README: tweaks

README.md

@@ -4,12 +4,11 @@ Userland CPU frequency scheduling for OpenBSD >= 7.1
 
 # TLDR
 
-- clone this repository
-- as root `make install`
+- `pkg_add obsdfreqd`
 - as root `rcctl enable obsdfreqd` and `rcctl stop apmd ; rcctl disable apmd`
 - as root `rcctl start obsdfreqd`
 - apmd can be kept but not with flag `-A`
-- most interesting flag for end users is `-T`
+- if any tuning is needed, it may be `-T` for temperature limit
 
 # Compilation
 
@@ -19,10 +18,25 @@ As easy as `make`
 
 Run `obsdfreqd` as root, quit with `Ctrl+C`.
 
-# Installation
+# Source installation
 
-`make install` as root, enable the service using `rcctl enable
-obsdfreqd`.
+`make install` as root, enable the service using `rcctl enable obsdfreqd`.
+
+Create `/etc/rc.d/obsdfreqd` with this content and make it executable:
+
+```
+#!/bin/ksh
+
+daemon="/usr/local/sbin/obsdfreqd"
+
+. /etc/rc.d/rc.subr
+
+pexp="${daemon}.*"
+rc_reload=NO
+rc_bg=YES
+
+rc_cmd $1
+```
 
 Start the service with `rcctl start obsdfreqd`.
 
@@ -42,6 +56,7 @@ Parameters are applied when both plugged on the wall or on battery, parameters c
 - `-s stepfrequency` sets the percent of frequency added every cycle when increasing, 10% is default
 - `-t timefreq` sets the milliseconds between each poll, 300 is the default
 - `-T maxtemperature` sets the temperature threshold under which the maximum frequency will be temporary lowered until the CPU cools down
+- `-S sensor` specify a sensor (using its sysctl path) to use with `-T`
 
 **Example**: