162306a36Sopenharmony_ci// SPDX-License-Identifier: LGPL-2.1 262306a36Sopenharmony_ci#include <sched.h> 362306a36Sopenharmony_ci 462306a36Sopenharmony_ci/* 562306a36Sopenharmony_ci * Not defined anywhere else, probably, just to make sure we 662306a36Sopenharmony_ci * catch future flags 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci#define SCHED_POLICY_MASK 0xff 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#ifndef SCHED_DEADLINE 1162306a36Sopenharmony_ci#define SCHED_DEADLINE 6 1262306a36Sopenharmony_ci#endif 1362306a36Sopenharmony_ci#ifndef SCHED_RESET_ON_FORK 1462306a36Sopenharmony_ci#define SCHED_RESET_ON_FORK 0x40000000 1562306a36Sopenharmony_ci#endif 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_cistatic size_t syscall_arg__scnprintf_sched_policy(char *bf, size_t size, 1862306a36Sopenharmony_ci struct syscall_arg *arg) 1962306a36Sopenharmony_ci{ 2062306a36Sopenharmony_ci bool show_prefix = arg->show_string_prefix; 2162306a36Sopenharmony_ci const char *prefix = "SCHED_"; 2262306a36Sopenharmony_ci const char *policies[] = { 2362306a36Sopenharmony_ci "NORMAL", "FIFO", "RR", "BATCH", "ISO", "IDLE", "DEADLINE", 2462306a36Sopenharmony_ci }; 2562306a36Sopenharmony_ci size_t printed; 2662306a36Sopenharmony_ci int policy = arg->val, 2762306a36Sopenharmony_ci flags = policy & ~SCHED_POLICY_MASK; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci policy &= SCHED_POLICY_MASK; 3062306a36Sopenharmony_ci if (policy <= SCHED_DEADLINE) 3162306a36Sopenharmony_ci printed = scnprintf(bf, size, "%s%s", show_prefix ? prefix : "", policies[policy]); 3262306a36Sopenharmony_ci else 3362306a36Sopenharmony_ci printed = scnprintf(bf, size, "%#x", policy); 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci#define P_POLICY_FLAG(n) \ 3662306a36Sopenharmony_ci if (flags & SCHED_##n) { \ 3762306a36Sopenharmony_ci printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "", #n); \ 3862306a36Sopenharmony_ci flags &= ~SCHED_##n; \ 3962306a36Sopenharmony_ci } 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci P_POLICY_FLAG(RESET_ON_FORK); 4262306a36Sopenharmony_ci#undef P_POLICY_FLAG 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_ci if (flags) 4562306a36Sopenharmony_ci printed += scnprintf(bf + printed, size - printed, "|%#x", flags); 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_ci return printed; 4862306a36Sopenharmony_ci} 4962306a36Sopenharmony_ci 5062306a36Sopenharmony_ci#define SCA_SCHED_POLICY syscall_arg__scnprintf_sched_policy 51