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Subject[PATCH v2 41/44] intel_idle: Add force_irq_on module param
For testing purposes.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
drivers/idle/intel_idle.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1787,6 +1787,9 @@ static bool __init intel_idle_verify_cst
return true;
}

+static bool force_irq_on __read_mostly;
+module_param(force_irq_on, bool, 0444);
+
static void __init intel_idle_init_cstates_icpu(struct cpuidle_driver *drv)
{
int cstate;
@@ -1838,8 +1841,10 @@ static void __init intel_idle_init_cstat
/* Structure copy. */
drv->states[drv->state_count] = cpuidle_state_table[cstate];

- if (cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_IRQ_ENABLE)
+ if ((cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_IRQ_ENABLE) || force_irq_on) {
+ printk("intel_idle: forced intel_idle_irq for state %d\n", cstate);
drv->states[drv->state_count].enter = intel_idle_irq;
+ }

if (cpu_feature_enabled(X86_FEATURE_KERNEL_IBRS) &&
cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_IBRS) {

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