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authorBorislav Petkov <bp@suse.de>2015-11-30 19:02:01 +0100
committerBorislav Petkov <bp@suse.de>2015-12-11 16:56:43 +0100
commitc4cf3b454ecaa222aad9017932bd3b9c9325d931 (patch)
tree8e132709bdcaa097d84bba838bbd51a395607c3d
parente136fa016f2f06ca6e00d4f99894b4424f3f2a5c (diff)
downloadop-kernel-dev-c4cf3b454ecaa222aad9017932bd3b9c9325d931.zip
op-kernel-dev-c4cf3b454ecaa222aad9017932bd3b9c9325d931.tar.gz
EDAC: Rework workqueue handling
Hide the EDAC workqueue pointer in a separate compilation unit and add accessors for the workqueue manipulations needed. Remove edac_pci_reset_delay_period() which wasn't used by anything. It seems it got added without a user with 91b99041c1d5 ("drivers/edac: updated PCI monitoring") Signed-off-by: Borislav Petkov <bp@suse.de>
-rw-r--r--drivers/edac/Makefile2
-rw-r--r--drivers/edac/edac_device.c28
-rw-r--r--drivers/edac/edac_mc.c19
-rw-r--r--drivers/edac/edac_module.c29
-rw-r--r--drivers/edac/edac_module.h7
-rw-r--r--drivers/edac/edac_pci.c32
-rw-r--r--drivers/edac/wq.c42
7 files changed, 71 insertions, 88 deletions
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index dbf53e0..be163e2 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -10,7 +10,7 @@ obj-$(CONFIG_EDAC) := edac_stub.o
obj-$(CONFIG_EDAC_MM_EDAC) += edac_core.o
edac_core-y := edac_mc.o edac_device.o edac_mc_sysfs.o
-edac_core-y += edac_module.o edac_device_sysfs.o
+edac_core-y += edac_module.o edac_device_sysfs.o wq.o
edac_core-$(CONFIG_EDAC_DEBUG) += debugfs.o
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index 455a64b..a979003 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -390,11 +390,9 @@ static void edac_device_workq_function(struct work_struct *work_req)
* between integral seconds
*/
if (edac_dev->poll_msec == 1000)
- queue_delayed_work(edac_workqueue, &edac_dev->work,
- round_jiffies_relative(edac_dev->delay));
+ edac_queue_work(&edac_dev->work, round_jiffies_relative(edac_dev->delay));
else
- queue_delayed_work(edac_workqueue, &edac_dev->work,
- edac_dev->delay);
+ edac_queue_work(&edac_dev->work, edac_dev->delay);
}
/*
@@ -422,11 +420,9 @@ static void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev,
* to fire together on the 1 second exactly
*/
if (edac_dev->poll_msec == 1000)
- queue_delayed_work(edac_workqueue, &edac_dev->work,
- round_jiffies_relative(edac_dev->delay));
+ edac_queue_work(&edac_dev->work, round_jiffies_relative(edac_dev->delay));
else
- queue_delayed_work(edac_workqueue, &edac_dev->work,
- edac_dev->delay);
+ edac_queue_work(&edac_dev->work, edac_dev->delay);
}
/*
@@ -440,8 +436,7 @@ static void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev)
edac_dev->op_state = OP_OFFLINE;
- cancel_delayed_work_sync(&edac_dev->work);
- flush_workqueue(edac_workqueue);
+ edac_stop_work(&edac_dev->work);
}
/*
@@ -454,16 +449,15 @@ static void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev)
void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev,
unsigned long value)
{
- /* cancel the current workq request, without the mutex lock */
- edac_device_workq_teardown(edac_dev);
+ unsigned long jiffs = msecs_to_jiffies(value);
- /* acquire the mutex before doing the workq setup */
- mutex_lock(&device_ctls_mutex);
+ if (value == 1000)
+ jiffs = round_jiffies_relative(value);
