diff options
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/Kconfig | 4 | ||||
| -rw-r--r-- | arch/sh/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/include/asm/processor.h | 5 | ||||
| -rw-r--r-- | arch/sh/include/asm/thread_info.h | 11 | ||||
| -rw-r--r-- | arch/sh/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/idle.c | 20 | ||||
| -rw-r--r-- | arch/sh/kernel/init_task.c | 30 | ||||
| -rw-r--r-- | arch/sh/kernel/process.c | 46 | ||||
| -rw-r--r-- | arch/sh/kernel/smp.c | 14 |
9 files changed, 7 insertions, 127 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index ff9e033ce62..04a8cb4700a 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -28,6 +28,7 @@ config SUPERH select RTC_LIB select GENERIC_ATOMIC64 select GENERIC_IRQ_SHOW + select GENERIC_SMP_IDLE_THREAD help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast @@ -152,9 +153,6 @@ config ARCH_NO_VIRT_TO_BUS config ARCH_HAS_DEFAULT_IDLE def_bool y -config ARCH_HAS_CPU_IDLE_WAIT - def_bool y - config NO_IOPORT def_bool !PCI depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN diff --git a/arch/sh/Makefile b/arch/sh/Makefile index 3fc0f413777..e14a676a0c7 100644 --- a/arch/sh/Makefile +++ b/arch/sh/Makefile @@ -124,7 +124,7 @@ endif export ld-bfd BITS -head-y := arch/sh/kernel/init_task.o arch/sh/kernel/head_$(BITS).o +head-y := arch/sh/kernel/head_$(BITS).o core-y += arch/sh/kernel/ arch/sh/mm/ arch/sh/boards/ core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/ diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h index a229c393826..6dbc1be28a0 100644 --- a/arch/sh/include/asm/processor.h +++ b/arch/sh/include/asm/processor.h @@ -85,10 +85,6 @@ struct sh_cpuinfo { struct tlb_info itlb; struct tlb_info dtlb; -#ifdef CONFIG_SMP - struct task_struct *idle; -#endif - unsigned int phys_bits; unsigned long flags; } __attribute__ ((aligned(L1_CACHE_BYTES))); @@ -102,7 +98,6 @@ extern struct sh_cpuinfo cpu_data[]; #define cpu_relax() barrier() void default_idle(void); -void cpu_idle_wait(void); void stop_this_cpu(void *); /* Forward decl */ diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h index 20ee40af16e..b6902061d4d 100644 --- a/arch/sh/include/asm/thread_info.h +++ b/arch/sh/include/asm/thread_info.h @@ -88,22 +88,13 @@ static inline struct thread_info *current_thread_info(void) return ti; } -/* thread information allocation */ -#if THREAD_SHIFT >= PAGE_SHIFT - #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) -#endif - -extern struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node); -extern void free_thread_info(struct thread_info *ti); extern void arch_task_cache_init(void); -#define arch_task_cache_init arch_task_cache_init extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); +extern void arch_release_task_struct(struct task_struct *tsk); extern void init_thread_xstate(void); -#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR - #endif /* __ASSEMBLY__ */ /* diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile index 77f7ae1d464..88571ff8eee 100644 --- a/arch/sh/kernel/Makefile +++ b/arch/sh/kernel/Makefile @@ -2,7 +2,7 @@ # Makefile for the Linux/SuperH kernel. # -extra-y := head_$(BITS).o init_task.o vmlinux.lds +extra-y := head_$(BITS).o vmlinux.lds ifdef CONFIG_FUNCTION_TRACER # Do not profile debug and lowlevel utilities diff --git a/arch/sh/kernel/idle.c b/arch/sh/kernel/idle.c index ee226e20c20..0c910163caa 100644 --- a/arch/sh/kernel/idle.c +++ b/arch/sh/kernel/idle.c @@ -132,10 +132,6 @@ void __init select_idle_routine(void) pm_idle = poll_idle; } -static void do_nothing(void *unused) -{ -} - void stop_this_cpu(void *unused) { local_irq_disable(); @@ -144,19 +140,3 @@ void stop_this_cpu(void *unused) for (;;) cpu_sleep(); } - -/* - * cpu_idle_wait - Used to ensure that all the CPUs discard old value of - * pm_idle and update to new pm_idle value. Required while changing pm_idle - * handler on SMP systems. - * - * Caller must have changed pm_idle to the new value before the call. Old - * pm_idle value will not be used by any CPU after the return of this function. - */ -void cpu_idle_wait(void) -{ - smp_mb(); - /* kick all the CPUs so that they exit out of pm_idle */ - smp_call_function(do_nothing, NULL, 1); -} -EXPORT_SYMBOL_GPL(cpu_idle_wait); diff --git a/arch/sh/kernel/init_task.c b/arch/sh/kernel/init_task.c deleted file mode 100644 index 11f2ea556a6..00000000000 --- a/arch/sh/kernel/init_task.c +++ /dev/null @@ -1,30 +0,0 @@ -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/init_task.h> -#include <linux/mqueue.h> -#include <linux/fs.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); -struct pt_regs fake_swapper_regs; -/* - * 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 having a special - * "init_task" linker map entry.. - */ -union thread_union init_thread_union __init_task_data = - { 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/sh/kernel/process.c b/arch/sh/kernel/process.c index 325f98b1736..f2621abdf01 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -29,52 +29,10 @@ void free_thread_xstate(struct task_struct *tsk) } } -#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; -#ifdef CONFIG_DEBUG_STACK_USAGE - gfp_t mask = GFP_KERNEL | __GFP_ZERO; -#else - gfp_t mask = GFP_KERNEL; -#endif - - ti = kmem_cache_alloc_node(thread_info_cache, mask, node); - return ti; -} - -void free_thread_info(struct thread_info *ti) -{ - free_thread_xstate(ti->task); - kmem_cache_free(thread_info_cache, ti); -} - -void thread_info_cache_init(void) -{ - thread_info_cache = kmem_cache_create("thread_info", THREAD_SIZE, - THREAD_SIZE, SLAB_PANIC, NULL); -} -#else -struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node) -{ -#ifdef CONFIG_DEBUG_STACK_USAGE - gfp_t mask = GFP_KERNEL | __GFP_ZERO; -#else - gfp_t mask = GFP_KERNEL; -#endif - struct page *page = alloc_pages_node(node, mask, THREAD_SIZE_ORDER); - - return page ? page_address(page) : NULL; -} - -void free_thread_info(struct thread_info *ti) +void arch_release_task_struct(struct task_struct *tsk) { - free_thread_xstate(ti->task); - free_pages((unsigned long)ti, THREAD_SIZE_ORDER); + free_thread_xstate(tsk); } -#endif /* THREAD_SHIFT < PAGE_SHIFT */ void arch_task_cache_init(void) { diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index eaebdf6a5c7..b86e9ca7945 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -220,22 +220,10 @@ extern struct { void *thread_info; } stack_start; -int __cpuinit __cpu_up(unsigned int cpu) +int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tsk) { - struct task_struct *tsk; unsigned long timeout; - tsk = cpu_data[cpu].idle; - if (!tsk) { - tsk = fork_idle(cpu); - if (IS_ERR(tsk)) { - pr_err("Failed forking idle task for cpu %d\n", cpu); - return PTR_ERR(tsk); - } - - cpu_data[cpu].idle = tsk; - } - per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; /* Fill in data in head.S for secondary cpus */ |