Differential D15143 Diff 41873 sys/kern/subr_gtaskqueue.c

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sys/kern/subr_gtaskqueue.c

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#include <sys/mutex.h>		#include <sys/mutex.h>
#include <sys/proc.h>		#include <sys/proc.h>
#include <sys/sched.h>		#include <sys/sched.h>
#include <sys/smp.h>		#include <sys/smp.h>
#include <sys/gtaskqueue.h>		#include <sys/gtaskqueue.h>
#include <sys/unistd.h>		#include <sys/unistd.h>
#include <machine/stdarg.h>		#include <machine/stdarg.h>

static MALLOC_DEFINE(M_GTASKQUEUE, "taskqueue", "Task Queues");		static MALLOC_DEFINE(M_GTASKQUEUE, "gtaskqueue", "Group Task Queues");
static void gtaskqueue_thread_enqueue(void *);		static void gtaskqueue_thread_enqueue(void *);
static void gtaskqueue_thread_loop(void *arg);		static void gtaskqueue_thread_loop(void *arg);

TASKQGROUP_DEFINE(softirq, mp_ncpus, 1);		TASKQGROUP_DEFINE(softirq, mp_ncpus, 1);

struct gtaskqueue_busy {		struct gtaskqueue_busy {
struct gtask *tb_running;		struct gtask *tb_running;
TAILQ_ENTRY(gtaskqueue_busy) tb_link;		TAILQ_ENTRY(gtaskqueue_busy) tb_link;
▲ Show 20 Lines • Show All 69 Lines • ▼ Show 20 Lines	_gtaskqueue_create(const char *name, int mflags,

tq_name = malloc(TASKQUEUE_NAMELEN, M_GTASKQUEUE, mflags \| M_ZERO);		tq_name = malloc(TASKQUEUE_NAMELEN, M_GTASKQUEUE, mflags \| M_ZERO);
if (!tq_name)		if (!tq_name)
return (NULL);		return (NULL);

snprintf(tq_name, TASKQUEUE_NAMELEN, "%s", (name) ? name : "taskqueue");		snprintf(tq_name, TASKQUEUE_NAMELEN, "%s", (name) ? name : "taskqueue");

queue = malloc(sizeof(struct gtaskqueue), M_GTASKQUEUE, mflags \| M_ZERO);		queue = malloc(sizeof(struct gtaskqueue), M_GTASKQUEUE, mflags \| M_ZERO);
if (!queue)		if (!queue) {
		free(tq_name, M_GTASKQUEUE);
return (NULL);		return (NULL);
		}

STAILQ_INIT(&queue->tq_queue);		STAILQ_INIT(&queue->tq_queue);
TAILQ_INIT(&queue->tq_active);		TAILQ_INIT(&queue->tq_active);
queue->tq_enqueue = enqueue;		queue->tq_enqueue = enqueue;
queue->tq_context = context;		queue->tq_context = context;
queue->tq_name = tq_name;		queue->tq_name = tq_name;
queue->tq_spin = (mtxflags & MTX_SPIN) != 0;		queue->tq_spin = (mtxflags & MTX_SPIN) != 0;
queue->tq_flags \|= TQ_FLAGS_ACTIVE;		queue->tq_flags \|= TQ_FLAGS_ACTIVE;
▲ Show 20 Lines • Show All 511 Lines • ▼ Show 20 Lines
SYSINIT(tqg_record_smp_started, SI_SUB_SMP, SI_ORDER_FOURTH,		SYSINIT(tqg_record_smp_started, SI_SUB_SMP, SI_ORDER_FOURTH,
tqg_record_smp_started, NULL);		tqg_record_smp_started, NULL);

void		void
taskqgroup_attach(struct taskqgroup qgroup, struct grouptask gtask,		taskqgroup_attach(struct taskqgroup qgroup, struct grouptask gtask,
void uniq, int irq, char name)		void uniq, int irq, char name)
{		{
cpuset_t mask;		cpuset_t mask;
int qid;		int qid, error;

