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semantic error
- From: domenico dot dileo at unina dot it
- To: systemtap at sourceware dot org
- Date: Thu, 20 Sep 2012 00:03:05 +0200
- Subject: semantic error
I would like to set a probe point for the following functions:
fail_make_request_debugfs@block/ll_rw_blk.c
should_fail_request@block/ll_rw_blk.c
should_fail_slab@mm/slab.c
fail_slab_debug_fs@mm/slab.c
These functions are enabled only if the kernel
is configure with fault injection modules (e.g.,
in the . config the CONFIG_FAIL_SLAB = y)
in order to assign a probe to them, I use the command
probe kernel.function("fail_make_request_debugfs@block/ll_rw_blk.c").call
Similarly for the other functions.
When running, stap prompts the error message "semantic error no match
while resolving probe points... "
Additional notes:
- The former functions appear as symbols in
proc/kallsyms.
- I use stap_v1.6 and a linux kernel 2.6.24.
Thank you for your help.
Domenico Di Leo, PhD student, Universit? degli Studi di Napoli Federico II
Ph: +39 081 676770
Fax: +39 081 676574
Web: http://wpage.unina.it/domenico.dileo