1 // SPDX-License-Identifier: GPL-2.0
3  * mem-memcpy.c
11 #include "../perf-sys.h"
12 #include <subcmd/parse-options.h>
17 #include "mem-memcpy-arch.h"
18 #include "mem-memset-arch.h"
73 	cycles_fd = sys_perf_event_open(&cycle_attr, getpid(), -1, -1, perf_event_open_cloexec_flag());  in init_cycles()
77 		return -1;  in init_cycles()
94 static double timeval2double(struct timeval *ts)  in timeval2double()
96 	return (double)ts->tv_sec + (double)ts->tv_usec / (double)USEC_PER_SEC;  in timeval2double()
113 	double (*do_gettimeofday)(const struct function *r, size_t size, void *src, void *dst);
118 static void __bench_mem_function(struct bench_mem_info *info, int r_idx, size_t size, double size_t…  in __bench_mem_function()
120 	const struct function *r = &info->functions[r_idx];  in __bench_mem_function()
121 	double result_bps = 0.0;  in __bench_mem_function()
125 	printf("# function '%s' (%s)\n", r->name, r->desc);  in __bench_mem_function()
130 	if (info->alloc_src) {  in __bench_mem_function()
140 		result_cycles = info->do_cycles(r, size, src, dst);  in __bench_mem_function()
142 		result_bps = info->do_gettimeofday(r, size, src, dst);  in __bench_mem_function()
148 			printf(" %14lf cycles/byte\n", (double)result_cycles/size_total);  in __bench_mem_function()
156 			printf("%lf\n", (double)result_cycles/size_total);  in __bench_mem_function()
172 	printf("# Memory allocation failed - maybe size (%s) is too large?\n", size_str);  in __bench_mem_function()
180 	double size_total;  in bench_mem_common()
182 	argc = parse_options(argc, argv, options, info->usage, 0);  in bench_mem_common()
193 	size_total = (double)size * nr_loops;  in bench_mem_common()
201 		for (i = 0; info->functions[i].name; i++)  in bench_mem_common()
206 	for (i = 0; info->functions[i].name; i++) {  in bench_mem_common()
207 		if (!strcmp(info->functions[i].name, function_str))  in bench_mem_common()
210 	if (!info->functions[i].name) {  in bench_mem_common()
214 		for (i = 0; info->functions[i].name; i++) {  in bench_mem_common()
216 			       info->functions[i].name, info->functions[i].desc);  in bench_mem_common()
232 	 * We prefault the freshly allocated memory range here,  in memcpy_prefault()
241 	memcpy_t fn = r->fn.memcpy;  in do_memcpy_cycles()
251 	return cycle_end - cycle_start;  in do_memcpy_cycles()
254 static double do_memcpy_gettimeofday(const struct function *r, size_t size, void *src, void *dst)  in do_memcpy_gettimeofday()
257 	memcpy_t fn = r->fn.memcpy;  in do_memcpy_gettimeofday()
269 	return (double)(((double)size * nr_loops) / timeval2double(&tv_diff));  in do_memcpy_gettimeofday()
279 # include "mem-memcpy-x86-64-asm-def.h"
307 	memset_t fn = r->fn.memset;  in do_memset_cycles()
311 	 * We prefault the freshly allocated memory range here,  in do_memset_cycles()
314 	fn(dst, -1, size);  in do_memset_cycles()
321 	return cycle_end - cycle_start;  in do_memset_cycles()
324 static double do_memset_gettimeofday(const struct function *r, size_t size, void *src __maybe_unuse…  in do_memset_gettimeofday()
327 	memset_t fn = r->fn.memset;  in do_memset_gettimeofday()
331 	 * We prefault the freshly allocated memory range here,  in do_memset_gettimeofday()
334 	fn(dst, -1, size);  in do_memset_gettimeofday()
343 	return (double)(((double)size * nr_loops) / timeval2double(&tv_diff));  in do_memset_gettimeofday()
358 # include "mem-memset-x86-64-asm-def.h"