The patch titled
RCU: add comments to rcu_pending/rcu_needs_cpu
has been removed from the -mm tree. Its filename is
rcu-introduce-rcu_needs_cpu-interface-fix.patch
This patch was probably dropped from -mm because
it has now been merged into a subsystem tree or
into Linus's tree, or because it was folded into
its parent patch in the -mm tree.
From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Add some comments to rcu_pending() and rcu_needs_cpu().
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/rcupdate.c | 11 +++++++++++
1 files changed, 11 insertions(+)
diff -puN kernel/rcupdate.c~rcu-introduce-rcu_needs_cpu-interface-fix kernel/rcupdate.c
--- 25/kernel/rcupdate.c~rcu-introduce-rcu_needs_cpu-interface-fix Mon May 1 15:14:28 2006
+++ 25-akpm/kernel/rcupdate.c Mon May 1 15:14:44 2006
@@ -479,12 +479,23 @@ static int __rcu_pending(struct rcu_ctrl
return 0;
}
+/*
+ * Check to see if there is any immediate RCU-related work to be done
+ * by the current CPU, returning 1 if so. This function is part of the
+ * RCU implementation; it is -not- an exported member of the RCU API.
+ */
int rcu_pending(int cpu)
{
return __rcu_pending(&rcu_ctrlblk, &per_cpu(rcu_data, cpu)) ||
__rcu_pending(&rcu_bh_ctrlblk, &per_cpu(rcu_bh_data, cpu));
}
+/*
+ * Check to see if any future RCU-related work will need to be done
+ * by the current CPU, even if none need be done immediately, returning
+ * 1 if so. This function is part of the RCU implementation; it is -not-
+ * an exported member of the RCU API.
+ */
int rcu_needs_cpu(int cpu)
{
struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
_
Patches currently in -mm which might be from heiko.carstens@xxxxxxxxxx are
rcu-introduce-rcu_needs_cpu-interface.patch
rcu-introduce-rcu_needs_cpu-interface-fix.patch
s390-exploit-rcu_needs_cpu-interface.patch
s390-lcs-incorrect-test.patch
git-klibc.patch
adjust-handle_irr_event-return-type.patch
-
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