Date: Mon, 03 Aug 2015 00:31:48 +0200 (CEST) From: Andreas Schwarz <freebsd.asc@strcmp.org> To: freebsd-arm@FreeBSD.org Subject: Re: DWC OTG TX path optimisation for 11-current Message-ID: <46b2774496a.7c2d3e1a@mail.schwarzes.net> In-Reply-To: <46ae842c213.4a570874@mail.schwarzes.net> References: <55A7D8CE.4020809@selasky.org> <CAHNYxxMp9jGDbV-5=-cE6daR-O3eN5pdvO1s-=QfX=A9XYqYmA@mail.gmail.com> <55B23276.8090703@selasky.org> <CAHNYxxNc9uB62hHEv1PM9PcsGgUs=zsvNgatqLD0p%2BiiDA3Aiw@mail.gmail.com> <55B73113.2020308@selasky.org> <CAFHCsPVaPZpqXLS7OApa=Xz5VLnLjVpV5dYV8Pn2uHh1Lcz7Tg@mail.gmail.com> <55B8AB76.7030603@selasky.org> <CAFHCsPUMaYEwJsaGUFuw9yZi_5bmraSBsOYpRWvSeuebpXBJUA@mail.gmail.com> <55B8B297.1010008@selasky.org> <CAFHCsPVGLs8j6LAV%2Bg4rP_ueTOd8pUOupYFGvmgC3XGcJC720Q@mail.gmail.com> <20150729154516.GH78154@funkthat.com> <55B8F5EC.2050908@selasky.org> <CAFHCsPXmQCKt-5xWa6XwECqFO5oz4mT9m1mPu0dKmmQ%2BG9yUAA@mail.gmail.com> <46ae842c213.4a570874@mail.schwarzes.net>
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On 31.07.15, Andreas Schwarz wrote: > On 30.07.15, Svatopluk Kraus wrote: >> Yes, it did. I can't say from which revision it's happening. I try to >> keep kernel updated with each change related to this problem, as I >> hope that it helps. But the problem is still present. >> >> However, the kernels were built without INVARIANTS. Yesterday, I >> prepared some debug patch which needed INVARIANTS anf KTR options and >> the problem did not happen. The buildworld finished in about 15 hours >> (taken from uptime) so it was about 2 hours faster then with kernel >> before r285935. > > This could be important, my kernel config is also without INVARIANTS. During the weekend I made some tests, the problem is also reproducable with the standard RPI2 kernel config. Maybe not so often (but this is just a feeling). -asc
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