FS#17756 - [kernel26] WCHAN info in ps

Attached to Project: Arch Linux
Opened by Dimitrios Apostolou (jimis) - Friday, 08 January 2010, 16:23 GMT
Last edited by Tobias Powalowski (tpowa) - Saturday, 27 February 2010, 14:47 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture i686
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 3
Private No


On arch i686, WCHAN info is not displayed in tools like ps or top, only "?" is returned. This is because the kernel is compiled without CONFIG_FRAME_POINTER. In all other distros I know wchan info is properly displayed, as it is important for debugging frozen programs.

As I already proposed in the mailing list ( http://mailman.archlinux.org/pipermail/arch-general/2010-January/009977.html ), I think this option should be enabled.

Steps to reproduce: cat /proc/*/wchan
This task depends upon

Closed by  Tobias Powalowski (tpowa)
Saturday, 27 February 2010, 14:47 GMT
Reason for closing:  Fixed
Additional comments about closing:  2.6.33
Comment by Tobias Powalowski (tpowa) - Monday, 18 January 2010, 22:05 GMT
delayed for 2.6.33, has potential to break binary modules.