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-rw-r--r--arch/arm/kernel/Makefile2
-rw-r--r--arch/arm/kernel/asm-offsets.c8
-rw-r--r--arch/arm/kernel/dma-isa.c23
-rw-r--r--arch/arm/kernel/head-nommu.S6
-rw-r--r--arch/arm/kernel/head.S8
-rw-r--r--arch/arm/kernel/process.c37
-rw-r--r--arch/arm/kernel/setup.c8
7 files changed, 58 insertions, 34 deletions
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 2ce0e3a27a4..a601b8b55f3 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -29,7 +29,7 @@ ifneq ($(CONFIG_ARCH_EBSA110),y)
obj-y += io.o
endif
-head-y := head.o
+head-y := head$(MMUEXT).o
obj-$(CONFIG_DEBUG_LL) += debug.o
extra-y := $(head-y) init_task.o vmlinux.lds
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
index b324dcac1c5..396efba9bac 100644
--- a/arch/arm/kernel/asm-offsets.c
+++ b/arch/arm/kernel/asm-offsets.c
@@ -95,5 +95,13 @@ int main(void)
DEFINE(SYS_ERROR0, 0x9f0000);
BLANK();
DEFINE(SIZEOF_MACHINE_DESC, sizeof(struct machine_desc));
+ DEFINE(MACHINFO_TYPE, offsetof(struct machine_desc, nr));
+ DEFINE(MACHINFO_NAME, offsetof(struct machine_desc, name));
+ DEFINE(MACHINFO_PHYSIO, offsetof(struct machine_desc, phys_io));
+ DEFINE(MACHINFO_PGOFFIO, offsetof(struct machine_desc, io_pg_offst));
+ BLANK();
+ DEFINE(PROC_INFO_SZ, sizeof(struct proc_info_list));
+ DEFINE(PROCINFO_INITFUNC, offsetof(struct proc_info_list, __cpu_flush));
+ DEFINE(PROCINFO_MMUFLAGS, offsetof(struct proc_info_list, __cpu_mmu_flags));
return 0;
}
diff --git a/arch/arm/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c
index 03532769a97..0a3e9ad297d 100644
--- a/arch/arm/kernel/dma-isa.c
+++ b/arch/arm/kernel/dma-isa.c
@@ -143,12 +143,23 @@ static struct dma_ops isa_dma_ops = {
.residue = isa_get_dma_residue,
};
-static struct resource dma_resources[] = {
- { "dma1", 0x0000, 0x000f },
- { "dma low page", 0x0080, 0x008f },
- { "dma2", 0x00c0, 0x00df },
- { "dma high page", 0x0480, 0x048f }
-};
+static struct resource dma_resources[] = { {
+ .name = "dma1",
+ .start = 0x0000,
+ .end = 0x000f
+}, {
+ .name = "dma low page",
+ .start = 0x0080,
+ .end = 0x008f
+}, {
+ .name = "dma2",
+ .start = 0x00c0,
+ .end = 0x00df
+}, {
+ .name = "dma high page",
+ .start = 0x0480,
+ .end = 0x048f
+} };
void __init isa_init_dma(dma_t *dma)
{
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index b093ab8738b..adf62e5eaad 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -20,11 +20,10 @@
#include <asm/mach-types.h>
#include <asm/procinfo.h>
#include <asm/ptrace.h>
-#include <asm/constants.h>
+#include <asm/asm-offsets.h>
+#include <asm/thread_info.h>
#include <asm/system.h>
-#define PROCINFO_INITFUNC 12
-
/*
* Kernel startup entry point.
