[PATCH 11/14] powerpc/64s: cpuidle read mostly for common globals

[Gautham R Shenoy]

On Mon, Jun 12, 2017 at 09:58:32AM +1000, Nicholas Piggin wrote:
> Ensure these don't get put into bouncing cachelines.
> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>

Reviewed-by: Gautham R. Shenoy <ego at linux.vnet.ibm.com>

> ---
>  drivers/cpuidle/cpuidle-powernv.c | 10 +++++-----
>  drivers/cpuidle/cpuidle-pseries.c |  8 ++++----
>  2 files changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
> index 50b3c2e0306f..9d03326ac05e 100644
> --- a/drivers/cpuidle/cpuidle-powernv.c
> +++ b/drivers/cpuidle/cpuidle-powernv.c
> @@ -32,18 +32,18 @@ static struct cpuidle_driver powernv_idle_driver = {
>  	.owner            = THIS_MODULE,
>  };
> 
> -static int max_idle_state;
> -static struct cpuidle_state *cpuidle_state_table;
> +static int max_idle_state __read_mostly;
> +static struct cpuidle_state *cpuidle_state_table __read_mostly;
> 
>  struct stop_psscr_table {
>  	u64 val;
>  	u64 mask;
>  };
> 
> -static struct stop_psscr_table stop_psscr_table[CPUIDLE_STATE_MAX];
> +static struct stop_psscr_table stop_psscr_table[CPUIDLE_STATE_MAX] __read_mostly;
> 
> -static u64 snooze_timeout;
> -static bool snooze_timeout_en;
> +static u64 snooze_timeout __read_mostly;
> +static bool snooze_timeout_en __read_mostly;
> 
>  static int snooze_loop(struct cpuidle_device *dev,
>  			struct cpuidle_driver *drv,
> diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c
> index 7b12bb2ea70f..a404f352d284 100644
> --- a/drivers/cpuidle/cpuidle-pseries.c
> +++ b/drivers/cpuidle/cpuidle-pseries.c
> @@ -25,10 +25,10 @@ struct cpuidle_driver pseries_idle_driver = {
>  	.owner            = THIS_MODULE,
>  };
> 
> -static int max_idle_state;
> -static struct cpuidle_state *cpuidle_state_table;
> -static u64 snooze_timeout;
> -static bool snooze_timeout_en;
> +static int max_idle_state __read_mostly;
> +static struct cpuidle_state *cpuidle_state_table __read_mostly;
> +static u64 snooze_timeout __read_mostly;
> +static bool snooze_timeout_en __read_mostly;
> 
>  static inline void idle_loop_prolog(unsigned long *in_purr)
>  {
> -- 
> 2.11.0
>