On 12/20/2013 07:47 PM, Bartlomiej Zolnierkiewicz wrote:
If the system is booted with some CPUs offline C1E promotion disable quirk
won't be applied because on_each_cpu() in intel_idle_cpuidle_driver_init()
operates only on online CPUs. Fix it by adding the C1E promotion disable
handling to intel_idle_cpu_init() (which is also called during CPU_ONLINE
operation).
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Cc: Len Brown <[email protected]>
Reviewed-by: Daniel Lezcano <[email protected]>
---
drivers/idle/intel_idle.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 92d1206..38da3fb 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -683,6 +683,9 @@ static int intel_idle_cpu_init(int cpu)
if (icpu->auto_demotion_disable_flags)
smp_call_function_single(cpu, auto_demotion_disable, NULL, 1);
+ if (icpu->disable_promotion_to_c1e)
+ smp_call_function_single(cpu, c1e_promotion_disable, NULL, 1);
+
return 0;
}
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