7 files changed, 5 insertions, 111 deletions
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 9059e3905887..d2e4a3330336 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -27,6 +27,7 @@ config HEXAGON
 	select HAVE_ARCH_TRACEHOOK
 	select NO_IOPORT
 	select GENERIC_IOMAP
+	select GENERIC_SMP_IDLE_THREAD
 	# mostly generic routines, with some accelerated ones
 	---help---
 	  Qualcomm Hexagon is a processor architecture designed for high
diff --git a/arch/hexagon/Makefile b/arch/hexagon/Makefile
index 0c4de8790fd5..e27d030846ae 100644
--- a/arch/hexagon/Makefile
+++ b/arch/hexagon/Makefile
@@ -45,8 +45,7 @@ KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 libs-y += $(LIBGCC)
 
-head-y := arch/hexagon/kernel/head.o \
-	arch/hexagon/kernel/init_task.o
+head-y := arch/hexagon/kernel/head.o
 
 core-y += arch/hexagon/kernel/ \
 	arch/hexagon/mm/ \
diff --git a/arch/hexagon/include/asm/thread_info.h b/arch/hexagon/include/asm/thread_info.h
index 9c2934ff5756..4f936a7ee847 100644
--- a/arch/hexagon/include/asm/thread_info.h
+++ b/arch/hexagon/include/asm/thread_info.h
@@ -31,15 +31,7 @@
 
 #define THREAD_SHIFT		12
 #define THREAD_SIZE		(1<<THREAD_SHIFT)
-
-#if THREAD_SHIFT >= PAGE_SHIFT
 #define THREAD_SIZE_ORDER	(THREAD_SHIFT - PAGE_SHIFT)
-#else  /*  don't use standard allocator  */
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-extern struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node);
-extern void free_thread_info(struct thread_info *ti);
-#endif
-
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile
index 3689f3754d09..536aec093e62 100644
--- a/arch/hexagon/kernel/Makefile
+++ b/arch/hexagon/kernel/Makefile
@@ -1,4 +1,4 @@
-extra-y := head.o vmlinux.lds init_task.o
+extra-y := head.o vmlinux.lds
 
 obj-$(CONFIG_SMP) += smp.o topology.o
 
diff --git a/arch/hexagon/kernel/init_task.c b/arch/hexagon/kernel/init_task.c
deleted file mode 100644
index 73283d3edf09..000000000000
--- a/arch/hexagon/kernel/init_task.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Init task definition
- *
- * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#include <linux/mm.h>
-#include <linux/module.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.
- */
-union thread_union init_thread_union
-	__attribute__((__section__(".data.init_task"),
-		__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/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index ff02821bfb7e..af51de63b835 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -234,43 +234,6 @@ unsigned long get_wchan(struct task_struct *p)
 }
 
 /*
- * Borrowed from PowerPC -- basically allow smaller kernel stacks if we
- * go crazy with the page sizes.
- */
-#if THREAD_SHIFT < PAGE_SHIFT
-
-static struct kmem_cache *thread_info_cache;
-
-struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node)
-{
-	struct thread_info *ti;
-
-	ti = kmem_cache_alloc_node(thread_info_cache, GFP_KERNEL, node);
-	if (unlikely(ti == NULL))
-		return NULL;
-#ifdef CONFIG_DEBUG_STACK_USAGE
-	memset(ti, 0, THREAD_SIZE);
-#endif
-	return ti;
-}
-
-void free_thread_info(struct thread_info *ti)
-{
-	kmem_cache_free(thread_info_cache, ti);
-}
-
-/*  Weak symbol; called by init/main.c  */
-
-void thread_info_cache_init(void)
-{
-	thread_info_cache = kmem_cache_create("thread_info", THREAD_SIZE,
-					      THREAD_SIZE, 0, NULL);
-	BUG_ON(thread_info_cache == NULL);
-}
-
-#endif /* THREAD_SHIFT < PAGE_SHIFT */
-
-/*
  * Required placeholder.
  */
 int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 1298141874a3..f7264621e58d 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -196,18 +196,11 @@ void __cpuinit start_secondary(void)
  * maintains control until "cpu_online(cpu)" is set.
  */
 
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
 {
-	struct task_struct *idle;
-	struct thread_info *thread;
+	struct thread_info *thread = (struct thread_info *)idle->stack;
 	void *stack_start;
 
-	/*  Create new init task for the CPU  */
-	idle = fork_idle(cpu);
-	if (IS_ERR(idle))
-		panic(KERN_ERR "fork_idle failed\n");
-
-	thread = (struct thread_info *)idle->stack;
 	thread->cpu = cpu;
 
 	/*  Boot to the head.  */