On Thu, 21 Apr 2011 18:37:24 -0700 Chuck Tuffli <ctuf...@gmail.com> wrote:
> (Note I'm new to DTrace, so this may be ignorance on my part) > > I have re-built a stock 8.2 kernel and enabled dtrace as per the > handbook (including WITH_CTF=1) and have built a kld also using > WITH_CTF=1. When I run the following > > dtrace -n"bus_release_resource:entry { stack(); }" > > the output looks like > ... > 0 33759 bus_release_resource:entry > 0xffffffff813db04e > 0xffffffff813db091 > kernel`device_detach+0x84 > kernel`driver_module_handler+0x37c > kernel`module_unload+0x49 > kernel`linker_file_unload+0x178 > kernel`kern_kldunload+0x117 > kernel`syscallenter+0x23d > kernel`syscall+0x4b > kernel`0xffffffff808c5572 > > where the 0xffffffff813dbXXX addresses correspond to my kld. But I was > expecting to see symbolic names instead of addresses. Is there > something else I need to do to add the kld's symbols to the system? > TIA. > There is an omission on our .mk files which prevents CTF info to be generated for kld modules, regardless of WITH_CTF flag. I had discovered this at work just recently and have been using the following patch for the time being: http://people.freebsd.org/~kan/kmod-dtrace.diff If you can confirm it works for you too, I'll get it committed. Thanks, -- Alexander Kabaev
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