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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;
| }
|
|
