ppc64: start using kallsyms now its compiled in by default

arch/ppc64/kernel/process.c

@@ -32,6 +32,7 @@
 #include <linux/init_task.h>
 #include <linux/prctl.h>
 #include <linux/ptrace.h>
+#include <linux/kallsyms.h>
 
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>
@@ -130,12 +131,9 @@ struct task_struct *__switch_to(struct task_struct *prev,
 	return last;
 }
 
-char *ppc_find_proc_name(unsigned *p, char *buf, unsigned buflen);
-
 void show_regs(struct pt_regs * regs)
 {
 	int i;
-	char name_buf[256];
 
 	printk("NIP: %016lX XER: %016lX LR: %016lX\n",
 	       regs->nip, regs->xer, regs->link);
@@ -170,8 +168,7 @@ void show_regs(struct pt_regs * regs)
 	 * above info out without failing
 	 */
 	printk("NIP [%016lx] ", regs->nip);
-	printk("%s\n", ppc_find_proc_name((unsigned *)regs->nip,
-	       name_buf, 256));
+	print_symbol("%s\n", regs->nip);
 	show_stack(current, (unsigned long *)regs->gpr[1]);
 }
 
@@ -385,62 +382,6 @@ int sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
 	return error;
 }
 
-char *ppc_find_proc_name(unsigned *p, char *buf, unsigned buflen)
-{
-	unsigned long tb_flags;
-	unsigned short name_len;
-	unsigned long tb_start, code_start, code_ptr, code_offset;
-	unsigned int code_len;
-	unsigned long end;
-
-	strcpy(buf, "Unknown");
-	code_ptr = (unsigned long)p;
-	code_offset = 0;
-
-	/* handle functions in text and init sections */
-	if (((unsigned long)p >= (unsigned long)_stext) && 
-	    ((unsigned long)p < (unsigned long)_etext))
-		end = (unsigned long)_etext;
-	else if (((unsigned long)p >= (unsigned long)__init_begin) && 
-		 ((unsigned long)p < (unsigned long)__init_end))
-		end = (unsigned long)__init_end;
-	else
-		return buf;
-
-	while ((unsigned long)p < end) {
-		if (*p == 0) {
-			tb_start = (unsigned long)p;
-			++p;	/* Point to traceback flags */
-			tb_flags = *((unsigned long *)p);
-			p += 2;	/* Skip over traceback flags */
-			if (tb_flags & TB_NAME_PRESENT) {
-				if (tb_flags & TB_PARMINFO)
-					++p;	/* skip over parminfo data */
-				if (tb_flags & TB_HAS_TBOFF) {
-					code_len = *p;	/* get code length */
-					code_start = tb_start - code_len;
-					code_offset = code_ptr - code_start + 1;
-					if (code_offset > 0x100000)
-						break;
-					++p;	/* skip over code size */
-				}
-				name_len = *((unsigned short *)p);
-				if (name_len > (buflen-20))
-					name_len = buflen-20;
-				memcpy(buf, ((char *)p)+2, name_len);
-				buf[name_len] = 0;
-				if (code_offset)
-					sprintf(buf+name_len, "+0x%lx",
-						code_offset-1); 
-			}
-			break;
-		}
-		++p;
-	}
-
-	return buf;
-}
-
 /*
  * These bracket the sleeping functions..
  */
@@ -480,7 +421,6 @@ void show_stack(struct task_struct *p, unsigned long *_sp)
 	unsigned long ip;
 	unsigned long stack_page = (unsigned long)p->thread_info;
 	int count = 0;
-	char name_buf[256];
 	unsigned long sp = (unsigned long)_sp;
 
 	if (!p)
@@ -499,8 +439,7 @@ void show_stack(struct task_struct *p, unsigned long *_sp)
 		if (__get_user(ip, (unsigned long *)(sp + 16)))
 			break;
 		printk("[%016lx] ", ip);
-		printk("%s\n", ppc_find_proc_name((unsigned *)ip,
-		       name_buf, 256));
+		print_symbol("%s\n", ip);
 	} while (count++ < 32);
 }