PM: EM: Implement em_nl_get_pd_table_doit()

Browse source

When a userspace requests EM_CMD_GET_PD_TABLE with an ID of a performance
domain, the kernel reports back the energy model table of the specified
performance domain. The message format of the response is as follows:

EM_A_PD_TABLE_PD_ID (NLA_U32)
EM_A_PD_TABLE_PS (NLA_NESTED)*
    EM_A_PS_PERFORMANCE (NLA_U64)
    EM_A_PS_FREQUENCY (NLA_U64)
    EM_A_PS_POWER (NLA_U64)
    EM_A_PS_COST (NLA_U64)
    EM_A_PS_FLAGS (NLA_U64)

where EM_A_PD_TABLE_PS can be repeated as many times as there are
performance states (struct em_perf_state).

Signed-off-by: Changwoo Min <changwoo@igalia.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://patch.msgid.link/20251020220914.320832-8-changwoo@igalia.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

...

This commit is contained in:

Changwoo Min 2025-10-21 07:09:11 +09:00 • committed by Rafael J. Wysocki

parent d8eef04531

commit f2d2946eaa

1 changed files with 107 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

108

kernel/power/em_netlink.c

View file