Create an unbound high priority workqueue for recovery tasks.
Recovery time is an important parameter for a subsystem and there
might be situations where multiple subsystems crash around the same
time. Scheduling into an unbound workqueue increases parallelization
and avoids time impact. Also creating a high priority workqueue
will utilize separate worker threads with higher nice values than
normal ones.
Signed-off-by: Rishabh Bhatnagar <rishabhb@xxxxxxxxxxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 46c2937..8fd8166 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -48,6 +48,8 @@ static DEFINE_MUTEX(rproc_list_mutex);
static LIST_HEAD(rproc_list);
static struct notifier_block rproc_panic_nb;
+static struct workqueue_struct *rproc_wq;
+
typedef int (*rproc_handle_resource_t)(struct rproc *rproc,
void *, int offset, int avail);
@@ -2475,7 +2477,7 @@ void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type)
rproc->name, rproc_crash_to_string(type));
/* create a new task to handle the error */
- schedule_work(&rproc->crash_handler);
+ queue_work(rproc_wq, &rproc->crash_handler);
}
EXPORT_SYMBOL(rproc_report_crash);
@@ -2520,6 +2522,10 @@ static void __exit rproc_exit_panic(void)
static int __init remoteproc_init(void)
{
+ rproc_wq = alloc_workqueue("rproc_wq", WQ_UNBOUND | WQ_HIGHPRI, 0);
+ if (!rproc_wq)
+ return -ENOMEM;
+
rproc_init_sysfs();
rproc_init_debugfs();
rproc_init_cdev();
@@ -2536,6 +2542,7 @@ static void __exit remoteproc_exit(void)
rproc_exit_panic();
rproc_exit_debugfs();
rproc_exit_sysfs();
+ destroy_workqueue(rproc_wq);
}
module_exit(remoteproc_exit);
--
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