diff options
Diffstat (limited to 'kernel/sched/ext_internal.h')
| -rw-r--r-- | kernel/sched/ext_internal.h | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/kernel/sched/ext_internal.h b/kernel/sched/ext_internal.h index b3617abed510..386c677e4c9a 100644 --- a/kernel/sched/ext_internal.h +++ b/kernel/sched/ext_internal.h @@ -23,6 +23,11 @@ enum scx_consts { * scx_tasks_lock to avoid causing e.g. CSD and RCU stalls. */ SCX_TASK_ITER_BATCH = 32, + + SCX_BYPASS_LB_DFL_INTV_US = 500 * USEC_PER_MSEC, + SCX_BYPASS_LB_DONOR_PCT = 125, + SCX_BYPASS_LB_MIN_DELTA_DIV = 4, + SCX_BYPASS_LB_BATCH = 256, }; enum scx_exit_kind { @@ -697,12 +702,23 @@ struct sched_ext_ops { * 2_500_000. @cgrp is entitled to 2.5 CPUs. @burst_us can be * interpreted in the same fashion and specifies how much @cgrp can * burst temporarily. The specific control mechanism and thus the - * interpretation of @period_us and burstiness is upto to the BPF + * interpretation of @period_us and burstiness is up to the BPF * scheduler. */ void (*cgroup_set_bandwidth)(struct cgroup *cgrp, u64 period_us, u64 quota_us, u64 burst_us); + /** + * @cgroup_set_idle: A cgroup's idle state is being changed + * @cgrp: cgroup whose idle state is being updated + * @idle: whether the cgroup is entering or exiting idle state + * + * Update @cgrp's idle state to @idle. This callback is invoked when + * a cgroup transitions between idle and non-idle states, allowing the + * BPF scheduler to adjust its behavior accordingly. + */ + void (*cgroup_set_idle)(struct cgroup *cgrp, bool idle); + #endif /* CONFIG_EXT_GROUP_SCHED */ /* @@ -884,6 +900,10 @@ struct scx_sched { struct scx_dispatch_q **global_dsqs; struct scx_sched_pcpu __percpu *pcpu; + /* + * Updates to the following warned bitfields can race causing RMW issues + * but it doesn't really matter. + */ bool warned_zero_slice:1; bool warned_deprecated_rq:1; @@ -948,6 +968,7 @@ enum scx_enq_flags { SCX_ENQ_CLEAR_OPSS = 1LLU << 56, SCX_ENQ_DSQ_PRIQ = 1LLU << 57, + SCX_ENQ_NESTED = 1LLU << 58, }; enum scx_deq_flags { @@ -986,8 +1007,10 @@ enum scx_kick_flags { SCX_KICK_PREEMPT = 1LLU << 1, /* - * Wait for the CPU to be rescheduled. The scx_bpf_kick_cpu() call will - * return after the target CPU finishes picking the next task. + * The scx_bpf_kick_cpu() call will return after the current SCX task of + * the target CPU switches out. This can be used to implement e.g. core + * scheduling. This has no effect if the current task on the target CPU + * is not on SCX. */ SCX_KICK_WAIT = 1LLU << 2, }; |