[PATCH 3/6] remoteproc: sysmon: Inform current rproc about all active rprocs

Siddharth Gupta
2020-02-20T02:58:02Z

A remoteproc that has just recovered from a crash will not be aware of the
state of other remoteprocs. Send sysmon notifications on behalf of all the
active/online remoteprocs to the one that just booted up.

Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
---
drivers/remoteproc/qcom_sysmon.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/remoteproc/qcom_sysmon.c b/drivers/remoteproc/qcom_sysmon.c
index 851664e..d0d59d5 100644
--- a/drivers/remoteproc/qcom_sysmon.c
+++ b/drivers/remoteproc/qcom_sysmon.c
@@ -457,6 +457,7 @@ static int sysmon_start(struct rproc_subdev *subdev)
{
struct qcom_sysmon *sysmon = container_of(subdev, struct qcom_sysmon,
subdev);
+ struct qcom_sysmon *target;
struct sysmon_event event = {
.subsys_name = sysmon->name,
.ssr_event = SSCTL_SSR_EVENT_AFTER_POWERUP
@@ -464,6 +465,17 @@ static int sysmon_start(struct rproc_subdev *subdev)

blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event);

+ mutex_lock(&sysmon_lock);
+ list_for_each_entry(target, &sysmon_list, node) {
+ if (target == sysmon ||
+ target->rproc->state != RPROC_RUNNING)
+ continue;
+
+ event.subsys_name = target->name;
+ ssctl_send_event(sysmon, &event);
+ }
+ mutex_unlock(&sysmon_lock);
+
return 0;
}

--
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