user/sven/linux.git/kernel/sched/ext_internal.h, branch v6.18.8

sched_ext: Add SCX_EFLAG_INITIALIZED to indicate successful ops.init()

2025-09-23T19:03:26Z

ops.exit() may be called even if the loading failed before ops.init() finishes successfully. This is because ops.exit() allows rich exit info communication. Add SCX_EFLAG_INITIALIZED flag to scx_exit_info.flags to indicate whether ops.init() finished successfully. This enables BPF schedulers to distinguish between exit scenarios and handle cleanup appropriately based on initialization state. Acked-by: Andrea Righi Signed-off-by: Tejun Heo

sched_ext: Use bitfields for boolean warning flags

2025-09-23T19:03:26Z

Convert warned_zero_slice and warned_deprecated_rq in scx_sched struct to single-bit bitfields. While this doesn't reduce struct size immediately, it prepares for future bitfield additions. v2: Update patch description. Acked-by: Andrea Righi Signed-off-by: Tejun Heo

sched_ext: deprecation warn for scx_bpf_cpu_rq()

2025-09-03T21:51:57Z

scx_bpf_cpu_rq() works on an unlocked rq which generally isn't safe. For the common use-cases scx_bpf_locked_rq() and scx_bpf_cpu_curr() work, so add a deprecation warning to scx_bpf_cpu_rq() so it can eventually be removed. Signed-off-by: Christian Loehle Signed-off-by: Tejun Heo

sched_ext: Put event_stats_cpu in struct scx_sched_pcpu

2025-09-03T21:33:28Z

scx_sched.event_stats_cpu is the percpu counters that are used to track stats. Introduce struct scx_sched_pcpu and move the counters inside. This will ease adding more per-cpu fields. No functional changes. Signed-off-by: Tejun Heo Acked-by: Andrea Righi

sched_ext: Move internal type and accessor definitions to ext_internal.h

2025-09-03T21:33:28Z

There currently isn't a place to place SCX-internal types and accessors to be shared between ext.c and ext_idle.c. Create kernel/sched/ext_internal.h and move internal type and accessor definitions there. This trims ext.c a bit and makes future additions easier. Pure code reorganization. No functional changes. Signed-off-by: Tejun Heo Acked-by: Andrea Righi