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Message-ID: <1465107370.4263.7.camel@gmail.com>
Date: Sun, 05 Jun 2016 08:16:10 +0200
From: Mike Galbraith <umgwanakikbuti@...il.com>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Thomas Gleixner <tglx@...utronix.de>
Cc: LKML <linux-kernel@...r.kernel.org>,
linux-rt-users <linux-rt-users@...r.kernel.org>,
Steven Rostedt <rostedt@...dmis.org>
Subject: [patch rfc] work-simple: Rename work-simple.[ch] to swork.[ch] for
consistency
The internal bits are already swork_blah, rename source to match.
Signed-off-by: Mike Galbraith <umgwanakikbuti@...il.com>
---
arch/x86/kernel/cpu/mcheck/mce.c | 2
drivers/thermal/x86_pkg_temp_thermal.c | 2
fs/aio.c | 2
include/linux/cgroup-defs.h | 2
include/linux/swork.h | 24 ++++
include/linux/work-simple.h | 24 ----
kernel/sched/Makefile | 2
kernel/sched/swork.c | 173 +++++++++++++++++++++++++++++++++
kernel/sched/work-simple.c | 173 ---------------------------------
9 files changed, 202 insertions(+), 202 deletions(-)
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -42,7 +42,7 @@
#include <linux/irq_work.h>
#include <linux/export.h>
#include <linux/jiffies.h>
-#include <linux/work-simple.h>
+#include <linux/swork.h>
#include <asm/processor.h>
#include <asm/traps.h>
--- a/drivers/thermal/x86_pkg_temp_thermal.c
+++ b/drivers/thermal/x86_pkg_temp_thermal.c
@@ -29,7 +29,7 @@
#include <linux/pm.h>
#include <linux/thermal.h>
#include <linux/debugfs.h>
-#include <linux/work-simple.h>
+#include <linux/swork.h>
#include <asm/cpu_device_id.h>
#include <asm/mce.h>
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -40,7 +40,7 @@
#include <linux/ramfs.h>
#include <linux/percpu-refcount.h>
#include <linux/mount.h>
-#include <linux/work-simple.h>
+#include <linux/swork.h>
#include <asm/kmap_types.h>
#include <asm/uaccess.h>
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -16,7 +16,7 @@
#include <linux/percpu-refcount.h>
#include <linux/percpu-rwsem.h>
#include <linux/workqueue.h>
-#include <linux/work-simple.h>
+#include <linux/swork.h>
#ifdef CONFIG_CGROUPS
--- /dev/null
+++ b/include/linux/swork.h
@@ -0,0 +1,24 @@
+#ifndef _LINUX_SWORK_H
+#define _LINUX_SWORK_H
+
+#include <linux/list.h>
+
+struct swork_event {
+ struct list_head item;
+ unsigned long flags;
+ void (*func)(struct swork_event *);
+};
+
+static inline void INIT_SWORK(struct swork_event *event,
+ void (*func)(struct swork_event *))
+{
+ event->flags = 0;
+ event->func = func;
+}
+
+bool swork_queue(struct swork_event *sev);
+
+int swork_get(void);
+void swork_put(void);
+
+#endif /* _LINUX_SWORK_H */
--- a/include/linux/work-simple.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef _LINUX_SWORK_H
-#define _LINUX_SWORK_H
-
-#include <linux/list.h>
-
-struct swork_event {
- struct list_head item;
- unsigned long flags;
- void (*func)(struct swork_event *);
-};
-
-static inline void INIT_SWORK(struct swork_event *event,
- void (*func)(struct swork_event *))
-{
- event->flags = 0;
- event->func = func;
-}
-
-bool swork_queue(struct swork_event *sev);
-
-int swork_get(void);
-void swork_put(void);
-
-#endif /* _LINUX_SWORK_H */
--- a/kernel/sched/Makefile
+++ b/kernel/sched/Makefile
@@ -17,7 +17,7 @@ endif
obj-y += core.o loadavg.o clock.o cputime.o
obj-y += idle_task.o fair.o rt.o deadline.o stop_task.o
-obj-y += wait.o swait.o work-simple.o completion.o idle.o
+obj-y += wait.o swait.o swork.o completion.o idle.o
obj-$(CONFIG_SMP) += cpupri.o cpudeadline.o
obj-$(CONFIG_SCHED_AUTOGROUP) += auto_group.o
obj-$(CONFIG_SCHEDSTATS) += stats.o
--- /dev/null
+++ b/kernel/sched/swork.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2014 BMW Car IT GmbH, Daniel Wagner daniel.wagner@...-carit.de
+ *
+ * Provides a framework for enqueuing callbacks from irq context
+ * PREEMPT_RT_FULL safe. The callbacks are executed in kthread context.
