From c11274655558e72d8d4a598c0077874c094d97d5 Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Mon, 4 Feb 2008 22:30:36 -0800 Subject: uml: implement get_wchan Implement get_wchan - the algorithm is similar to x86. It starts with the stack pointer of the process in question and looks above that for addresses that are kernel text. The second one which isn't in the scheduler is the one that's returned. The first one is ignored because that will be UML's own context switching routine. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-um/processor-generic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/asm-um') diff --git a/include/asm-um/processor-generic.h b/include/asm-um/processor-generic.h index 78c0599cc80c..057a76d41569 100644 --- a/include/asm-um/processor-generic.h +++ b/include/asm-um/processor-generic.h @@ -128,6 +128,6 @@ extern struct cpuinfo_um cpu_data[]; #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf) -#define get_wchan(p) (0) +extern unsigned long get_wchan(struct task_struct *p); #endif -- cgit v1.2.3