Date: Mon, 18 May 2009 14:02:55 +0000 (UTC) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r192305 - head/sys/kern Message-ID: <200905181402.n4IE2tO9063895@svn.freebsd.org>
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Author: rwatson Date: Mon May 18 14:02:55 2009 New Revision: 192305 URL: http://svn.freebsd.org/changeset/base/192305 Log: Binding interrupts to a CPU consists of two parts: setting up CPU affinity for the interrupt thread, and requesting that underlying hardware direct interrupts to the CPU. For software interrupt threads, implement a no-op interrupt event binder that returns success, so that the interrupt management code will just set the ithread's affinity and succeed. Reviewed by: jhb MFC after: 1 week Modified: head/sys/kern/kern_intr.c Modified: head/sys/kern/kern_intr.c ============================================================================== --- head/sys/kern/kern_intr.c Mon May 18 12:03:43 2009 (r192304) +++ head/sys/kern/kern_intr.c Mon May 18 14:02:55 2009 (r192305) @@ -968,6 +968,18 @@ intr_event_schedule_thread(struct intr_e #endif /* + * Allow interrupt event binding for software interrupt handlers -- a no-op, + * since interrupts are generated in software rather than being directed by + * a PIC. + */ +static int +swi_assign_cpu(void *arg, u_char cpu) +{ + + return (0); +} + +/* * Add a software interrupt handler to a specified event. If a given event * is not specified, then a new event is created. */ @@ -988,7 +1000,7 @@ swi_add(struct intr_event **eventp, cons return (EINVAL); } else { error = intr_event_create(&ie, NULL, IE_SOFT, 0, - NULL, NULL, NULL, NULL, "swi%d:", pri); + NULL, NULL, NULL, swi_assign_cpu, "swi%d:", pri); if (error) return (error); if (eventp != NULL)
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