Messages in this thread | | | Subject | Re: [PATCH 4/7] SMP: Implement on_one_cpu() | From | Roland Dreier <> | Date | Thu, 24 May 2007 06:43:32 -0700 |
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I don't see any documented restrictions about preemption being disabled when this function is called, but...
> +int on_one_cpu(int cpu, void (*func) (void *info), void *info, > + int retry, int wait) > +{ > + int ret; > + int this_cpu; > + > + this_cpu = get_cpu();
what if a preempt and reschedule to a different CPU happens right here, after this_cpu is set?
> + if (this_cpu == cpu) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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