gtask->gt_uniq = uniq;		gtask->gt_uniq = uniq;
gtask->gt_name = name;		snprintf(gtask->gt_name, GROUPTASK_NAMELEN, "%s", name ? name : "grouptask");
gtask->gt_irq = irq;		gtask->gt_irq = irq;
gtask->gt_cpu = -1;		gtask->gt_cpu = -1;
mtx_lock(&qgroup->tqg_lock);		mtx_lock(&qgroup->tqg_lock);
qid = taskqgroup_find(qgroup, uniq);		qid = taskqgroup_find(qgroup, uniq);
qgroup->tqg_queue[qid].tgc_cnt++;		qgroup->tqg_queue[qid].tgc_cnt++;
LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list);		LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list);
gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;		gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;
if (irq != -1 && tqg_smp_started) {		if (irq != -1 && tqg_smp_started) {
gtask->gt_cpu = qgroup->tqg_queue[qid].tgc_cpu;		gtask->gt_cpu = qgroup->tqg_queue[qid].tgc_cpu;
CPU_ZERO(&mask);		CPU_ZERO(&mask);
CPU_SET(qgroup->tqg_queue[qid].tgc_cpu, &mask);		CPU_SET(qgroup->tqg_queue[qid].tgc_cpu, &mask);
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);
intr_setaffinity(irq, &mask);		error = intr_setaffinity(irq, CPU_WHICH_IRQ, &mask);
		if (error)
		printf("%s: setaffinity failed for %s: %d\n", __func__, gtask->gt_name, error);
} else		} else
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);
}		}

static void		static void
taskqgroup_attach_deferred(struct taskqgroup qgroup, struct grouptask gtask)		taskqgroup_attach_deferred(struct taskqgroup qgroup, struct grouptask gtask)
{		{
cpuset_t mask;		cpuset_t mask;
int qid, cpu;		int qid, cpu, error;

mtx_lock(&qgroup->tqg_lock);		mtx_lock(&qgroup->tqg_lock);
qid = taskqgroup_find(qgroup, gtask->gt_uniq);		qid = taskqgroup_find(qgroup, gtask->gt_uniq);
cpu = qgroup->tqg_queue[qid].tgc_cpu;		cpu = qgroup->tqg_queue[qid].tgc_cpu;
if (gtask->gt_irq != -1) {		if (gtask->gt_irq != -1) {
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);

CPU_ZERO(&mask);		CPU_ZERO(&mask);
CPU_SET(cpu, &mask);		CPU_SET(cpu, &mask);
intr_setaffinity(gtask->gt_irq, &mask);		error = intr_setaffinity(gtask->gt_irq, CPU_WHICH_IRQ, &mask);

mtx_lock(&qgroup->tqg_lock);		mtx_lock(&qgroup->tqg_lock);
		if (error)
		printf("%s: %s setaffinity failed: %d\n", __func__, gtask->gt_name, error);

}		}
qgroup->tqg_queue[qid].tgc_cnt++;		qgroup->tqg_queue[qid].tgc_cnt++;

LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask,		LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask,
gt_list);		gt_list);
MPASS(qgroup->tqg_queue[qid].tgc_taskq != NULL);		MPASS(qgroup->tqg_queue[qid].tgc_taskq != NULL);
gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;		gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);
}		}

int		int
taskqgroup_attach_cpu(struct taskqgroup qgroup, struct grouptask gtask,		taskqgroup_attach_cpu(struct taskqgroup qgroup, struct grouptask gtask,
void uniq, int cpu, int irq, char name)		void uniq, int cpu, int irq, char name)
{		{
cpuset_t mask;		cpuset_t mask;
int i, qid;		int i, qid, error;

