> On Mar 1, 2021, at 9:10 AM, Peter Zijlstra wrote:
>
> On Sat, Feb 20, 2021 at 03:17:04PM -0800, Nadav Amit wrote:
>> +/*
>> + * Choose the most efficient way to send an IPI. Note that the
>> + * number of CPUs might be zero due to concurrent changes to the
On Sat, Feb 20, 2021 at 03:17:04PM -0800, Nadav Amit wrote:
> + /*
> + * Choose the most efficient way to send an IPI. Note that the
> + * number of CPUs might be zero due to concurrent changes to the
> + * provided mask.
> + */
> +
From: Nadav Amit
Currently, on_each_cpu() and similar functions do not exploit the
potential of concurrency: the function is first executed remotely and
only then it is executed locally. Functions such as TLB flush can take
considerable time, so this provides an opportunity for performance
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