From: "Jan Beulich" <jbeulich@novell.com>
To: <mingo@elte.hu>, <tglx@linutronix.de>, <hpa@zytor.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: [PATCH] i386: simplify alloc_low_page()
Date: Tue, 16 Dec 2008 11:42:45 +0000 [thread overview]
Message-ID: <4947A245.76E4.0078.0@novell.com> (raw)
Neither of the callers really needs the physical address this function
returns, so eliminate the pointless argument.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
---
arch/x86/mm/init_32.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
--- linux-2.6.28-rc8/arch/x86/mm/init_32.c 2008-12-11 14:36:52.000000000 +0100
+++ 2.6.28-rc8-i386-alloc-low-page/arch/x86/mm/init_32.c 2008-10-13 16:16:13.000000000 +0200
@@ -67,7 +67,7 @@ static unsigned long __meminitdata table
static int __initdata after_init_bootmem;
-static __init void *alloc_low_page(unsigned long *phys)
+static __init void *alloc_low_page(void)
{
unsigned long pfn = table_end++;
void *adr;
@@ -77,7 +77,6 @@ static __init void *alloc_low_page(unsig
adr = __va(pfn * PAGE_SIZE);
memset(adr, 0, PAGE_SIZE);
- *phys = pfn * PAGE_SIZE;
return adr;
}
@@ -92,12 +91,11 @@ static pmd_t * __init one_md_table_init(
pmd_t *pmd_table;
#ifdef CONFIG_X86_PAE
- unsigned long phys;
if (!(pgd_val(*pgd) & _PAGE_PRESENT)) {
if (after_init_bootmem)
pmd_table = (pmd_t *)alloc_bootmem_low_pages(PAGE_SIZE);
else
- pmd_table = (pmd_t *)alloc_low_page(&phys);
+ pmd_table = (pmd_t *)alloc_low_page();
paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT);
set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
pud = pud_offset(pgd, 0);
@@ -126,10 +124,8 @@ static pte_t * __init one_page_table_ini
if (!page_table)
page_table =
(pte_t *)alloc_bootmem_low_pages(PAGE_SIZE);
- } else {
- unsigned long phys;
- page_table = (pte_t *)alloc_low_page(&phys);
- }
+ } else
+ page_table = (pte_t *)alloc_low_page();
paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT);
set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
next reply other threads:[~2008-12-16 11:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-16 11:42 Jan Beulich [this message]
2008-12-16 17:42 ` Ingo Molnar
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