diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/ext.c | 9 | ||||
| -rw-r--r-- | kernel/sched/ext_internal.h | 1 |
2 files changed, 10 insertions, 0 deletions
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index 4bd9b491b376..4160a4a7af67 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -6351,9 +6351,18 @@ __bpf_kfunc s32 scx_bpf_task_cpu(const struct task_struct *p) */ __bpf_kfunc struct rq *scx_bpf_cpu_rq(s32 cpu) { + struct scx_sched *sch = scx_root; + if (!kf_cpu_valid(cpu, NULL)) return NULL; + if (!sch->warned_deprecated_rq) { + printk_deferred(KERN_WARNING "sched_ext: %s() is deprecated; " + "use scx_bpf_locked_rq() when holding rq lock " + "or scx_bpf_cpu_curr() to read remote curr safely.\n", __func__); + sch->warned_deprecated_rq = true; + } + return cpu_rq(cpu); } diff --git a/kernel/sched/ext_internal.h b/kernel/sched/ext_internal.h index af4c054fb6f8..2e289931e567 100644 --- a/kernel/sched/ext_internal.h +++ b/kernel/sched/ext_internal.h @@ -872,6 +872,7 @@ struct scx_sched { struct scx_sched_pcpu __percpu *pcpu; bool warned_zero_slice; + bool warned_deprecated_rq; atomic_t exit_kind; struct scx_exit_info *exit_info; |