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(parent: ba7276f) | patch
runtime: lock module_refresh with mutex
authorJonathan Lebon <jlebon@redhat.com>
Fri, 6 Jun 2014 17:52:39 +0000 (13:52 -0400)
committerJonathan Lebon <jlebon@redhat.com>
Mon, 11 Aug 2014 19:40:00 +0000 (15:40 -0400)
commit9c91d9d5e7027e552c8e334e94b5444b742a6eb2
tree1677b7638fbec8f4db9cfe6b217beba895b6b47etree
parentba7276fa26711e1e822144f4dc1da8126076bc75commit | diff
runtime: lock module_refresh with mutex

If STP_ON_THE_FLY is enabled, then we need to ensure that
systemtap_module_refresh() is never run concurrently. Since we use a
workqueue, no concurrency can occur from arm/disarm refreshes alone.
However, the module notifier could fire at any time.
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systemtap: system-wide probe/trace tool
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