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authorMike Rapoport <rppt@linux.vnet.ibm.com>2018-08-06 13:52:35 +0300
committerDavid S. Miller <davem@davemloft.net>2018-08-21 12:40:26 -0700
commit8818d89cf8fb4df617412c45a983773d3720a97a (patch)
tree7e5e2d0017da0d5bf369d3f4dfa0ac3cbfed765c /arch/sparc/mm
parentsparc32: switch to NO_BOOTMEM (diff)
downloadlinux-dev-8818d89cf8fb4df617412c45a983773d3720a97a.tar.xz
linux-dev-8818d89cf8fb4df617412c45a983773d3720a97a.zip
sparc32: split ramdisk detection and reservation to a helper function
The detection and reservation of ramdisk memory were separated to allow bootmem bitmap initialization after the ramdisk boundaries are detected. Since the bootmem initialization is removed, the reservation of ramdisk memory is done immediately after its boundaries are found. Split the entire block into a separate helper function. Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Suggested-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm')
-rw-r--r--arch/sparc/mm/init_32.c56
1 files changed, 31 insertions, 25 deletions
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index e786fe0f0059..92634d4e440c 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -102,6 +102,36 @@ static unsigned long calc_max_low_pfn(void)
return tmp;
}
+static void __init find_ramdisk(unsigned long end_of_phys_memory)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+ unsigned long size;
+
+ /* Now have to check initial ramdisk, so that it won't pass
+ * the end of memory
+ */
+ if (sparc_ramdisk_image) {
+ if (sparc_ramdisk_image >= (unsigned long)&_end - 2 * PAGE_SIZE)
+ sparc_ramdisk_image -= KERNBASE;
+ initrd_start = sparc_ramdisk_image + phys_base;
+ initrd_end = initrd_start + sparc_ramdisk_size;
+ if (initrd_end > end_of_phys_memory) {
+ printk(KERN_CRIT "initrd extends beyond end of memory "
+ "(0x%016lx > 0x%016lx)\ndisabling initrd\n",
+ initrd_end, end_of_phys_memory);
+ initrd_start = 0;
+ } else {
+ /* Reserve the initrd image area. */
+ size = initrd_end - initrd_start;
+ memblock_reserve(initrd_start, size);
+
+ initrd_start = (initrd_start - phys_base) + PAGE_OFFSET;
+ initrd_end = (initrd_end - phys_base) + PAGE_OFFSET;
+ }
+ }
+#endif
+}
+
unsigned long __init bootmem_init(unsigned long *pages_avail)
{
unsigned long start_pfn, bytes_avail, size;
@@ -160,32 +190,8 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
high_pages >> (20 - PAGE_SHIFT));
}
-#ifdef CONFIG_BLK_DEV_INITRD
- /* Now have to check initial ramdisk, so that it won't pass
- * the end of memory
- */
- if (sparc_ramdisk_image) {
- if (sparc_ramdisk_image >= (unsigned long)&_end - 2 * PAGE_SIZE)
- sparc_ramdisk_image -= KERNBASE;
- initrd_start = sparc_ramdisk_image + phys_base;
- initrd_end = initrd_start + sparc_ramdisk_size;
- if (initrd_end > end_of_phys_memory) {
- printk(KERN_CRIT "initrd extends beyond end of memory "
- "(0x%016lx > 0x%016lx)\ndisabling initrd\n",
- initrd_end, end_of_phys_memory);
- initrd_start = 0;
- }
- }
-
- if (initrd_start) {
- /* Reserve the initrd image area. */
- size = initrd_end - initrd_start;
- memblock_reserve(initrd_start, size);
+ find_ramdisk(end_of_phys_memory);
- initrd_start = (initrd_start - phys_base) + PAGE_OFFSET;
- initrd_end = (initrd_end - phys_base) + PAGE_OFFSET;
- }
-#endif
/* Reserve the kernel text/data/bss. */
size = (start_pfn << PAGE_SHIFT) - phys_base;
memblock_reserve(phys_base, size);