On Mon, Jul 27 2020 at 18:45 -0600, Stephen Boyd wrote:
Quoting Lina Iyer (2020-07-24 09:28:25)
On Fri, Jul 24 2020 at 03:03 -0600, Rajendra Nayak wrote:
>Hi Maulik/Lina,
>
>On 7/23/2020 11:36 PM, Stanimir Varbanov wrote:
>>Hi Rajendra,
>>
>>After applying 2,3 and 4/5 patches on linaro-integration v5.8-rc2 I see
>>below messages on db845:
>>
>>qcom-venus aa00000.video-codec: dev_pm_opp_set_rate: failed to find
>>current OPP for freq 533000097 (-34)
>>
>>^^^ This one is new.
>>
>>qcom_rpmh TCS Busy, retrying RPMH message send: addr=0x30000
>>
>>^^^ and this message is annoying, can we make it pr_debug in rpmh?
>
How annoyingly often do you see this message?
Usually, this is an indication of bad system state either on remote
processors in the SoC or in Linux itself. On a smooth sailing build you
should not see this 'warning'.
>Would you be fine with moving this message to a pr_debug? Its currently
>a pr_info_ratelimited()
I would rather not, moving this out of sight will mask a lot serious
issues that otherwise bring attention to the developers.
I removed this warning message in my patch posted to the list[1]. If
it's a serious problem then I suppose a timeout is more appropriate, on
the order of several seconds or so and then a pr_warn() and bail out of
the async call with an error.
The warning used to capture issues that happen within a second and it
helps capture system related issues. Timing out after many seconds
overlooks the system issues that generally tend to resolve itself, but
nevertheless need to be investigated.
--Lina
[1] https://lore.kernel.org/r/20200724211711.810009-1-sboyd@xxxxxxxxxx
