On 06/27/2016 05:03 PM, Sudeep Holla wrote:
Hi Daniel,
On 27/06/16 15:33, Daniel Lezcano wrote:
On 06/14/2016 04:48 PM, Sudeep Holla wrote:
Now that ACPI processor idle driver supports LPI(Low Power Idle), lets
enable ACPI_PROCESSOR_IDLE for ARM64 too.
This patch just removes the IA64 and X86 dependency on
ACPI_PROCESSOR_IDLE
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
---
Hi Sudeep,
now that ACPI processor supports ARM64 did you check the
CPUIDLE_DRIVER_STATE_START trick in the code and its derivative ?
No, that is used only for C-State and ARM64 doesn't support it.
Patch 1/5 puts all the C-State code under #ifdef so that it's not
compiled on ARM64.
I deleted the patch 2/5 but there is a place where:
Sorry, I don't follow what you mean by that.
I meant I just deleted from my mailbox the patch 2/5, so I can't do
inline comment.
if (max_cstate=0)
max_cstate=1;
Probably this is because the POLL state is inserted, so there is always
an idle state. But for ARM, that is not the case.
Yes
Also, there are some places where the idle state index begins to 1. I
think it should be 0 for ARM.
Yes for LPI, it does start from 0.
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