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authorHonggang Li <enjoymindful@gmail.com>2014-06-03 05:30:45 (GMT)
committerRichard Weinberger <richard@nod.at>2014-10-13 15:15:09 (GMT)
commit9e6a57d2cdee36a6d9c5d5cc3db85713dd416719 (patch)
treecf8fc0074fd53202b6eb552010326ecc58aa7671 /arch/um/include/shared
parent671312304ec73059a0128ff3ac7a5ced459098ae (diff)
downloadlinux-9e6a57d2cdee36a6d9c5d5cc3db85713dd416719.tar.xz
um: delete unnecessary bootmem struct page array
1) uml kernel bootmem managed through bootmem_data->node_bootmem_map, not the struct page array, so the array is unnecessary. 2) the bootmem struct page array has been pointed by a *local* pointer, struct page *map, in init_maps function. The array can be accessed only in init_maps's scope. As a result, uml kernel wastes about 1% of total memory. Signed-off-by: Honggang Li <enjoymindful@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/include/shared')
-rw-r--r--arch/um/include/shared/mem_user.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/include/shared/mem_user.h b/arch/um/include/shared/mem_user.h
index 46384ac..cb84414 100644
--- a/arch/um/include/shared/mem_user.h
+++ b/arch/um/include/shared/mem_user.h
@@ -49,7 +49,7 @@ extern int iomem_size;
extern int init_mem_user(void);
extern void setup_memory(void *entry);
extern unsigned long find_iomem(char *driver, unsigned long *len_out);
-extern int init_maps(unsigned long physmem, unsigned long iomem,
+extern void mem_total_pages(unsigned long physmem, unsigned long iomem,
unsigned long highmem);
extern unsigned long get_vm(unsigned long len);
extern void setup_physmem(unsigned long start, unsigned long usable,