[Bug tapsets/13456] tapset/nd_syscalls.stp:# FIXME: doesn't handle sys_epoll_create1()

dsmith at redhat dot com sourceware-bugzilla@sourceware.org
Wed Nov 30 18:45:00 GMT 2011


http://sourceware.org/bugzilla/show_bug.cgi?id=13456

David Smith <dsmith at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dsmith at redhat dot com
         Depends on|                            |11424

--- Comment #1 from David Smith <dsmith at redhat dot com> 2011-11-30 18:43:42 UTC ---
The reason why it is done this way in syscalls.stp is that in the kernel
sys_epoll_create is just a wrapper around sys_epoll_create1.  This way we
ignore the sys_epoll_create call, and only catch the sys_epoll_create1 call on
kernels with sys_epoll_create1.

Unfortunately, as bug #11424 notes, '!' (optional and sufficient) doesn't work
for kprobe.function probes.  So, the above logic will be difficult to duplicate
in tapset/nd_syscalls.stp.

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