Revert "cobalt/kernel: Introduce __SCHED_CURRENT policy to setschedparam_ex"

This reverts commit b3c70f1a.

Was broken by design and is now no longer needed.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

include/cobalt/uapi/sched.h

@@ -21,9 +21,6 @@
 #define SCHED_COBALT		42
 #define SCHED_WEAK		43
 
-/* for internal use */
-#define __SCHED_CURRENT		44
-
 #ifndef SCHED_SPORADIC
 #define SCHED_SPORADIC		10
 #define sched_ss_low_priority	sched_u.ss.__sched_low_priority

kernel/cobalt/posix/thread.c

@@ -242,7 +242,6 @@ struct xnthread_personality *cobalt_thread_finalize(struct xnthread *zombie)
 int __cobalt_thread_setschedparam_ex(struct cobalt_thread *thread, int policy,
 				     const struct sched_param_ex *param_ex)
 {
-	struct xnthread *base_thread = &thread->threadbase;
 	struct xnsched_class *sched_class;
 	union xnsched_policy_param param;
 	xnticks_t tslice;
@@ -257,15 +256,6 @@ int __cobalt_thread_setschedparam_ex(struct cobalt_thread *thread, int policy,
 		goto out;
 	}
 
-	if (policy == __SCHED_CURRENT) {
-		policy = base_thread->base_class->policy;
-		if (xnthread_base_priority(base_thread) == 0)
-			policy = SCHED_NORMAL;
-		else if (base_thread->base_class == &xnsched_class_rt &&
-			 xnthread_test_state(base_thread, XNRRB))
-			policy = SCHED_RR;
-	}
-
 	tslice = thread->threadbase.rrperiod;
 	sched_class = cobalt_sched_policy_param(&param, policy,
 						param_ex, &tslice);

kernel/cobalt/trace/cobalt-posix.h

@@ -202,8 +202,7 @@ DECLARE_EVENT_CLASS(syscall_exit,
 			 {SCHED_QUOTA, "quota"},		\
 			 {SCHED_SPORADIC, "sporadic"},		\
 			 {SCHED_COBALT, "cobalt"},		\
-			 {SCHED_WEAK, "weak"},			\
-			 {__SCHED_CURRENT, "<current>"})
+			 {SCHED_WEAK, "weak"})
 
 const char *cobalt_trace_parse_sched_params(struct trace_seq *, int,
 					    struct sched_param_ex *);