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stacktrace: fix modular build, export print_stack_trace and save_stack_trace

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fix:

ERROR: "print_stack_trace" [kernel/backtracetest.ko] undefined!
ERROR: "save_stack_trace" [kernel/backtracetest.ko] undefined!

Signed-off-by: Ingo Molnar <mingo@elte.hu>

and fix:

  Building modules, stage 2.
  MODPOST 376 modules
ERROR: "print_stack_trace" [kernel/backtracetest.ko] undefined!
make[1]: *** [__modpost] Error 1

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-06-27 21:20:17 +02:00
parent 4e6a0535dd
commit 8594698ebd
2 changed files with 4 additions and 0 deletions
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2
arch/x86/kernel/stacktrace.c
View file

@ -74,6 +74,7 @@ void save_stack_trace(struct stack_trace *trace)
if (trace->nr_entries < trace->max_entries) if (trace->nr_entries < trace->max_entries)
trace->entries[trace->nr_entries++] = ULONG_MAX; trace->entries[trace->nr_entries++] = ULONG_MAX;
} }
EXPORT_SYMBOL_GPL(save_stack_trace);
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{ {
@ -81,3 +82,4 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
if (trace->nr_entries < trace->max_entries) if (trace->nr_entries < trace->max_entries)
trace->entries[trace->nr_entries++] = ULONG_MAX; trace->entries[trace->nr_entries++] = ULONG_MAX;
} }
EXPORT_SYMBOL_GPL(save_stack_trace_tsk);

2
kernel/stacktrace.c
View file

@ -6,6 +6,7 @@
* Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com> * Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
*/ */
#include <linux/sched.h> #include <linux/sched.h>
#include <linux/module.h>
#include <linux/kallsyms.h> #include <linux/kallsyms.h>
#include <linux/stacktrace.h> #include <linux/stacktrace.h>
@ -21,4 +22,5 @@ void print_stack_trace(struct stack_trace *trace, int spaces)
print_ip_sym(trace->entries[i]); print_ip_sym(trace->entries[i]);
} }
} }
EXPORT_SYMBOL_GPL(print_stack_trace);