diff options
Diffstat (limited to 'sys/kern/subr_taskqueue.c')
| -rw-r--r-- | sys/kern/subr_taskqueue.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sys/kern/subr_taskqueue.c b/sys/kern/subr_taskqueue.c index 9622098..4ae91e7 100644 --- a/sys/kern/subr_taskqueue.c +++ b/sys/kern/subr_taskqueue.c @@ -37,9 +37,16 @@ __FBSDID("$FreeBSD$"); #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/proc.h> +#include <sys/sysctl.h> #include <sys/taskqueue.h> +#include <sys/time.h> #include <sys/unistd.h> +int tq_in; +SYSCTL_INT(_kern, OID_AUTO, tq_in, CTLFLAG_RD, &tq_in, 0, ""); +int tq_out; +SYSCTL_INT(_kern, OID_AUTO, tq_out, CTLFLAG_RD, &tq_out, 0, ""); + static MALLOC_DEFINE(M_TASKQUEUE, "taskqueue", "Task Queues"); static void *taskqueue_giant_ih; static void *taskqueue_ih; @@ -166,6 +173,9 @@ taskqueue_enqueue(struct taskqueue *queue, struct task *task) return 0; } + getnanotime(&task->ta_queuetime); + tq_in++; + /* * Optimise the case when all tasks have the same priority. */ @@ -197,6 +207,7 @@ void taskqueue_run(struct taskqueue *queue) { struct task *task; + struct timespec tv; int owned, pending; owned = mtx_owned(&queue->tq_mutex); @@ -212,8 +223,16 @@ taskqueue_run(struct taskqueue *queue) pending = task->ta_pending; task->ta_pending = 0; queue->tq_running = task; + tq_out++; mtx_unlock(&queue->tq_mutex); + getnanotime(&tv); + timespecsub(&tv, &task->ta_queuetime); + if (tv.tv_nsec >= 0500000000) { + printf("taskqueue_run: warning, queue time of %d.%09ld " + "for context %p\n", tv.tv_sec, tv.tv_nsec, + task->ta_func); + } task->ta_func(task->ta_context, pending); mtx_lock(&queue->tq_mutex); |
