K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2017-01-24T22:00:16.414910Z
K 7
svn:log
V 390
hwpmc: partially depessimize munmap handling if the module is not loaded

HWPMC_HOOKS is enabled in GENERIC and triggers some work avoidable in the
common (module not loaded) case.

In particular this avoids permission checks + lock downgrade
singlethreaded and in cases were an executable mapping is found the pmc
sx lock is no longer bounced.

Note this is a band aid.

MFC after:	1 week

END