summaryrefslogtreecommitdiff
path: root/arch/hexagon
diff options
context:
space:
mode:
Diffstat (limited to 'arch/hexagon')
-rw-r--r--arch/hexagon/Kconfig1
-rw-r--r--arch/hexagon/Makefile3
-rw-r--r--arch/hexagon/include/asm/thread_info.h8
-rw-r--r--arch/hexagon/kernel/Makefile2
-rw-r--r--arch/hexagon/kernel/dma.c1
-rw-r--r--arch/hexagon/kernel/init_task.c54
-rw-r--r--arch/hexagon/kernel/process.c43
-rw-r--r--arch/hexagon/kernel/ptrace.c1
-rw-r--r--arch/hexagon/kernel/smp.c19
-rw-r--r--arch/hexagon/kernel/time.c1
-rw-r--r--arch/hexagon/kernel/vdso.c1
11 files changed, 19 insertions, 115 deletions
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 3126fc68593c..22615dd02219 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -25,6 +25,7 @@ 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/dma.c b/arch/hexagon/kernel/dma.c
index 37302218ca4a..0f2367cc5493 100644
--- a/arch/hexagon/kernel/dma.c
+++ b/arch/hexagon/kernel/dma.c
@@ -22,6 +22,7 @@
#include <linux/bootmem.h>
#include <linux/genalloc.h>
#include <asm/dma-mapping.h>
+#include <linux/module.h>
struct dma_map_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);
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 18c4f0b0f4ba..af51de63b835 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -1,7 +1,7 @@
/*
* Process creation support for Hexagon
*
- * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2010-2012, 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
@@ -88,7 +88,7 @@ void (*idle_sleep)(void) = default_idle;
void cpu_idle(void)
{
while (1) {
- tick_nohz_stop_sched_tick(1);
+ tick_nohz_idle_enter();
local_irq_disable();
while (!need_resched()) {
idle_sleep();
@@ -97,7 +97,7 @@ void cpu_idle(void)
local_irq_disable();
}
local_irq_enable();
- tick_nohz_restart_sched_tick();
+ tick_nohz_idle_exit();
schedule();
}
}
@@ -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/ptrace.c b/arch/hexagon/kernel/ptrace.c
index 32342de1a79c..96c3b2c4dbad 100644
--- a/arch/hexagon/kernel/ptrace.c
+++ b/arch/hexagon/kernel/ptrace.c
@@ -28,6 +28,7 @@
#include <linux/ptrace.h>
#include <linux/regset.h>
#include <linux/user.h>
+#include <linux/elf.h>
#include <asm/user.h>
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 9b44a9e2d05a..f7264621e58d 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -1,7 +1,7 @@
/*
* SMP support for Hexagon
*
- * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2010-2012, 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
@@ -28,6 +28,7 @@
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/spinlock.h>
+#include <linux/cpu.h>
#include <asm/time.h> /* timer_interrupt */
#include <asm/hexagon_vm.h>
@@ -177,7 +178,12 @@ void __cpuinit start_secondary(void)
printk(KERN_INFO "%s cpu %d\n", __func__, current_thread_info()->cpu);
+ notify_cpu_starting(cpu);
+
+ ipi_call_lock();
set_cpu_online(cpu, true);
+ ipi_call_unlock();
+
local_irq_enable();
cpu_idle();
@@ -190,18 +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. */
diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c
index 6bee15c9c113..5d9b33b67935 100644
--- a/arch/hexagon/kernel/time.c
+++ b/arch/hexagon/kernel/time.c
@@ -28,6 +28,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/module.h>
#include <asm/timer-regs.h>
#include <asm/hexagon_vm.h>
diff --git a/arch/hexagon/kernel/vdso.c b/arch/hexagon/kernel/vdso.c
index f212a453b527..5d39f42f7085 100644
--- a/arch/hexagon/kernel/vdso.c
+++ b/arch/hexagon/kernel/vdso.c
@@ -21,6 +21,7 @@
#include <linux/err.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
+#include <linux/binfmts.h>
#include <asm/vdso.h>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-30 19:30:23 +0300