edac: Allow the option of creating a deferrable work for polling
EDAC provides a mechanism to poll for errors using a callback function
and uses a delayed timer to schedule it. Provide an option to create
a deferrable timer if the error checking is not worth waking up
the cpu from idle
Change-Id: Ia25216323eabf7fa4b894897c950414006921f3f
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index 67691a6..1fa7a36 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -227,6 +227,7 @@
int panic_on_ue; /* boolean for panic'ing on an UE */
unsigned poll_msec; /* number of milliseconds to poll interval */
unsigned long delay; /* number of jiffies for poll_msec */
+ bool defer_work; /* Create a deferrable work for polling */
/* Additional top controller level attributes, but specified
* by the low level driver.
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index 60d8e42..814031d 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -412,7 +412,11 @@
edac_dev->poll_msec = msec;
edac_dev->delay = msecs_to_jiffies(msec);
- INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function);
+ if (edac_dev->defer_work)
+ INIT_DEFERRABLE_WORK(&edac_dev->work,
+ edac_device_workq_function);
+ else
+ INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function);
/* optimize here for the 1 second case, which will be normal value, to
* fire ON the 1 second time event. This helps reduce all sorts of