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[PATCH] ppc64: Updated Olof misc updates 3/3

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Replace some of the hard-coded constants with PAGE_SIZE/SHIFT/ORDER where
appropriate.

Likewise, in a couple of places it doesn't make sense to base some
allocations on page size when all that's required is a constant 4K,
etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Olof Johansson 2005-09-20 13:47:41 +10:00 committed by Paul Mackerras
parent d0035c62d9
commit 637a6ff6ce
6 changed files with 18 additions and 13 deletions
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2
arch/ppc64/kernel/head.S
View File

@ -1992,7 +1992,7 @@ _GLOBAL(smp_release_cpus)
*/
.section ".bss"
.align 12
.align PAGE_SHIFT
.globl empty_zero_page
empty_zero_page:

2
arch/ppc64/kernel/misc.S
View File

@ -329,7 +329,7 @@ _GLOBAL(__flush_dcache_icache)
/* Flush the dcache */
ld r7,PPC64_CACHES@toc(r2)
clrrdi r3,r3,12 /* Page align */
clrrdi r3,r3,PAGE_SHIFT /* Page align */
lwz r4,DCACHEL1LINESPERPAGE(r7) /* Get # dcache lines per page */
lwz r5,DCACHEL1LINESIZE(r7) /* Get dcache line size */
mr r6,r3

16
arch/ppc64/kernel/vmlinux.lds.S
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@ -1,3 +1,4 @@
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
OUTPUT_ARCH(powerpc:common64)
@ -17,7 +18,7 @@ SECTIONS
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
_etext = .;
}
@ -43,7 +44,7 @@ SECTIONS
/* will be freed after init */
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
__init_begin = .;
.init.text : {
@ -83,7 +84,7 @@ SECTIONS
SECURITY_INIT
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
@ -96,18 +97,21 @@ SECTIONS
__per_cpu_end = .;
}
. = ALIGN(PAGE_SIZE);
. = ALIGN(16384);
__init_end = .;
/* freed after init ends here */
/* Read/write sections */
. = ALIGN(PAGE_SIZE);
. = ALIGN(16384);
/* The initial task and kernel stack */
.data.init_task : {
*(.data.init_task)
}
. = ALIGN(PAGE_SIZE);
.data.page_aligned : {
*(.data.page_aligned)
}
@ -129,18 +133,18 @@ SECTIONS
__toc_start = .;
*(.got)
*(.toc)
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
_edata = .;
}
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
.bss : {
__bss_start = .;
*(.bss)
__bss_stop = .;
}
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
_end = . ;
}

3
include/asm-ppc64/elf.h
View File

@ -5,6 +5,7 @@
#include <asm/ptrace.h>
#include <asm/cputable.h>
#include <asm/auxvec.h>
#include <asm/page.h>
/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE 0
@ -146,7 +147,7 @@ typedef elf_vrreg_t elf_vrregset_t32[ELF_NVRREG32];
#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#define ELF_EXEC_PAGESIZE PAGE_SIZE
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
use of this is to invoke "./ld.so someprog" to test out a new version of

2
include/asm-ppc64/mmu.h
View File

@ -30,7 +30,7 @@
/* Location of cpu0's segment table */
#define STAB0_PAGE 0x6
#define STAB0_PHYS_ADDR (STAB0_PAGE<<PAGE_SHIFT)
#define STAB0_PHYS_ADDR (STAB0_PAGE<<12)
#ifndef __ASSEMBLY__
extern char initial_stab[];

6
include/asm-ppc64/thread_info.h
View File

@ -54,9 +54,9 @@ struct thread_info {
/* thread information allocation */
#define THREAD_ORDER 2
#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
#define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER)
#define THREAD_SHIFT 14
#define THREAD_ORDER (THREAD_SHIFT - PAGE_SHIFT)
#define THREAD_SIZE (1 << THREAD_SHIFT)
#ifdef CONFIG_DEBUG_STACK_USAGE
#define alloc_thread_info(tsk) \
({ \