// SPDX-License-Identifier: GPL-2.0-only/* * Copyright (C) 2020 HiSilicon Limited. */ #include <fcntl.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/ioctl.h>#include <sys/mman.h>#include <linux/map_benchmark.h> #define NSEC_PER_MSEC 1000000L static char *directions[] = { "BIDIRECTIONAL", "TO_DEVICE", "FROM_DEVICE",}; static char *mode[] = { "SINGLE_MODE", "SG_MODE",}; int main(int argc, char **argv){ struct map_benchmark map; int fd, opt; /* default single thread, run 20 seconds on NUMA_NO_NODE */ int threads = 1, seconds = 20, node = -1; /* default single map mode */ int map_mode = DMA_MAP_BENCH_SINGLE_MODE; /* default dma mask 32bit, bidirectional DMA */ int bits = 32, xdelay = 0, dir = DMA_MAP_BIDIRECTIONAL; /* default granule 1 PAGESIZE */ int granule = 1; int cmd = DMA_MAP_BENCHMARK; while ((opt = getopt(argc, argv, "t:s:n:b:d:x:g:m:")) != -1) { switch (opt) { case 't': threads = atoi(optarg); break; case 's': seconds = atoi(optarg); break; case 'n': node = atoi(optarg); break; case 'b': bits = atoi(optarg); break; case 'd': dir = atoi(optarg); break; case 'x': xdelay = atoi(optarg); break; case 'g': granule = atoi(optarg); break; case 'm': map_mode = atoi(optarg); break; default: return -1; } } if (map_mode < 0 || map_mode >= DMA_MAP_BENCH_MODE_MAX) { fprintf(stderr, "invalid map mode, SINGLE_MODE:%d, SG_MODE: %d\n", DMA_MAP_BENCH_SINGLE_MODE, DMA_MAP_BENCH_SG_MODE); exit(1); } if (threads <= 0 || threads > DMA_MAP_MAX_THREADS) { fprintf(stderr, "invalid number of threads, must be in 1-%d\n", DMA_MAP_MAX_THREADS); exit(1); } if (seconds <= 0 || seconds > DMA_MAP_MAX_SECONDS) { fprintf(stderr, "invalid number of seconds, must be in 1-%d\n", DMA_MAP_MAX_SECONDS); exit(1); } if (xdelay < 0 || xdelay > DMA_MAP_MAX_TRANS_DELAY) { fprintf(stderr, "invalid transmit delay, must be in 0-%ld\n", DMA_MAP_MAX_TRANS_DELAY); exit(1); } /* suppose the mininum DMA zone is 1MB in the world */ if (bits < 20 || bits > 64) { fprintf(stderr, "invalid dma mask bit, must be in 20-64\n"); exit(1); } if (dir != DMA_MAP_BIDIRECTIONAL && dir != DMA_MAP_TO_DEVICE && dir != DMA_MAP_FROM_DEVICE) { fprintf(stderr, "invalid dma direction\n"); exit(1); } if (granule < 1 || granule > 1024) { fprintf(stderr, "invalid granule size\n"); exit(1); } fd = open("/sys/kernel/debug/dma_map_benchmark", O_RDWR); if (fd == -1) { perror("open"); exit(1); } memset(&map, 0, sizeof(map)); map.seconds = seconds; map.threads = threads; map.node = node; map.dma_bits = bits; map.dma_dir = dir; map.dma_trans_ns = xdelay; map.granule = granule; map.map_mode = map_mode; if (ioctl(fd, cmd, &map)) { perror("ioctl"); exit(1); } printf("dma mapping benchmark(%s): threads:%d seconds:%d node:%d dir:%s granule:%d\n", mode[map_mode], threads, seconds, node, directions[dir], granule); printf("average map latency(us):%.1f standard deviation:%.1f\n", map.avg_map_100ns/10.0, map.map_stddev/10.0); printf("average unmap latency(us):%.1f standard deviation:%.1f\n", map.avg_unmap_100ns/10.0, map.unmap_stddev/10.0); return 0;}
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2020 HiSilicon Limited.
