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Message-Id: <200812012326.50334.rusty@rustcorp.com.au>
Date: Mon, 1 Dec 2008 23:26:49 +1030
From: Rusty Russell <rusty@...tcorp.com.au>
To: linux-kernel@...r.kernel.org
Cc: Tony Luck <tony.luck@...el.com>
Subject: [RFC 7/8] Call early_param earlier.
We delete all the arch calls: we call it from start_kernel earlier
now. We also no longer take a temporary copy, but parse in place.
Note: this probably breaks IA64. There's a comment which says machvec
needs to be set before other parameter parsing. This machvec= setting
should probably be moved before start_kernel, or even
arch_get_boot_command_line(). Or we can drop this change.
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
Cc: Tony Luck <tony.luck@...el.com>
---
arch/avr32/kernel/setup.c | 2 --
arch/ia64/kernel/setup.c | 2 --
arch/m68k/kernel/setup.c | 2 --
arch/mips/kernel/setup.c | 2 --
arch/powerpc/kernel/prom.c | 1 -
arch/s390/kernel/setup.c | 2 --
arch/sh/kernel/setup.c | 2 --
arch/sparc/kernel/setup.c | 3 ---
arch/sparc64/kernel/setup.c | 3 ---
arch/x86/kernel/setup.c | 3 ---
include/linux/init.h | 2 --
init/main.c | 21 ++++-----------------
12 files changed, 4 insertions(+), 41 deletions(-)
diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c
--- a/arch/avr32/kernel/setup.c
+++ b/arch/avr32/kernel/setup.c
@@ -579,8 +579,6 @@ void __init setup_arch(void)
((cpu_hz + 500) / 1000) % 1000);
}
- parse_early_param();
-
setup_bootmem();
#ifdef CONFIG_VT
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -554,8 +554,6 @@ void __init setup_arch(void)
*/
machvec_init_from_cmdline(boot_command_line);
#endif
-
- parse_early_param();
if (early_console_setup(boot_command_line) == 0)
mark_bsp_online();
diff --git a/arch/m68k/kernel/setup.c b/arch/m68k/kernel/setup.c
--- a/arch/m68k/kernel/setup.c
+++ b/arch/m68k/kernel/setup.c
@@ -268,8 +268,6 @@ void __init setup_arch(void)
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
- parse_early_param();
-
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -482,8 +482,6 @@ static void __init arch_mem_init(void)
pr_info("Determined physical RAM map:\n");
print_memory_map();
- parse_early_param();
-
if (usermem) {
pr_info("User-defined physical RAM map:\n");
print_memory_map();
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1188,7 +1188,6 @@ void __init early_init_devtree(void *par
/* Save command line for /proc/cmdline and then parse parameters */
strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
- parse_early_param();
/* Reserve LMB regions used by kernel, initrd, dt, etc... */
lmb_reserve(PHYSICAL_START, __pa(klimit) - PHYSICAL_START);
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -785,8 +785,6 @@ setup_arch(void)
else
memcpy(&uaccess, &uaccess_std, sizeof(uaccess));
- parse_early_param();
-
setup_ipl();
setup_memory_end();
setup_addressing_mode();
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -382,8 +382,6 @@ void __init setup_arch(void)
if (!memory_end)
memory_end = memory_start + __MEMORY_SIZE;
- parse_early_param();
-
sh_mv_setup();
/*
diff --git a/arch/sparc/kernel/setup.c b/arch/sparc/kernel/setup.c
--- a/arch/sparc/kernel/setup.c
+++ b/arch/sparc/kernel/setup.c
@@ -214,9 +214,6 @@ void __init setup_arch(void)
unsigned long highest_paddr;
sparc_ttable = (struct tt_entry *) &start;
-
- /* Initialize PROM console. */
- parse_early_param();
/* Set sparc_cpu_model */
sparc_cpu_model = sun_unknown;
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -283,9 +283,6 @@ void __init arch_get_boot_command_line(v
void __init setup_arch(void)
{
- /* Initialize PROM console. */
- parse_early_param();
-
boot_flags_init(boot_command_line);
register_console(&prom_early_console);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -887,8 +887,6 @@ void __init setup_arch(void)
bss_resource.start = virt_to_phys(&__bss_start);
bss_resource.end = virt_to_phys(&__bss_stop)-1;
- parse_early_param();
-
#ifdef CONFIG_X86_64
check_efer();
#endif
@@ -926,7 +924,6 @@ void __init setup_arch(void)
probe_roms();
#endif
- /* after parse_early_param, so could debug it */
insert_resource(&iomem_resource, &code_resource);
insert_resource(&iomem_resource, &data_resource);
insert_resource(&iomem_resource, &bss_resource);
diff --git a/include/linux/init.h b/include/linux/init.h
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -245,8 +245,6 @@ struct obs_kernel_param {
#define early_param(str, fn) \
__setup_param(str, fn, fn, 1)
-/* Relies on boot_command_line being set */
-void __init parse_early_param(void);
#endif /* __ASSEMBLY__ */
/**
diff --git a/init/main.c b/init/main.c
--- a/init/main.c
+++ b/init/main.c
@@ -206,7 +206,7 @@ static int __init obsolete_checksetup(ch
int n = strlen(p->str);
if (!strncmp(line, p->str, n)) {
if (p->early) {
- /* Already done in parse_early_param?
+ /* Already done in do_early_param?
* (Needs exact match on param part).
* Keep iterating, as we can have early
* params and __setups of same names 8( */
@@ -518,21 +518,6 @@ static int __init do_early_param(char *p
return 0;
}
-/* Arch code calls this early on, or if not, just before other parsing. */
-void __init parse_early_param(void)
-{
- static __initdata int done = 0;
- static __initdata char tmp_cmdline[COMMAND_LINE_SIZE];
-
- if (done)
- return;
-
- /* All fall through to do_early_param. */
- strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
- parse_args("early options", tmp_cmdline, NULL, 0, do_early_param, true);
- done = 1;
-}
-
/*
* Activate the first processor.
*/
@@ -568,6 +553,9 @@ asmlinkage void __init start_kernel(void
parse_args("Core params", boot_command_line, __start___core_param,
__stop___core_param - __start___core_param,
unknown_core_ok, true);
+ /* All fall through to do_early_param. */
+ parse_args("early options", boot_command_line, NULL, 0, do_early_param,
+ true);
smp_setup_processor_id();
@@ -617,7 +605,6 @@ asmlinkage void __init start_kernel(void
build_all_zonelists();
page_alloc_init();
printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);
- parse_early_param();
parse_args("Booting kernel", static_command_line, __start___param,
__stop___param - __start___param,
&unknown_bootoption, false);
--
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