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devlink: Add support for direct reporter health state update

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It is possible that a reporter state will be updated due to a recover flow
which is not triggered by a devlink health related operation, but as a side
effect of some other operation in the system.

Expose devlink health API for a direct update of a reporter status.

Move devlink_health_reporter_state enum definition to devlink.h so it could
be used from drivers as a parameter of devlink_health_reporter_state_update.

In addition, add trace_devlink_health_reporter_state_update to provide user
notification for reporter state change.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eran Ben Elisha
2019-03-03 10:57:30 +02:00
committed by David S. Miller
parent a0a21adb6a
commit 3167b27a7d
3 changed files with 62 additions and 5 deletions
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31
include/trace/events/devlink.h
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@@ -140,6 +140,37 @@ TRACE_EVENT(devlink_health_recover_aborted,
__entry->time_since_last_recover)
);
/*
* Tracepoint for devlink health reporter state update:
*/
TRACE_EVENT(devlink_health_reporter_state_update,
TP_PROTO(const struct devlink *devlink, const char *reporter_name,
bool new_state),
TP_ARGS(devlink, reporter_name, new_state),
TP_STRUCT__entry(
__string(bus_name, devlink->dev->bus->name)
__string(dev_name, dev_name(devlink->dev))
__string(driver_name, devlink->dev->driver->name)
__string(reporter_name, reporter_name)
__field(u8, new_state)
),
TP_fast_assign(
__assign_str(bus_name, devlink->dev->bus->name);
__assign_str(dev_name, dev_name(devlink->dev));
__assign_str(driver_name, devlink->dev->driver->name);
__assign_str(reporter_name, reporter_name);
__entry->new_state = new_state;
),
TP_printk("bus_name=%s dev_name=%s driver_name=%s reporter_name=%s: new_state=%d",
__get_str(bus_name), __get_str(dev_name),
__get_str(driver_name), __get_str(reporter_name),
__entry->new_state)
);
#endif /* _TRACE_DEVLINK_H */
/* This part must be outside protection */