[PATCH v3 43/51] intel_idle: Add force_irq_on module param

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



For testing purposes.

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Acked-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
Tested-by: Tony Lindgren <tony@xxxxxxxxxxx>
Tested-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
---
 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) {


_______________________________________________
Virtualization mailing list
Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linuxfoundation.org/mailman/listinfo/virtualization



[Index of Archives]     [KVM Development]     [Libvirt Development]     [Libvirt Users]     [CentOS Virtualization]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [Kernel Newbies]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux