From 957b369c3d35d73e1d0c3e9d21db791e58984cbb Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 3 May 2012 09:02:55 +0000 Subject: [PATCH] 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 Cc: Ralf Baechle Link: http://lkml.kernel.org/r/20120503085034.941344764@linutronix.de --- arch/mips/Kconfig | 1 + arch/mips/Makefile | 2 +- arch/mips/kernel/Makefile | 2 +- arch/mips/kernel/init_task.c | 35 ---------------------------------- arch/mips/kernel/vmlinux.lds.S | 2 +- 5 files changed, 4 insertions(+), 38 deletions(-) delete mode 100644 arch/mips/kernel/init_task.c diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 186fc8cf9ee0..d6c78901e5f2 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 4fedf5a51d96..76017c25a9e6 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 0c6877ea9004..fdaf65e1a99d 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 5f9a76263c9a..000000000000 --- a/arch/mips/kernel/init_task.c +++ /dev/null @@ -1,35 +0,0 @@ -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -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 924da5eb7031..e6772f2cf3df 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)