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9829574834
* Convert ABD to use the Linux Kernel scatterlist implementation instead of the hand rolled one from illumos. * Scatter ABDs are preferentially populated with higher order compound pages from a single zone. Allocation size is progressively decreased until it can be satisfied without performing reclaim or compaction. * An alternate page allocator is provided for kernels older than 3.6 and for CONFIG_HIGHMEM systems. This allocator is designed as a fallback for maximum compatibility. * Extended abdstats to provide visibility in the the allocator. * Add cached value for PAGESIZE in userspace. Contributions-by: Chunwei Chen <david.chen@osnexus.com> Gvozden Neskovic <neskovic@gmail.com> Jinshan Xiong <jinshan.xiong@intel.com> Isaac Huang <he.huang@intel.com> David Quigley <david.quigley@intel.com> Brian Behlendorf <behlendorf1@llnl.gov>
35 lines
993 B
C
35 lines
993 B
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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#include <unistd.h>
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size_t pagesize = 0;
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size_t
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spl_pagesize(void)
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{
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if (pagesize == 0)
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pagesize = sysconf(_SC_PAGESIZE);
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return (pagesize);
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}
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