Subject: Ksplice: Export symbols needed for Ksplice (non-module)
Date: Fri, 5 Dec 2008 19:03:59 -0500
From: Tim Abbott <tabbott@mit.edu>

Ksplice uses task_curr in order to confirm that no other tasks are
executing during Ksplice's kernel stack check.

Ksplice uses find_bug and search_exception_tables as part of its
conservative check that the user provided the correct source code for
the running kernel.

Signed-off-by: Tim Abbott <tabbott@mit.edu>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 kernel/extable.c |    3 +++
 kernel/sched.c   |    1 +
 lib/bug.c        |    1 +
 3 files changed, 5 insertions(+)

diff --git a/kernel/extable.c b/kernel/extable.c
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -40,6 +40,7 @@ const struct exception_table_entry *sear
 		e = search_module_extables(addr);
 	return e;
 }
+EXPORT_SYMBOL_GPL(search_exception_tables);
 
 __notrace_funcgraph int core_kernel_text(unsigned long addr)
 {
@@ -60,6 +61,7 @@ __notrace_funcgraph int __kernel_text_ad
 		return 1;
 	return is_module_text_address(addr);
 }
+EXPORT_SYMBOL_GPL(__kernel_text_address);
 
 int kernel_text_address(unsigned long addr)
 {
@@ -83,3 +85,4 @@ int func_ptr_is_kernel_text(void *ptr)
 		return 1;
 	return is_module_text_address(addr);
 }
+EXPORT_SYMBOL_GPL(kernel_text_address);
diff --git a/kernel/sched.c b/kernel/sched.c
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1801,6 +1801,7 @@ inline int task_curr(const struct task_s
 {
 	return cpu_curr(task_cpu(p)) == p;
 }
+EXPORT_SYMBOL_GPL(task_curr);
 
 static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu)
 {
diff --git a/lib/bug.c b/lib/bug.c
--- a/lib/bug.c
+++ b/lib/bug.c
@@ -124,6 +124,7 @@ const struct bug_entry *find_bug(unsigne
 
 	return module_find_bug(bugaddr);
 }
+EXPORT_SYMBOL_GPL(find_bug);
 
 enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs)
 {