Date: Fri, 21 Sep 2018 12:46:28 +0200 From: Sebastian Huber <sebastian.huber@embedded-brains.de> To: FreeBSD <freebsd-hackers@freebsd.org> Subject: Re: epoch(9) background information? Message-ID: <abd1ae3c-658a-d3ce-8b9e-fcdde0a5a2d6@embedded-brains.de> In-Reply-To: <db397431-2c4c-64de-634a-20f38ce6a60e@embedded-brains.de> References: <db397431-2c4c-64de-634a-20f38ce6a60e@embedded-brains.de>
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Hello, I ported the epoch API to RTEMS. You can find the implementation here: https://git.rtems.org/rtems-libbsd/tree/rtemsbsd/include/sys/epoch.h https://git.rtems.org/rtems-libbsd/tree/rtemsbsd/rtems/rtems-kernel-epoch= .c I tested it also on low end uniprocessor targets and it works fine, e.g. * Microchip ATSAM V71 (ARMv7-M) * NXP MCF548x (ColdFire) * NXP MPC860 (PowerPC 32-bit) I tested it also on a 24-core T4240. It scales pretty well. See also: https://git.rtems.org/rtems-libbsd/tree/testsuite/epoch01/test_main.c If someone has ideas for good test cases, then please let me know. I modified the CK a bit to better support RTEMS targets: https://git.rtems.org/rtems-libbsd/commit/?id=3Dbaf1ca76290f43e054e5182c1= 47ca332cb59890f https://git.rtems.org/rtems-libbsd/commit/?id=3D3becda1fef854cbe39e462a17= 74b860e1455c8ef https://git.rtems.org/rtems-libbsd/commit/?id=3D1af372a5eeaba3115f139e4ef= c0204e2cd7208bb https://git.rtems.org/rtems-libbsd/commit/?id=3Dbe6515d2c1086c76ee965c630= 0cc5873c76afab9 --=20 Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.huber@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine gesch=C3=A4ftliche Mitteilung im Sinne des EHUG= .
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