+ */
+
+#include <linux/swait.h>
+#include <linux/swork.h>
+#include <linux/kthread.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/export.h>
+
+#define SWORK_EVENT_PENDING (1 << 0)
+
+static DEFINE_MUTEX(worker_mutex);
+static struct sworker *glob_worker;
+
+struct sworker {
+ struct list_head events;
+ struct swait_queue_head wq;
+
+ raw_spinlock_t lock;
+
+ struct task_struct *task;
+ int refs;
+};
+
+static bool swork_readable(struct sworker *worker)
+{
+ bool r;
+
+ if (kthread_should_stop())
+ return true;
+
+ raw_spin_lock_irq(&worker->lock);
+ r = !list_empty(&worker->events);
+ raw_spin_unlock_irq(&worker->lock);
+
+ return r;
+}
+
+static int swork_kthread(void *arg)
+{
+ struct sworker *worker = arg;
+
+ for (;;) {
+ swait_event_interruptible(worker->wq,
+ swork_readable(worker));
+ if (kthread_should_stop())
+ break;
+
+ raw_spin_lock_irq(&worker->lock);
+ while (!list_empty(&worker->events)) {
+ struct swork_event *sev;
+
+ sev = list_first_entry(&worker->events,
+ struct swork_event, item);
+ list_del(&sev->item);
+ raw_spin_unlock_irq(&worker->lock);
+
+ WARN_ON_ONCE(!test_and_clear_bit(SWORK_EVENT_PENDING,
+ &sev->flags));
+ sev->func(sev);
+ raw_spin_lock_irq(&worker->lock);
+ }
+ raw_spin_unlock_irq(&worker->lock);
+ }
+ return 0;
+}
+
+static struct sworker *swork_create(void)
+{
+ struct sworker *worker;
+
+ worker = kzalloc(sizeof(*worker), GFP_KERNEL);
+ if (!worker)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_LIST_HEAD(&worker->events);
+ raw_spin_lock_init(&worker->lock);
+ init_swait_queue_head(&worker->wq);
+
+ worker->task = kthread_run(swork_kthread, worker, "kswork");
+ if (IS_ERR(worker->task)) {
+ kfree(worker);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return worker;
+}
+
+static void swork_destroy(struct sworker *worker)
+{
+ kthread_stop(worker->task);
+
+ WARN_ON(!list_empty(&worker->events));
+ kfree(worker);
+}
+
+/**
+ * swork_queue - queue swork
+ *
+ * Returns %false if @work was already on a queue, %true otherwise.
+ *
+ * The work is queued and processed on a random CPU
+ */
+bool swork_queue(struct swork_event *sev)
+{
+ unsigned long flags;
+
+ if (test_and_set_bit(SWORK_EVENT_PENDING, &sev->flags))
+ return false;
+
+ raw_spin_lock_irqsave(&glob_worker->lock, flags);
+ list_add_tail(&sev->item, &glob_worker->events);
+ raw_spin_unlock_irqrestore(&glob_worker->lock, flags);
+
+ swake_up(&glob_worker->wq);
+ return true;
+}
+EXPORT_SYMBOL_GPL(swork_queue);
+
+/**
+ * swork_get - get an instance of the sworker
+ *
+ * Returns an negative error code if the initialization if the worker did not
+ * work, %0 otherwise.
+ *
+ */
+int swork_get(void)
+{
+ struct sworker *worker;
+
+ mutex_lock(&worker_mutex);
+ if (!glob_worker) {
+ worker = swork_create();
+ if (IS_ERR(worker)) {
+ mutex_unlock(&worker_mutex);
+ return -ENOMEM;
+ }
+
+ glob_worker = worker;
+ }
+
+ glob_worker->refs++;
+ mutex_unlock(&worker_mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(swork_get);
+
+/**
+ * swork_put - puts an instance of the sworker
+ *
+ * Will destroy the sworker thread. This function must not be called until all
+ * queued events have been completed.
+ */
+void swork_put(void)
+{
+ mutex_lock(&worker_mutex);
+
+ glob_worker->refs--;
+ if (glob_worker->refs > 0)
+ goto out;
+
+ swork_destroy(glob_worker);
+ glob_worker = NULL;
+out:
+ mutex_unlock(&worker_mutex);
+}
+EXPORT_SYMBOL_GPL(swork_put);
--- a/kernel/sched/work-simple.c
+++ /dev/null
@@ -1,173 +0,0 @@
-/*
- * Copyright (C) 2014 BMW Car IT GmbH, Daniel Wagner daniel.wagner@...-carit.de
- *
- * Provides a framework for enqueuing callbacks from irq context
- * PREEMPT_RT_FULL safe. The callbacks are executed in kthread context.
