[PATCH] remove show_trace_task()

It no longer has any callers.

arch/alpha/kernel/traps.c

@@ -137,18 +137,6 @@ dik_show_trace(unsigned long *sp)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct * tsk)
-{
-	struct thread_info *ti = tsk->thread_info;
-	unsigned long fp, sp = ti->pcb.ksp, base = (unsigned long) ti;
- 
-	if (sp > base && sp+6*8 < base + 16*1024) {
-		fp = ((unsigned long*)sp)[6];
-		if (fp > sp && fp < base + 16*1024)
-			dik_show_trace((unsigned long *)fp);
-	}
-}
-
 static int kstack_depth_to_print = 24;
 
 void show_stack(struct task_struct *task, unsigned long *sp)

arch/arm26/kernel/traps.c

@@ -165,18 +165,6 @@ void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 		c_backtrace(fp, processor_mode(regs));
 }
 
-/*
- * This is called from SysRq-T (show_task) to display the current
- * call trace for each process.  Very useful.
- */
-void show_trace_task(struct task_struct *tsk)
-{
-	if (tsk != current) {
-		unsigned int fp = thread_saved_fp(tsk);
-		c_backtrace(fp, 0x10);
-	}
-}
-
 /* FIXME - this is probably wrong.. */
 void show_stack(struct task_struct *task, unsigned long *sp) {
 	dump_mem("Stack: ", (unsigned long)sp, 8192+(unsigned long)task->thread_info);

arch/cris/kernel/traps.c

@@ -60,14 +60,6 @@ void show_trace(unsigned long * stack)
         }
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	/* TODO, this is not really useful since its called from
-	 * SysRq-T and we don't have a keyboard.. :) 
-	 */
-}
-
-
 /*
  * These constants are for searching for possible module text
  * segments. MODULE_RANGE is a guess of how much space is likely

arch/h8300/kernel/traps.c

@@ -156,14 +156,8 @@ void show_stack(struct task_struct *task, unsigned long *esp)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	show_stack(tsk,(unsigned long *)tsk->thread.esp0);
-}
-
 void dump_stack(void)
 {
 	show_stack(NULL,NULL);
 }
-
 EXPORT_SYMBOL(dump_stack);

arch/i386/kernel/traps.c

@@ -123,16 +123,6 @@ void show_trace(struct task_struct *task, unsigned long * stack)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	unsigned long esp = tsk->thread.esp;
-
-	/* User space on another CPU? */
-	if ((esp ^ (unsigned long)tsk->thread_info) & ~(THREAD_SIZE - 1))
-		return;
-	show_trace(tsk, (unsigned long *)esp);
-}
-
 void show_stack(struct task_struct *task, unsigned long *esp)
 {
 	unsigned long *stack;

arch/mips/kernel/traps.c

@@ -126,11 +126,6 @@ void show_trace(struct task_struct *task, unsigned long *stack)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	show_trace(tsk, (long *)tsk->thread.reg29);
-}
-
 /*
  * The architecture-independent dump_stack generator
  */

arch/parisc/kernel/traps.c

@@ -202,11 +202,6 @@ void show_trace(struct task_struct *task, unsigned long *stack)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	show_trace(tsk, (unsigned long *)tsk->thread.regs.ksp);
-}
-
 void die_if_kernel(char *str, struct pt_regs *regs, long err)
 {
 	if (user_mode(regs)) {

arch/ppc64/kernel/process.c

@@ -536,10 +536,4 @@ void dump_stack(void)
 {
 	show_stack(current, (unsigned long *)__get_SP());
 }
-
 EXPORT_SYMBOL(dump_stack);
-
-void show_trace_task(struct task_struct *tsk)
-{
-	show_stack(tsk, (unsigned long *)tsk->thread.ksp);
-}

arch/s390/kernel/traps.c

@@ -105,17 +105,6 @@ void show_trace(struct task_struct *task, unsigned long * stack)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	/*
-	 * We can't print the backtrace of a running process. It is
-	 * unreliable at best and can cause kernel oopses.
-	 */
-	if (tsk->state == TASK_RUNNING)
-		return;
-	show_trace(tsk, (unsigned long *) tsk->thread.ksp);
-}
-
 void show_stack(struct task_struct *task, unsigned long *sp)
 {
 	unsigned long *stack;

arch/sh/kernel/traps.c

@@ -705,14 +705,8 @@ void show_task(unsigned long *sp)
 	show_stack(NULL, sp);
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	show_task((unsigned long *)tsk->thread.sp);
-}
-
 void dump_stack(void)
 {
 	show_stack(NULL, NULL);
 }
-
 EXPORT_SYMBOL(dump_stack);

arch/sparc64/kernel/traps.c

@@ -1760,13 +1760,6 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
 #endif
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	if (tsk)
-		show_stack(tsk,
-			   (unsigned long *) tsk->thread_info->ksp);
-}
-
 void dump_stack(void)
 {
 	unsigned long *ksp;

arch/um/kernel/sysrq.c

@@ -42,19 +42,8 @@ void dump_stack(void)
 
 	show_trace(&stack);
 }
-
 EXPORT_SYMBOL(dump_stack);
 
-void show_trace_task(struct task_struct *tsk)
-{
-	unsigned long esp = PT_REGS_SP(&tsk->thread.regs);
-
-	/* User space on another CPU? */
-	if ((esp ^ (unsigned long)tsk) & (PAGE_MASK<<1))
-		return;
-	show_trace((unsigned long *)esp);
-}
-
 /*
  * Overrides for Emacs so that we follow Linus's tabbing style.
  * Emacs will notice this stuff at the end of the file and automatically

arch/v850/kernel/process.c

@@ -234,10 +234,3 @@ unsigned long get_wchan (struct task_struct *p)
 
 	return 0;
 }
-
-void show_trace_task (struct task_struct *t)
-{
-        /* blarg XXX */
-	printk ("show_trace_task: KSP = 0x%lx, USP = 0x%lx, UPC = 0x%lx\n",
-		t->thread.ksp, KSTK_ESP (t), KSTK_EIP (t));
-}

arch/x86_64/kernel/traps.c

@@ -197,16 +197,6 @@ void show_trace(unsigned long *stack)
 	printk("\n");
 }
 
-void show_trace_task(struct task_struct *tsk)
-{
-	unsigned long rsp = tsk->thread.rsp;
-
-	/* User space on another CPU? */
-	if ((rsp ^ (unsigned long)tsk->thread_info) & (PAGE_MASK<<1))
-		return;
-	show_trace((unsigned long *)rsp);
-}
-
 void show_stack(struct task_struct *tsk, unsigned long * rsp)
 {
 	unsigned long *stack;

include/linux/sched.h

@@ -151,7 +151,6 @@ extern void init_idle(task_t *idle, int cpu);
 
 extern void show_state(void);
 extern void show_regs(struct pt_regs *);
-extern void show_trace_task(task_t *tsk);
 
 /*
  * TASK is a pointer to the task whose backtrace we want to see (or NULL for current