Date: Sun, 7 Jan 2018 18:06:30 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r327678 - head/sys/kern Message-ID: <201801071806.w07I6U84084570@repo.freebsd.org>
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Author: ian Date: Sun Jan 7 18:06:30 2018 New Revision: 327678 URL: https://svnweb.freebsd.org/changeset/base/327678 Log: Use EVENTHANDLER_DIRECT_INVOKE() for device events, for better performance. Modified: head/sys/kern/subr_bus.c Modified: head/sys/kern/subr_bus.c ============================================================================== --- head/sys/kern/subr_bus.c Sun Jan 7 13:41:06 2018 (r327677) +++ head/sys/kern/subr_bus.c Sun Jan 7 18:06:30 2018 (r327678) @@ -34,6 +34,7 @@ __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/conf.h> +#include <sys/eventhandler.h> #include <sys/filio.h> #include <sys/lock.h> #include <sys/kernel.h> @@ -146,6 +147,10 @@ struct device { static MALLOC_DEFINE(M_BUS, "bus", "Bus data structures"); static MALLOC_DEFINE(M_BUS_SC, "bus-sc", "Bus data structures, softc"); +EVENTHANDLER_LIST_DEFINE(device_attach); +EVENTHANDLER_LIST_DEFINE(device_detach); +EVENTHANDLER_LIST_DEFINE(dev_lookup); + static void devctl2_init(void); #define DRIVERNAME(d) ((d)? d->name : "no driver") @@ -2938,7 +2943,7 @@ device_attach(device_t dev) else dev->state = DS_ATTACHED; dev->flags &= ~DF_DONENOMATCH; - EVENTHANDLER_INVOKE(device_attach, dev); + EVENTHANDLER_DIRECT_INVOKE(device_attach, dev); devadded(dev); return (0); } @@ -2972,12 +2977,14 @@ device_detach(device_t dev) if (dev->state != DS_ATTACHED) return (0); - EVENTHANDLER_INVOKE(device_detach, dev, EVHDEV_DETACH_BEGIN); + EVENTHANDLER_DIRECT_INVOKE(device_detach, dev, EVHDEV_DETACH_BEGIN); if ((error = DEVICE_DETACH(dev)) != 0) { - EVENTHANDLER_INVOKE(device_detach, dev, EVHDEV_DETACH_FAILED); + EVENTHANDLER_DIRECT_INVOKE(device_detach, dev, + EVHDEV_DETACH_FAILED); return (error); } else { - EVENTHANDLER_INVOKE(device_detach, dev, EVHDEV_DETACH_COMPLETE); + EVENTHANDLER_DIRECT_INVOKE(device_detach, dev, + EVHDEV_DETACH_COMPLETE); } devremoved(dev); if (!device_is_quiet(dev)) @@ -5330,7 +5337,7 @@ find_device(struct devreq *req, device_t *devp) /* Finally, give device enumerators a chance. */ dev = NULL; - EVENTHANDLER_INVOKE(dev_lookup, req->dr_name, &dev); + EVENTHANDLER_DIRECT_INVOKE(dev_lookup, req->dr_name, &dev); if (dev == NULL) return (ENOENT); *devp = dev;
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