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SubjectRe: [PATCH 1/3] powernv:idle: Use correct IDLE_THREAD_BITS in POWER8/9
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Michael Neuling <mikey@neuling.org> writes:

> On Wed, 2017-04-12 at 17:16 +0530, Gautham R. Shenoy wrote:
>> From: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
>>
>> This patch ensures that POWER8 and POWER9 processors use the correct
>> value of IDLE_THREAD_BITS as POWER8 has 8 threads per core and hence
>> the IDLE_THREAD_BITS should be 0xFF while POWER9 has only 4 threads
>> per core and hence the IDLE_THREAD_BITS should be 0xF.
>
> Why don't we derive this from the device tree rather than hard wiring it per cpu
> type?

Right.

In fact we already have threads_per_core which is exactly that.

cheers

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