x86: memtest bootparam
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 52f54ee..ae225c3 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -427,7 +427,10 @@
direct_gbpages = 0;
}
-static void __init memtest(unsigned long start_phys, unsigned long size, unsigned pattern)
+#ifdef CONFIG_MEMTEST_BOOTPARAM
+
+static void __init memtest(unsigned long start_phys, unsigned long size,
+ unsigned pattern)
{
unsigned long i;
unsigned long *start;
@@ -486,11 +489,12 @@
}
-static int __initdata memtest_pattern;
+static int memtest_pattern __initdata = CONFIG_MEMTEST_BOOTPARAM_VALUE;
+
static int __init parse_memtest(char *arg)
{
if (arg)
- memtest_pattern = simple_strtoul(arg, NULL, 0) + 1;
+ memtest_pattern = simple_strtoul(arg, NULL, 0);
return 0;
}
@@ -501,8 +505,10 @@
unsigned long t_start, t_size;
unsigned pattern;
- if (memtest_pattern)
- printk(KERN_INFO "early_memtest: pattern num %d", memtest_pattern);
+ if (!memtest_pattern)
+ return;
+
+ printk(KERN_INFO "early_memtest: pattern num %d", memtest_pattern);
for (pattern = 0; pattern < memtest_pattern; pattern++) {
t_start = start;
t_size = 0;
@@ -523,9 +529,13 @@
t_start += t_size;
}
}
- if (memtest_pattern)
- printk(KERN_CONT "\n");
+ printk(KERN_CONT "\n");
}
+#else
+static void __init early_memtest(unsigned long start, unsigned long end)
+{
+}
+#endif
/*
* Setup the direct mapping of the physical memory at PAGE_OFFSET.