- /* restart the workq request, with new delay value */
- edac_device_workq_setup(edac_dev, value);
+ edac_dev->poll_msec = value;
+ edac_dev->delay = jiffs;
- mutex_unlock(&device_ctls_mutex);
+ edac_mod_work(&edac_dev->work, jiffs);
}
/*
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 1b2c218..8adfc16 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -548,8 +548,7 @@ static void edac_mc_workq_function(struct work_struct *work_req)
mutex_unlock(&mem_ctls_mutex);
/* Reschedule */
- queue_delayed_work(edac_workqueue, &mci->work,
- msecs_to_jiffies(edac_mc_get_poll_msec()));
+ edac_queue_work(&mci->work, msecs_to_jiffies(edac_mc_get_poll_msec()));
}
/*
@@ -561,8 +560,7 @@ static void edac_mc_workq_function(struct work_struct *work_req)
*
* called with the mem_ctls_mutex held
*/
-static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec,
- bool init)
+static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec)
{
edac_dbg(0, "\n");
@@ -570,10 +568,9 @@ static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec,
if (mci->op_state != OP_RUNNING_POLL)
return;
- if (init)
- INIT_DELAYED_WORK(&mci->work, edac_mc_workq_function);
+ INIT_DELAYED_WORK(&mci->work, edac_mc_workq_function);
- mod_delayed_work(edac_workqueue, &mci->work, msecs_to_jiffies(msec));
+ edac_queue_work(&mci->work, msecs_to_jiffies(msec));
}
/*
@@ -588,8 +585,7 @@ static void edac_mc_workq_teardown(struct mem_ctl_info *mci)
{
mci->op_state = OP_OFFLINE;
- cancel_delayed_work_sync(&mci->work);
- flush_workqueue(edac_workqueue);
+ edac_stop_work(&mci->work);
}
/*
@@ -608,9 +604,8 @@ void edac_mc_reset_delay_period(unsigned long value)
list_for_each(item, &mc_devices) {
mci = list_entry(item, struct mem_ctl_info, link);
- edac_mc_workq_setup(mci, value, false);
+ edac_mod_work(&mci->work, value);
}
-
mutex_unlock(&mem_ctls_mutex);
}
@@ -781,7 +776,7 @@ int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci,
/* This instance is NOW RUNNING */
mci->op_state = OP_RUNNING_POLL;
- edac_mc_workq_setup(mci, edac_mc_get_poll_msec(), true);
+ edac_mc_workq_setup(mci, edac_mc_get_poll_msec());
} else {
mci->op_state = OP_RUNNING_INTERRUPT;
}
diff --git a/drivers/edac/edac_module.c b/drivers/edac/edac_module.c
index 2b53680..5f8543b 100644
--- a/drivers/edac/edac_module.c
+++ b/drivers/edac/edac_module.c
@@ -43,9 +43,6 @@ module_param_call(edac_debug_level, edac_set_debug_level, param_get_int,
MODULE_PARM_DESC(edac_debug_level, "EDAC debug level: [0-4], default: 2");
#endif
-/* scope is to module level only */
-struct workqueue_struct *edac_workqueue;
-
/*
* edac_op_state_to_string()
*/
@@ -66,32 +63,6 @@ char *edac_op_state_to_string(int opstate)
}
/*
- * edac_workqueue_setup
- * initialize the edac work queue for polling operations
- */
-static int edac_workqueue_setup(void)
-{
- edac_workqueue = create_singlethread_workqueue("edac-poller");
- if (edac_workqueue == NULL)
- return -ENODEV;
- else
- return 0;
-}
-
-/*
- * edac_workqueue_teardown
- * teardown the edac workqueue
- */
-static void edac_workqueue_teardown(void)
-{
- if (edac_workqueue) {
- flush_workqueue(edac_workqueue);
- destroy_workqueue(edac_workqueue);
- edac_workqueue = NULL;
- }
-}
-
-/*
* sysfs object: /sys/devices/system/edac
* need to export to other files
*/
diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h
index 7388abf..cfaacb9 100644
