rtl88x2CE_WiFi_linux driver

hc

2024-05-10 cde9070d9970eef1f7ec2360586c802a16230ad8

 kernel/samples/bpf/tracex3_user.c
..
..
@@ -1,8 +1,5 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
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2
 /* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of version 2 of the GNU General Public
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- * License as published by the Free Software Foundation.
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3
  */
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4
 #include <stdio.h>
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5
 #include <stdlib.h>
..
..
@@ -10,14 +7,11 @@
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7
 #include <unistd.h>
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8
 #include <stdbool.h>
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9
 #include <string.h>
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-#include <linux/bpf.h>
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10
 #include <sys/resource.h>
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11
 
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12
 #include <bpf/bpf.h>
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-#include "bpf_load.h"
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+#include <bpf/libbpf.h>
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14
 #include "bpf_util.h"
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-
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-#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
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15
 
22
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 #define SLOTS 100
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17
 
..
..
@@ -113,21 +107,12 @@
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107
 
114
108
 int main(int ac, char **argv)
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109
 {
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-	struct rlimit r = {1024*1024, RLIM_INFINITY};
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+	struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
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+	struct bpf_link *links[2];
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+	struct bpf_program *prog;
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+	struct bpf_object *obj;
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114
 	char filename[256];
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-	int i;
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-
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-	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
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-
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-	if (setrlimit(RLIMIT_MEMLOCK, &r)) {
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-		perror("setrlimit(RLIMIT_MEMLOCK)");
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-		return 1;
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-	}
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-
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-	if (load_bpf_file(filename)) {
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-		printf("%s", bpf_log_buf);
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-		return 1;
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-	}
115
+	int map_fd, i, j = 0;
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116
 
132
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 	for (i = 1; i < ac; i++) {
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118
 		if (strcmp(argv[i], "-a") == 0) {
..
..
@@ -140,6 +125,40 @@
140
125
 			       "  -t text only\n");
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126
 			return 1;
142
127
 		}
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+	}
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+
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+	if (setrlimit(RLIMIT_MEMLOCK, &r)) {
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+		perror("setrlimit(RLIMIT_MEMLOCK)");
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+		return 1;
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+	}
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+
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+	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
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+	obj = bpf_object__open_file(filename, NULL);
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+	if (libbpf_get_error(obj)) {
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+		fprintf(stderr, "ERROR: opening BPF object file failed\n");
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+		return 0;
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+	}
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+
142
+	/* load BPF program */
143
+	if (bpf_object__load(obj)) {
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+		fprintf(stderr, "ERROR: loading BPF object file failed\n");
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+		goto cleanup;
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+	}
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+
148
+	map_fd = bpf_object__find_map_fd_by_name(obj, "lat_map");
149
+	if (map_fd < 0) {
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+		fprintf(stderr, "ERROR: finding a map in obj file failed\n");
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+		goto cleanup;
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+	}
153
+
154
+	bpf_object__for_each_program(prog, obj) {
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+		links[j] = bpf_program__attach(prog);
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+		if (libbpf_get_error(links[j])) {
157
+			fprintf(stderr, "ERROR: bpf_program__attach failed\n");
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+			links[j] = NULL;
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+			goto cleanup;
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+		}
161
+		j++;
143
162
 	}
144
163
 
145
164
 	printf("  heatmap of IO latency\n");
..
..
@@ -158,9 +177,14 @@
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177
 	for (i = 0; ; i++) {
159
178
 		if (i % 20 == 0)
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179
 			print_banner();
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-		print_hist(map_fd[1]);
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+		print_hist(map_fd);
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181
 		sleep(2);
163
182
 	}
164
183
 
184
+cleanup:
185
+	for (j--; j >= 0; j--)
186
+		bpf_link__destroy(links[j]);
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+
188
+	bpf_object__close(obj);
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189
 	return 0;
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190
 }