[BusyBox] Re: busybox init memory problems
bug1
bug1 at netconnect.com.au
Fri Jun 2 12:54:24 UTC 2000
bug1 wrote:
>
> Erik Andersen wrote:
> >
> > On Thu Jun 01, 2000 at 05:30:41AM +1000, bug1 wrote:
> > > When i try and use busybox (0.44pre) init during boot i get a message
> > > "Sorry, your computer does not have enough memory"
> > >
> > > I tried to do a bit of debugging, i put a line in displaying how much
> > > memory it detected just before it goes into the endless loop, it detects
> > > 31 (i assume KB) of memmory, i have 128MB.
> > >
> > > Im trying to use 2.4.0-test1 with it, is this a known problem ?
> >
> > Hmm. That is wierd. I have not yet tried it with 2.4.x yet (I have tried it
> > with the pre series and made a few minor adjustments to accomodate the kernel
> > changes). The mechanism I use to detect memory is sysinfo(2). I wonder if
> > that has broken in the recent kernels? If you comment out the memory check
> > completely, does the boot process complete? What does busybox free show and
> > what does 'cat /proc/meminfo' show after booting?
> >
> > -Erik
> >
> > --
> > Erik B. Andersen email: andersen at lineo.com
> > --This message was written using 73% post-consumer electrons--
>
> I comment out the memmory check part and it continues ok.
>
> busybox free shows only 7 free, /proc/meminfo shows the correct ammount.
>
> I could be doing something wrong, ill download the cvs version of
> busybox and have a go with a clean copy.
>
> Glenn
>
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The sysinfo struct has changed going to 2.[34], whats the best way to
fix this ?
from 2.4.0-test1-ac7 /include/linux/kernel.h
struct sysinfo {
long uptime; /* Seconds since boot */
unsigned long loads[3]; /* 1, 5, and 15 minute load
averages */
unsigned long totalram; /* Total usable main memory size
*/
unsigned long freeram; /* Available memory size */
unsigned long sharedram; /* Amount of shared memory */
unsigned long bufferram; /* Memory used by buffers */
unsigned long totalswap; /* Total swap space size */
unsigned long freeswap; /* swap space still available */
unsigned short procs; /* Number of current processes
*/
unsigned long totalhigh; /* Total high memory size */
unsigned long freehigh; /* Available high memory size */
unsigned int mem_unit; /* Memory unit size in bytes */
char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses
this.. */};
from same file in 2.2.16-pre7
struct sysinfo {
long uptime; /* Seconds since boot */
unsigned long loads[3]; /* 1, 5, and 15 minute load
averages */
unsigned long totalram; /* Total usable main memory size
*/
unsigned long freeram; /* Available memory size */
unsigned long sharedram; /* Amount of shared memory */
unsigned long bufferram; /* Memory used by buffers */
unsigned long totalswap; /* Total swap space size */
unsigned long freeswap; /* swap space still available */
unsigned short procs; /* Number of current processes
*/
char _f[22]; /* Pads structure to 64 bytes */
};
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