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rcu: Remove rcu_dynticks * parameters when they are always this_cpu_ptr(&rcu_dynticks)

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For some functions in kernel/rcu/tree* the rdtp parameter is always
this_cpu_ptr(rdtp).  Remove the parameter if constant and calculate the
pointer in function.

This will have the advantage that it is obvious that the address are
all per cpu offsets and thus it will enable the use of this_cpu_ops in
the future.

Signed-off-by: Christoph Lameter <cl@linux.com>
[ paulmck: Forward-ported to rcu/dev, whitespace adjustment. ]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
This commit is contained in:
Christoph Lameter
2014-09-02 14:13:44 -07:00
committed by Paul E. McKenney
parent d7e2993396
commit 28ced795cb
3 changed files with 22 additions and 18 deletions
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11
kernel/rcu/tree_plugin.h
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@@ -2761,9 +2761,10 @@ static int full_sysidle_state; /* Current system-idle state. */
* to detect full-system idle states, not RCU quiescent states and grace
* periods. The caller must have disabled interrupts.
*/
static void rcu_sysidle_enter(struct rcu_dynticks *rdtp, int irq)
static void rcu_sysidle_enter(int irq)
{
unsigned long j;
struct rcu_dynticks *rdtp = this_cpu_ptr(&rcu_dynticks);
/* If there are no nohz_full= CPUs, no need to track this. */
if (!tick_nohz_full_enabled())
@@ -2832,8 +2833,10 @@ void rcu_sysidle_force_exit(void)
* usermode execution does -not- count as idle here! The caller must
* have disabled interrupts.
*/
static void rcu_sysidle_exit(struct rcu_dynticks *rdtp, int irq)
static void rcu_sysidle_exit(int irq)
{
struct rcu_dynticks *rdtp = this_cpu_ptr(&rcu_dynticks);
/* If there are no nohz_full= CPUs, no need to track this. */
if (!tick_nohz_full_enabled())
return;
@@ -3127,11 +3130,11 @@ static void rcu_sysidle_init_percpu_data(struct rcu_dynticks *rdtp)
#else /* #ifdef CONFIG_NO_HZ_FULL_SYSIDLE */
static void rcu_sysidle_enter(struct rcu_dynticks *rdtp, int irq)
static void rcu_sysidle_enter(int irq)
{
}
static void rcu_sysidle_exit(struct rcu_dynticks *rdtp, int irq)
static void rcu_sysidle_exit(int irq)
{
}