1*4882a593Smuzhiyun // SPDX-License-Identifier: LGPL-2.1
2*4882a593Smuzhiyun #include <sched.h>
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun /*
5*4882a593Smuzhiyun * Not defined anywhere else, probably, just to make sure we
6*4882a593Smuzhiyun * catch future flags
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun #define SCHED_POLICY_MASK 0xff
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #ifndef SCHED_DEADLINE
11*4882a593Smuzhiyun #define SCHED_DEADLINE 6
12*4882a593Smuzhiyun #endif
13*4882a593Smuzhiyun #ifndef SCHED_RESET_ON_FORK
14*4882a593Smuzhiyun #define SCHED_RESET_ON_FORK 0x40000000
15*4882a593Smuzhiyun #endif
16*4882a593Smuzhiyun
syscall_arg__scnprintf_sched_policy(char * bf,size_t size,struct syscall_arg * arg)17*4882a593Smuzhiyun static size_t syscall_arg__scnprintf_sched_policy(char *bf, size_t size,
18*4882a593Smuzhiyun struct syscall_arg *arg)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun bool show_prefix = arg->show_string_prefix;
21*4882a593Smuzhiyun const char *prefix = "SCHED_";
22*4882a593Smuzhiyun const char *policies[] = {
23*4882a593Smuzhiyun "NORMAL", "FIFO", "RR", "BATCH", "ISO", "IDLE", "DEADLINE",
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun size_t printed;
26*4882a593Smuzhiyun int policy = arg->val,
27*4882a593Smuzhiyun flags = policy & ~SCHED_POLICY_MASK;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun policy &= SCHED_POLICY_MASK;
30*4882a593Smuzhiyun if (policy <= SCHED_DEADLINE)
31*4882a593Smuzhiyun printed = scnprintf(bf, size, "%s%s", show_prefix ? prefix : "", policies[policy]);
32*4882a593Smuzhiyun else
33*4882a593Smuzhiyun printed = scnprintf(bf, size, "%#x", policy);
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #define P_POLICY_FLAG(n) \
36*4882a593Smuzhiyun if (flags & SCHED_##n) { \
37*4882a593Smuzhiyun printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "", #n); \
38*4882a593Smuzhiyun flags &= ~SCHED_##n; \
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun P_POLICY_FLAG(RESET_ON_FORK);
42*4882a593Smuzhiyun #undef P_POLICY_FLAG
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun if (flags)
45*4882a593Smuzhiyun printed += scnprintf(bf + printed, size - printed, "|%#x", flags);
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun return printed;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun #define SCA_SCHED_POLICY syscall_arg__scnprintf_sched_policy
51