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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-05-03 09:02:55 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-05-05 13:00:24 +0200 |
| commit | 957b369c3d35d73e1d0c3e9d21db791e58984cbb (patch) | |
| tree | 01e6ad2e55b8563f1150c5b32181e284fcc0836f | |
| parent | 16caadb8c8f8461b853bd3a310d7730cf5a0aec4 (diff) | |
| download | op-kernel-dev-957b369c3d35d73e1d0c3e9d21db791e58984cbb.zip op-kernel-dev-957b369c3d35d73e1d0c3e9d21db791e58984cbb.tar.gz | |
mips: Use generic init_task
Same code. Use the generic version. The special Makefile treatment is
pointless anyway as init_task.o contains only data which is handled by
the linker script. So no point on being treated like head text.
Make the linker script align the task on THREAD_SIZE and not on
PAGE_SIZE, as PAGE_SIZE might be smaller than THREAD_SIZE.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Link: http://lkml.kernel.org/r/20120503085034.941344764@linutronix.de
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/init_task.c | 35 | ||||
| -rw-r--r-- | arch/mips/kernel/vmlinux.lds.S | 2 |
5 files changed, 4 insertions, 38 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 186fc8c..d6c7890 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -30,6 +30,7 @@ config MIPS select HAVE_MEMBLOCK_NODE_MAP select ARCH_DISCARD_MEMBLOCK select GENERIC_SMP_IDLE_THREAD + select HAVE_GENERIC_INIT_TASK menu "Machine selection" diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 4fedf5a..76017c2 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -235,7 +235,7 @@ endif OBJCOPYFLAGS += --remove-section=.reginfo -head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o +head-y := arch/mips/kernel/head.o libs-y += arch/mips/lib/ diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 0c6877e..fdaf65e 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -2,7 +2,7 @@ # Makefile for the Linux/MIPS kernel. # -extra-y := head.o init_task.o vmlinux.lds +extra-y := head.o vmlinux.lds obj-y += cpu-probe.o branch.o entry.o genex.o irq.o process.o \ ptrace.o reset.o setup.o signal.o syscall.o \ diff --git a/arch/mips/kernel/init_task.c b/arch/mips/kernel/init_task.c deleted file mode 100644 index 5f9a762..0000000 --- a/arch/mips/kernel/init_task.c +++ /dev/null @@ -1,35 +0,0 @@ -#include <linux/mm.h> -#include <linux/export.h> -#include <linux/sched.h> -#include <linux/init_task.h> -#include <linux/fs.h> -#include <linux/mqueue.h> - -#include <asm/thread_info.h> -#include <asm/uaccess.h> -#include <asm/pgtable.h> - -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* - * Initial thread structure. - * - * We need to make sure that this is 8192-byte aligned due to the - * way process stacks are handled. This is done by making sure - * the linker maps this in the .text segment right after head.S, - * and making head.S ensure the proper alignment. - * - * The things we do for performance.. - */ -union thread_union init_thread_union __init_task_data - __attribute__((__aligned__(THREAD_SIZE))) = - { 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); diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 924da5e..e6772f2 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -72,7 +72,7 @@ SECTIONS .data : { /* Data */ . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */ - INIT_TASK_DATA(PAGE_SIZE) + INIT_TASK_DATA(THREAD_SIZE) NOSAVE_DATA CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) |
