CVS commit: src/sys/dev/sysmon

["Ryota Ozaki" <ozaki-r%netbsd.org@localhost>]

Module Name:    src
Committed By:   ozaki-r
Date:           Sat Nov 22 15:09:30 UTC 2014

Modified Files:
        src/sys/dev/sysmon: sysmon_envsys_events.c

Log Message:
Replace callout_stop with callout_halt

In order to call callout_destroy for a callout safely, we have to ensure
the function of the callout is not running and pending. To do so, we should
use callout_halt, not callout_stop.

In this case, we need to pass an interlock to callout_halt to wait for
the callout complete. And also we make sure that SME_CALLOUT_INITIALIZED
is unset before calling callout_halt to prevent the callout from calling
callout_schedule. This is the same as what we did in sys/netinet6/mld6.c@1.61.

Reviewed by riastradh@.


To generate a diff of this commit:
cvs rdiff -u -r1.111 -r1.112 src/sys/dev/sysmon/sysmon_envsys_events.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.