嵌入式Linux2038问题内核时间time_t跟踪笔记

在Linux 2.6内核是这样子 cd include  grep -irn timer_t . ./asm-generic/posix_types.h:94:typedef int              __kernel_timer_t; ./asm-generic/siginfo.h:64:                     __kernel_timer_t _tid;  /* timer id */ ./linux/compat.h:523:                   timer_t __user *created_timer_id); ./linux/compat.h:524:asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, ./linux/compat.h:527:asmlinkage long compat_sys_timer_gettime(timer_t timer_id, ./linux/types.h:34:typedef __kernel_timer_t     timer_t; ./linux/syscalls.h:308:                          timer_t __user * created_timer_id); ./linux/syscalls.h:309:asmlinkage long sys_timer_gettime(timer_t timer_id, ./linux/syscalls.h:311:asmlinkage long sys_timer_getoverrun(timer_t timer_id); ./linux/syscalls.h:312:asmlinkage long sys_timer_settime(timer_t timer_id, int flags, ./linux/syscalls.h:315:asmlinkage long sys_timer_delete(timer_t timer_id); ./linux/xfrm.h:288:     XFRMA_ETIMER_THRESH, ./linux/ibmtr.h:312:    unsigned char timer_t1; ./linux/ibmtr.h:313:    unsigned char timer_t2; ./linux/ibmtr.h:314:    unsigned char timer_ti; ./linux/netfilter/xt_IDLETIMER.h:36:struct idletimer_tg_info { ./linux/netfilter/xt_IDLETIMER.h:42:    struct idletimer_tg *timer __attribute__((aligned(8))); ./linux/hrtimer.h:367:extern int hrtimer_try_to_cancel(struct hrtimer *timer); ./linux/alarmtimer.h:9:enum alarmtimer_type { ./linux/alarmtimer.h:39:        enum alarmtimer_type    type; ./linux/alarmtimer.h:44:void alarm_init(struct alarm *alarm, enum alarmtimer_type type, ./linux/posix-timers.h:60:      timer_t it_id;                  /* timer id */ ./linux/sfi.h:138:struct sfi_timer_table_entry { ./linux/sched.h:276:extern int get_nohz_timer_target(void); ./drm/nouveau_drm.h:79:#define NOUVEAU_GETPARAM_PTIMER_TIME     14 ./xen/interface/vcpu.h:134:#define VCPUOP_set_periodic_timer     6 /* arg == vcpu_set_periodic_timer_t */ ./xen/interface/vcpu.h:145:#define VCPUOP_set_singleshot_timer   8 /* arg == vcpu_set_singleshot_timer_t */ ./sound/ymfpci.h:334:   unsigned int timer_ticks; ./sound/asound.h:697:struct snd_timer_tread { ./rxrpc/types.h:34:typedef struct rxrpc_timer rxrpc_timer_t;   找到 ./linux/types.h:34:typedef __kernel_timer_t     timer_t;   搜索__kernel_timer_t  ./asm-generic/posix_types.h:94:typedef int              __kernel_timer_t; ./asm-generic/siginfo.h:64:                     __kernel_timer_t _tid;  /* timer id */ ./linux/types.h:34:typedef int              __kernel_timer_t;   typedef __kernel_timer_t     timer_t; :typedef int              __kernel_timer_t;  timer_t 是int类型   hecong@tdk:include$ grep -irn __kernel_time_t . ./asm-generic/posix_types.h:92:typedef __kernel_long_t  __kernel_time_t; ./asm-generic/sembuf.h:15: * 64 bit architectures typically define a 64 bit __kernel_time_t, ./asm-generic/sembuf.h:25:      __kernel_time_t sem_otime;      /* last semop time */ ./asm-generic/sembuf.h:29:      __kernel_time_t sem_ctime;      /* last change time */ ./asm-generic/shmbuf.h:15: * 64 bit architectures typically define a 64 bit __kernel_time_t, ./asm-generic/shmbuf.h:28:      __kernel_time_t         shm_atime;      /* last attach time */ ./asm-generic/shmbuf.h:32:      __kernel_time_t         shm_dtime;      /* last detach time */ ./asm-generic/shmbuf.h:36:      __kernel_time_t         shm_ctime;      /* last change time */ ./asm-generic/msgbuf.h:15: * 64 bit architectures typically define a 64 bit __kernel_time_t, ./asm-generic/msgbuf.h:26:      __kernel_time_t msg_stime;      /* last msgsnd time */ ./asm-generic/msgbuf.h:30:      __kernel_time_t msg_rtime;      /* last msgrcv time */ ./asm-generic/msgbuf.h:34:      __kernel_time_t msg_ctime;      /* last change time */ ./linux/utime.h:7:      __kernel_time_t actime; ./linux/utime.h:8:      __kernel_time_t modtime; ./linux/sem.h:25:       __kernel_time_t sem_otime;              /* last semop time */ ./linux/sem.h:26:       __kernel_time_t sem_ctime;              /* last change time */ ./linux/msg.h:19:       __kernel_time_t msg_stime;      /* last msgsnd time */ ./linux/msg.h:20:       __kernel_time_t msg_rtime;      /* last msgrcv time */ ./linux/msg.h:21:       __kernel_time_t msg_ctime;      /* last change time */ ./linux/dvb/video.h:140:        __kernel_time_t timestamp; ./linux/cyclades.h:85:    __kernel_time_t in_use;       /* Time device has been in use (secs) */ ./linux/cyclades.h:86:    __kernel_time_t recv_idle;    /* Time since last char received (secs) */ ./linux/cyclades.h:87:    __kernel_time_t xmit_idle;    /* Time since last char transmitted (secs) */ ./linux/types.h:78:typedef __kernel_time_t              time_t; ./linux/time.h:15:      __kernel_time_t tv_sec;                 /* seconds */ ./linux/time.h:21:      __kernel_time_t         tv_sec;         /* seconds */ ./linux/ppp_defs.h:150:    __kernel_time_t xmit_idle;   /* time since last NP packet sent */ ./linux/ppp_defs.h:151:    __kernel_time_t recv_idle;   /* time since last NP packet received */ ./linux/shm.h:35:       __kernel_time_t         shm_atime;      /* last attach time */ ./linux/shm.h:36:       __kernel_time_t         shm_dtime;      /* last detach time */ ./linux/shm.h:37:       __kernel_time_t         shm_ctime;      /* last change time */ hecong@tdk:include$ typedef __kernel_long_t  __kernel_time_t  time_t 是long类型 4.0内核及以下32位机制都有2038问题.4.0以上没有看 

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