Power management stat : add verbosity level for MBED_SLEEP_TRACING_ENABLED #14610

jeromecoutant · 2021-04-30T12:42:24Z

Summary of changes

Using MBED_SLEEP_TRACING_ENABLED is not reliable with STM32 targets.

See discussions in #11497 #14580 ...

[edit]
~~This new MBED_SLEEP_STAT_ENABLED macro is the same one~~
~~removing prints at each sleep_manager_lock/unlock_deep_sleep~~

deepsleep stats can be enabled now with json config
default configuration is not changed (full verbosity adding a console line for each lock/unlock command)
except for STM32 targets, verbosity is reduced by default

Impact of changes

Migration actions required

Documentation

STM32 readme file is updated

Pull request type

[x] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

Test results

[] No Tests required for this change (E.g docs only update)
[x] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

Reviewers

@ARMmbed/team-st-mcd

ciarmcom · 2021-04-30T13:00:20Z

@jeromecoutant, thank you for your changes.
@ARMmbed/mbed-os-maintainers please review.

0xc0170 · 2021-04-30T14:46:05Z

platform/include/platform/mbed_power_mgmt.h

@@ -90,7 +90,7 @@ extern "C" {
 *
 */

-#ifdef MBED_SLEEP_TRACING_ENABLED
+#if defined(MBED_SLEEP_TRACING_ENABLED) || defined(MBED_SLEEP_STAT_ENABLED)


I need to read the discussion but still this one commit does not explain one why there would be a need for additional macro (there is || between so one of them needs t obe truth at least,why ? ).

Because ST LPTICKER API calls the deepsleep lock function very very often:
https://github.com/ARMmbed/mbed-os/blob/master/targets/TARGET_STM/lp_ticker.c#L471

So I let the current macro as it is and as it is described in mbed-os doc,
and created a new one, a bit less verbose.

0xc0170 · 2021-04-30T14:46:37Z

targets/TARGET_STM/README.md

+- deepsleep can also be disabled by application or drivers using sleep_manager_lock_deep_sleep()
+
+To enable the tracing, it is recommended to **not** define MBED_SLEEP_TRACING_ENABLED macro,
+but **MBED_SLEEP_STAT_ENABLED** macro.


To my question above, why is not recommended/ Shoudn't the one be fixed rather than create two (it might confuse people) ?

Add here some details why stats only.

ciarmcom · 2021-04-30T15:00:20Z

@jeromecoutant, thank you for your changes.
@ARMmbed/mbed-os-maintainers please review.

0xc0170 · 2021-05-03T13:42:09Z

Because ST LPTICKER API calls the deepsleep lock function very very often:

#11497 (comment) - if this is required to be so, locking so often, then printing is correct. The problem is how to filter these as there are too many locks?

#14580 - how is this related to the issue?

We will need to review this in detail. I don't believe adding a new macro is an answer. I find it confusing which one I should define and why.

jeromecoutant · 2021-05-03T14:55:19Z

#14580 - how is this related to the issue?

Not directly related to this issue. This issue confirms that we need something to be able to trace sleep lock with STM32 use case.

We will need to review this in detail. I don't believe adding a new macro is an answer. I find it confusing which one I should define and why.

The default macro is not usable for STM32.

ciarmcom · 2021-05-10T15:50:20Z

This pull request has automatically been marked as stale because it has had no recent activity. @ARMmbed/mbed-os-maintainers, please complete review of the changes to move the PR forward. Thank you for your contributions.

0xc0170

MBED_SLEEP_STATS_ENABLED could it be named similarly as the functions in the power mgmt

Not against introducing the stats only. My understanding is tracing in this case for stm32 is way to verbose (happens very frequently) and thus can't be used. Stats however are useful information and can be printed. What a user should do if they need tracing (are there any options for them) ?

Please review @ARMmbed/mbed-os-core review

0xc0170 · 2021-05-18T09:23:27Z

platform/source/mbed_power_mgmt.c

@@ -239,6 +243,9 @@ void sleep_manager_sleep_auto(void)
 #endif
        hal_deepsleep();
    } else {
+#if defined(MBED_SLEEP_STAT_ENABLED)


you get stats at the top of this function, do we need to print this again when only sleeping?

0xc0170 · 2021-05-18T09:27:44Z

targets/TARGET_STM/README.md

+- deepsleep can also be disabled by application or drivers using sleep_manager_lock_deep_sleep()
+
+To enable the tracing, it is recommended to **not** define MBED_SLEEP_TRACING_ENABLED macro,
+but **MBED_SLEEP_STAT_ENABLED** macro.


Add here some details why stats only.

ciarmcom · 2021-05-21T11:50:37Z

This pull request has automatically been marked as stale because it has had no recent activity. , please complete review of the changes to move the PR forward. Thank you for your contributions.

ciarmcom · 2021-06-03T15:50:47Z

This pull request has automatically been marked as stale because it has had no recent activity. @jeromecoutant, please carry out any necessary work to get the changes merged. Thank you for your contributions.

jeromecoutant · 2021-10-28T16:10:58Z

ping :-)

0xc0170

The printf there with allo does not provide sufficient meaning to a reader. What should be printed?

0xc0170 · 2021-10-15T14:01:15Z

platform/source/mbed_power_mgmt.c

+            }
+
+            if (sleep_stats[i].identifier[0] == '\0') {
+                mbed_error_printf("allo");


Why is it allo ? Should this be something more meaningful ?

I reviewed this but kept the review pending (not certain why it was not posted).

…ABLED Full verbosity is adding a console line for each lock/unlock API call - stats can be enabled with json config - default configuration is full verbosity and add a console line for each lock/unlock command - for STM32 targets, verbosity is reduced by default

Pull request has been modified.

mbed-ci · 2021-11-08T10:49:12Z

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0xc0170 · 2021-11-08T13:31:42Z

@LDong-Arm Can you please review?

LDong-Arm

LGTM as per previous discussion regarding the documentation of the new config.

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jeromecoutant mentioned this pull request May 17, 2021

STM32: add information in README for SLEEP feature #14670

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jeromecoutant added 2 commits November 8, 2021 09:46

STM32: readme update for MBED_SLEEP_TRACING_ENABLED

8e26a05

jeromecoutant force-pushed the DEV_SLEEP_TRACE branch from 426c57c to 8e26a05 Compare November 8, 2021 08:47

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Power management stat : add verbosity level for MBED_SLEEP_TRACING_ENABLED #14610

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Power management stat : add verbosity level for MBED_SLEEP_TRACING_ENABLED #14610

Power management stat : add verbosity level for MBED_SLEEP_TRACING_ENABLED #14610

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Summary of changes

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