sh: stacktrace: Remove stacktrace_ops.stack()

The SH implementation never called stacktrace_ops.stack().
Presumably this was copied from the x86 implementation.

Hence remove the method, and all implementations (most of them are
dummies).

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Rich Felker <[e-mail]>

arch/sh/include/asm/stacktrace.h

···
 
 struct stacktrace_ops {
 	void (*address)(void *data, unsigned long address, int reliable);
-	/* On negative return stop dumping */
-	int (*stack)(void *data, char *name);
 };
 
 void dump_trace(struct task_struct *tsk, struct pt_regs *regs,

arch/sh/kernel/dumpstack.c

···
 	}
 }
 
-static int print_trace_stack(void *data, char *name)
-{
-	printk("%s <%s> ", (char *)data, name);
-	return 0;
-}
-
 /*
  * Print one address/symbol entries per line.
  */
···
 }
 
 static const struct stacktrace_ops print_trace_ops = {
-	.stack = print_trace_stack,
 	.address = print_trace_address,
 };
 

arch/sh/kernel/perf_callchain.c

···
 #include <asm/unwinder.h>
 #include <asm/ptrace.h>
 
-static int callchain_stack(void *data, char *name)
-{
-	return 0;
-}
-
 static void callchain_address(void *data, unsigned long addr, int reliable)
 {
 	struct perf_callchain_entry_ctx *entry = data;
···
 }
 
 static const struct stacktrace_ops callchain_ops = {
-	.stack		= callchain_stack,
 	.address	= callchain_address,
 };
 

arch/sh/kernel/stacktrace.c

···
 #include <asm/ptrace.h>
 #include <asm/stacktrace.h>
 
-static int save_stack_stack(void *data, char *name)
-{
-	return 0;
-}
-
 /*
  * Save stack-backtrace addresses into a stack_trace buffer.
  */
···
 }
 
 static const struct stacktrace_ops save_stack_ops = {
-	.stack = save_stack_stack,
 	.address = save_stack_address,
 };
 
···
 }
 
 static const struct stacktrace_ops save_stack_ops_nosched = {
-	.stack = save_stack_stack,
 	.address = save_stack_address_nosched,
 };
 

arch/sh/oprofile/backtrace.c

···
 #include <asm/sections.h>
 #include <asm/stacktrace.h>
 
-static int backtrace_stack(void *data, char *name)
-{
-	/* Yes, we want all stacks */
-	return 0;
-}
-
 static void backtrace_address(void *data, unsigned long addr, int reliable)
 {
 	unsigned int *depth = data;
···
 }
 
 static struct stacktrace_ops backtrace_ops = {
-	.stack = backtrace_stack,
 	.address = backtrace_address,
 };