- */
-
-#include <linux/swait.h>
-#include <linux/work-simple.h>
-#include <linux/kthread.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/export.h>
-
-#define SWORK_EVENT_PENDING (1 << 0)
-
-static DEFINE_MUTEX(worker_mutex);
-static struct sworker *glob_worker;
-
-struct sworker {
- struct list_head events;
- struct swait_queue_head wq;
-
- raw_spinlock_t lock;
-
- struct task_struct *task;
- int refs;
-};
-
-static bool swork_readable(struct sworker *worker)
-{
- bool r;
-
- if (kthread_should_stop())
- return true;
-
- raw_spin_lock_irq(&worker->lock);
- r = !list_empty(&worker->events);
- raw_spin_unlock_irq(&worker->lock);
-
- return r;
-}
-
-static int swork_kthread(void *arg)
-{
- struct sworker *worker = arg;
-
- for (;;) {
- swait_event_interruptible(worker->wq,
- swork_readable(worker));
- if (kthread_should_stop())
- break;
-
- raw_spin_lock_irq(&worker->lock);
- while (!list_empty(&worker->events)) {
- struct swork_event *sev;
-
- sev = list_first_entry(&worker->events,
- struct swork_event, item);
- list_del(&sev->item);
- raw_spin_unlock_irq(&worker->lock);
-
- WARN_ON_ONCE(!test_and_clear_bit(SWORK_EVENT_PENDING,
- &sev->flags));
- sev->func(sev);
- raw_spin_lock_irq(&worker->lock);
- }
- raw_spin_unlock_irq(&worker->lock);
- }
- return 0;
-}
-
-static struct sworker *swork_create(void)
-{
- struct sworker *worker;
-
- worker = kzalloc(sizeof(*worker), GFP_KERNEL);
- if (!worker)
- return ERR_PTR(-ENOMEM);
-
- INIT_LIST_HEAD(&worker->events);
- raw_spin_lock_init(&worker->lock);
- init_swait_queue_head(&worker->wq);
-
- worker->task = kthread_run(swork_kthread, worker, "kswork");
- if (IS_ERR(worker->task)) {
- kfree(worker);
- return ERR_PTR(-ENOMEM);
- }
-
- return worker;
-}
-
-static void swork_destroy(struct sworker *worker)
-{
- kthread_stop(worker->task);
-
- WARN_ON(!list_empty(&worker->events));
- kfree(worker);
-}
-
-/**
- * swork_queue - queue swork
- *
- * Returns %false if @work was already on a queue, %true otherwise.
- *
- * The work is queued and processed on a random CPU
- */
-bool swork_queue(struct swork_event *sev)
-{
- unsigned long flags;
-
- if (test_and_set_bit(SWORK_EVENT_PENDING, &sev->flags))
- return false;
-
- raw_spin_lock_irqsave(&glob_worker->lock, flags);
- list_add_tail(&sev->item, &glob_worker->events);
- raw_spin_unlock_irqrestore(&glob_worker->lock, flags);
-
- swake_up(&glob_worker->wq);
- return true;
-}
-EXPORT_SYMBOL_GPL(swork_queue);
-
-/**
- * swork_get - get an instance of the sworker
- *
- * Returns an negative error code if the initialization if the worker did not
- * work, %0 otherwise.
- *
- */
-int swork_get(void)
-{
- struct sworker *worker;
-
- mutex_lock(&worker_mutex);
- if (!glob_worker) {
- worker = swork_create();
- if (IS_ERR(worker)) {
- mutex_unlock(&worker_mutex);
- return -ENOMEM;
- }
-
- glob_worker = worker;
- }
-
- glob_worker->refs++;
- mutex_unlock(&worker_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(swork_get);
-
-/**
- * swork_put - puts an instance of the sworker
- *
- * Will destroy the sworker thread. This function must not be called until all
- * queued events have been completed.
- */
-void swork_put(void)
-{
- mutex_lock(&worker_mutex);
-
- glob_worker->refs--;
- if (glob_worker->refs > 0)
- goto out;
-
- swork_destroy(glob_worker);
- glob_worker = NULL;
-out:
- mutex_unlock(&worker_mutex);
-}
-EXPORT_SYMBOL_GPL(swork_put);
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