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authorDeepthi Dharwar <deepthi@linux.vnet.ibm.com>2014-01-14 11:56:28 +0100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-01-29 07:02:23 +0100
commitbf7f61f2dfc5c5764e862bee317a5a227091d0d2 (patch)
tree8eef750018a9defe5729129a66335a5b076cb1f9 /drivers/cpuidle
parentpowerpc/pseries/cpuidle: Make cpuidle-pseries backend driver a non-module. (diff)
downloadlinux-bf7f61f2dfc5c5764e862bee317a5a227091d0d2.tar.xz
linux-bf7f61f2dfc5c5764e862bee317a5a227091d0d2.zip
powerpc/pseries/cpuidle: Remove MAX_IDLE_STATE macro.
This patch removes the usage of MAX_IDLE_STATE macro and dead code around it. The number of states are determined at run time based on the cpuidle state table selected on a given platform Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/cpuidle')
-rw-r--r--drivers/cpuidle/cpuidle-pseries.c28
1 files changed, 10 insertions, 18 deletions
diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c
index 5e13f6ce2271..bb56091685d3 100644
--- a/drivers/cpuidle/cpuidle-pseries.c
+++ b/drivers/cpuidle/cpuidle-pseries.c
@@ -24,9 +24,7 @@ struct cpuidle_driver pseries_idle_driver = {
.owner = THIS_MODULE,
};
-#define MAX_IDLE_STATE_COUNT 2
-
-static int max_idle_state = MAX_IDLE_STATE_COUNT - 1;
+static int max_idle_state;
static struct cpuidle_state *cpuidle_state_table;
static inline void idle_loop_prolog(unsigned long *in_purr)
@@ -134,7 +132,7 @@ static int shared_cede_loop(struct cpuidle_device *dev,
/*
* States for dedicated partition case.
*/
-static struct cpuidle_state dedicated_states[MAX_IDLE_STATE_COUNT] = {
+static struct cpuidle_state dedicated_states[] = {
{ /* Snooze */
.name = "snooze",
.desc = "snooze",
@@ -154,7 +152,7 @@ static struct cpuidle_state dedicated_states[MAX_IDLE_STATE_COUNT] = {
/*
* States for shared partition case.
*/
-static struct cpuidle_state shared_states[MAX_IDLE_STATE_COUNT] = {
+static struct cpuidle_state shared_states[] = {
{ /* Shared Cede */
.name = "Shared Cede",
.desc = "Shared Cede",
@@ -225,12 +223,8 @@ static int pseries_cpuidle_driver_init(void)
drv->state_count = 0;
- for (idle_state = 0; idle_state < MAX_IDLE_STATE_COUNT; ++idle_state) {
-
- if (idle_state > max_idle_state)
- break;
-
- /* is the state not enabled? */
+ for (idle_state = 0; idle_state < max_idle_state; ++idle_state) {
+ /* Is the state not enabled? */
if (cpuidle_state_table[idle_state].enter == NULL)
continue;
@@ -253,16 +247,14 @@ static int pseries_idle_probe(void)
if (cpuidle_disable != IDLE_NO_OVERRIDE)
return -ENODEV;
- if (max_idle_state == 0) {
- printk(KERN_DEBUG "pseries processor idle disabled.\n");
- return -EPERM;
- }
-
if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
- if (lppaca_shared_proc(get_lppaca()))
+ if (lppaca_shared_proc(get_lppaca())) {
cpuidle_state_table = shared_states;
- else
+ max_idle_state = ARRAY_SIZE(shared_states);
+ } else {
cpuidle_state_table = dedicated_states;
+ max_idle_state = ARRAY_SIZE(dedicated_states);
+ }
} else
return -ENODEV;