Michael Neuling <mi...@neuling.org> writes: > On Wed, 2017-04-12 at 17:16 +0530, Gautham R. Shenoy wrote: >> From: "Gautham R. Shenoy" <e...@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