qid = -1;		qid = -1;
gtask->gt_uniq = uniq;		gtask->gt_uniq = uniq;
gtask->gt_name = name;		snprintf(gtask->gt_name, GROUPTASK_NAMELEN, "%s", name ? name : "grouptask");
gtask->gt_irq = irq;		gtask->gt_irq = irq;
gtask->gt_cpu = cpu;		gtask->gt_cpu = cpu;
mtx_lock(&qgroup->tqg_lock);		mtx_lock(&qgroup->tqg_lock);
if (tqg_smp_started) {		if (tqg_smp_started) {
for (i = 0; i < qgroup->tqg_cnt; i++)		for (i = 0; i < qgroup->tqg_cnt; i++)
if (qgroup->tqg_queue[i].tgc_cpu == cpu) {		if (qgroup->tqg_queue[i].tgc_cpu == cpu) {
qid = i;		qid = i;
break;		break;
}		}
if (qid == -1) {		if (qid == -1) {
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);
		printf("%s: qid not found for %s cpu=%d\n", __func__, gtask->gt_name, cpu);
return (EINVAL);		return (EINVAL);
}		}
} else		} else
qid = 0;		qid = 0;
qgroup->tqg_queue[qid].tgc_cnt++;		qgroup->tqg_queue[qid].tgc_cnt++;
LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list);		LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list);
gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;		gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;
cpu = qgroup->tqg_queue[qid].tgc_cpu;		cpu = qgroup->tqg_queue[qid].tgc_cpu;
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);

CPU_ZERO(&mask);		CPU_ZERO(&mask);
CPU_SET(cpu, &mask);		CPU_SET(cpu, &mask);
if (irq != -1 && tqg_smp_started)		if (irq != -1 && tqg_smp_started) {
intr_setaffinity(irq, &mask);		error = intr_setaffinity(irq, CPU_WHICH_IRQ, &mask);
		if (error)
		printf("%s: setaffinity failed: %d\n", __func__, error);
		}
return (0);		return (0);
}		}

static int		static int
taskqgroup_attach_cpu_deferred(struct taskqgroup qgroup, struct grouptask gtask)		taskqgroup_attach_cpu_deferred(struct taskqgroup qgroup, struct grouptask gtask)
{		{
cpuset_t mask;		cpuset_t mask;
int i, qid, irq, cpu;		int i, qid, irq, cpu, error;

qid = -1;		qid = -1;
irq = gtask->gt_irq;		irq = gtask->gt_irq;
cpu = gtask->gt_cpu;		cpu = gtask->gt_cpu;
MPASS(tqg_smp_started);		MPASS(tqg_smp_started);
mtx_lock(&qgroup->tqg_lock);		mtx_lock(&qgroup->tqg_lock);
for (i = 0; i < qgroup->tqg_cnt; i++)		for (i = 0; i < qgroup->tqg_cnt; i++)
if (qgroup->tqg_queue[i].tgc_cpu == cpu) {		if (qgroup->tqg_queue[i].tgc_cpu == cpu) {
qid = i;		qid = i;
break;		break;
}		}
if (qid == -1) {		if (qid == -1) {
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);
		printf("%s: qid not found for %s cpu=%d\n", __func__, gtask->gt_name, cpu);
return (EINVAL);		return (EINVAL);
}		}
qgroup->tqg_queue[qid].tgc_cnt++;		qgroup->tqg_queue[qid].tgc_cnt++;
LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list);		LIST_INSERT_HEAD(&qgroup->tqg_queue[qid].tgc_tasks, gtask, gt_list);
MPASS(qgroup->tqg_queue[qid].tgc_taskq != NULL);		MPASS(qgroup->tqg_queue[qid].tgc_taskq != NULL);
gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;		gtask->gt_taskqueue = qgroup->tqg_queue[qid].tgc_taskq;
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);

CPU_ZERO(&mask);		CPU_ZERO(&mask);
CPU_SET(cpu, &mask);		CPU_SET(cpu, &mask);

if (irq != -1)		if (irq != -1) {
intr_setaffinity(irq, &mask);		error = intr_setaffinity(irq, CPU_WHICH_IRQ, &mask);
		if (error)
		printf("%s: setaffinity failed: %d\n", __func__, error);
		}
return (0);		return (0);
}		}

void		void
taskqgroup_detach(struct taskqgroup qgroup, struct grouptask gtask)		taskqgroup_detach(struct taskqgroup qgroup, struct grouptask gtask)
{		{
int i;		int i;

