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2b128c570b
Rework: * Split clflushopt into a separate file as recommended by Ken. If we enable -mclflush on all driver source compilation, then gcc may insert uses of it on processors that don't support it. * Add uintptr_t casting to cpu_caps->cacheline usage Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22379>
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/*
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* Copyright (c) 2023 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "intel_mem.h"
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#include "util/u_cpu_detect.h"
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#ifndef HAVE___BUILTIN_IA32_CLFLUSHOPT
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#error "Compiler doesn't support clflushopt!"
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#endif
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void intel_clflushopt_range(void *start, size_t size);
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void
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intel_clflushopt_range(void *start, size_t size)
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{
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const struct util_cpu_caps_t *cpu_caps = util_get_cpu_caps();
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assert(cpu_caps->has_clflushopt);
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assert(cpu_caps->cacheline > 0);
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void *p = (void *) (((uintptr_t) start) &
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~((uintptr_t)cpu_caps->cacheline - 1));
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void *end = start + size;
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while (p < end) {
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__builtin_ia32_clflushopt(p);
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p += cpu_caps->cacheline;
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}
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}
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