On 2019.10.16 03:41 Rafael J. Wysocki wrote:

... deleted ...

Hi Rafael,

Not sure, but I think it is this one that
causes complaining when I try to set the
intel_pstate driver to passive mode.
I started from active mode, powersave governor,
no HWP.

Kernel: 5.4-rc7

I did not go back and try previous 5.4 RCs.
I did try kernel 5.3-rc8, because I already had
it installed, and it worked fine.

I use a script (for years), run as sudo:

doug@s15:~/temp$ cat set_cpu_passive
#! /bin/bash
cat /sys/devices/system/cpu/intel_pstate/status
echo passive > /sys/devices/system/cpu/intel_pstate/status
cat /sys/devices/system/cpu/intel_pstate/status

And I get this (very small excerpt):

freq_qos_add_request() called for active request
WARNING: CPU: 1 PID: 2758 at kernel/power/qos.c:763 freq_qos_add_request+0x4c/0xa0
CPU: 1 PID: 2758 Comm: set_cpu_passive Not tainted 5.4.0-rc7-stock #727
Failed to add freq constraint for CPU0 (-22)

freq_qos_add_request() called for active request
WARNING: CPU: 1 PID: 2758 at kernel/power/qos.c:763 freq_qos_add_request+0x4c/0xa0
CPU: 1 PID: 2758 Comm: set_cpu_passive Tainted: G        W         5.4.0-rc7-stock #727
Failed to add freq constraint for CPU1 (-22)

...

I'll attach the whole thing, but it will likely get removed
from the general list e-mails.

... Doug