1// SPDX-License-Identifier: LGPL-2.1
 2#include <sched.h>
 3
 4/*
 5 * Not defined anywhere else, probably, just to make sure we
 6 * catch future flags
 7 */
 8#define SCHED_POLICY_MASK 0xff
 9
10#ifndef SCHED_DEADLINE
11#define SCHED_DEADLINE 6
12#endif
13#ifndef SCHED_RESET_ON_FORK
14#define SCHED_RESET_ON_FORK 0x40000000
15#endif
16
17static size_t syscall_arg__scnprintf_sched_policy(char *bf, size_t size,
18						  struct syscall_arg *arg)
19{
20	bool show_prefix = arg->show_string_prefix;
21	const char *prefix = "SCHED_";
22	const char *policies[] = {
23		"NORMAL", "FIFO", "RR", "BATCH", "ISO", "IDLE", "DEADLINE",
24	};
25	size_t printed;
26	int policy = arg->val,
27	    flags = policy & ~SCHED_POLICY_MASK;
28
29	policy &= SCHED_POLICY_MASK;
30	if (policy <= SCHED_DEADLINE)
31		printed = scnprintf(bf, size, "%s%s", show_prefix ? prefix : "", policies[policy]);
32	else
33		printed = scnprintf(bf, size, "%#x", policy);
34
35#define	P_POLICY_FLAG(n) \
36	if (flags & SCHED_##n) { \
37		printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "",  #n); \
38		flags &= ~SCHED_##n; \
39	}
40
41	P_POLICY_FLAG(RESET_ON_FORK);
42#undef P_POLICY_FLAG
43
44	if (flags)
45		printed += scnprintf(bf + printed, size - printed, "|%#x", flags);
46
47	return printed;
48}
49
50#define SCA_SCHED_POLICY syscall_arg__scnprintf_sched_policy