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PR/52533 CVS commit: [netbsd-8] src/sys/dev/sysmon

The following reply was made to PR kern/52533; it has been noted by GNATS.

From: "Soren Jacobsen" <>
Subject: PR/52533 CVS commit: [netbsd-8] src/sys/dev/sysmon
Date: Sat, 23 Sep 2017 17:22:49 +0000

 Module Name:	src
 Committed By:	snj
 Date:		Sat Sep 23 17:22:49 UTC 2017
 Modified Files:
 	src/sys/dev/sysmon [netbsd-8]: sysmon_envsys.c sysmon_envsys_events.c
 Log Message:
 Pull up following revision(s) (requested by pgoyette in ticket #281):
 	sys/dev/sysmon/sysmon_envsys.c: 1.140-1.141
 	sys/dev/sysmon/sysmon_envsys_events.c: 1.120-1.121
 	sys/dev/sysmon/sysmonvar.h: 1.50
 Fixes a problem that some driver(e.g. acpitz(4) or coretemp(5)) which
 use sysmon_envsys sleep waiting at "rndsrc" when "drvctl -d".
 Don't call rnd_detach_source() in sme_remove_event() which is called
 from sme_event_unregister_all(). Instead, call rnd_detach_source() in
 sysmon_envsys_sensor_detach() and call sysmon_envsys_sensor_detach()
 before sme_event_unregister_sensor(). Each sensor(envsys_data) has each
 rnd_src, but some sme_events point to the same rnd_src in a sensor.
 Calling rnd_detach_souce() twice with the same rnd_src brokes a reference
 count in rnd_src. OK'd by pgoyette@.
 Improve tracking of the state of an event's callout, and protect all
 queries or modifications of the state with the sme_mtx mutex.
 Detach the rndsrc before re-attaching it (with potentially new values).
 Clean up some lock-ordering issues.
 And a couple of KNF issues for good measure!
 Should address PR kern/52533
 To generate a diff of this commit:
 cvs rdiff -u -r1.139 -r1.139.10.1 src/sys/dev/sysmon/sysmon_envsys.c
 cvs rdiff -u -r1.119 -r1.119.2.1 src/sys/dev/sysmon/sysmon_envsys_events.c
 cvs rdiff -u -r1.49 -r1.49.10.1 src/sys/dev/sysmon/sysmonvar.h
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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