diff options
Diffstat (limited to 'arch/hexagon')
| -rw-r--r-- | arch/hexagon/Kconfig | 1 | ||||
| -rw-r--r-- | arch/hexagon/Makefile | 3 | ||||
| -rw-r--r-- | arch/hexagon/include/asm/thread_info.h | 8 | ||||
| -rw-r--r-- | arch/hexagon/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/hexagon/kernel/dma.c | 1 | ||||
| -rw-r--r-- | arch/hexagon/kernel/init_task.c | 54 | ||||
| -rw-r--r-- | arch/hexagon/kernel/process.c | 43 | ||||
| -rw-r--r-- | arch/hexagon/kernel/ptrace.c | 1 | ||||
| -rw-r--r-- | arch/hexagon/kernel/smp.c | 19 | ||||
| -rw-r--r-- | arch/hexagon/kernel/time.c | 1 | ||||
| -rw-r--r-- | arch/hexagon/kernel/vdso.c | 1 |
11 files changed, 19 insertions, 115 deletions
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index 3126fc6..22615dd 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 0c4de87..e27d030 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 += $(LIBGCC) -head-y := arch/hexagon/kernel/head.o \ - arch/hexagon/kernel/init_task.o +head-y := arch/hexagon/kernel/head.o core-y += arch/hexagon/kernel/ \ arch/hexagon/mm/ \ diff --git a/arch/hexagon/include/asm/thread_info.h b/arch/hexagon/include/asm/thread_info.h index 9c2934f..4f936a7 100644 --- a/arch/hexagon/include/asm/thread_info.h +++ b/arch/hexagon/include/asm/thread_info.h @@ -31,15 +31,7 @@ #define THREAD_SHIFT 12 #define THREAD_SIZE (1<<THREAD_SHIFT) - -#if THREAD_SHIFT >= PAGE_SHIFT #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) -#else /* don't use standard allocator */ -#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR -extern struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node); -extern void free_thread_info(struct thread_info *ti); -#endif - #ifndef __ASSEMBLY__ diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile index 3689f37..536aec0 100644 --- a/arch/hexagon/kernel/Makefile +++ b/arch/hexagon/kernel/Makefile @@ -1,4 +1,4 @@ -extra-y := head.o vmlinux.lds init_task.o +extra-y := head.o vmlinux.lds obj-$(CONFIG_SMP) += smp.o topology.o diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c index 3730221..0f2367c 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 73283d3..0000000 --- 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 18c4f0b..af51de6 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 32342de..96c3b2c 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 9b44a9e..f726462 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 6bee15c..5d9b33b 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 f212a45..5d39f42 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> |
