Commit eba0daf3 authored by David S. Miller's avatar David S. Miller

[SPARC32]: Move get_wchan into processor.c

parent a807608b
No related merge requests found
......@@ -725,3 +725,39 @@ pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
"g1", "g2", "g3", "o0", "o1", "memory", "cc");
return retval;
}
extern void scheduling_functions_start_here(void);
extern void scheduling_functions_end_here(void);
unsigned long get_wchan(struct task_struct *task)
{
unsigned long pc, fp, bias = 0;
unsigned long task_base = (unsigned long) task;
unsigned long ret = 0;
struct reg_window *rw;
int count = 0;
if (!task || task == current ||
task->state == TASK_RUNNING)
goto out;
fp = task->thread_info->ksp + bias;
do {
/* Bogus frame pointer? */
if (fp < (task_base + sizeof(struct task_struct)) ||
fp >= (task_base + (2 * PAGE_SIZE)))
break;
rw = (struct reg_window *) fp;
pc = rw->ins[7];
if (pc < ((unsigned long) scheduling_functions_start_here) ||
pc >= ((unsigned long) scheduling_functions_end_here)) {
ret = pc;
goto out;
}
fp = rw->ins[6] + bias;
} while (++count < 16);
out:
return ret;
}
......@@ -139,34 +139,7 @@ extern __inline__ void start_thread(struct pt_regs * regs, unsigned long pc,
#define release_thread(tsk) do { } while(0)
extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
#define get_wchan(__TSK) \
({ extern void scheduling_functions_start_here(void); \
extern void scheduling_functions_end_here(void); \
unsigned long pc, fp, bias = 0; \
unsigned long task_base = (unsigned long) (__TSK); \
unsigned long __ret = 0; \
struct reg_window *rw; \
int count = 0; \
if (!(__TSK) || (__TSK) == current || \
(__TSK)->state == TASK_RUNNING) \
goto __out; \
fp = (__TSK)->thread_info->ksp + bias; \
do { \
/* Bogus frame pointer? */ \
if (fp < (task_base + sizeof(struct task_struct)) || \
fp >= (task_base + (2 * PAGE_SIZE))) \
break; \
rw = (struct reg_window *) fp; \
pc = rw->ins[7]; \
if (pc < ((unsigned long) scheduling_functions_start_here) || \
pc >= ((unsigned long) scheduling_functions_end_here)) { \
__ret = pc; \
goto __out; \
} \
fp = rw->ins[6] + bias; \
} while (++count < 16); \
__out: __ret; \
})
extern unsigned long get_wchan(struct task_struct *);
#define KSTK_EIP(tsk) ((tsk)->thread.kregs->pc)
#define KSTK_ESP(tsk) ((tsk)->thread.kregs->u_regs[UREG_FP])
......
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