Mastering Linux Kernel Development

flags

The flags field records various attributes corresponding to a process. Each bit in the field corresponds to various stages in the lifetime of a process. Per-process flags are defined in <linux/sched.h>:

#define PF_EXITING           /* getting shut down */#define PF_EXITPIDONE        /* pi exit done on shut down */#define PF_VCPU              /* I'm a virtual CPU */#define PF_WQ_WORKER         /* I'm a workqueue worker */#define PF_FORKNOEXEC        /* forked but didn't exec */#define PF_MCE_PROCESS       /* process policy on mce errors */#define PF_SUPERPRIV         /* used super-user privileges */#define PF_DUMPCORE          /* dumped core */#define PF_SIGNALED          /* killed by a signal */#define PF_MEMALLOC          /* Allocating memory */#define PF_NPROC_EXCEEDED /* set_user noticed that RLIMIT_NPROC was exceeded ...