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Subjectrcu: Replace __this_cpu_ptr uses with raw_cpu_ptr
3.15-rc1 has raw_cpu operations. So this patch that you acked before will
now apply.


Subject: rcu: Replace __this_cpu_ptr uses with raw_cpu_ptr

__this_cpu_ptr is being phased out.

One special case is increment_cpu_stall_ticks().
A per cpu variable is incremented so use raw_cpu_inc().

Cc: Dipankar Sarma <dipankar@in.ibm.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Christoph Lameter <cl@linux.com>

Index: linux/kernel/rcu/tree.c
===================================================================
--- linux.orig/kernel/rcu/tree.c 2014-04-14 13:24:55.189353922 -0500
+++ linux/kernel/rcu/tree.c 2014-04-14 13:24:55.185354000 -0500
@@ -1951,7 +1951,7 @@
static void rcu_adopt_orphan_cbs(struct rcu_state *rsp, unsigned long flags)
{
int i;
- struct rcu_data *rdp = __this_cpu_ptr(rsp->rda);
+ struct rcu_data *rdp = raw_cpu_ptr(rsp->rda);

/* No-CBs CPUs are handled specially. */
if (rcu_nocb_adopt_orphan_cbs(rsp, rdp, flags))
@@ -2334,7 +2334,7 @@
__rcu_process_callbacks(struct rcu_state *rsp)
{
unsigned long flags;
- struct rcu_data *rdp = __this_cpu_ptr(rsp->rda);
+ struct rcu_data *rdp = raw_cpu_ptr(rsp->rda);

WARN_ON_ONCE(rdp->beenonline == 0);

@@ -2988,7 +2988,7 @@
static void rcu_barrier_func(void *type)
{
struct rcu_state *rsp = type;
- struct rcu_data *rdp = __this_cpu_ptr(rsp->rda);
+ struct rcu_data *rdp = raw_cpu_ptr(rsp->rda);

_rcu_barrier_trace(rsp, "IRQ", -1, rsp->n_barrier_done);
atomic_inc(&rsp->barrier_cpu_count);
Index: linux/kernel/rcu/tree_plugin.h
===================================================================
--- linux.orig/kernel/rcu/tree_plugin.h 2014-04-14 13:24:55.189353922 -0500
+++ linux/kernel/rcu/tree_plugin.h 2014-04-14 13:24:55.185354000 -0500
@@ -1855,7 +1855,7 @@
struct rcu_data *rdp;

for_each_rcu_flavor(rsp) {
- rdp = __this_cpu_ptr(rsp->rda);
+ rdp = raw_cpu_ptr(rsp->rda);
if (rdp->qlen_lazy != 0) {
atomic_inc(&oom_callback_count);
rsp->call(&rdp->oom_head, rcu_oom_callback);
@@ -1997,7 +1997,7 @@
struct rcu_state *rsp;

for_each_rcu_flavor(rsp)
- __this_cpu_ptr(rsp->rda)->ticks_this_gp++;
+ raw_cpu_inc(rsp->rda->ticks_this_gp);
}

#else /* #ifdef CONFIG_RCU_CPU_STALL_INFO */

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