Messages in this thread | | | Date | Fri, 13 Mar 2009 10:31:09 +0100 | From | Ingo Molnar <> | Subject | Re: [tip:core/ipi] generic-ipi: eliminate spurious pointless WARN_ON()s |
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* Peter Zijlstra <peterz@infradead.org> wrote:
> On Fri, 2009-03-13 at 01:39 +0000, Jan Beulich wrote: > > Commit-ID: 6a09dfa870ba0ed21b1124539968a36b42660661 > > Gitweb: http://git.kernel.org/tip/6a09dfa870ba0ed21b1124539968a36b42660661 > > Author: Jan Beulich <jbeulich@novell.com> > > AuthorDate: Thu, 12 Mar 2009 13:21:50 +0000 > > Commit: Ingo Molnar <mingo@elte.hu> > > CommitDate: Fri, 13 Mar 2009 02:14:41 +0100 > > > > generic-ipi: eliminate spurious pointless WARN_ON()s > > > > Namely during early boot, the panic() or BUG() paths may end up in > > smp_call_function_*() with just a single online CPU. In that situation > > the warnings generated are not only meaningless, but also result in > > relevant output being cluttered. > > > > Therefore, defer the WARN_ON() checks until after the (unaffected from > > the problem that is being attempted to be detected here) cases have > > been handled. > > > > Signed-off-by: Jan Beulich <jbeulich@novell.com> > > LKML-Reference: <49B91A7E.76E4.0078.0@novell.com> > > Signed-off-by: Ingo Molnar <mingo@elte.hu> > > I don't really like this,.. it moves the WARN_ON to weird > locations without an explanatory comment.
ok, i've reverted it for now.
Ingo
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