[Bug runtime/11592] New: sdt.h should have a 'disable-semaphores' override option

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

See https://bugzilla.gnome.org/show_bug.cgi?id=606044
for a situation where semaphores constitute a performance
regression.  (In this case, argument setup is small compared
to the semaphore value check.)

Unless we can automate per-marker semaphore presence, we should
provide an override capability.  It may need to be nothing larger
than allowing an application .c file to define

#define STAP_NO_SEMAPHORES

which then the dtrace.in-generated script would observe and avoid
defining STAP_HAS_SEMAPHORES.

-- 
           Summary: sdt.h should have a 'disable-semaphores' override option
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: fche at redhat dot com
                CC: scox at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=11592

------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.