1#include <sys/sysinfo.h>
 2#include "syscall.h"
 3
 4#define klong long long
 5#define kulong unsigned long long
 6
 7struct kernel_sysinfo {
 8	klong uptime;
 9	kulong loads[3];
10	kulong totalram;
11	kulong freeram;
12	kulong sharedram;
13	kulong bufferram;
14	kulong totalswap;
15	kulong freeswap;
16	short procs;
17	short pad;
18	kulong totalhigh;
19	kulong freehigh;
20	unsigned mem_unit;
21};
22
23int __lsysinfo(struct sysinfo *info)
24{
25	struct kernel_sysinfo tmp;
26	int ret = syscall(SYS_sysinfo, &tmp);
27	if(ret == -1) return ret;
28	info->uptime = tmp.uptime;
29	info->loads[0] = tmp.loads[0];
30	info->loads[1] = tmp.loads[1];
31	info->loads[2] = tmp.loads[2];
32	kulong shifts;
33	kulong max = tmp.totalram | tmp.totalswap;
34	__asm__("bsr %1,%0" : "=r"(shifts) : "r"(max));
35	shifts = shifts >= 32 ? shifts - 31 : 0;
36	info->totalram = tmp.totalram >> shifts;
37	info->freeram = tmp.freeram >> shifts;
38	info->sharedram = tmp.sharedram >> shifts;
39	info->bufferram = tmp.bufferram >> shifts;
40	info->totalswap = tmp.totalswap >> shifts;
41	info->freeswap = tmp.freeswap >> shifts;
42	info->procs = tmp.procs ;
43	info->totalhigh = tmp.totalhigh >> shifts;
44	info->freehigh = tmp.freehigh >> shifts;
45	info->mem_unit = (tmp.mem_unit ? tmp.mem_unit : 1) << shifts;
46	return ret;
47}
48
49weak_alias(__lsysinfo, sysinfo);