On 13/06/2023 20:53:56, Thomas Gleixner wrote:
> On Tue, Jun 13 2023 at 19:16, Laurent Dufour wrote:
>> On 10/06/2023 23:26:18, Thomas Gleixner wrote:
>>> On Thu, May 25 2023 at 01:56, Michael Ellerman wrote:
#ifdef CONFIG_HOTPLUG_SMT
enum cpuhp_smt_control cpu_smt_control __read_mostly
On Tue, Jun 13 2023 at 19:16, Laurent Dufour wrote:
> On 10/06/2023 23:26:18, Thomas Gleixner wrote:
>> On Thu, May 25 2023 at 01:56, Michael Ellerman wrote:
>>> #ifdef CONFIG_HOTPLUG_SMT
>>> enum cpuhp_smt_control cpu_smt_control __read_mostly = CPU_SMT_ENABLED;
>>> +static unsigned int cpu_smt_
On 10/06/2023 23:26:18, Thomas Gleixner wrote:
> On Thu, May 25 2023 at 01:56, Michael Ellerman wrote:
>> #ifdef CONFIG_HOTPLUG_SMT
>> enum cpuhp_smt_control cpu_smt_control __read_mostly = CPU_SMT_ENABLED;
>> +static unsigned int cpu_smt_max_threads __ro_after_init;
>> +unsigned int cpu_smt_num_
On Sat, Jun 10 2023 at 23:26, Thomas Gleixner wrote:
> On Thu, May 25 2023 at 01:56, Michael Ellerman wrote:
> /*
> * The decision whether SMT is supported can only be done after the full
> * CPU identification. Called from architecture code.
> */
> -void __init cpu_smt_check_topology(void)
On Thu, May 25 2023 at 01:56, Michael Ellerman wrote:
> #ifdef CONFIG_HOTPLUG_SMT
> enum cpuhp_smt_control cpu_smt_control __read_mostly = CPU_SMT_ENABLED;
> +static unsigned int cpu_smt_max_threads __ro_after_init;
> +unsigned int cpu_smt_num_threads;
Why needs this to be global? cpu_smt_contro
A subsequent patch will enable partial SMT states, ie. when not all SMT
threads are brought online.
To support that the SMT code needs to know the maximum number of SMT
threads, and also the currently configured number.
The arch code knows the max number of threads, so have the arch code
pass tha
