[SCM] strace branch, master, updated. v4.5.20-103-g7b6847b

Tejun Heo tj at kernel.org
Tue Mar 15 10:44:20 UTC 2011


On Tue, Mar 15, 2011 at 01:38:36PM +0300, Dmitry V. Levin wrote:
> I've skimmed through that lengthy lkml thread to get the idea how this
> ptrace interaction with job control is going to be changed.  My main
> user space concern is that if strace will have to *not* resume tracee
> with PTRACE_SYSCALL upon each CLD_STOPPED/CLD_CONTINUED notification
> when running on newer kernels, and will have to continue resuming on
> older kernels, then strace needs a simple and reliable runtime method
> to find out whether that particular kernel needs resuming after
> receiving job control notifications.

Yes, there will be.  At this point, I think it would probably be
better to enable the new job control behavior only if the new attach
request is used along with clone tracing behavior.  So, strace will
see the new behavior only when it explicitly uses the new API.



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