arm64/stacktrace: Export save_stack_trace_regs()

wcohen · ctmarinas · commit c82fd1e6bd55 · 2019-03-19T14:55:10.000Z
The ARM64 implements the save_stack_trace_regs function, but it is unusable for any diagnostic tooling compiled as a kernel module due the missing EXPORT_SYMBOL_GPL for the function. Export save_stack_trace_regs() to align with other architectures such as s390, openrisc, and powerpc. This is similar to the ARM64 export of save_stack_trace_tsk() added in git commit e27c7fa. Signed-off-by: William Cohen <wcohen@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c
@@ -143,6 +143,7 @@ void save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace)
 	if (trace->nr_entries < trace->max_entries)
 		trace->entries[trace->nr_entries++] = ULONG_MAX;
 }
+EXPORT_SYMBOL_GPL(save_stack_trace_regs);
 
 static noinline void __save_stack_trace(struct task_struct *tsk,
 	struct stack_trace *trace, unsigned int nosched)

Original file line number	Diff line number	Diff line change
`@@ -143,6 +143,7 @@ void save_stack_trace_regs(struct pt_regs regs, struct stack_trace trace)`
`143`	`143`	`if (trace->nr_entries < trace->max_entries)`
`144`	`144`	`trace->entries[trace->nr_entries++] = ULONG_MAX;`
`145`	`145`	`}`
	`146`	`+EXPORT_SYMBOL_GPL(save_stack_trace_regs);`
`146`	`147`
`147`	`148`	`static noinline void __save_stack_trace(struct task_struct *tsk,`
`148`	`149`	`struct stack_trace *trace, unsigned int nosched)`