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9616275021
Too many times, people's performance problems have amounted to "somehow your SIMD support isn't working", and determining that at runtime is difficult to describe to people. This adds a /proc/spl/kstat/zfs/simd node, which exposes metadata about which instructions ZFS thinks it can use, on AArch64 and x86_64 Linux, to make investigating things like this much easier. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rich Ercolani <rincebrain@gmail.com> Closes #16530
53 lines
1.4 KiB
C
53 lines
1.4 KiB
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 (the "License").
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* You may not use this file except in compliance 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 https://opensource.org/licenses/CDDL-1.0.
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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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/*
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* Copyright (C) 2019 Lawrence Livermore National Security, LLC.
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*/
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#ifndef _LINUX_SIMD_H
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#define _LINUX_SIMD_H
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#if defined(__x86)
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#include <linux/simd_x86.h>
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#elif defined(__arm__)
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#include <linux/simd_arm.h>
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#elif defined(__aarch64__)
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#include <linux/simd_aarch64.h>
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#elif defined(__powerpc__)
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#include <linux/simd_powerpc.h>
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#else
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#define kfpu_allowed() 0
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#define kfpu_begin() do {} while (0)
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#define kfpu_end() do {} while (0)
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#define kfpu_init() 0
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#define kfpu_fini() ((void) 0)
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#endif
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void simd_stat_init(void);
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void simd_stat_fini(void);
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#endif /* _LINUX_SIMD_H */
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