtx_unlock(&qgroup->tqg_lock); + + return (error); +} + +struct taskqgroup * +taskqgroup_create(char *name) +{ + struct taskqgroup *qgroup; + + qgroup = malloc(sizeof(*qgroup), M_GTASKQUEUE, M_WAITOK | M_ZERO); + mtx_init(&qgroup->tqg_lock, "taskqgroup", NULL, MTX_DEF); + qgroup->tqg_name = name; + LIST_INIT(&qgroup->tqg_queue[0].tgc_tasks); + + return (qgroup); +} + +void +taskqgroup_destroy(struct taskqgroup *qgroup) +{ + +} diff --git a/sys/kern/subr_param.c b/sys/kern/subr_param.c index 65fb3e7..e48072c 100644 --- a/sys/kern/subr_param.c +++ b/sys/kern/subr_param.c @@ -148,6 +148,7 @@ static const char *const vm_guest_sysctl_names[] = { "xen", "hv", "vmware", + "kvm", NULL }; CTASSERT(nitems(vm_guest_sysctl_names) - 1 == VM_LAST); diff --git a/sys/kern/subr_syscall.c b/sys/kern/subr_syscall.c index aad2a1e..3e2a3b3 100644 --- a/sys/kern/subr_syscall.c +++ b/sys/kern/subr_syscall.c @@ -242,5 +242,13 @@ again: cv_timedwait(&p2->p_pwait, &p2->p_mtx, hz); } PROC_UNLOCK(p2); + + if (td->td_dbgflags & TDB_VFORK) { + PROC_LOCK(p); + if (p->p_ptevents & PTRACE_VFORK) + ptracestop(td, SIGTRAP); + td->td_dbgflags &= ~TDB_VFORK; + PROC_UNLOCK(p); + } } } diff --git a/sys/kern/subr_taskqueue.c b/sys/kern/subr_taskqueue.c index 12124b8..5a20148 100644 --- a/sys/kern/subr_taskqueue.c +++ b/sys/kern/subr_taskqueue.c @@ -261,22 +261,6 @@ taskqueue_enqueue_locked(struct taskqueue *queue, struct task *task) } int -grouptaskqueue_enqueue(struct taskqueue *queue, struct task *task) -{ - TQ_LOCK(queue); - if (task->ta_pending) { - TQ_UNLOCK(queue); - return (0); - } - STAILQ_INSERT_TAIL(&queue->tq_queue, task, ta_link); - task->ta_pending = 1; - TQ_UNLOCK(queue); - if ((queue->tq_flags & TQ_FLAGS_BLOCKED) == 0) - queue->tq_enqueue(queue->tq_context); - return (0); -} - -int taskqueue_enqueue(struct taskqueue *queue, struct task *task) { int res; @@ -806,347 +790,3 @@ taskqueue_member(struct taskqueue *queue, struct thread *td) } return (ret); } - -struct taskqgroup_cpu { - LIST_HEAD(, grouptask) tgc_tasks; - struct taskqueue *tgc_taskq; - int tgc_cnt; - int tgc_cpu; -}; - -struct taskqgroup { - struct taskqgroup_cpu tqg_queue[MAXCPU]; - struct mtx tqg_lock; - char * tqg_name; - int tqg_adjusting; - int tqg_stride; - int tqg_cnt; -}; - -struct taskq_bind_task { - struct task bt_task; - int bt_cpuid; -}; - -static void -taskqgroup_cpu_create(struct taskqgroup *qgroup, int idx) -{ - struct taskqgroup_cpu *qcpu; - int i, j; - - qcpu = &qgroup->tqg_queue[idx]; - LIST_INIT(&qcpu->tgc_tasks); - qcpu->tgc_taskq = taskqueue_create_fast(NULL, M_WAITOK, - taskqueue_thread_enqueue, &qcpu->tgc_taskq); - taskqueue_start_threads(&qcpu->tgc_taskq, 1, PI_SOFT, - "%s_%d", qgroup->tqg_name, idx); - - for (i = CPU_FIRST(), j = 0; j < idx * qgroup->tqg_stride; - j++, i = CPU_NEXT(i)) { - /* - * Wait: evaluate the idx * qgroup->tqg_stride'th CPU, - * potentially wrapping the actual count - */ - } - qcpu->tgc_cpu = i; -} - -static void -taskqgroup_cpu_remove(struct taskqgroup *qgroup, int idx) -{ - - taskqueue_free(qgroup->tqg_queue[idx].tgc_taskq); -} - -/* - * Find the taskq with least # of tasks that doesn't currently have any - * other queues from the uniq identifier. - */ -static int -taskqgroup_find(struct taskqgroup *qgroup, void *uniq) -{ - struct grouptask *n; - int i, idx, mincnt; - int strict; - - mtx_assert(&qgroup->tqg_lock, MA_OWNED); - if (qgroup->tqg_cnt == 0) - return (0); - idx = -1; - mincnt = INT_MAX; - /* - * Two passes; First scan for a queue with the least tasks that - * does not already service this uniq id. If that fails simply find - * the queue with the least total tasks; - */ - for (strict = 1; mincnt == INT_MAX; strict = 0) { - for (i = 0; i < qgroup->tqg_cnt; i++) { - if (qgroup->tqg_queue[i].tgc_cnt > mincnt) - continue; - if (strict) { - LIST_FOREACH(n, - &qgroup->tqg_queue[i].tgc_tasks, gt_list) - if (n->gt_uniq == uniq) - break; - if (n != NULL) - continue; - } - mincnt = qgroup->tqg_queue[i].tgc_cnt; - idx = i; - } - } - if (idx == -1) - panic("taskqgroup_find: Failed to pick a qid."); - - return (idx); -} - -void -taskqgroup_attach(struct taskqgroup *qgroup, struct grouptask *gtask, - void *uniq, int irq, char *name) -{ - cpuset_t mask; - int qid; - - gtask->gt_uniq = uniq; - gtask->gt_name = name; - gtask->gt_irq = irq; - gtask->gt_cpu = -1; - mtx_lock(&qgroup->tqg_lock); - qid = taskqgroup_find(qgroup, uniq); - qgroup->tqg_queue[qid].tgc_cnt++; - LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list); - gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq; - if (irq != -1 && smp_started) { - CPU_ZERO(&mask); - CPU_SET(qgroup->tqg_queue[qid].tgc_cpu, &mask); - mtx_unlock(&qgroup->tqg_lock); - intr_setaffinity(irq, &mask); - } else - mtx_unlock(&qgroup->tqg_lock); -} - -int -taskqgroup_attach_cpu(struct taskqgroup *qgroup, struct grouptask *gtask, - void *uniq, int cpu, int irq, char *name) -{ - cpuset_t mask; - int i, qid; - - qid = -1; - gtask->gt_uniq = uniq; - gtask->gt_name = name; - gtask->gt_irq = irq; - gtask->gt_cpu = cpu; - mtx_lock(&qgroup->tqg_lock); - if (smp_started) { - for (i = 0; i < qgroup->tqg_cnt; i++) - if (qgroup->tqg_queue[i].tgc_cpu == cpu) { - qid = i; - break; - } - if (qid == -1) { - mtx_unlock(&qgroup->tqg_lock); - return (EINVAL); - } - } else - qid = 0; - qgroup->tqg_queue[qid].tgc_cnt++; - LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list); - gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq; - if (irq != -1 && smp_started) { - CPU_ZERO(&mask); - CPU_SET(qgroup->tqg_queue[qid].tgc_cpu, &mask); - mtx_unlock(&qgroup->tqg_lock); - intr_setaffinity(irq, &mask); - } else - mtx_unlock(&qgroup->tqg_lock); - return (0); -} - -void -taskqgroup_detach(struct taskqgroup *qgroup, struct grouptask *gtask) -{ - int i; - - mtx_lock(&qgroup->tqg_lock); - for (i = 0; i < qgroup->tqg_cnt; i++) - if (qgroup->tqg_queue[i].tgc_taskq == gtask->gt_taskqueue) - break; - if (i == qgroup->tqg_cnt) - panic("taskqgroup_detach: task not in group\n"); - qgroup->tqg_queue[i].tgc_cnt--; - LIST_REMOVE(gtask, gt_list); - mtx_unlock(&qgroup->tqg_lock); - gtask->gt_taskqueue = NULL; -} - -static void -taskqgroup_binder(void *ctx, int pending) -{ - struct taskq_bind_task *task = (struct taskq_bind_task *)ctx; - cpuset_t mask; - int error; - - CPU_ZERO(&mask); - CPU_SET(task->bt_cpuid, &mask); - error = cpuset_setthread(curthread->td_tid, &mask); - thread_lock(curthread); - sched_bind(curthread, task->bt_cpuid); - thread_unlock(curthread); - - if (error) - printf("taskqgroup_binder: