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Message-Id: <200607201422.32798.eike-kernel@sf-tec.de>
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)
{
-
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