Re: [PATCH] generic-ipi: fix deadlock in __smp_call_function_single

From: Ingo Molnar
Date: Sun Sep 26 2010 - 04:43:10 EST



* Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> Maybe. Or maybe it papers over a scheduler bug by gratuitously adding
> additional code which no present callsites actually need.

Hm, indeed.

We now have the scheduler bug fixed upstream. Do we really need this
patch?

> The patch didn't update the __smp_call_function_single() kerneldoc.
> Compare it with smp_call_function_single() and note the subtle
> difference between "a specific CPU" and the now incorrect "on another
> CPU".

In any case this feedback didnt get addressed AFAICS.

Ingo
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