setaffinity failed: %d\n", - error); - free(task, M_DEVBUF); -} - -static void -taskqgroup_bind(struct taskqgroup *qgroup) -{ - struct taskq_bind_task *task; - int i; - - /* - * Bind taskqueue threads to specific CPUs, if they have been assigned - * one. - */ - for (i = 0; i < qgroup->tqg_cnt; i++) { - task = malloc(sizeof (*task), M_DEVBUF, M_NOWAIT); - TASK_INIT(&task->bt_task, 0, taskqgroup_binder, task); - task->bt_cpuid = qgroup->tqg_queue[i].tgc_cpu; - taskqueue_enqueue(qgroup->tqg_queue[i].tgc_taskq, - &task->bt_task); - } -} - -static int -_taskqgroup_adjust(struct taskqgroup *qgroup, int cnt, int stride) -{ - LIST_HEAD(, grouptask) gtask_head = LIST_HEAD_INITIALIZER(NULL); - cpuset_t mask; - struct grouptask *gtask; - int i, k, old_cnt, qid, cpu; - - mtx_assert(&qgroup->tqg_lock, MA_OWNED); - - if (cnt < 1 || cnt * stride > mp_ncpus || !smp_started) { - printf("taskqgroup_adjust failed cnt: %d stride: %d " - "mp_ncpus: %d smp_started: %d\n", cnt, stride, mp_ncpus, - smp_started); - return (EINVAL); - } - if (qgroup->tqg_adjusting) { - printf("taskqgroup_adjust failed: adjusting\n"); - return (EBUSY); - } - qgroup->tqg_adjusting = 1; - old_cnt = qgroup->tqg_cnt; - mtx_unlock(&qgroup->tqg_lock); - /* - * Set up queue for tasks added before boot. - */ - if (old_cnt == 0) { - LIST_SWAP(>ask_head, &qgroup->tqg_queue[0].tgc_tasks, - grouptask, gt_list); - qgroup->tqg_queue[0].tgc_cnt = 0; - } - - /* - * If new taskq threads have been added. - */ - for (i = old_cnt; i < cnt; i++) - taskqgroup_cpu_create(qgroup, i); - mtx_lock(&qgroup->tqg_lock); - qgroup->tqg_cnt = cnt; - qgroup->tqg_stride = stride; - - /* - * Adjust drivers to use new taskqs. - */ - for (i = 0; i < old_cnt; i++) { - while ((gtask = LIST_FIRST(&qgroup->tqg_queue[i].tgc_tasks))) { - LIST_REMOVE(gtask, gt_list); - qgroup->tqg_queue[i].tgc_cnt--; - LIST_INSERT_HEAD(>ask_head, gtask, gt_list); - } - } - - while ((gtask = LIST_FIRST(>ask_head))) { - LIST_REMOVE(gtask, gt_list); - if (gtask->gt_cpu == -1) - qid = taskqgroup_find(qgroup, gtask->gt_uniq); - else { - for (i = 0; i < qgroup->tqg_cnt; i++) - if (qgroup->tqg_queue[i].tgc_cpu == gtask->gt_cpu) { - qid = i; - break; - } - } - qgroup->tqg_queue[qid].tgc_cnt++; - LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, - gt_list); - gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq; - } - /* - * Set new CPU and IRQ affinity - */ - cpu = CPU_FIRST(); - for (i = 0; i < cnt; i++) { - qgroup->tqg_queue[i].tgc_cpu = cpu; - for (k = 0; k < qgroup->tqg_stride; k++) - cpu = CPU_NEXT(cpu); - CPU_ZERO(&mask); - CPU_SET(qgroup->tqg_queue[i].tgc_cpu, &mask); - LIST_FOREACH(gtask, &qgroup->tqg_queue[i].tgc_tasks, gt_list) { - if (gtask->gt_irq == -1) - continue; - intr_setaffinity(gtask->gt_irq, &mask); - } - } - mtx_unlock(&qgroup->tqg_lock); - - /* - * If taskq thread count has been reduced. - */ - for (i = cnt; i < old_cnt; i++) - taskqgroup_cpu_remove(qgroup, i); - - mtx_lock(&qgroup->tqg_lock); - qgroup->tqg_adjusting = 0; - - taskqgroup_bind(qgroup); - - return (0); -} - -int -taskqgroup_adjust(struct taskqgroup *qgroup, int cpu, int stride) -{ - int error; - - mtx_lock(&qgroup->tqg_lock); - error = _taskqgroup_adjust(qgroup, cpu, stride); - mtx_unlock(&qgroup->tqg_lock); - - return (error); -} - -struct taskqgroup * -taskqgroup_create(char *name) -{ - struct taskqgroup *qgroup; - - qgroup = malloc(sizeof(*qgroup), M_TASKQUEUE, M_WAITOK | M_ZERO); - mtx_init(&qgroup->tqg_lock, "taskqgroup", NULL, MTX_DEF); - qgroup->tqg_name = name; - LIST_INIT(&qgroup->tqg_queue[0].tgc_tasks); - - return (qgroup); -} - -void -taskqgroup_destroy(struct taskqgroup *qgroup) -{ - -} diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index 751db15..69a3e4b 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -693,12 +693,13 @@ sys_ptrace(struct thread *td, struct ptrace_args *uap) #endif void -proc_set_traced(struct proc *p) +proc_set_traced(struct proc *p, bool stop) { PROC_LOCK_ASSERT(p, MA_OWNED); p->p_flag |= P_TRACED; - p->p_flag2 |= P2_PTRACE_FSTP; + if (stop) + p->p_flag2 |= P2_PTRACE_FSTP; p->p_ptevents = PTRACE_DEFAULT; p->p_oppid = p->p_pptr->p_pid; } @@ -910,7 +911,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) switch (req) { case PT_TRACE_ME: /* set my trace flag and "owner" so it can read/write me */ - proc_set_traced(p); + proc_set_traced(p, false); if (p->p_flag & P_PPWAIT) p->p_flag |= P_PPTRACE; CTR1(KTR_PTRACE, "PT_TRACE_ME: pid %d", p->p_pid); @@ -927,7 +928,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) * The old parent is remembered so we can put things back * on a "detach". */ - proc_set_traced(p); + proc_set_traced(p, true); if (p->p_pptr != td->td_proc) { proc_reparent(p, td->td_proc); } @@ -1000,7 +1001,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) } tmp = *(int *)addr; if ((tmp & ~(PTRACE_EXEC | PTRACE_SCE | PTRACE_SCX | - PTRACE_FORK | PTRACE_LWP)) != 0) { + PTRACE_FORK | PTRACE_LWP | PTRACE_VFORK)) != 0) { error = EINVAL; break; } @@ -1321,7 +1322,11 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) if (td2->td_dbgflags & TDB_FORK) { pl->pl_flags |= PL_FLAG_FORKED; pl->pl_child_pid = td2->td_dbg_forked; - } + if (td2->td_dbgflags & TDB_VFORK) + pl->pl_flags |= PL_FLAG_VFORKED; + } else if ((td2->td_dbgflags & (TDB_SCX | TDB_VFORK)) == + TDB_VFORK) + pl->pl_flags |= PL_FLAG_VFORK_DONE; if (td2->td_dbgflags & TDB_CHILD) pl->pl_flags |= PL_FLAG_CHILD; if (td2->td_dbgflags & TDB_BORN) diff --git a/sys/kern/vfs_aio.c b/sys/kern/vfs_aio.c index b48eea1..dce0e1a 100644 --- a/sys/kern/vfs_aio.c +++ b/sys/kern/vfs_aio.c @@ -1441,7 +1441,7 @@ static struct aiocb_ops aiocb_ops_osigevent = { */ int aio_aqueue(struct thread *td, struct aiocb *ujob, struct aioliojob *lj, - int type, struct aiocb_ops *ops) + int type, struct aiocb_ops *ops) { struct proc *p = td->td_proc; cap_rights_t rights; @@ -2476,14 +2476,9 @@ static int kern_aio_fsync(struct thread *td, int op, struct aiocb *ujob, struct aiocb_ops *ops) { - struct proc *p = td->td_proc; - struct kaioinfo *ki; if (op != O_SYNC) /* XXX lack of O_DSYNC */ return (EINVAL); - ki = p->p_aioinfo; - if (ki == NULL) - aio_init_aioinfo(p); return (aio_aqueue(td, ujob, NULL, LIO_SYNC, ops)); } diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c index a7977bf..d9182f2 100644 --- a/sys/kern/vfs_default.c +++ b/sys/kern/vfs_default.c @@ -640,7 +640,6 @@ int vop_stdfsync(ap) struct vop_fsync_args /* { struct vnode *a_vp; - struct ucred *a_cred; int a_waitfor; struct thread *a_td; } */ *ap; |
