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- // SPDX-License-Identifier: GPL-2.0
- #include "cacheline.h"
- #include <unistd.h>
- #ifdef _SC_LEVEL1_DCACHE_LINESIZE
- #define cache_line_size(cacheline_sizep) *cacheline_sizep = sysconf(_SC_LEVEL1_DCACHE_LINESIZE)
- #else
- #include <api/fs/fs.h>
- #include "debug.h"
- static void cache_line_size(int *cacheline_sizep)
- {
- if (sysfs__read_int("devices/system/cpu/cpu0/cache/index0/coherency_line_size", cacheline_sizep))
- pr_debug("cannot determine cache line size");
- }
- #endif
- int cacheline_size(void)
- {
- static int size;
- if (!size)
- cache_line_size(&size);
- return size;
- }
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