*/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <linux/map_benchmark.h>
#define NSEC_PER_MSEC 1000000L
static char *directions[] = {
"BIDIRECTIONAL",
"TO_DEVICE",
"FROM_DEVICE",
};
static char *mode[] = {
"SINGLE_MODE",
"SG_MODE",
};
int main(int argc, char **argv)
{
struct map_benchmark map;
int fd, opt;
/* default single thread, run 20 seconds on NUMA_NO_NODE */
int threads = 1, seconds = 20, node = -1;
/* default single map mode */
int map_mode = DMA_MAP_BENCH_SINGLE_MODE;
/* default dma mask 32bit, bidirectional DMA */
int bits = 32, xdelay = 0, dir = DMA_MAP_BIDIRECTIONAL;
/* default granule 1 PAGESIZE */
int granule = 1;
int cmd = DMA_MAP_BENCHMARK;
while ((opt = getopt(argc, argv, "t:s:n:b:d:x:g:m:")) != -1) {
switch (opt) {
case 't':
threads = atoi(optarg);
break;
case 's':
seconds = atoi(optarg);
break;
case 'n':
node = atoi(optarg);
break;
case 'b':
bits = atoi(optarg);
break;
case 'd':
dir = atoi(optarg);
break;
case 'x':
xdelay = atoi(optarg);
break;
case 'g':
granule = atoi(optarg);
break;
case 'm':
map_mode = atoi(optarg);
break;
default:
return -1;
}
}
if (map_mode < 0 || map_mode >= DMA_MAP_BENCH_MODE_MAX) {
fprintf(stderr, "invalid map mode, SINGLE_MODE:%d, SG_MODE: %d\n",
DMA_MAP_BENCH_SINGLE_MODE, DMA_MAP_BENCH_SG_MODE);
exit(1);
}
if (threads <= 0 || threads > DMA_MAP_MAX_THREADS) {
fprintf(stderr, "invalid number of threads, must be in 1-%d\n",
DMA_MAP_MAX_THREADS);
exit(1);
}
if (seconds <= 0 || seconds > DMA_MAP_MAX_SECONDS) {
fprintf(stderr, "invalid number of seconds, must be in 1-%d\n",
DMA_MAP_MAX_SECONDS);
exit(1);
}
if (xdelay < 0 || xdelay > DMA_MAP_MAX_TRANS_DELAY) {
fprintf(stderr, "invalid transmit delay, must be in 0-%ld\n",
DMA_MAP_MAX_TRANS_DELAY);
exit(1);
}
/* suppose the mininum DMA zone is 1MB in the world */
if (bits < 20 || bits > 64) {
fprintf(stderr, "invalid dma mask bit, must be in 20-64\n");
exit(1);
}
if (dir != DMA_MAP_BIDIRECTIONAL && dir != DMA_MAP_TO_DEVICE &&
dir != DMA_MAP_FROM_DEVICE) {
fprintf(stderr, "invalid dma direction\n");
exit(1);
}
if (granule < 1 || granule > 1024) {
fprintf(stderr, "invalid granule size\n");
exit(1);
}
fd = open("/sys/kernel/debug/dma_map_benchmark", O_RDWR);
if (fd == -1) {
perror("open");
exit(1);
}
memset(&map, 0, sizeof(map));
map.seconds = seconds;
map.threads = threads;
map.node = node;
map.dma_bits = bits;
map.dma_dir = dir;
map.dma_trans_ns = xdelay;
map.granule = granule;
map.map_mode = map_mode;
if (ioctl(fd, cmd, &map)) {
perror("ioctl");
exit(1);
}
printf("dma mapping benchmark(%s): threads:%d seconds:%d node:%d dir:%s granule:%d\n",
mode[map_mode], threads, seconds, node, directions[dir], granule);
printf("average map latency(us):%.1f standard deviation:%.1f\n",
map.avg_map_100ns/10.0, map.map_stddev/10.0);
printf("average unmap latency(us):%.1f standard deviation:%.1f\n",
map.avg_unmap_100ns/10.0, map.unmap_stddev/10.0);
return 0;
}