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| author | Tony Luck <tony.luck@intel.com> | 2005-06-15 14:06:48 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-06-15 14:06:48 -0700 |
| commit | f2cbb4f01936a3e4225692e03b084b78c56d386d (patch) | |
| tree | f89f3d8baa250589a38a4dd2df56f84cddae3c76 /arch/arm/kernel/process.c | |
| parent | 325a479c4c110db278ef3361460a48c4093252cc (diff) | |
| parent | 1016888fb69662936b32ab767c7419a3be9a69d3 (diff) | |
| download | blackbird-op-linux-f2cbb4f01936a3e4225692e03b084b78c56d386d.tar.gz blackbird-op-linux-f2cbb4f01936a3e4225692e03b084b78c56d386d.zip | |
Auto merge with /home/aegl/GIT/linus
Diffstat (limited to 'arch/arm/kernel/process.c')
| -rw-r--r-- | arch/arm/kernel/process.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 26eacd3e5def..8f146a4b4752 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -256,8 +256,6 @@ static unsigned long *thread_info_head; static unsigned int nr_thread_info; #define EXTRA_TASK_STRUCT 4 -#define ll_alloc_task_struct() ((struct thread_info *) __get_free_pages(GFP_KERNEL,1)) -#define ll_free_task_struct(p) free_pages((unsigned long)(p),1) struct thread_info *alloc_thread_info(struct task_struct *task) { @@ -274,17 +272,16 @@ struct thread_info *alloc_thread_info(struct task_struct *task) } if (!thread) - thread = ll_alloc_task_struct(); + thread = (struct thread_info *) + __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER); -#ifdef CONFIG_MAGIC_SYSRQ +#ifdef CONFIG_DEBUG_STACK_USAGE /* * The stack must be cleared if you want SYSRQ-T to * give sensible stack usage information */ - if (thread) { - char *p = (char *)thread; - memzero(p+KERNEL_STACK_SIZE, KERNEL_STACK_SIZE); - } + if (thread) + memzero(thread, THREAD_SIZE); #endif return thread; } @@ -297,7 +294,7 @@ void free_thread_info(struct thread_info *thread) thread_info_head = p; nr_thread_info += 1; } else - ll_free_task_struct(thread); + free_pages((unsigned long)thread, THREAD_SIZE_ORDER); } /* @@ -350,7 +347,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start, struct thread_info *thread = p->thread_info; struct pt_regs *childregs; - childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_SIZE - 8)) - 1; + childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_START_SP)) - 1; *childregs = *regs; childregs->ARM_r0 = 0; childregs->ARM_sp = stack_start; @@ -447,15 +444,17 @@ EXPORT_SYMBOL(kernel_thread); unsigned long get_wchan(struct task_struct *p) { unsigned long fp, lr; - unsigned long stack_page; + unsigned long stack_start, stack_end; int count = 0; if (!p || p == current || p->state == TASK_RUNNING) return 0; - stack_page = 4096 + (unsigned long)p->thread_info; + stack_start = (unsigned long)(p->thread_info + 1); + stack_end = ((unsigned long)p->thread_info) + THREAD_SIZE; + fp = thread_saved_fp(p); do { - if (fp < stack_page || fp > 4092+stack_page) + if (fp < stack_start || fp > stack_end) return 0; lr = pc_pointer (((unsigned long *)fp)[-1]); if (!in_sched_functions(lr)) |
