Differential D2643

Add KTR tracing for some MI ptrace events.
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Authored by jhb on May 25 2015, 12:13 PM.

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Reviewers

kib

Commits

rS283546: Add KTR tracing for some MI ptrace events.

Summary

Add KTR tracing for some MI ptrace events.

Test Plan

I'm using this while debugging ptrace() bugs.

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Repository

rS FreeBSD src repository - subversion

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jhb updated this revision to Diff 5675.May 25 2015, 12:13 PM

jhb retitled this revision from to Add KTR tracing for some MI ptrace events..

jhb updated this object.

jhb edited the test plan for this revision. (Show Details)

jhb added a reviewer: kib.

Herald added a subscriber: imp. · View Herald TranscriptMay 25 2015, 12:13 PM

Should MD ptrace actions be traced as well ? I mean the ops handled in arch/arch/ptrace_machdep.c.

sys/kern/kern_exit.c
1224 ↗	(On Diff #5675)	Please, provide the stock p->p_xstat value there.
sys/kern/sys_process.c
884 ↗	(On Diff #5675)	Wouldn't previous follow-fork mode value also be useful there ?

In D2643#49325, @kib wrote:

Should MD ptrace actions be traced as well ? I mean the ops handled in arch/arch/ptrace_machdep.c.

I think so, though I would maybe add those later. I will probably add x86 in a follow up at least. For now my focus is on wait()'ing for child exit status (and the follow fork stuff) which is all MI.