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authorHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>2007-10-19 20:35:02 +0200
committerThomas Gleixner <tglx@linutronix.de>2007-10-19 20:35:02 +0200
commit7778887880d278c23dc0975210df0381c878ae1e (patch)
tree4c286d6a8d6467eaea9424b283b634934de02f87
parentaf93ebc0b3ed8cdf93a6ed4bc1fab548f8059d0a (diff)
x86: merge init_task_32/64.c
Merge init_task_32/64.c. Move 64bit per cpu data orig_ist to setup64.c. [ mingo: fixed checkpatch trivialities. ] Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/i386/Makefile2
-rw-r--r--arch/x86/kernel/Makefile_322
-rw-r--r--arch/x86/kernel/Makefile_642
-rw-r--r--arch/x86/kernel/init_task.c (renamed from arch/x86/kernel/init_task_32.c)11
-rw-r--r--arch/x86/kernel/init_task_64.c54
-rw-r--r--arch/x86/kernel/setup64.c6
-rw-r--r--arch/x86_64/Makefile2
7 files changed, 16 insertions, 63 deletions
diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index d82f11de60ce..b88e47ca3032 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -102,7 +102,7 @@ core-$(CONFIG_XEN) += arch/x86/xen/
# default subarch .h files
mflags-y += -Iinclude/asm-x86/mach-default
-head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task_32.o
+head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task.o
libs-y += arch/x86/lib/
core-y += arch/x86/kernel/ \
diff --git a/arch/x86/kernel/Makefile_32 b/arch/x86/kernel/Makefile_32
index a3fa11f8f460..69990f0ba86e 100644
--- a/arch/x86/kernel/Makefile_32
+++ b/arch/x86/kernel/Makefile_32
@@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
-extra-y := head_32.o init_task_32.o vmlinux.lds
+extra-y := head_32.o init_task.o vmlinux.lds
obj-y := process_32.o signal_32.o entry_32.o traps_32.o irq_32.o \
ptrace_32.o time_32.o ioport_32.o ldt_32.o setup_32.o i8259_32.o sys_i386_32.o \
diff --git a/arch/x86/kernel/Makefile_64 b/arch/x86/kernel/Makefile_64
index 43da66213a47..2fc3d3f2c27e 100644
--- a/arch/x86/kernel/Makefile_64
+++ b/arch/x86/kernel/Makefile_64
@@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
-extra-y := head_64.o head64.o init_task_64.o vmlinux.lds
+extra-y := head_64.o head64.o init_task.o vmlinux.lds
EXTRA_AFLAGS := -traditional
obj-y := process_64.o signal_64.o entry_64.o traps_64.o irq_64.o \
ptrace_64.o time_64.o ioport_64.o ldt_64.o setup_64.o i8259_64.o sys_x86_64.o \
diff --git a/arch/x86/kernel/init_task_32.c b/arch/x86/kernel/init_task.c
index d26fc063a760..468c9c437842 100644
--- a/arch/x86/kernel/init_task_32.c
+++ b/arch/x86/kernel/init_task.c
@@ -15,7 +15,6 @@ static struct files_struct init_files = INIT_FILES;
static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
struct mm_struct init_mm = INIT_MM(init_mm);
-
EXPORT_SYMBOL(init_mm);
/*
@@ -25,7 +24,7 @@ EXPORT_SYMBOL(init_mm);
* way process stacks are handled. This is done by having a special
* "init_task" linker map entry..
*/
-union thread_union init_thread_union
+union thread_union init_thread_union
__attribute__((__section__(".data.init_task"))) =
{ INIT_THREAD_INFO(init_task) };
@@ -35,12 +34,14 @@ union thread_union init_thread_union
* All other task structs will be allocated on slabs in fork.c
*/
struct task_struct init_task = INIT_TASK(init_task);
-
EXPORT_SYMBOL(init_task);
/*
* per-CPU TSS segments. Threads are completely 'soft' on Linux,
- * no more per-task TSS's.
- */
+ * no more per-task TSS's. The TSS size is kept cacheline-aligned
+ * so they are allowed to end up in the .data.cacheline_aligned
+ * section. Since TSS's are completely CPU-local, we want them
+ * on exact cacheline boundaries, to eliminate cacheline ping-pong.
+ */
DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS;
diff --git a/arch/x86/kernel/init_task_64.c b/arch/x86/kernel/init_task_64.c
deleted file mode 100644
index 4ff33d4f8551..000000000000
--- a/arch/x86/kernel/init_task_64.c
+++ /dev/null
@@ -1,54 +0,0 @@
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/desc.h>
-
-static struct fs_struct init_fs = INIT_FS;
-static struct files_struct init_files = INIT_FILES;
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-struct mm_struct init_mm = INIT_MM(init_mm);
-
-EXPORT_SYMBOL(init_mm);
-
-/*
- * Initial task structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union
- __attribute__((__section__(".data.init_task"))) =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-/*
- * per-CPU TSS segments. Threads are completely 'soft' on Linux,
- * no more per-task TSS's. The TSS size is kept cacheline-aligned
- * so they are allowed to end up in the .data.cacheline_aligned
- * section. Since TSS's are completely CPU-local, we want them
- * on exact cacheline boundaries, to eliminate cacheline ping-pong.
- */
-DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS;
-
-/* Copies of the original ist values from the tss are only accessed during
- * debugging, no special alignment required.
- */
-DEFINE_PER_CPU(struct orig_ist, orig_ist);
-
-#define ALIGN_TO_4K __attribute__((section(".data.init_task")))
diff --git a/arch/x86/kernel/setup64.c b/arch/x86/kernel/setup64.c
index ba9188235057..e11886e8d8ca 100644
--- a/arch/x86/kernel/setup64.c
+++ b/arch/x86/kernel/setup64.c
@@ -185,6 +185,12 @@ void __cpuinit check_efer(void)
unsigned long kernel_eflags;
/*
+ * Copies of the original ist values from the tss are only accessed during
+ * debugging, no special alignment required.
+ */
+DEFINE_PER_CPU(struct orig_ist, orig_ist);
+
+/*
* cpu_init() initializes state that is per-CPU. Some data is already
* initialized (naturally) in the bootstrap process, such as the GDT
* and IDT. We reload them nevertheless, this function acts as a
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile
index f48d862397fb..6d89ab762ffc 100644
--- a/arch/x86_64/Makefile
+++ b/arch/x86_64/Makefile
@@ -74,7 +74,7 @@ KBUILD_CFLAGS += $(cflags-y)
CFLAGS_KERNEL += $(cflags-kernel-y)
KBUILD_AFLAGS += -m64
-head-y := arch/x86/kernel/head_64.o arch/x86/kernel/head64.o arch/x86/kernel/init_task_64.o
+head-y := arch/x86/kernel/head_64.o arch/x86/kernel/head64.o arch/x86/kernel/init_task.o
libs-y += arch/x86/lib/
core-y += arch/x86/kernel/ \