Re: [hugang@soulinfo.com: [PATH]software suspend for ppc.]

[hugang]

On Thu, Jan 06, 2005 at 11:31:32PM +0100, Pavel Machek wrote:
> Hi!
> 
> > adding a option to freeze/thaw_processes, first freeze all user
> > processess, from now only kernel processess running, Now we can shrink
> > more memory than current version, after that freeze all processes.
> > that's mean if your swap space enough, swsusp will not fail. 
> 
> Thanks for the port... ...what is the test case this fixes?
> 
> Patch is pretty pretty simple, that's good...

# free
....
Mem:        256368     198148
...
Swap:       524280     140108

# ./eatmem 256

now do swsusp, the current swsusp will fail, with the patch it works.


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#include <stdio.h>

static int
do_malloc(int size)
{
	char *p;
	int i;

	for (i = 0; i < size; i++) {
		p = malloc(1024 * 1024);
		if (p == NULL) return -1;
		memset(p, 1, 1024 * 1024);
		printf("%2d\r", i);
		fflush(stdout);
	}
	return (0);
}

int 
main(int argc, char *argv[])
{
	int size = 200;

	if (argc == 2) {
		size = atoi(argv[1]);
	}

	do_malloc(size);

	pause();
}