[PATCHv3 9/9] x86: setup - mark __init strings as such

Mathias Krause
2014-08-21T12:24:22Z

Make use of the pi_<level>() helpers to mark the strings printed during
initialization for automatic release. Do so for the strings used in boot
parameters parsing as well, by using the __init_str() macro.

The debug messages have been converted to printk_init(KERN_DEBUG ...)
instead of pi_debug(...), though. They might have some value beyond
debugging. Moreover, this ensures we won't loose any message by this
conversion.

This moves ~0.5 kB from the .rodata section to .init.rodata, marking it
for release after initialization.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
---
arch/x86/kernel/setup.c | 70 +++++++++++++++++++++++------------------------
1 file changed, 34 insertions(+), 36 deletions(-)

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 41ead8d3bc..82f211a310 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -111,6 +111,8 @@
#include <asm/alternative.h>
#include <asm/prom.h>

+#define _(x) __init_str(x)
+
/*
* max_low_pfn_mapped: highest direct mapped pfn under 4GB
* max_pfn_mapped: highest direct mapped pfn over 4GB
@@ -331,7 +333,7 @@ static void __init relocate_initrd(void)
area_size, PAGE_SIZE);

if (!relocated_ramdisk)
- panic("Cannot find place for new RAMDISK of size %lld\n",
+ panic(_("Cannot find place for new RAMDISK of size %lld\n"),
ramdisk_size);

/* Note: this includes all the mem currently occupied by
@@ -339,8 +341,8 @@ static void __init relocate_initrd(void)
memblock_reserve(relocated_ramdisk, area_size);
initrd_start = relocated_ramdisk + PAGE_OFFSET;
initrd_end = initrd_start + ramdisk_size;
- printk(KERN_INFO "Allocated new RAMDISK: [mem %#010llx-%#010llx]\n",
- relocated_ramdisk, relocated_ramdisk + ramdisk_size - 1);
+ pi_info("Allocated new RAMDISK: [mem %#010llx-%#010llx]\n",
+ relocated_ramdisk, relocated_ramdisk + ramdisk_size - 1);

q = (char *)initrd_start;

@@ -361,8 +363,7 @@ static void __init relocate_initrd(void)

ramdisk_image = get_ramdisk_image();
ramdisk_size = get_ramdisk_size();
- printk(KERN_INFO "Move RAMDISK from [mem %#010llx-%#010llx] to"
- " [mem %#010llx-%#010llx]\n",
+ pi_info("Move RAMDISK from [mem %#010llx-%#010llx] to [mem %#010llx-%#010llx]\n",
ramdisk_image, ramdisk_image + ramdisk_size - 1,
relocated_ramdisk, relocated_ramdisk + ramdisk_size - 1);
}
@@ -396,12 +397,12 @@ static void __init reserve_initrd(void)

mapped_size = memblock_mem_size(max_pfn_mapped);
if (ramdisk_size >= (mapped_size>>1))
- panic("initrd too large to handle, "
- "disabling initrd (%lld needed, %lld available)\n",
- ramdisk_size, mapped_size>>1);
+ panic(_("initrd too large to handle, "
+ "disabling initrd (%lld needed, %lld available)\n"),
+ ramdisk_size, mapped_size>>1);

- printk(KERN_INFO "RAMDISK: [mem %#010llx-%#010llx]\n", ramdisk_image,
- ramdisk_end - 1);
+ pi_info("RAMDISK: [mem %#010llx-%#010llx]\n", ramdisk_image,
+ ramdisk_end - 1);

if (pfn_range_is_mapped(PFN_DOWN(ramdisk_image),
PFN_DOWN(ramdisk_end))) {
@@ -478,8 +479,8 @@ static void __init e820_reserve_setup_data(void)

sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
memcpy(&e820_saved, &e820, sizeof(struct e820map));
- printk(KERN_INFO "extended physical RAM map:\n");
- e820_print_map("reserve setup_data");
+ pi_info("extended physical RAM map:\n");
+ e820_print_map(_("reserve setup_data"));
}

static void __init memblock_x86_reserve_range_setup_data(void)
@@ -550,16 +551,16 @@ static void __init reserve_crashkernel_low(void)

if (!low_base) {
if (!auto_set)
- pr_info("crashkernel low reservation failed - No suitable area found.\n");
+ pi_info("crashkernel low reservation failed - No suitable area found.\n");

return;
}

memblock_reserve(low_base, low_size);
- pr_info("Reserving %ldMB of low memory at %ldMB for crashkernel (System low RAM: %ldMB)\n",
- (unsigned long)(low_size >> 20),
- (unsigned long)(low_base >> 20),
- (unsigned long)(total_low_mem >> 20));
+ pi_info("Reserving %ldMB of low memory at %ldMB for crashkernel (System low RAM: %ldMB)\n",
+ (unsigned long)(low_size >> 20),
+ (unsigned long)(low_base >> 20),
+ (unsigned long)(total_low_mem >> 20));
crashk_low_res.start = low_base;
crashk_low_res.end = low_base + low_size - 1;
insert_resource(&iomem_resource, &crashk_low_res);
@@ -599,7 +600,7 @@ static void __init reserve_crashkernel(void)
crash_size, alignment);

if (!crash_base) {
- pr_info("crashkernel reservation failed - No suitable area found.\n");
+ pi_info("crashkernel reservation failed - No suitable area found.\n");
return;
}

