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Message-ID: <y0mbq8s0x8e.fsf@ton.toronto.redhat.com> Date: Sat, 15 Dec 2007 10:54:41 -0500 From: fche@...hat.com (Frank Ch. Eigler) To: eranian@....hp.com Cc: linux-kernel@...r.kernel.org, davem@...emloft.net, paulus@...ba.org, akpm@...ux-foundation.org, gregkh@...e.de, mucci@...utk.edu, wcohen@...hat.com, robert.richter@....com, andi@...stfloor.org, eranian@...il.com, roland@...hat.com Subject: Re: [perfmon2] perfmon2 merge news Stephane Eranian <eranian@....hp.com> writes: > [...] >> > [...] AFAIK, there is no single call to stop T1 and wait until it >> > is completely off the CPU, unless we go through the (internal) >> > ptrace interface. >> >> The utrace code supports this style of thread manipulation better >> than ptrace. > > Afre you saying that utrace provides a utrace_thread_stop(tid) call > that returns only when the thread tid is off the CPU. And then there > is a utrace_thread_resume(tid) call. If that's the case then that is > what I need. While I see no single call, it can be synthesized from a sequence of them: utrace_attach, utrace_set_flags (... UTRACE_ACTION_QUESCE ...), then waiting for a callback. Roland, is there a more compact way? > How are we with regards to utrace integration? Roland McGrath is working on breaking the patches down. - FChE -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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