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impove memory accounting

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. the total amount of memory in the system didn't include the memory
	  used by the boot-time modules and some dynamic allocation by the
	  kernel at boot time (to map in VM). especially apparent on our
	  ARM board with 'only' 512MB of memory and a huge ramdisk.
	. also: *add* the VM loaded module to the freelist after it has
	  been allocated for & mapped in instead of cutting it *out* of the
	  freelist! so we get a few more MB free..

Change-Id: If37ac32b21c9d38610830e21421264da4f20bc4f
This commit is contained in:
Ben Gras
2013-02-08 19:11:42 +01:00
parent d1df256de9
commit 3bc6d7df06
11 changed files with 40 additions and 26 deletions
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5
kernel/arch/earm/pre_init.c
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@@ -106,8 +106,8 @@ int overlaps(multiboot_module_t *mod, int n, int cmp_mod)
#define MB_PARAM_MOD 0x96000000
#define MB_MODS_ALIGN 0x00800000 /* 8 MB */
#define MB_MODS_SIZE 0x00004000 /* 16 KB */
#define MB_MMAP_START MB_MODS_BASE
#define MB_MMAP_SIZE 0x10000000 /* 256 MB */
#define MB_MMAP_START 0x80000000
#define MB_MMAP_SIZE 0x20000000 /* 512 MB */
multiboot_module_t mb_modlist[MB_MODS_NR];
multiboot_memory_map_t mb_memmap;
@@ -204,6 +204,7 @@ void get_parameters(u32_t ebx, kinfo_t *cbi)
* still needed but will be freed after bootstrapping.
*/
kinfo.kernel_allocated_bytes = (phys_bytes) &_kern_size;
kinfo.kernel_allocated_bytes -= cbi->bootstrap_len;
assert(!(cbi->bootstrap_start % ARM_PAGE_SIZE));
cbi->bootstrap_len = rounddown(cbi->bootstrap_len, ARM_PAGE_SIZE);