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Date: Tue, 10 Dec 2013 18:08:32 +0800
From: Xishi Qiu <qiuxishi@...wei.com>
To: <tglx@...utronix.de>, <mingo@...hat.com>, <hpa@...or.com>,
<yinghai@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>
CC: <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
<linux-efi@...r.kernel.org>, <xen-devel@...ts.xenproject.org>,
Xishi Qiu <qiuxishi@...wei.com>
Subject: [PATCH] mm,x86: use E820_X_MAX instead of ARRAY_SIZE(e820.map)
Use E820_X_MAX instead of ARRAY_SIZE(e820.map).
Code simplification, no functional changes.
Signed-off-by: Xishi Qiu <qiuxishi@...wei.com>
---
arch/x86/kernel/e820.c | 10 +++++-----
arch/x86/kernel/early-quirks.c | 2 +-
arch/x86/kernel/setup.c | 6 +++---
arch/x86/platform/efi/efi.c | 2 +-
arch/x86/xen/setup.c | 2 +-
5 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 174da5f..97800ba 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -112,7 +112,7 @@ static void __init __e820_add_region(struct e820map *e820x, u64 start, u64 size,
{
int x = e820x->nr_map;
- if (x >= ARRAY_SIZE(e820x->map)) {
+ if (x >= E820_X_MAX) {
printk(KERN_ERR "e820: too many entries; ignoring [mem %#010llx-%#010llx]\n",
(unsigned long long) start,
(unsigned long long) (start + size - 1));
@@ -564,7 +564,7 @@ void __init update_e820(void)
u32 nr_map;
nr_map = e820.nr_map;
- if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr_map))
+ if (sanitize_e820_map(e820.map, E820_X_MAX, &nr_map))
return;
e820.nr_map = nr_map;
printk(KERN_INFO "e820: modified physical RAM map:\n");
@@ -575,7 +575,7 @@ static void __init update_e820_saved(void)
u32 nr_map;
nr_map = e820_saved.nr_map;
- if (sanitize_e820_map(e820_saved.map, ARRAY_SIZE(e820_saved.map), &nr_map))
+ if (sanitize_e820_map(e820_saved.map, E820_X_MAX, &nr_map))
return;
e820_saved.nr_map = nr_map;
}
@@ -668,7 +668,7 @@ void __init parse_e820_ext(u64 phys_addr, u32 data_len)
entries = sdata->len / sizeof(struct e820entry);
extmap = (struct e820entry *)(sdata->data);
__append_e820_map(extmap, entries);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map(e820.map, E820_X_MAX, &e820.nr_map);
early_iounmap(sdata, data_len);
printk(KERN_INFO "e820: extended physical RAM map:\n");
e820_print_map("extended");
@@ -901,7 +901,7 @@ void __init finish_e820_parsing(void)
if (userdef) {
u32 nr = e820.nr_map;
- if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr) < 0)
+ if (sanitize_e820_map(e820.map, E820_X_MAX, &nr) < 0)
early_panic("Invalid user supplied memory map");
e820.nr_map = nr;
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index bc4a088..281caa2 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -372,7 +372,7 @@ static void __init intel_graphics_stolen(int num, int slot, int func)
/* Mark this space as reserved */
e820_add_region(start, size, E820_RESERVED);
sanitize_e820_map(e820.map,
- ARRAY_SIZE(e820.map),
+ E820_X_MAX,
&e820.nr_map);
}
return;
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index cb233bc..c734467 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -472,7 +472,7 @@ static void __init e820_reserve_setup_data(void)
if (!found)
return;
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map(e820.map, E820_X_MAX, &e820.nr_map);
memcpy(&e820_saved, &e820, sizeof(struct e820map));
printk(KERN_INFO "extended physical RAM map:\n");
e820_print_map("reserve setup_data");
@@ -770,7 +770,7 @@ static void __init trim_bios_range(void)
*/
e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map(e820.map, E820_X_MAX, &e820.nr_map);
}
/* called before trim_bios_range() to spare extra sanitize */
@@ -1015,7 +1015,7 @@ void __init setup_arch(char **cmdline_p)
if (ppro_with_ram_bug()) {
e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
E820_RESERVED);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map(e820.map, E820_X_MAX, &e820.nr_map);
printk(KERN_INFO "fixed physical RAM map:\n");
e820_print_map("bad_ppro");
}
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 92c0234..2e0fdcc 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -367,7 +367,7 @@ static void __init do_add_efi_memmap(void)
}
e820_add_region(start, size, e820_type);
}
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map(e820.map, E820_X_MAX, &e820.nr_map);
}
int __init efi_memblock_x86_reserve_range(void)
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 68c054f..10550ff 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -485,7 +485,7 @@ char * __init xen_memory_setup(void)
memblock_reserve(__pa(xen_start_info->mfn_list),
xen_start_info->pt_base - xen_start_info->mfn_list);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map(e820.map, E820_X_MAX, &e820.nr_map);
return "Xen";
}
--
1.7.1
--
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