On Friday, August 30, 2013 12:25:10 PM Bartlomiej Zolnierkiewicz wrote:
> There is no reason to define CPUIDLE_STATE_MAX (currently 10) entries
> in states tables if the driver always stops iterating over table when
> it encounters first .enter == NULL entry.
>
> $ size drivers/idle/intel_idle.o.*
> text data bss dec hex filename
> 2886 5440 32 8358 20a6 drivers/idle/intel_idle.o.before
> 2886 3752 32 6670 1a0e drivers/idle/intel_idle.o.after
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
> Signed-off-by: Kyungmin Park <[email protected]>
> Cc: Len Brown <[email protected]>
Thanks, I'll queue this series up for 3.13.
> ---
> drivers/idle/intel_idle.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
> index fa6964d..9c97fbb42 100644
> --- a/drivers/idle/intel_idle.c
> +++ b/drivers/idle/intel_idle.c
> @@ -123,7 +123,7 @@ static struct cpuidle_state *cpuidle_state_table;
> * which is also the index into the MWAIT hint array.
> * Thus C0 is a dummy.
> */
> -static struct cpuidle_state nehalem_cstates[CPUIDLE_STATE_MAX] = {
> +static struct cpuidle_state nehalem_cstates[] = {
> {
> .name = "C1-NHM",
> .desc = "MWAIT 0x00",
> @@ -156,7 +156,7 @@ static struct cpuidle_state
> nehalem_cstates[CPUIDLE_STATE_MAX] = {
> .enter = NULL }
> };
>
> -static struct cpuidle_state snb_cstates[CPUIDLE_STATE_MAX] = {
> +static struct cpuidle_state snb_cstates[] = {
> {
> .name = "C1-SNB",
> .desc = "MWAIT 0x00",
> @@ -196,7 +196,7 @@ static struct cpuidle_state
> snb_cstates[CPUIDLE_STATE_MAX] = {
> .enter = NULL }
> };
>
> -static struct cpuidle_state ivb_cstates[CPUIDLE_STATE_MAX] = {
> +static struct cpuidle_state ivb_cstates[] = {
> {
> .name = "C1-IVB",
> .desc = "MWAIT 0x00",
> @@ -236,7 +236,7 @@ static struct cpuidle_state
> ivb_cstates[CPUIDLE_STATE_MAX] = {
> .enter = NULL }
> };
>
> -static struct cpuidle_state hsw_cstates[CPUIDLE_STATE_MAX] = {
> +static struct cpuidle_state hsw_cstates[] = {
> {
> .name = "C1-HSW",
> .desc = "MWAIT 0x00",
> @@ -297,7 +297,7 @@ static struct cpuidle_state
> hsw_cstates[CPUIDLE_STATE_MAX] = {
> .enter = NULL }
> };
>
> -static struct cpuidle_state atom_cstates[CPUIDLE_STATE_MAX] = {
> +static struct cpuidle_state atom_cstates[] = {
> {
> .name = "C1E-ATM",
> .desc = "MWAIT 0x00",
> @@ -628,7 +628,7 @@ static int intel_idle_cpu_init(int cpu)
> int num_substates, mwait_hint, mwait_cstate, mwait_substate;
>
> if (cpuidle_state_table[cstate].enter == NULL)
> - continue;
> + break;
>
> if (cstate + 1 > max_cstate) {
> printk(PREFIX "max_cstate %d reached\n", max_cstate);
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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