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