31f83163cf
This commit adds new rte_prefetchX_write() variants, that suggest to the compiler to use a prefetch instruction with intention to write. As a compiler builtin, the compiler can choose based on compilation target what the best implementation for this instruction is. Three versions are provided, targeting the different levels of cache. Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com> Reviewed-by: Jerin Jacob <jerinj@marvell.com> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
37 lines
585 B
C
37 lines
585 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <rte_prefetch.h>
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#include "test.h"
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/*
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* Prefetch test
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* =============
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*
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* - Just test that the macro can be called and validate the compilation.
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* The test always return success.
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*/
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static int
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test_prefetch(void)
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{
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int a;
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rte_prefetch0(&a);
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rte_prefetch1(&a);
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rte_prefetch2(&a);
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rte_prefetch0_write(&a);
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rte_prefetch1_write(&a);
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rte_prefetch2_write(&a);
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return 0;
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}
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REGISTER_TEST_COMMAND(prefetch_autotest, test_prefetch);
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