[Bug translator/14689] New: missing 'syscalls' tracepoints

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

http://sourceware.org/bugzilla/show_bug.cgi?id=14689

             Bug #: 14689
           Summary: missing 'syscalls' tracepoints
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: dsmith@redhat.com
    Classification: Unclassified


Systemtap can only find less than half of the tracepoints perf knows about:

----
# perf list tracepoint | wc -l
924
# stap -l 'kernel.trace("*")' | wc -l
409
----

The majority of these missing tracepoints are the 'syscalls' family of
tracepoints:

----
# perf list tracepoint | grep ' syscalls:' | wc -l
556
# perf list tracepoint | grep ' syscalls:' | head
  syscalls:sys_enter_socket                          [Tracepoint event]
  syscalls:sys_exit_socket                           [Tracepoint event]
  syscalls:sys_enter_socketpair                      [Tracepoint event]
  syscalls:sys_exit_socketpair                       [Tracepoint event]
  syscalls:sys_enter_bind                            [Tracepoint event]
  syscalls:sys_exit_bind                             [Tracepoint event]
  syscalls:sys_enter_listen                          [Tracepoint event]
  syscalls:sys_exit_listen                           [Tracepoint event]
  syscalls:sys_enter_accept4                         [Tracepoint event]
  syscalls:sys_exit_accept4                          [Tracepoint event]
----

Systemtap can't find those tracepoints:

----
# stap -l 'kernel.trace("sys_enter_")'
# stap -l 'kernel.trace("sys_exit_")'
----

These tracepoints only exist if CONFIG_FTRACE_SYSCALLS is enabled. If
CONFIG_FTRACE_SYSCALLS is enabled, some macro magic automatically creates these
tracepoints in the SYSCALL_DEFINEn macros.

(Note that this problem might be related to bug #10745)

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.