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authorYinghai Lu <Yinghai.Lu@Sun.COM>2008-02-01 17:49:41 +0100
committerIngo Molnar <mingo@elte.hu>2008-02-01 17:49:41 +0100
commit25eff8d4cd7400372d490c392519c5b0064c03f7 (patch)
tree1d07ccfab1f58898dee245d48e7cca3c061b73cc /arch
parent24e1c13c93cbdd05e4b7ea921c0050b036555adc (diff)
downloadlinaro-lsk-25eff8d4cd7400372d490c392519c5b0064c03f7.tar.gz
x86_64: add debug name for early_res
helps debugging problems in this rather murky area of code. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/e820_64.c15
-rw-r--r--arch/x86/kernel/head64.c6
-rw-r--r--arch/x86/mm/init_64.c2
-rw-r--r--arch/x86/mm/numa_64.c2
4 files changed, 15 insertions, 10 deletions
diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c
index c617174e896..b74e83b214c 100644
--- a/arch/x86/kernel/e820_64.c
+++ b/arch/x86/kernel/e820_64.c
@@ -54,30 +54,33 @@ static unsigned long __initdata end_user_pfn = MAXMEM>>PAGE_SHIFT;
struct early_res {
unsigned long start, end;
+ char name[16];
};
static struct early_res early_res[MAX_EARLY_RES] __initdata = {
- { 0, PAGE_SIZE }, /* BIOS data page */
+ { 0, PAGE_SIZE, "BIOS data page" }, /* BIOS data page */
#ifdef CONFIG_SMP
- { SMP_TRAMPOLINE_BASE, SMP_TRAMPOLINE_BASE + 2*PAGE_SIZE },
+ { SMP_TRAMPOLINE_BASE, SMP_TRAMPOLINE_BASE + 2*PAGE_SIZE, "SMP_TRAMPOLINE" },
#endif
{}
};
-void __init reserve_early(unsigned long start, unsigned long end)
+void __init reserve_early(unsigned long start, unsigned long end, char *name)
{
int i;
struct early_res *r;
for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) {
r = &early_res[i];
if (end > r->start && start < r->end)
- panic("Overlapping early reservations %lx-%lx to %lx-%lx\n",
- start, end, r->start, r->end);
+ panic("Overlapping early reservations %lx-%lx %s to %lx-%lx %s\n",
+ start, end - 1, name?name:"", r->start, r->end - 1, r->name);
}
if (i >= MAX_EARLY_RES)
panic("Too many early reservations");
r = &early_res[i];
r->start = start;
r->end = end;
+ if (name)
+ strncpy(r->name, name, sizeof(r->name) - 1);
}
void __init early_res_to_bootmem(void)
@@ -85,6 +88,8 @@ void __init early_res_to_bootmem(void)
int i;
for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) {
struct early_res *r = &early_res[i];
+ printk(KERN_INFO "early res: %d [%lx-%lx] %s\n", i,
+ r->start, r->end - 1, r->name);
reserve_bootmem_generic(r->start, r->end - r->start);
}
}
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index a317336cdea..24dbf56928d 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -75,7 +75,7 @@ static __init void reserve_ebda(void)
if (ebda_size > 64*1024)
ebda_size = 64*1024;
- reserve_early(ebda_addr, ebda_addr + ebda_size);
+ reserve_early(ebda_addr, ebda_addr + ebda_size, "EBDA");
}
void __init x86_64_start_kernel(char * real_mode_data)
@@ -105,14 +105,14 @@ void __init x86_64_start_kernel(char * real_mode_data)
pda_init(0);
copy_bootdata(__va(real_mode_data));
- reserve_early(__pa_symbol(&_text), __pa_symbol(&_end));
+ reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");
/* Reserve INITRD */
if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
unsigned long ramdisk_size = boot_params.hdr.ramdisk_size;
unsigned long ramdisk_end = ramdisk_image + ramdisk_size;
- reserve_early(ramdisk_image, ramdisk_end);
+ reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
}
reserve_ebda();
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index cc50a13ce8d..9a471be4f5f 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -420,7 +420,7 @@ void __init_refok init_memory_mapping(unsigned long start, unsigned long end)
mmu_cr4_features = read_cr4();
__flush_tlb_all();
- reserve_early(table_start << PAGE_SHIFT, table_end << PAGE_SHIFT);
+ reserve_early(table_start << PAGE_SHIFT, table_end << PAGE_SHIFT, "PGTABLE");
}
#ifndef CONFIG_NUMA
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index dc3b1f7e145..d3395486608 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -103,7 +103,7 @@ static int __init allocate_cachealigned_memnodemap(void)
}
pad_addr = (nodemap_addr + pad) & ~pad;
memnodemap = phys_to_virt(pad_addr);
- reserve_early(nodemap_addr, nodemap_addr + nodemap_size);
+ reserve_early(nodemap_addr, nodemap_addr + nodemap_size, "MEMNODEMAP");
printk(KERN_DEBUG "NUMA: Allocated memnodemap from %lx - %lx\n",
nodemap_addr, nodemap_addr + nodemap_size);