LXR linux/tools/perf/trace/beauty/sched

   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
  51