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sched_ext: Mark SCX_OPS_HAS_CGROUP_WEIGHT for deprecation

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SCX_OPS_HAS_CGROUP_WEIGHT was only used to suppress the missing cgroup
weight support warnings. Now that the warnings are removed, the flag doesn't
do anything. Mark it for deprecation and remove its usage from scx_flatcg.

v2: Actually include the scx_flatcg update.

Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-and-reviewed-by: Andrea Righi <arighi@nvidia.com>
This commit is contained in:
Tejun Heo
2025-04-08 08:31:12 -10:00
parent e776b26e37
commit bc08b15b54
2 changed files with 5 additions and 2 deletions
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5
kernel/sched/ext.c
View File

@@ -163,7 +163,7 @@ enum scx_ops_flags {
/*
* CPU cgroup support flags
*/
SCX_OPS_HAS_CGROUP_WEIGHT = 1LLU << 16, /* cpu.weight */
SCX_OPS_HAS_CGROUP_WEIGHT = 1LLU << 16, /* DEPRECATED, will be removed on 6.18 */
SCX_OPS_ALL_FLAGS = SCX_OPS_KEEP_BUILTIN_IDLE |
SCX_OPS_ENQ_LAST |
@@ -5213,6 +5213,9 @@ static int validate_ops(const struct sched_ext_ops *ops)
return -EINVAL;
}
if (ops->flags & SCX_OPS_HAS_CGROUP_WEIGHT)
pr_warn("SCX_OPS_HAS_CGROUP_WEIGHT is deprecated and a noop\n");
return 0;
}

2
tools/sched_ext/scx_flatcg.bpf.c
View File

@@ -950,5 +950,5 @@ SCX_OPS_DEFINE(flatcg_ops,
.cgroup_move = (void *)fcg_cgroup_move,
.init = (void *)fcg_init,
.exit = (void *)fcg_exit,
.flags = SCX_OPS_HAS_CGROUP_WEIGHT | SCX_OPS_ENQ_EXITING,
.flags = SCX_OPS_ENQ_EXITING,
.name = "flatcg");