/* SPDX-License-Identifier: GPL-2.0 */
/*
* BPF extensible scheduler class: Documentation/scheduler/sched-ext.rst
*
* Copyright (c) 2025 Meta Platforms, Inc. and affiliates.
* Copyright (c) 2025 Tejun Heo <tj@kernel.org>
*/
#define SCX_OP_IDX(op) (offsetof(struct sched_ext_ops, op) / sizeof(void (*)(void)))
#define SCX_MOFF_IDX(moff) ((moff) / sizeof(void (*)(void)))
enum scx_consts {
SCX_DSP_DFL_MAX_BATCH = 32,
SCX_DSP_MAX_LOOPS = 32,
SCX_WATCHDOG_MAX_TIMEOUT = 30 * HZ,
SCX_EXIT_BT_LEN = 64,
SCX_EXIT_MSG_LEN = 1024,
SCX_EXIT_DUMP_DFL_LEN = 32768,
SCX_CPUPERF_ONE = SCHED_CAPACITY_SCALE,
/*
* Iterating all tasks may take a while. Periodically drop
* scx_tasks_lock to avoid causing e.g. CSD and RCU stalls.
*/
SCX_TASK_ITER_BATCH = 32,
SCX_BYPASS_HOST_NTH = 2,
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,
SCX_REENQ_LOCAL_MAX_REPEAT = 256,
SCX_SUB_MAX_DEPTH = 4,
};
enum scx_exit_kind {
SCX_EXIT_NONE,
SCX_EXIT_DONE,
SCX_EXIT_UNREG = 