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Date: Fri, 1 Aug 2008 14:11:46 -0700
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: linux-rt-users@...r.kernel.org
Cc: rostedt@...dmis.org, tglx@...utronix.de,
linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: [PATCH -rt] apply rcu_process_callbacks() changes from mainline
On its way to mainline, rcu_process_callbacks() became a static
function and the unused function rcu_advance_callbacks() was
removed. The attached patch adjusts -rt to better match mainline.
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
include/linux/rcuclassic.h | 3 ---
include/linux/rcupreempt.h | 2 --
kernel/rcuclassic.c | 13 +------------
kernel/rcupreempt.c | 2 +-
4 files changed, 2 insertions(+), 18 deletions(-)
diff -urpNa -X dontdiff linux-2.6.26-rt1/include/linux/rcuclassic.h linux-2.6.26-rt1-rhf/include/linux/rcuclassic.h
--- linux-2.6.26-rt1/include/linux/rcuclassic.h 2008-07-30 05:42:42.000000000 -0700
+++ linux-2.6.26-rt1-rhf/include/linux/rcuclassic.h 2008-07-30 10:30:31.000000000 -0700
@@ -162,7 +162,4 @@ extern long rcu_batches_completed_bh(voi
#define rcu_exit_nohz() do { } while (0)
#define rcu_preempt_boost_init() do { } while (0)
-struct softirq_action;
-extern void rcu_process_callbacks(struct softirq_action *unused);
-
#endif /* __LINUX_RCUCLASSIC_H */
diff -urpNa -X dontdiff linux-2.6.26-rt1/include/linux/rcupreempt.h linux-2.6.26-rt1-rhf/include/linux/rcupreempt.h
--- linux-2.6.26-rt1/include/linux/rcupreempt.h 2008-07-30 05:42:41.000000000 -0700
+++ linux-2.6.26-rt1-rhf/include/linux/rcupreempt.h 2008-07-30 10:31:44.000000000 -0700
@@ -146,6 +146,4 @@ static inline void rcu_exit_nohz(void)
#define rcu_exit_nohz() do { } while (0)
#endif /* CONFIG_NO_HZ */
-extern void rcu_process_callbacks(struct softirq_action *unused);
-
#endif /* __LINUX_RCUPREEMPT_H */
diff -urpNa -X dontdiff linux-2.6.26-rt1/kernel/rcuclassic.c linux-2.6.26-rt1-rhf/kernel/rcuclassic.c
--- linux-2.6.26-rt1/kernel/rcuclassic.c 2008-07-30 05:42:42.000000000 -0700
+++ linux-2.6.26-rt1-rhf/kernel/rcuclassic.c 2008-07-30 10:54:35.000000000 -0700
@@ -458,7 +458,7 @@ static void __rcu_process_callbacks(stru
rcu_do_batch(rdp);
}
-void rcu_process_callbacks(struct softirq_action *unused)
+static void rcu_process_callbacks(struct softirq_action *unused)
{
__rcu_process_callbacks(&rcu_ctrlblk, &__get_cpu_var(rcu_data));
__rcu_process_callbacks(&rcu_bh_ctrlblk, &__get_cpu_var(rcu_bh_data));
@@ -513,17 +513,6 @@ int rcu_needs_cpu(int cpu)
return (!!rdp->curlist || !!rdp_bh->curlist || rcu_pending(cpu));
}
-void rcu_advance_callbacks(int cpu, int user)
-{
- if (user ||
- (idle_cpu(cpu) && !in_softirq() &&
- hardirq_count() <= (1 << HARDIRQ_SHIFT))) {
- rcu_qsctr_inc(cpu);
- rcu_bh_qsctr_inc(cpu);
- } else if (!in_softirq())
- rcu_bh_qsctr_inc(cpu);
-}
-
void rcu_check_callbacks(int cpu, int user)
{
if (user ||
diff -urpNa -X dontdiff linux-2.6.26-rt1/kernel/rcupreempt.c linux-2.6.26-rt1-rhf/kernel/rcupreempt.c
--- linux-2.6.26-rt1/kernel/rcupreempt.c 2008-07-30 05:42:42.000000000 -0700
+++ linux-2.6.26-rt1-rhf/kernel/rcupreempt.c 2008-07-30 11:02:30.000000000 -0700
@@ -944,7 +944,7 @@ void __cpuinit rcu_online_cpu(int cpu)
spin_unlock_irqrestore(&rcu_ctrlblk.fliplock, flags);
}
-void rcu_process_callbacks(struct softirq_action *unused)
+static void rcu_process_callbacks(struct softirq_action *unused)
{
unsigned long flags;
struct rcu_head *next, *list;
--
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