Date: Wed, 22 Sep 2010 05:32:37 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r212992 - head/sys/kern Message-ID: <201009220532.o8M5WbGb017692@svn.freebsd.org>
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Author: mav Date: Wed Sep 22 05:32:37 2010 New Revision: 212992 URL: http://svn.freebsd.org/changeset/base/212992 Log: If kernel built with DEVICE_POLLING, keep one CPU always in active state to handle it. Modified: head/sys/kern/kern_clocksource.c Modified: head/sys/kern/kern_clocksource.c ============================================================================== --- head/sys/kern/kern_clocksource.c Wed Sep 22 05:17:18 2010 (r212991) +++ head/sys/kern/kern_clocksource.c Wed Sep 22 05:32:37 2010 (r212992) @@ -34,6 +34,7 @@ __FBSDID("$FreeBSD$"); /* XEN has own timer routines now. */ #ifndef XEN +#include "opt_device_polling.h" #include "opt_kdtrace.h" #include <sys/param.h> @@ -721,7 +722,11 @@ cpu_idleclock(void) struct pcpu_state *state; if (idletick || busy || - (periodic && (timer->et_flags & ET_FLAGS_PERCPU))) + (periodic && (timer->et_flags & ET_FLAGS_PERCPU)) +#ifdef DEVICE_POLLING + || curcpu == CPU_FIRST() +#endif + ) return; state = DPCPU_PTR(timerstate); if (periodic)
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