diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/ext/ext.c | 4 | ||||
| -rw-r--r-- | kernel/sched/ext/internal.h | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/kernel/sched/ext/ext.c b/kernel/sched/ext/ext.c index 151befdc9602..14775e288a6e 100644 --- a/kernel/sched/ext/ext.c +++ b/kernel/sched/ext/ext.c @@ -108,6 +108,9 @@ static bool dsq_is_rq_owned(struct scx_dispatch_q *dsq) } } +/* Cursor for unique scx_sched instance ids. id 0 is reserved. */ +static atomic64_t scx_sched_id_cursor = ATOMIC64_INIT(0); + #ifdef CONFIG_EXT_SUB_SCHED /* * The sub sched being enabled. Used by scx_disable_and_exit_task() to exit @@ -6502,6 +6505,7 @@ struct scx_sched *scx_alloc_and_add_sched(struct scx_enable_cmd *cmd, level * sizeof(parent->ancestors[0])); sch->ancestors[level] = sch; sch->level = level; + sch->id = atomic64_inc_return(&scx_sched_id_cursor); if (ops->timeout_ms) sch->watchdog_timeout = msecs_to_jiffies(ops->timeout_ms); diff --git a/kernel/sched/ext/internal.h b/kernel/sched/ext/internal.h index e735812e77a5..ad98e3469b12 100644 --- a/kernel/sched/ext/internal.h +++ b/kernel/sched/ext/internal.h @@ -1445,6 +1445,9 @@ struct scx_sched { struct list_head all; + /* unique instance id, monotonic and never reused */ + u64 id; + #ifdef CONFIG_EXT_SUB_SCHED struct rhash_head hash_node; |