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 17 static 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 51