Messages in this thread | | | Date | Thu, 7 Sep 2006 13:48:50 -0700 | From | Andrew Morton <> | Subject | Re: [RFC] Linux Kernel Dump Test Module |
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On Thu, 7 Sep 2006 19:23:29 +0530 Ankita Garg <ankita@in.ibm.com> wrote:
> Please find below a patch for a simple module to test Linux Kernel Dump > mechanism. This module uses jprobes to install/activate pre-defined crash > points. At different crash points, various types of crashing scenarios > are created like a BUG(), panic(), exception, recursive loop and stack > overflow. The user can activate a crash point with specific type by > providing parameters at the time of module insertion. Please see the file > header for usage information. The module is based on the Linux Kernel > Dump Test Tool by Fernando <http://lkdtt.sourceforge.net>. > > This module could be merged with mainline. Jprobes is used here so that the > context in which crash point is hit, could be maintained. This implements > all the crash points as done by LKDTT except the one in the middle of > tasklet_action().
"could be merged with mainline": why "could"? What would be the disadvantages of doing this?
I think having test code like this in mainline is a good idea, particularly for a subsystem like [kj]probes.
It's a bit regrettable that the code "knows" about particular not-exported, arch-specific core kernel functions, but I guess those don't change very often, so we won't be forever patching this module.
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