Public bug reported:
May be an unclear man page description or a bug. Tested on up to date
ubuntu 18.04.4 LTS and 19.10 The command in question is:
trace-cmd report -f
>From the man page:
-f: This outputs the list of functions that have been recorded in the
file.
Expected result: Lists the functions that were traced (recorded in the
.dat file)
Actual result: no matter what command was traced for the .dat, lists the
same very large set of functions which appears to be similar to the
entire /proc/kallsyms listing or all traceable functions, not just the
ones that were traced. Without using the -f command, the report appears
to be correct.
Note, the .dat is being generated by:
trace-cmd record -p function_graph -F <command>
where <command> is something like true, ls, ping, or those but in a loop
** Affects: trace-cmd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1868900
Title:
"trace-cmd report -f" functionality different than expected
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