[PATCH 1.5/2] generic-smp: fix initial quiesent count.

Peter Zijlstra
2009-02-14T14:46:56Z

first compile, then send out...

---
Subject: generic-smp: fix initial quiesent count.
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Sat Feb 14 15:36:07 CET 2009

If we start with a quiesent sequence count of 0, we'll match the initial stamp
values of the cfd_data, and never make any progress.

To avoid getting stuck in this situation, start out with an increased quiesent
sequence count.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
kernel/smp.c | 1 +
1 file changed, 1 insertion(+)

Index: linux-2.6/kernel/smp.c
===================================================================
--- linux-2.6.orig/kernel/smp.c
+++ linux-2.6/kernel/smp.c
@@ -27,6 +27,7 @@ static struct {
} call_function __cacheline_aligned_in_smp = {
.queue = LIST_HEAD_INIT(call_function.queue),
.lock = __SPIN_LOCK_UNLOCKED(call_function.lock),
+ .quiesent = 1,
};

enum {