On 12 Sep 2002, Robert Love wrote:
> > it *is* a great debugging check, at zero added cost. Scheduling from an
> > atomic region *is* a critical bug that can and will cause problems in 99%
> > of the cases. Rather fix the asserts that got triggered instead of backing
> > out useful debugging checks ...
>
> There are a lot of shitty drivers that this is going to catch. [...]
of course. And your point in making it in_interrupt() had what purpose -
hiding that tons of code breaks preemption? [and tons of code breaks on
SMP.] Your patch was removing precisely the tool that can be used to
improve SMP quality on UP boxes as well.
> [...] Yes, that is great... but we cannot BUG(). There really are a LOT
> of them. In the least, we need to show_trace().
yes. And we also need kallsyms and kksymoops in the kernel, so that people
can send in meaningful traces.
Ingo
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This archive was generated by hypermail 2b29 : Sun Sep 15 2002 - 22:00:32 EST