* ---------------------------
@@ -79,5 +78,6 @@ __after_proc_init:
mov pc, r13 @ clear the BSS and jump
@ to start_kernel
+ .ltorg
#include "head-common.S"
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 04b66a9328e..04f7344e356 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -24,14 +24,6 @@
#include <asm/thread_info.h>
#include <asm/system.h>
-#define PROCINFO_MMUFLAGS 8
-#define PROCINFO_INITFUNC 12
-
-#define MACHINFO_TYPE 0
-#define MACHINFO_PHYSIO 4
-#define MACHINFO_PGOFFIO 8
-#define MACHINFO_NAME 12
-
#define KERNEL_RAM_ADDR (PAGE_OFFSET + TEXT_OFFSET)
/*
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 1ff75cee4b0..7df6e1aaa32 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -264,8 +264,12 @@ void show_fpregs(struct user_fp *regs)
/*
* Task structure and kernel stack allocation.
*/
-static unsigned long *thread_info_head;
-static unsigned int nr_thread_info;
+struct thread_info_list {
+ unsigned long *head;
+ unsigned int nr;
+};
+
+static DEFINE_PER_CPU(struct thread_info_list, thread_info_list) = { NULL, 0 };
#define EXTRA_TASK_STRUCT 4
@@ -274,12 +278,15 @@ struct thread_info *alloc_thread_info(struct task_struct *task)
struct thread_info *thread = NULL;
if (EXTRA_TASK_STRUCT) {
- unsigned long *p = thread_info_head;
+ struct thread_info_list *th = &get_cpu_var(thread_info_list);
+ unsigned long *p = th->head;
if (p) {
- thread_info_head = (unsigned long *)p[0];
- nr_thread_info -= 1;
+ th->head = (unsigned long *)p[0];
+ th->nr -= 1;
}
+ put_cpu_var(thread_info_list);
+
thread = (struct thread_info *)p;
}
@@ -300,13 +307,19 @@ struct thread_info *alloc_thread_info(struct task_struct *task)
void free_thread_info(struct thread_info *thread)
{
- if (EXTRA_TASK_STRUCT && nr_thread_info < EXTRA_TASK_STRUCT) {
- unsigned long *p = (unsigned long *)thread;
- p[0] = (unsigned long)thread_info_head;
- thread_info_head = p;
- nr_thread_info += 1;
- } else
- free_pages((unsigned long)thread, THREAD_SIZE_ORDER);
+ if (EXTRA_TASK_STRUCT) {
+ struct thread_info_list *th = &get_cpu_var(thread_info_list);
+ if (th->nr < EXTRA_TASK_STRUCT) {
+ unsigned long *p = (unsigned long *)thread;
+ p[0] = (unsigned long)th->head;
+ th->head = p;
+ th->nr += 1;
+ put_cpu_var(thread_info_list);
+ return;
+ }
+ put_cpu_var(thread_info_list);
+ }
+ free_pages((unsigned long)thread, THREAD_SIZE_ORDER);
}
/*
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 8cff73e668b..9fc9af88c60 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -407,7 +407,7 @@ static void __init early_initrd(char **p)
}
__early_param("initrd=", early_initrd);
-static void __init add_memory(unsigned long start, unsigned long size)
+static void __init arm_add_memory(unsigned long start, unsigned long size)
{
/*
* Ensure that start/size are aligned to a page boundary.
@@ -445,7 +445,7 @@ static void __init early_mem(char **p)
if (**p == '@')
start = memparse(*p + 1, p);
- add_memory(start, size);
+ arm_add_memory(start, size);
}
__early_param("mem=", early_mem);
@@ -587,7 +587,7 @@ static int __init parse_tag_mem32(const struct tag *tag)
tag->u.mem.start, tag->u.mem.size / 1024);
return -EINVAL;
}
- add_memory(tag->u.mem.start, tag->u.mem.size);
+ arm_add_memory(tag->u.mem.start, tag->u.mem.size);
return 0;
}
@@ -807,7 +807,7 @@ static int __init topology_init(void)
{
int cpu;
- for_each_cpu(cpu)
+ for_each_possible_cpu(cpu)
register_cpu(&per_cpu(cpu_data, cpu).cpu, cpu, NULL);
return 0;