[PATCH 0/2] Save cpuhp dynamic state
Pierre Gondois
pierre.gondois at arm.com
Thu Oct 6 00:54:13 PDT 2022
Hello,
Just a ping in case this was forgotten,
Regards,
Pierre
On 9/14/22 18:28, Pierre Gondois wrote:
> Requesting a CPUHP_AP_ONLINE_DYN cpuhp state reserves a state
> among the range [CPUHP_AP_ONLINE_DYN:CPUHP_AP_ONLINE_DYN_END].
> The reserved state must be saved in order to remove it later.
>
> Cf. __cpuhp_setup_state_cpuslocked() documentation:
> Return:
> On success:
> Positive state number if @state is CPUHP_AP_ONLINE_DYN;
> 0 for all other states
>
> Indeed, the following:
> cpuhp_remove_state(CPUHP_AP_ONLINE_DYN);
> removes the first dynamic states added to the cpuhp state machine.
>
> Patches were tested as:
> - powercap/drivers/dtpm: on a Juno-r2, using a late_initcall()
> to init and exit the dtpm framework.
> - driver: soc: xilinx: the patch was only compile tested
> due to missing hardware.
>
> Pierre Gondois (2):
> driver: soc: xilinx: Save cpuhp dynamic state
> powercap/drivers/dtpm: Save cpuhp dynamic state
>
> drivers/powercap/dtpm_cpu.c | 7 ++++++-
> drivers/soc/xilinx/xlnx_event_manager.c | 12 ++++++++++--
> 2 files changed, 16 insertions(+), 3 deletions(-)
>
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