trace-cmd: Fix overwriting of trace_clock file in trace.dat
trace-cmd: Fix overwriting of trace_clock file in trace.dat

The trace_clock file was stored after the offsets were defined
for the cpu data but before the cpu data content. The only reason it
didn't fail immediately was due to the page aligning of the cpu data
content.

  offsets set with lseek();

  <cpu meta data>

  <trace_clock data>

  [page aligned]

  <cpu data content>

If the page align did not give enough room between the cpu meta data
and the trace_clock data, the trace clock data was overwritten, and
the data file was corrupted.

Signed-off-by: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>

bigzz/trace-cmd,bigzz/trace-cmd