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struct signal_struct {
    atomic_t        count;
    struct k_sigaction  action[_NSIG];
    spinlock_t      siglock;
};
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struct asig_h
{
    unsigned int sigs;/*ÐźÅ*/
    int nforced;/*Äں˷¢Ë͵ÄÇ¿ÖÆÐźŵĸöÊý*/
};
struct mosix_task
{¡£¡£¡£¡£¡£¡£¡£
uint32_t asig;      /*µ½´ïREMOTEµÄÐźŠ*/
siginfo_t *forced_sigs; /* REMOTEÇ¿ÖÆÐźÅÐÅÏ¢*/
int nforced_sigs;   /* REMOTEÇ¿ÖÆÐźŵĸöÊý */
short sigmig;       /* Ç¨ÒÆÊ±½ÓÊÕµÄÐźŠ*/
}
int  mig_send_misc(int credit)
{ struct mig_misc_h m;
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