--- a/drivers/edac/edac_module.h
+++ b/drivers/edac/edac_module.h
@@ -47,7 +47,12 @@ extern int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev);
extern void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev);
/* edac core workqueue: single CPU mode */
-extern struct workqueue_struct *edac_workqueue;
+int edac_workqueue_setup(void);
+void edac_workqueue_teardown(void);
+bool edac_queue_work(struct delayed_work *work, unsigned long delay);
+bool edac_stop_work(struct delayed_work *work);
+bool edac_mod_work(struct delayed_work *work, unsigned long delay);
+
extern void edac_device_reset_delay_period(struct edac_device_ctl_info
*edac_dev, unsigned long value);
extern void edac_mc_reset_delay_period(unsigned long value);
diff --git a/drivers/edac/edac_pci.c b/drivers/edac/edac_pci.c
index d8b0831..9968538 100644
--- a/drivers/edac/edac_pci.c
+++ b/drivers/edac/edac_pci.c
@@ -209,7 +209,7 @@ static void edac_pci_workq_function(struct work_struct *work_req)
delay = msecs_to_jiffies(msec);
/* Reschedule only if we are in POLL mode */
- queue_delayed_work(edac_workqueue, &pci->work, delay);
+ edac_queue_work(&pci->work, delay);
}
mutex_unlock(&edac_pci_ctls_mutex);
@@ -229,8 +229,8 @@ static void edac_pci_workq_setup(struct edac_pci_ctl_info *pci,
edac_dbg(0, "\n");
INIT_DELAYED_WORK(&pci->work, edac_pci_workq_function);
- queue_delayed_work(edac_workqueue, &pci->work,
- msecs_to_jiffies(edac_pci_get_poll_msec()));
+
+ edac_queue_work(&pci->work, msecs_to_jiffies(edac_pci_get_poll_msec()));
}
/*
@@ -243,32 +243,8 @@ static void edac_pci_workq_teardown(struct edac_pci_ctl_info *pci)
pci->op_state = OP_OFFLINE;
- cancel_delayed_work_sync(&pci->work);
- flush_workqueue(edac_workqueue);
-}
-
-/*
- * edac_pci_reset_delay_period
- *
- * called with a new period value for the workq period
- * a) stop current workq timer
- * b) restart workq timer with new value
- */
-void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci,
- unsigned long value)
-{
- edac_dbg(0, "\n");
-
- edac_pci_workq_teardown(pci);
-
- /* need to lock for the setup */
- mutex_lock(&edac_pci_ctls_mutex);
-
- edac_pci_workq_setup(pci, value);
-
- mutex_unlock(&edac_pci_ctls_mutex);
+ edac_stop_work(&pci->work);
}
-EXPORT_SYMBOL_GPL(edac_pci_reset_delay_period);
/*
* edac_pci_alloc_index: Allocate a unique PCI index number
diff --git a/drivers/edac/wq.c b/drivers/edac/wq.c
new file mode 100644
index 0000000..1b8c07e
--- /dev/null
+++ b/drivers/edac/wq.c
@@ -0,0 +1,42 @@
+#include "edac_module.h"
+
+static struct workqueue_struct *wq;
+
+bool edac_queue_work(struct delayed_work *work, unsigned long delay)
+{
+ return queue_delayed_work(wq, work, delay);
+}
+EXPORT_SYMBOL_GPL(edac_queue_work);
+
+bool edac_mod_work(struct delayed_work *work, unsigned long delay)
+{
+ return mod_delayed_work(wq, work, delay);
+}
+EXPORT_SYMBOL_GPL(edac_mod_work);
+
+bool edac_stop_work(struct delayed_work *work)
+{
+ bool ret;
+
+ ret = cancel_delayed_work_sync(work);
+ flush_workqueue(wq);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(edac_stop_work);
+
+int edac_workqueue_setup(void)
+{
+ wq = create_singlethread_workqueue("edac-poller");
+ if (!wq)
+ return -ENODEV;
+ else
+ return 0;
+}
+
+void edac_workqueue_teardown(void)
+{
+ flush_workqueue(wq);
+ destroy_workqueue(wq);
+ wq = NULL;
+}
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