Messages in this thread |  | | | Date | Tue, 3 Feb 2009 07:29:39 +1300 | | Subject | Re: [Bugme-new] [Bug 12562] New: High overhead while switching or synchronizing threads on different cores | | From | Michael Kerrisk <> |
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Hi Peter,
On Tue, Feb 3, 2009 at 1:15 AM, Peter Zijlstra <peterz@infradead.org> wrote: > On Mon, 2009-02-02 at 09:55 +0100, Peter Zijlstra wrote: > >> Ah, that was a good clue, apparently all you need to so it use >> random_r() and provide your own state and all should be well. > > Michael, would it make sense to add the random_r() family to the "SEE > ALSO" section of the random() man page? > > (Admittedly, my random() manpage is ancient: 2008-03-07, so it might be > this is already the case, in which case, ignore me :)
(Up-to-date version of the pages can always be found online at the location in the .sig.)
Well, the man page already had this text under notes:
This function should not be used in cases where multiple threads use random() and the behavior should be reproducible. Use random_r(3) for that purpose.
But it certainly doesn't hurt to have random_r(3) also listed under the SEE ALSO, and I've added it for man-pages-3.18.
Cheers,
Michael
-- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ git://git.kernel.org/pub/scm/docs/man-pages/man-pages.git man-pages online: http://www.kernel.org/doc/man-pages/online_pages.html Found a bug? http://www.kernel.org/doc/man-pages/reporting_bugs.html
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