Date: Fri, 18 Jan 2013 10:11:55 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r245596 - projects/counters/sys/i386/include Message-ID: <201301181011.r0IABtWv047475@svn.freebsd.org>
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Author: kib Date: Fri Jan 18 10:11:54 2013 New Revision: 245596 URL: http://svnweb.freebsd.org/changeset/base/245596 Log: Add slow implementation of the dynamic per-cpu counters for i386. It will be used for all other architectures as well for now. Added: projects/counters/sys/i386/include/counter.h (contents, props changed) Added: projects/counters/sys/i386/include/counter.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ projects/counters/sys/i386/include/counter.h Fri Jan 18 10:11:54 2013 (r245596) @@ -0,0 +1,55 @@ +/*- + * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef __MACHINE_COUNTER_H__ +#define __MACHINE_COUNTER_H__ + +#include <sys/pcpu.h> + +static __inline void +counter_u64_inc(counter_u64_t c, uint64_t inc) +{ + + critical_enter(); + *(uint64_t *)((char *)c + sizeof(struct pcpu) * curcpu) += inc; + critical_leave(); +} + +static __inline void +counter_u64_dec(counter_u64_t c, uint64_t dec) +{ + + critical_enter(); + *(uint64_t *)((char *)c + sizeof(struct pcpu) * curcpu) -= inc; + critical_leave(); +} + +#endif /* ! __MACHINE_COUNTER_H__ */
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