Re: [tip:timers/core] timekeeping: Increase granularity ofread_persistent_clock()

[Paul Mackerras]

Ingo Molnar writes:

> Do you ask Linus to rebase the upstream kernel as well, if the 
> powerpc or x86 build happens to break? There's more than a dozen 
> such cases per development cycle triggering on my tests alone. If 
> not, why not?

I see you pulling commits out of the tip tree quite often, when they
have testing failures of various kinds.  I presume that, like other
maintainers, you have some branches that you try hard not to rebase
and other testing branches that are quite volatile and get
reconstructed frequently (though I don't know what branch names you
use for them).

I presumed that you wouldn't have put a commit that hadn't even passed
basic build testing into one of your non-rebasing branches.  That's
why I assumed you could fold the fix into the original patch without
difficulty.

> The thing is, we'll probably redo this portion of the timer tree as 
> i found other problems in testing, but generally the disadvantages 
> of a build breakage with a very small non-bisectability window has 
> to be weighed against the disadvantages of a rebase (which are 
> significant).
> 
> The equation does not automatically flip in favor of a rebase as you 
> seem to suggest - in fact it generally goes _against_ a rebase.

In a stable, non-rebasing branch, sure.  But putting untested patches
into such a branch would be a bit silly, so I assumed you hadn't done
that. :)

Paul.
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