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Attempt to provide real values for meminfo.

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This commit is contained in:
Dag-Erling Smørgrav 2000-03-25 19:41:18 +00:00
parent 190701a53a
commit c2c0fac9c9
1 changed files with 52 additions and 19 deletions
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71
sys/miscfs/linprocfs/linprocfs_misc.c
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@ -45,6 +45,7 @@
#include <sys/proc.h>
#include <sys/jail.h>
#include <sys/vnode.h>
#include <sys/blist.h>
#include <sys/tty.h>
#include <sys/resourcevar.h>
#include <miscfs/linprocfs/linprocfs.h>
@ -52,6 +53,8 @@
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <vm/swap_pager.h>
#include <sys/vmmeter.h>
#include <sys/exec.h>
#include <machine/md_var.h>
@ -70,33 +73,63 @@ linprocfs_domeminfo(curp, p, pfs, uio)
int xlen;
int error;
char psbuf[512]; /* XXX - conservative */
unsigned long memtotal, memfree, memshared;
unsigned long buffers, cached, swaptotal, swapfree;
unsigned long memtotal; /* total memory in bytes */
unsigned long memused; /* used memory in bytes */
unsigned long memfree; /* free memory in bytes */
unsigned long memshared; /* shared memory ??? */
unsigned long buffers, cached; /* buffer / cache memory ??? */
unsigned long swaptotal; /* total swap space in bytes */
unsigned long swapused; /* used swap space in bytes */
unsigned long swapfree; /* free swap space in bytes */
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
memtotal = 32768; memfree = 32768;
buffers = 16384; cached = 8192;
swaptotal = 32768; swapfree = 16384;
memshared = 0;
memtotal = physmem * PAGE_SIZE;
/*
* The correct thing here would be:
*
memfree = cnt.v_free_count * PAGE_SIZE;
memused = memtotal - memfree;
*
* but it might mislead linux binaries into thinking there
* is very little memory left, so we cheat and tell them that
* all memory that isn't wired down is free.
*/
memused = cnt.v_wire_count * PAGE_SIZE;
memfree = memtotal - memused;
swaptotal = swapblist->bl_blocks * 1024; /* XXX why 1024? */
swapfree = swapblist->bl_root->u.bmu_avail * PAGE_SIZE;
swapused = swaptotal - swapfree;
memshared = 0; /* XXX what's this supposed to be? */
/*
* We'd love to be able to write:
*
buffers = bufspace;
*
* but bufspace is internal to vfs_bio.c and we don't feel
* like unstaticizing it just for linprocfs's sake.
*/
buffers = 0;
cached = cnt.v_cache_count * PAGE_SIZE;
ps = psbuf;
ps += sprintf(ps,
" total: used: free: shared: buffers: cached:\n"
"Mem: %ld %ld %ld %ld %ld %ld\nSwap: %ld %ld %ld\n"
"MemTotal: %9ld kB\n"
"MemFree: %9ld kB\n"
"MemShared:%9ld kB\n"
"Buffers: %9ld kB\n"
"Cached: %9ld kB\n"
"SwapTotal:%9ld kB\n"
"SwapFree: %9ld kB\n",
memtotal*1024, (memtotal-memfree)*1024, memfree*1024,
memshared*1024, buffers*1024, cached*1024,
swaptotal*1024, (swaptotal-swapfree)*1024, swapfree*1024,
memtotal, memfree, memshared, buffers, cached,
swaptotal, swapfree);
"Mem: %lu %lu %lu %lu %lu %lu\n"
"Swap: %lu %lu %lu\n"
"MemTotal: %9lu kB\n"
"MemFree: %9lu kB\n"
"MemShared:%9lu kB\n"
"Buffers: %9lu kB\n"
"Cached: %9lu kB\n"
"SwapTotal:%9lu kB\n"
"SwapFree: %9lu kB\n",
memtotal, memused, memfree, memshared, buffers, cached,
swaptotal, swapused, swapfree,
memtotal >> 10, memfree >> 10,
memshared >> 10, buffers >> 10, cached >> 10,
swaptotal >> 10, swapfree >> 10);
xlen = ps - psbuf;
xlen -= uio->uio_offset;