On Tue, May 07, 2019 at 12:13:47PM +0100, Patrick Bellasi wrote:

On 17-Apr 15:26, Suren Baghdasaryan wrote:

quoted

On Tue, Apr 2, 2019 at 3:42 AM Patrick Bellasi [off-list ref] wrote:

quoted

quoted

@@ -1056,6 +1100,13 @@ static void __init init_uclamp(void)
 #else /* CONFIG_UCLAMP_TASK */
 static inline void uclamp_rq_inc(struct rq *rq, struct task_struct *p) { }
 static inline void uclamp_rq_dec(struct rq *rq, struct task_struct *p) { }
+static inline int uclamp_validate(struct task_struct *p,
+                                 const struct sched_attr *attr)
+{
+       return -ENODEV;

ENOSYS might be more appropriate?

Yep, agree, thanks!

No, -ENOSYS (see the comment) is special in that it indicates the whole
system call is unavailable; that is most certainly not the case!