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[Bug libc/19767] New: vdso is not used with static linking


https://sourceware.org/bugzilla/show_bug.cgi?id=19767

            Bug ID: 19767
           Summary: vdso is not used with static linking
           Product: glibc
           Version: 2.22
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: nszabolcs at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

vdso mechanism now uses ifunc dispatch which happens
too early in the static linking case so the vdso
mechanism is disabled even though the vdso mechanism
could easily work with static linking too.

this means clock_gettime etc calls will go through
slow syscalls in case of static linking.

bug 12813 was closed assuming performance does not
matter of static linking, but i think it does.

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