Date: Thu, 28 Jun 2012 07:28:39 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r237693 - head/sys/dev/sio Message-ID: <201206280728.q5S7SdG6059678@svn.freebsd.org>
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Author: imp Date: Thu Jun 28 07:28:39 2012 New Revision: 237693 URL: http://svn.freebsd.org/changeset/base/237693 Log: Document some MP assumptions for sio. Submitted by: bde (years ago) Modified: head/sys/dev/sio/sio.c Modified: head/sys/dev/sio/sio.c ============================================================================== --- head/sys/dev/sio/sio.c Thu Jun 28 07:26:44 2012 (r237692) +++ head/sys/dev/sio/sio.c Thu Jun 28 07:28:39 2012 (r237693) @@ -278,6 +278,11 @@ static int sio_inited; /* table and macro for fast conversion from a unit number to its com struct */ devclass_t sio_devclass; +/* + * XXX Assmues that devclass_get_device, devclass_get_softc and + * device_get_softc are fast interrupt safe. The current implementation + * of these functions are. + */ #define com_addr(unit) ((struct com_s *) \ devclass_get_softc(sio_devclass, unit)) /* XXX */
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