// 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;}