mtx_lock(&qgroup->tqg_lock);		mtx_lock(&qgroup->tqg_lock);
for (i = 0; i < qgroup->tqg_cnt; i++)		for (i = 0; i < qgroup->tqg_cnt; i++)
if (qgroup->tqg_queue[i].tgc_taskq == gtask->gt_taskqueue)		if (qgroup->tqg_queue[i].tgc_taskq == gtask->gt_taskqueue)
break;		break;
if (i == qgroup->tqg_cnt)		if (i == qgroup->tqg_cnt)
panic("taskqgroup_detach: task not in group\n");		panic("taskqgroup_detach: task %s not in group\n", gtask->gt_name);
qgroup->tqg_queue[i].tgc_cnt--;		qgroup->tqg_queue[i].tgc_cnt--;
LIST_REMOVE(gtask, gt_list);		LIST_REMOVE(gtask, gt_list);
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);
gtask->gt_taskqueue = NULL;		gtask->gt_taskqueue = NULL;
}		}

static void		static void
taskqgroup_binder(void *ctx)		taskqgroup_binder(void *ctx)
{		{
struct taskq_bind_task gtask = (struct taskq_bind_task )ctx;		struct taskq_bind_task gtask = (struct taskq_bind_task )ctx;
cpuset_t mask;		cpuset_t mask;
int error;		int error;

CPU_ZERO(&mask);		CPU_ZERO(&mask);
CPU_SET(gtask->bt_cpuid, &mask);		CPU_SET(gtask->bt_cpuid, &mask);
error = cpuset_setthread(curthread->td_tid, &mask);		error = cpuset_setthread(curthread->td_tid, &mask);
thread_lock(curthread);		thread_lock(curthread);
sched_bind(curthread, gtask->bt_cpuid);		sched_bind(curthread, gtask->bt_cpuid);
thread_unlock(curthread);		thread_unlock(curthread);

if (error)		if (error)
printf("taskqgroup_binder: setaffinity failed: %d\n",		printf("%s: setaffinity failed: %d\n", __func__,
error);		error);
free(gtask, M_DEVBUF);		free(gtask, M_DEVBUF);
}		}

static void		static void
taskqgroup_bind(struct taskqgroup *qgroup)		taskqgroup_bind(struct taskqgroup *qgroup)
{		{
struct taskq_bind_task *gtask;		struct taskq_bind_task *gtask;
Show All 26 Lines	_taskqgroup_adjust(struct taskqgroup *qgroup, int cnt, int stride)

if (cnt < 1 \|\| cnt * stride > mp_ncpus \|\| !tqg_smp_started) {		if (cnt < 1 \|\| cnt * stride > mp_ncpus \|\| !tqg_smp_started) {
printf("%s: failed cnt: %d stride: %d "		printf("%s: failed cnt: %d stride: %d "
"mp_ncpus: %d tqg_smp_started: %d\n",		"mp_ncpus: %d tqg_smp_started: %d\n",
__func__, cnt, stride, mp_ncpus, tqg_smp_started);		__func__, cnt, stride, mp_ncpus, tqg_smp_started);
return (EINVAL);		return (EINVAL);
}		}
if (qgroup->tqg_adjusting) {		if (qgroup->tqg_adjusting) {
printf("taskqgroup_adjust failed: adjusting\n");		printf("%s failed: adjusting\n", __func__);
return (EBUSY);		return (EBUSY);
}		}
qgroup->tqg_adjusting = 1;		qgroup->tqg_adjusting = 1;
old_cnt = qgroup->tqg_cnt;		old_cnt = qgroup->tqg_cnt;
old_cpu = 0;		old_cpu = 0;
if (old_cnt < cnt)		if (old_cnt < cnt)
old_cpu = qgroup->tqg_queue[old_cnt].tgc_cpu;		old_cpu = qgroup->tqg_queue[old_cnt].tgc_cpu;
mtx_unlock(&qgroup->tqg_lock);		mtx_unlock(&qgroup->tqg_lock);
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