This series centralizes the lcore ID verification in the power cpufreq
framework, replacing the per-driver range checks with a common validation.
Background
----------
Currently, various cpufreq drivers implement their own lcore ID checks,
which are limited to simple range validation against RTE_MAX_LCORE and
involve significant code duplication across 12+ functions per driver.
The checks are duplicated across all drivers ??? any change requires
updating 5+ drivers identically. Moreover, these checks do not verify
whether the lcore is actually managed by the application. So it is better
to verify lcore ID in cpufreq core.
For cpufreq-related APIs, although service cores do not typically invoke
these APIs, they may operate in polling modes where power management is
required. To maintain compatibility with applications using service cores,
the validation logic now explicitly accepts both ROLE_RTE and ROLE_SERVICE.
The usage of power QoS APIs are similar to that of cpufreq. They also can
accepts ROLE_RTE and ROLE_SERVICE.
For PMD power management APIs, the lcore must be ROLE_RTE because these
are used together with the data plane of ethdev PMD. Hence,
rte_lcore_is_enabled() is used for validation.
Key Changes:
------------
Patch 1: Adds a common macro (RTE_POWER_VALID_LCOREID_OR_ERR_RET)
that accepts both roles.
Patch 2: Adds the validation to the cpufreq framework layer.
Patches 3-7: Remove the now-redundant per-driver RTE_MAX_LCORE checks.
Patch 8: Update power QoS to use the new validation, allowing
service cores to configure QoS parameters.
Patch 9: Add lcore validation to PMD management functions.
Changes:
--------
v4: remove the patch that add the helper function rte_lcore_is_eal_managed.
v3:
- update release note.
- add __rte_experimental for new helper function.
- restructure this patch set to facilitate review.
v2:
- allow the service cores to set power API.
----
Huisong Li (9):
power: add a common macro to verify lcore ID
power/cpufreq: add the lcore ID verification to framework
power/acpi: remove redundant lcore ID checks
power/amd_pstate: remove redundant lcore ID checks
power/cppc: remove redundant lcore ID checks
power/intel_pstate: remove redundant lcore ID checks
power/kvm_vm: remove redundant lcore ID checks
power: allow the service core to config power QoS
power: add lcore ID check for PMD mgmt
doc/guides/rel_notes/release_26_07.rst | 7 ++
drivers/power/acpi/acpi_cpufreq.c | 65 -------------------
drivers/power/amd_pstate/amd_pstate_cpufreq.c | 65 -------------------
drivers/power/cppc/cppc_cpufreq.c | 65 -------------------
.../power/intel_pstate/intel_pstate_cpufreq.c | 65 -------------------
drivers/power/kvm_vm/guest_channel.c | 22 -------
drivers/power/kvm_vm/kvm_vm.c | 10 ---
lib/power/power_common.h | 8 +++
lib/power/rte_power_cpufreq.c | 13 ++++
lib/power/rte_power_pmd_mgmt.c | 21 +++---
lib/power/rte_power_qos.c | 10 +--
11 files changed, 41 insertions(+), 310 deletions(-)
--
2.33.0
