[Crash-utility] Re: [RFC] Crash extension for SystemTap

Satoru MORIYA <satoru.moriya.br(a)hitachi.com&gt; writes: This module is now built as a part of systemtap. The "staplog.so" file is installed into $prefix/lib/systemtap, for loading using crash's "extend" command. As a part of the import, I took the liberty of renaming it "staplog". I could not make it print data from a crash session running against the live kernel [1], so it still needs more work. It would be nice if it also learned to operate against the plain, non-"-b", tracing backend. - FChE [1] % stap -b something.stp & % sudo crash crash 4.0-4.3 [...] KERNEL: /usr/lib/debug/lib/modules/2.6.21-1.3194.fc7debug/vmlinux DUMPFILE: /dev/crash CPUS: 4 DATE: Mon Jul 2 15:34:21 2007 UPTIME: 20 days, 00:56:36 LOAD AVERAGE: 2.97, 1.62, 1.25 TASKS: 268 NODENAME: super.elastic.org RELEASE: 2.6.21-1.3194.fc7debug VERSION: #1 SMP Wed May 23 22:12:03 EDT 2007 MACHINE: x86_64 (2659 Mhz) MEMORY: 4 GB [...] crash> extend ..../staplog.so ..../staplog.so: shared object loaded crash> staplog stap_96acf0ec9a0b8e844b920b552e0b992a_232 staplog: Failed to find _stp_utt/_stp_chan. crash> crash> quit