Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
[PATCH] arm26: 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>
authored by Al Viro and committed by Linus Torvalds 7fdf0d7a 02ef691f
+4
-4
arch/arm26/kernel/traps.c
+4
-4
arch/arm26/kernel/traps.c
···
132
133
/*static*/ void __dump_stack(struct task_struct *tsk, unsigned long sp)
134
{
135
-
dump_mem("Stack: ", sp, 8192+(unsigned long)tsk->thread_info);
136
}
137
138
void dump_stack(void)
···
158
} else if (verify_stack(fp)) {
159
printk("invalid frame pointer 0x%08x", fp);
160
ok = 0;
161
-
} else if (fp < (unsigned long)(tsk->thread_info + 1))
162
printk("frame pointer underflow");
163
printk("\n");
164
···
168
169
/* FIXME - this is probably wrong.. */
170
void show_stack(struct task_struct *task, unsigned long *sp) {
171
-
dump_mem("Stack: ", (unsigned long)sp, 8192+(unsigned long)task->thread_info);
172
}
173
174
DEFINE_SPINLOCK(die_lock);
···
187
printk("CPU: %d\n", smp_processor_id());
188
show_regs(regs);
189
printk("Process %s (pid: %d, stack limit = 0x%p)\n",
190
-
current->comm, current->pid, tsk->thread_info + 1);
191
192
if (!user_mode(regs) || in_interrupt()) {
193
__dump_stack(tsk, (unsigned long)(regs + 1));
···
132
133
/*static*/ void __dump_stack(struct task_struct *tsk, unsigned long sp)
134
{
135
+
dump_mem("Stack: ", sp, 8192+(unsigned long)task_stack_page(tsk));
136
}
137
138
void dump_stack(void)
···
158
} else if (verify_stack(fp)) {
159
printk("invalid frame pointer 0x%08x", fp);
160
ok = 0;
161
+
} else if (fp < (unsigned long)end_of_stack(tsk))
162
printk("frame pointer underflow");
163
printk("\n");
164
···
168
169
/* FIXME - this is probably wrong.. */
170
void show_stack(struct task_struct *task, unsigned long *sp) {
171
+
dump_mem("Stack: ", (unsigned long)sp, 8192+(unsigned long)task_stack_page(task));
172
}
173
174
DEFINE_SPINLOCK(die_lock);
···
187
printk("CPU: %d\n", smp_processor_id());
188
show_regs(regs);
189
printk("Process %s (pid: %d, stack limit = 0x%p)\n",
190
+
current->comm, current->pid, end_of_stack(tsk));
191
192
if (!user_mode(regs) || in_interrupt()) {
193
__dump_stack(tsk, (unsigned long)(regs + 1));
+1
-1
include/asm-arm26/thread_info.h
+1
-1
include/asm-arm26/thread_info.h
···
82
83
/* FIXME - PAGE_SIZE < 32K */
84
#define THREAD_SIZE (8*32768) // FIXME - this needs attention (see kernel/fork.c which gets a nice div by zero if this is lower than 8*32768
85
-
#define task_pt_regs(task) ((struct pt_regs *)((unsigned long)(task)->thread_info + THREAD_SIZE - 8) - 1)
86
87
extern struct thread_info *alloc_thread_info(struct task_struct *task);
88
extern void free_thread_info(struct thread_info *);
···
82
83
/* FIXME - PAGE_SIZE < 32K */
84
#define THREAD_SIZE (8*32768) // FIXME - this needs attention (see kernel/fork.c which gets a nice div by zero if this is lower than 8*32768
85
+
#define task_pt_regs(task) ((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE - 8) - 1)
86
87
extern struct thread_info *alloc_thread_info(struct task_struct *task);
88
extern void free_thread_info(struct thread_info *);