Messages in this thread | | | From | Linus Torvalds <> | Date | Wed, 13 Feb 2013 17:46:52 -0800 | Subject | Re: [tip:core/locking] x86/smp: Move waiting on contended ticket lock out of line |
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On Wed, Feb 13, 2013 at 5:21 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > > Now, on other machines you get the call chain even with pebs because > you can get the whole
Oops, that got cut short early, because I started looking up when PEBS and the last-branch-buffer work together, and couldn't find it, and then came back to the email and forgot to finish the sentence.
Anyway: sometimes you get call chains with precise events, sometimes you don't. And it turns out that I can't find out which cores do both, and which ones don't.
Linus
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