@@ -609,17 +610,16 @@ static void __init reserve_crashkernel(void)
start = memblock_find_in_range(crash_base,
crash_base + crash_size, crash_size, 1<<20);
if (start != crash_base) {
- pr_info("crashkernel reservation failed - memory is in use.\n");
+ pi_info("crashkernel reservation failed - memory is in use.\n");
return;
}
}
memblock_reserve(crash_base, crash_size);

- printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
- "for crashkernel (System RAM: %ldMB)\n",
- (unsigned long)(crash_size >> 20),
- (unsigned long)(crash_base >> 20),
- (unsigned long)(total_mem >> 20));
+ pi_info("Reserving %ldMB of memory at %ldMB for crashkernel (System RAM: %ldMB)\n",
+ (unsigned long)(crash_size >> 20),
+ (unsigned long)(crash_base >> 20),
+ (unsigned long)(total_mem >> 20));

crashk_res.start = crash_base;
crashk_res.end = crash_base + crash_size - 1;
@@ -727,7 +727,7 @@ static void __init trim_snb_memory(void)
if (!snb_gfx_workaround_needed())
return;

- printk(KERN_DEBUG "reserving inaccessible SNB gfx pages\n");
+ printk_init(KERN_DEBUG "reserving inaccessible SNB gfx pages\n");

/*
* Reserve all memory below the 1 MB mark that has not
@@ -737,8 +737,7 @@ static void __init trim_snb_memory(void)

for (i = 0; i < ARRAY_SIZE(bad_pages); i++) {
if (memblock_reserve(bad_pages[i], PAGE_SIZE))
- printk(KERN_WARNING "failed to reserve 0x%08lx\n",
- bad_pages[i]);
+ pi_warn("failed to reserve 0x%08lx\n", bad_pages[i]);
}
}

@@ -793,7 +792,7 @@ static void __init e820_add_kernel_range(void)
if (e820_all_mapped(start, start + size, E820_RAM))
return;

- pr_warn(".text .data .bss are not marked as E820_RAM!\n");
+ pi_warn(".text .data .bss are not marked as E820_RAM!\n");
e820_remove_range(start, size, E820_RAM, 0);
e820_add_region(start, size, E820_RAM);
}
@@ -819,7 +818,6 @@ static int __init parse_reservelow(char *p)

return 0;
}
-
early_param("reservelow", parse_reservelow);

static void __init trim_low_memory_range(void)
@@ -881,7 +879,7 @@ void __init setup_arch(char **cmdline_p)
load_cr3(swapper_pg_dir);
__flush_tlb_all();
#else
- printk(KERN_INFO "Command line: %s\n", boot_command_line);
+ pi_info("Command line: %s\n", boot_command_line);
#endif

/*
@@ -924,10 +922,10 @@ void __init setup_arch(char **cmdline_p)
#endif
#ifdef CONFIG_EFI
if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
- EFI32_LOADER_SIGNATURE, 4)) {
+ _(EFI32_LOADER_SIGNATURE), 4)) {
set_bit(EFI_BOOT, &efi.flags);
} else if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
- EFI64_LOADER_SIGNATURE, 4)) {
+ _(EFI64_LOADER_SIGNATURE), 4)) {
set_bit(EFI_BOOT, &efi.flags);
set_bit(EFI_64BIT, &efi.flags);
}
@@ -1033,8 +1031,8 @@ void __init setup_arch(char **cmdline_p)
e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
E820_RESERVED);
sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
- printk(KERN_INFO "fixed physical RAM map:\n");
- e820_print_map("bad_ppro");
+ pi_info("fixed physical RAM map:\n");
+ e820_print_map(_("bad_ppro"));
}
#else
early_gart_iommu_check();
@@ -1103,8 +1101,8 @@ void __init setup_arch(char **cmdline_p)
#endif

#ifdef CONFIG_X86_32
- printk(KERN_DEBUG "initial memory mapped: [mem 0x00000000-%#010lx]\n",
- (max_pfn_mapped<<PAGE_SHIFT) - 1);
+ printk_init(KERN_DEBUG "initial memory mapped: [mem 0x00000000-%#010lx]\n",
+ (max_pfn_mapped<<PAGE_SHIFT) - 1);
#endif

reserve_real_mode();
--
1.7.10.4