Fu Wei wrote:
in the first timeout, just panic() maybe not enough, in [RFC]
version of my patchset, I offer some option as "preaction" to use, but
for simplifying the first version of driver, I have deleted them.
but at least, panic() is far more useful than a simple reset. at
least, it can provide the context of the crashed system to admin.
My point is that there is very little difference between
1) calling panic() on pre-timeout
2) calling panic() on timeout
In both cases, the system will panic. The watchdog API says that the
system should reset when a timeout occurs, so you cannot call panic()
before the timeout expires.
> If you want to warn user space, that will make driver more
> complicated, I don't think that is a good choose for a first version.
> but we can find a way to improve this later
In my opinion, this "first version" is not useful. I would like to see
a pre-timeout feature that does not panic or reset when a pre-timeout
occurs.
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