[Bug translator/6902] New: optimize use of elfutils offline module search

["fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

A probe such as 'probe kernel.function("foo") {}' currently
performs a full offline module search, which for a combined
kernel object/source tree can take a noticeable amount of time
(and inode cache space).  It's wasted effort.

See also bug #3498, but maybe we can get away with not using
a clever report_kernel_offline predicate function, but rather
perhaps we can do a single dwfl report per named module, and
save the resulting dwfl into a cache - like we do for userspace
dwfl's already.

-- 
           Summary: optimize use of elfutils offline module search
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: minor
          Priority: P2
         Component: translator
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: fche at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=6902

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