montblanc:config: update fan service config

[QiuyunXie]

Motivation

1. Update Montblanc fan service config for temp sensor overheat safety case. For inlet temp sensor, add entries to the linear table to cover the temp sensor overheat safety case. For those sensors calculate PWM with PID algorithm, as aligned with Meta thermal, the PID algorithm already have appropriate overheat safety. We can ignore additional sensor overheat safety for those sensors.
2. Add fan watchdog in fanservice config.

Test plan

1. For temp sensor overheat safety case, thermal team has tested it, the test result is as expected.
2. For fan watchdog, Firstly, run fan service, check the fan speed; Then stop fan service, when the fan service is stopped for more than 30 seconds, check the fan speed changes. (For testing purposes, the fan watchdog timeout is temporarily set to 30 seconds). Fan speed log is as below. From the log, after fan service was stopped for more than 30 seconds, the FAN PWM changed to 24. It's as expected. [root@localhost hwmon3]# date +"%T"; cat ./pwm1; cat ./pwm2; cat ./pwm3; cat ./pwm4; cat ./pwm5; cat ./pwm6; cat ./pwm7; cat ./pwm8; cat ./fan_input 16:21:07 20 20 20 20 20 20 20 20 7200 7650 7200 7650 7350 7650 7200 7650 7200 7500 7200 7650 7200 7500 7200 7500 [root@localhost hwmon3]# date +"%T"; cat ./pwm1; cat ./pwm2; cat ./pwm3; cat ./pwm4; cat ./pwm5; cat ./pwm6; cat ./pwm7; cat ./pwm8; cat ./fan_input 16:21:29 20 20 20 20 20 20 20 20 7200 7650 7200 7500 7200 7650 7200 7650 7200 7500 7200 7650 7050 7650 7200 7650 [root@localhost hwmon3]# date +"%T"; cat ./pwm1; cat ./pwm2; cat ./pwm3; cat ./pwm4; cat ./pwm5; cat ./pwm6; cat ./pwm7; cat ./pwm8; cat ./fan_input 16:21:34 20 20 20 20 20 20 20 20 7200 7650 7200 7650 7200 7500 7200 7650 7200 7650 7200 7650 7200 7500 7200 7650 [root@localhost hwmon3]# date +"%T"; cat ./pwm1; cat ./pwm2; cat ./pwm3; cat ./pwm4; cat ./pwm5; cat ./pwm6; cat ./pwm7; cat ./pwm8; cat ./fan_input 16:21:37 24 24 24 24 24 24 24 24 7800 8400 7650 8400 7800 8400 7650 8250 7650 8250 7650 8250 7650 8250 7650 8400 [root@localhost hwmon3]# date +"%T"; cat ./pwm1; cat ./pwm2; cat ./pwm3; cat ./pwm4; cat ./pwm5; cat ./pwm6; cat ./pwm7; cat ./pwm8; cat ./fan*_input 16:21:42 24 24 24 24 24 24 24 24 8400 9000 8400 9000 8400 9000 8400 9000 8400 9000 8250 9000 8400 9000 8250 9000

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@mikechoifb has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

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@mikechoifb merged this pull request in facebook/fboss@01b043ca484cf56aaf23762d765a046afd12446e.