Date: Thu, 17 Oct 2019 06:32:35 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r353678 - in head/sys: kern sys Message-ID: <201910170632.x9H6WZUv038903@repo.freebsd.org>
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Author: avg Date: Thu Oct 17 06:32:34 2019 New Revision: 353678 URL: https://svnweb.freebsd.org/changeset/base/353678 Log: provide a way to assign taskqueue threads to a kernel process This can be used to group all threads belonging to a single logical entity under a common kernel process. I am planning to use the new interface for ZFS threads. MFC after: 4 weeks Modified: head/sys/kern/subr_taskqueue.c head/sys/sys/taskqueue.h Modified: head/sys/kern/subr_taskqueue.c ============================================================================== --- head/sys/kern/subr_taskqueue.c Thu Oct 17 06:21:09 2019 (r353677) +++ head/sys/kern/subr_taskqueue.c Thu Oct 17 06:32:34 2019 (r353678) @@ -654,7 +654,7 @@ taskqueue_swi_giant_run(void *dummy) static int _taskqueue_start_threads(struct taskqueue **tqp, int count, int pri, - cpuset_t *mask, const char *name, va_list ap) + cpuset_t *mask, struct proc *p, const char *name, va_list ap) { char ktname[MAXCOMLEN + 1]; struct thread *td; @@ -676,10 +676,10 @@ _taskqueue_start_threads(struct taskqueue **tqp, int c for (i = 0; i < count; i++) { if (count == 1) - error = kthread_add(taskqueue_thread_loop, tqp, NULL, + error = kthread_add(taskqueue_thread_loop, tqp, p, &tq->tq_threads[i], RFSTOPPED, 0, "%s", ktname); else - error = kthread_add(taskqueue_thread_loop, tqp, NULL, + error = kthread_add(taskqueue_thread_loop, tqp, p, &tq->tq_threads[i], RFSTOPPED, 0, "%s_%d", ktname, i); if (error) { @@ -729,12 +729,25 @@ taskqueue_start_threads(struct taskqueue **tqp, int co int error; va_start(ap, name); - error = _taskqueue_start_threads(tqp, count, pri, NULL, name, ap); + error = _taskqueue_start_threads(tqp, count, pri, NULL, NULL, name, ap); va_end(ap); return (error); } int +taskqueue_start_threads_in_proc(struct taskqueue **tqp, int count, int pri, + struct proc *proc, const char *name, ...) +{ + va_list ap; + int error; + + va_start(ap, name); + error = _taskqueue_start_threads(tqp, count, pri, NULL, proc, name, ap); + va_end(ap); + return (error); +} + +int taskqueue_start_threads_cpuset(struct taskqueue **tqp, int count, int pri, cpuset_t *mask, const char *name, ...) { @@ -742,7 +755,7 @@ taskqueue_start_threads_cpuset(struct taskqueue **tqp, int error; va_start(ap, name); - error = _taskqueue_start_threads(tqp, count, pri, mask, name, ap); + error = _taskqueue_start_threads(tqp, count, pri, mask, NULL, name, ap); va_end(ap); return (error); } Modified: head/sys/sys/taskqueue.h ============================================================================== --- head/sys/sys/taskqueue.h Thu Oct 17 06:21:09 2019 (r353677) +++ head/sys/sys/taskqueue.h Thu Oct 17 06:32:34 2019 (r353678) @@ -42,6 +42,7 @@ struct taskqueue; struct taskqgroup; +struct proc; struct thread; struct timeout_task { @@ -75,7 +76,9 @@ struct taskqueue *taskqueue_create(const char *name, i taskqueue_enqueue_fn enqueue, void *context); int taskqueue_start_threads(struct taskqueue **tqp, int count, int pri, - const char *name, ...) __printflike(4, 5); + const char *name, ...) __printflike(4, 5); +int taskqueue_start_threads_in_proc(struct taskqueue **tqp, int count, + int pri, struct proc *p, const char *name, ...) __printflike(5, 6); int taskqueue_start_threads_cpuset(struct taskqueue **tqp, int count, int pri, cpuset_t *mask, const char *name, ...) __printflike(5, 6); int taskqueue_enqueue(struct taskqueue *queue, struct task *task);
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