[Astlinux-commits] SF.net SVN: astlinux:[7103] branches/1.0/project/astlinux/kernel-patches/ linux-910-avoid-spurious-RCU-CPU-stall-warnings.patch

[<abe...@us...>]

Revision: 7103
          http://sourceforge.net/p/astlinux/code/7103
Author:   abelbeck
Date:     2015-06-08 17:34:08 +0000 (Mon, 08 Jun 2015)
Log Message:
-----------
linux, backport rcu: Avoid spurious RCU CPU stall warnings
https://lkml.org/lkml/2012/9/26/5

Added Paths:
-----------
    branches/1.0/project/astlinux/kernel-patches/linux-910-avoid-spurious-RCU-CPU-stall-warnings.patch

Added: branches/1.0/project/astlinux/kernel-patches/linux-910-avoid-spurious-RCU-CPU-stall-warnings.patch
===================================================================
--- branches/1.0/project/astlinux/kernel-patches/linux-910-avoid-spurious-RCU-CPU-stall-warnings.patch	                        (rev 0)
+++ branches/1.0/project/astlinux/kernel-patches/linux-910-avoid-spurious-RCU-CPU-stall-warnings.patch	2015-06-08 17:34:08 UTC (rev 7103)
@@ -0,0 +1,26 @@
+From c96ea7cfdd88d0a67c970502bc5313fede34b86b Mon Sep 17 00:00:00 2001
+From: Paul E. McKenney <pau...@li...>
+Date: Sun, 23 Sep 2012 16:42:51 +0200
+Subject: [PATCH] rcu: Avoid spurious RCU CPU stall warnings
+
+---
+ kernel/rcutree.c |    3 ++-
+ 1 files changed, 2 insertions(+), 1 deletions(-)
+
+diff --git a/kernel/rcutree.c b/kernel/rcutree.c
+index 2cf8eb3..98f2752 100644
+--- a/kernel/rcutree.c
++++ b/kernel/rcutree.c
+@@ -633,7 +633,8 @@
+ 	j = ACCESS_ONCE(jiffies);
+ 	js = ACCESS_ONCE(rsp->jiffies_stall);
+ 	rnp = rdp->mynode;
+-	if ((ACCESS_ONCE(rnp->qsmask) & rdp->grpmask) && ULONG_CMP_GE(j, js)) {
++	if (rcu_gp_in_progress(rsp) &&
++	    (ACCESS_ONCE(rnp->qsmask) & rdp->grpmask) && ULONG_CMP_GE(j, js)) {
+ 
+ 		/* We haven't checked in, so go dump stack. */
+ 		print_cpu_stall(rsp);
+
+--
+Gitblit v1.3.1

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.