Re: BUG: perf error on syscalls for powerpc64.

Sukadev Bhattiprolu
2015-07-17T01:52:19Z

Zumeng Chen [zumeng.chen@gmail.com] wrote:
| 3. What I have seen in 3.14.x kernel,
| ======================
| And so far, no more difference to 4.x kernel from me about this part if
| I'm right.
|
| *) With 1028ccf5
|
| perf list|grep -i syscall got me nothing.
|
|
| *) Without 1028ccf5
| root@localhost:~# perf list|grep -i syscall
| 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]
| ... ...

Are you seeing this on big-endian or little-endian system?

IIRC, I saw the opposite behavior on an LE system a few months ago.
i.e. without 1028ccf5, 'perf listf|grep syscall' failed.

Applying 1028ccf5, seemed to fix it.

Sukadev