root/kernel/info.c

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DEFINITIONS

This source file includes following definitions.
  1. sys_sysinfo

   1 /*
   2  * linux/kernel/info.c
   3  *
   4  * Copyright (C) 1992 Darren Senn
   5  */
   6 
   7 /* This implements the sysinfo() system call */
   8 
   9 #include <asm/segment.h>
  10 
  11 #include <linux/sched.h>
  12 #include <linux/string.h>
  13 #include <linux/unistd.h>
  14 #include <linux/types.h>
  15 #include <linux/mm.h>
  16 
  17 int sys_sysinfo(struct sysinfo *info)
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  18 {
  19         struct sysinfo val;
  20         struct task_struct **p;
  21 
  22         verify_area(info, sizeof(struct sysinfo));
  23         memset((char *)&val, 0, sizeof(struct sysinfo));
  24 
  25         val.uptime = (jiffies + jiffies_offset) / HZ;
  26 
  27         val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT);
  28         val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT);
  29         val.loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT);
  30 
  31         for (p = &LAST_TASK; p > &FIRST_TASK; p--)
  32                 if (*p) val.procs++;
  33 
  34         si_meminfo(&val);
  35         si_swapinfo(&val);
  36 
  37         memcpy_tofs(info, &val, sizeof(struct sysinfo));
  38         return 0;
  39 }

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