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authorPaolo Bonzini <pbonzini@redhat.com>2017-02-09 18:01:23 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2017-02-09 18:01:23 +0300
commit2e751dfb5ffd20d1a31837dbc9718741df69bffe (patch)
tree8b7e0e47cf0ef4efda0f1090f0ccbbeb17e5a085 /kernel/rcu/tiny_plugin.h
parenta0e136d436ded817c0aade72efdefa56a00b4e5e (diff)
parent7b6b46311a8562fb3a9e035ed6ffab6d49c28886 (diff)
downloadlinux-2e751dfb5ffd20d1a31837dbc9718741df69bffe.tar.xz
Merge tag 'kvmarm-for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
kvmarm updates for 4.11 - GICv3 save restore - Cache flushing fixes - MSI injection fix for GICv3 ITS - Physical timer emulation support
Diffstat (limited to 'kernel/rcu/tiny_plugin.h')
-rw-r--r--kernel/rcu/tiny_plugin.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/kernel/rcu/tiny_plugin.h b/kernel/rcu/tiny_plugin.h
index 196f0302e2f4..c64b827ecbca 100644
--- a/kernel/rcu/tiny_plugin.h
+++ b/kernel/rcu/tiny_plugin.h
@@ -60,12 +60,17 @@ EXPORT_SYMBOL_GPL(rcu_scheduler_active);
/*
* During boot, we forgive RCU lockdep issues. After this function is
- * invoked, we start taking RCU lockdep issues seriously.
+ * invoked, we start taking RCU lockdep issues seriously. Note that unlike
+ * Tree RCU, Tiny RCU transitions directly from RCU_SCHEDULER_INACTIVE
+ * to RCU_SCHEDULER_RUNNING, skipping the RCU_SCHEDULER_INIT stage.
+ * The reason for this is that Tiny RCU does not need kthreads, so does
+ * not have to care about the fact that the scheduler is half-initialized
+ * at a certain phase of the boot process.
*/
void __init rcu_scheduler_starting(void)
{
WARN_ON(nr_context_switches() > 0);
- rcu_scheduler_active = 1;
+ rcu_scheduler_active = RCU_SCHEDULER_RUNNING;
}
#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */