/proc/xenomai/sched 里状态符号的意思

$ cat /proc/xenomai/sched

CPU  PID    CLASS  PRI      TIMEOUT   TIMEBASE   STAT       NAME
  0  0      idle    -1      -         master     R          ROOT/0

参考 include/xenomai/nucleus/thread.h:

/*
   Must follow the declaration order of the above bits. Status symbols
   are defined as follows:
   'S' -> Forcibly suspended.
   'w'/'W' -> Waiting for a resource, with or without timeout.
   'D' -> Delayed (without any other wait condition).
   'R' -> Runnable.
   'U' -> Unstarted or dormant.
   'X' -> Relaxed shadow.
   'H' -> Held in emergency.
   'b' -> Priority boost undergoing.
   'T' -> Ptraced and stopped.
   'l' -> Locks scheduler.
   'r' -> Undergoes round-robin.
   's' -> Interrupt shield enabled.
   't' -> Mode switches trapped.
   'o' -> Priority coupling off.
   'f' -> FPU enabled (for kernel threads).
 */