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| author | Shrikanth Hegde <sshegde@linux.ibm.com> | 2026-09-28 11:07:19 +0530 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-09-28 08:44:41 +0200 |
| commit | 518b32bd5bb373aa334e4b73d359689071d50b5c (patch) | |
| tree | 6193da8ab7550b37c954e1fd5a8d91b6edd63f31 /include/linux/workqueue_api.h | |
| parent | 06a49ef784acf91cee78d50c5307d400f86ccafb (diff) | |
cpumask: Introduce cpu_preferred_mask
Provide the preferred CPU infrastructure. Define get/set macros
which could be used to get/set CPU state as preferred.
CONFIG_PREFERRED_CPU will be selected by the driver which handles
steal time values. It is going to set/clear preferred CPU state.
This driver will be called steal_governor and it is introduced in
subsequent patches. It periodically computes the steal ratio and
decides on preferred CPU state.
A CPU is set to preferred when it becomes active. Later it may be
marked as non-preferred depending on steal ratio by the steal_governor.
Always maintain design construct of preferred is subset of active.
i.e. preferred ⊆ active ⊆ online ⊆ present ⊆ possible
With CONFIG_PREFERRED_CPU=n, ensure set_cpu_preferred is a nop and get
method returns the active state in that case.
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260928053728.797539-5-sshegde@linux.ibm.com
Diffstat (limited to 'include/linux/workqueue_api.h')
0 files changed, 0 insertions, 0 deletions