[PATCH] Dynamic kernel command-line: x86_64
1. Rename saved_command_line into boot_command_line.
2. Set command_line as __initdata.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index cc230b9..be4bfb4 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -34,7 +34,7 @@
#define OLD_CL_BASE_ADDR 0x90000
#define OLD_CL_OFFSET 0x90022
-extern char saved_command_line[];
+extern char __initdata boot_command_line[];
static void __init copy_bootdata(char *real_mode_data)
{
@@ -50,7 +50,7 @@
new_data = OLD_CL_BASE_ADDR + * (u16 *) OLD_CL_OFFSET;
}
command_line = (char *) ((u64)(new_data));
- memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
+ memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
}
void __init x86_64_start_kernel(char * real_mode_data)
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index af425a8..6047724 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -100,7 +100,7 @@
extern int root_mountflags;
-char command_line[COMMAND_LINE_SIZE];
+char __initdata command_line[COMMAND_LINE_SIZE];
struct resource standard_io_resources[] = {
{ .name = "dma1", .start = 0x00, .end = 0x1f,
@@ -343,7 +343,7 @@
void __init setup_arch(char **cmdline_p)
{
- printk(KERN_INFO "Command line: %s\n", saved_command_line);
+ printk(KERN_INFO "Command line: %s\n", boot_command_line);
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
screen_info = SCREEN_INFO;
@@ -373,7 +373,7 @@
early_identify_cpu(&boot_cpu_data);
- strlcpy(command_line, saved_command_line, COMMAND_LINE_SIZE);
+ strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
parse_early_param();