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Date: Thu, 20 Jul 2006 14:22:32 +0200 From: Rolf Eike Beer <eike-kernel@...tec.de> To: Stefan Richter <stefanr@...6.in-berlin.de> Cc: Martin Waitz <tali@...ingilde.org>, Randy Dunlap <rdunlap@...otime.net>, Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org Subject: [PATCH][kernel-doc] Add DocBook documentation for workqueue functions [kernel-doc] Add DocBook documentation for workqueue functions kernel/workqueue.c was omitted from generating kernel documentation. This adds a new section "Workqueues and Kevents" and adds documentation for some of the functions. Some functions in this file already had DocBook-style comments, now they finally become visible. Signed-off-by: Rolf Eike Beer <eike-kernel@...tec.de> --- commit 35687dd5b77d8dede736e7d622e1359f6c25b8f8 tree bbdd1cf655fb5ac9cd2a1205cd428fa0d6a21be8 parent a050dbf5ec50ebb71ebb455fac68dfd0a9e21bb6 author Rolf Eike Beer <eike-kernel@...tec.de> Thu, 20 Jul 2006 14:19:44 +0200 committer Rolf Eike Beer <beer@...o-eb-i34d.silicon-software.de> Thu, 20 Jul 2006 14:19:44 +0200 Documentation/DocBook/kernel-api.tmpl | 3 ++ kernel/workqueue.c | 66 +++++++++++++++++++++++++++++++-- 2 files changed, 65 insertions(+), 4 deletions(-) Version 2 of patch: fixed two copy&waste errors found by Stefan Richter. Also added comment on CPU to description of schedule_delayed_work_on. diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl index 1ae4dc0..2d0cc38 100644 --- a/Documentation/DocBook/kernel-api.tmpl +++ b/Documentation/DocBook/kernel-api.tmpl @@ -59,6 +59,9 @@ !Iinclude/linux/hrtimer.h !Ekernel/hrtimer.c </sect1> + <sect1><title>Workqueues and Kevents</title> +!Ekernel/workqueue.c + </sect1> <sect1><title>Internal Functions</title> !Ikernel/exit.c !Ikernel/signal.c diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 7fada82..f7777b8 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -93,9 +93,13 @@ static void __queue_work(struct cpu_work spin_unlock_irqrestore(&cwq->lock, flags); } -/* - * Queue work on a workqueue. Return non-zero if it was successfully - * added. +/** + * queue_work - queue work on a workqueue + * + * @wq: workqueue to use + * @work: work to queue + * + * Returns non-zero if it was successfully added. * * We queue the work to the CPU it was submitted, but there is no * guarantee that it will be processed by that CPU. @@ -128,6 +132,15 @@ static void delayed_work_timer_fn(unsign __queue_work(per_cpu_ptr(wq->cpu_wq, cpu), work); } +/** + * queue_delayed_work - queue work on a workqueue after delay + * + * @wq: workqueue to use + * @work: work to queue + * @delay: number of jiffies to wait before queueing + * + * Returns non-zero if it was successfully added. + */ int fastcall queue_delayed_work(struct workqueue_struct *wq, struct work_struct *work, unsigned long delay) { @@ -150,6 +163,16 @@ int fastcall queue_delayed_work(struct w } EXPORT_SYMBOL_GPL(queue_delayed_work); +/** + * queue_delayed_work_on - queue work on specific CPU after delay + * + * @cpu: CPU number to execute work on + * @wq: workqueue to use + * @work: work to queue + * @delay: number of jiffies to wait before queueing + * + * Returns non-zero if it was successfully added. + */ int queue_delayed_work_on(int cpu, struct workqueue_struct *wq, struct work_struct *work, unsigned long delay) { @@ -275,9 +298,11 @@ static void flush_cpu_workqueue(struct c } } -/* +/** * flush_workqueue - ensure that any scheduled work has run to completion. * + * @wq: workqueue to flush + * * Forces execution of the workqueue and blocks until its completion. * This is typically used in driver shutdown handlers. * @@ -400,6 +425,13 @@ static void cleanup_workqueue_thread(str kthread_stop(p); } +/** + * destroy_workqueue - safely terminate a workqueue + * + * @wq: target workqueue + * + * Safely destroy a workqueue. All work currently pending will be done first. + */ void destroy_workqueue(struct workqueue_struct *wq) { int cpu; @@ -425,18 +457,44 @@ EXPORT_SYMBOL_GPL(destroy_workqueue); static struct workqueue_struct *keventd_wq; +/** + * schedule_work - put work task in global workqueue + * + * @work: job to be done + * + * This puts a job in the kernel-global workqueue. + */ int fastcall schedule_work(struct work_struct *work) { return queue_work(keventd_wq, work); } EXPORT_SYMBOL(schedule_work); +/** + * schedule_delayed_work - put work task in global workqueue after delay + * + * @work: job to be done + * @delay: number of jiffies to wait + * + * After waiting for a given time this puts a job in the kernel-global + * workqueue. + */ int fastcall schedule_delayed_work(struct work_struct *work, unsigned long delay) { return queue_delayed_work(keventd_wq, work, delay); } EXPORT_SYMBOL(schedule_delayed_work); +/** + * schedule_delayed_work_on - queue work in global workqueue on CPU after delay + * + * @cpu: cpu to use + * @work: job to be done + * @delay: number of jiffies to wait + * + * After waiting for a given time this puts a job in the kernel-global + * workqueue on the specified CPU. + */ int schedule_delayed_work_on(int cpu, struct work_struct *work, unsigned long delay) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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