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[PATCH] s390: task_stack_page() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro 2006-01-12 01:05:50 -08:00 committed by Linus Torvalds
parent c7584fb6b4
commit 30af7120fe
4 changed files with 8 additions and 9 deletions
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9
arch/s390/kernel/process.c
View File

@ -153,7 +153,7 @@ void show_regs(struct pt_regs *regs)
{
struct task_struct *tsk = current;
printk("CPU: %d %s\n", tsk->thread_info->cpu, print_tainted());
printk("CPU: %d %s\n", task_thread_info(tsk)->cpu, print_tainted());
printk("Process %s (pid: %d, task: %p, ksp: %p)\n",
current->comm, current->pid, (void *) tsk,
(void *) tsk->thread.ksp);
@ -357,11 +357,10 @@ unsigned long get_wchan(struct task_struct *p)
unsigned long return_address;
int count;
if (!p || p == current || p->state == TASK_RUNNING || !p->thread_info)
if (!p || p == current || p->state == TASK_RUNNING || !task_stack_page(p))
return 0;
low = (struct stack_frame *) p->thread_info;
high = (struct stack_frame *)
((unsigned long) p->thread_info + THREAD_SIZE) - 1;
low = task_stack_page(p);
high = (struct stack_frame *) task_pt_regs(p);
sf = (struct stack_frame *) (p->thread.ksp & PSW_ADDR_INSN);
if (sf <= low || sf > high)
return 0;

2
arch/s390/kernel/smp.c
View File

@ -657,7 +657,7 @@ __cpu_up(unsigned int cpu)
idle = current_set[cpu];
cpu_lowcore = lowcore_ptr[cpu];
cpu_lowcore->kernel_stack = (unsigned long)
idle->thread_info + (THREAD_SIZE);
task_stack_page(idle) + (THREAD_SIZE);
sf = (struct stack_frame *) (cpu_lowcore->kernel_stack
- sizeof(struct pt_regs)
- sizeof(struct stack_frame));

4
arch/s390/kernel/traps.c
View File

@ -136,8 +136,8 @@ void show_trace(struct task_struct *task, unsigned long * stack)
sp = __show_trace(sp, S390_lowcore.async_stack - ASYNC_SIZE,
S390_lowcore.async_stack);
if (task)
__show_trace(sp, (unsigned long) task->thread_info,
(unsigned long) task->thread_info + THREAD_SIZE);
__show_trace(sp, (unsigned long) task_stack_page(task),
(unsigned long) task_stack_page(task) + THREAD_SIZE);
else
__show_trace(sp, S390_lowcore.thread_info,
S390_lowcore.thread_info + THREAD_SIZE);

2
include/asm-s390/processor.h
View File

@ -192,7 +192,7 @@ extern void show_trace(struct task_struct *task, unsigned long *sp);
unsigned long get_wchan(struct task_struct *p);
#define task_pt_regs(tsk) ((struct pt_regs *) \
((void *)(tsk)->thread_info + THREAD_SIZE) - 1)
(task_stack_page(tsk) + THREAD_SIZE) - 1)
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->psw.addr)
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->gprs[15])