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 <b.zolnierkie@xxxxxxxxxxx> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> Cc: Len Brown <lenb@xxxxxxxxxx>
Reviewed-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
--- 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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