From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/tools/testing/selftests/bpf/bpf_util.h | 46 ++++++++++++++--------------------------------
1 files changed, 14 insertions(+), 32 deletions(-)
diff --git a/kernel/tools/testing/selftests/bpf/bpf_util.h b/kernel/tools/testing/selftests/bpf/bpf_util.h
index 84fd6f1..a3352a6 100644
--- a/kernel/tools/testing/selftests/bpf/bpf_util.h
+++ b/kernel/tools/testing/selftests/bpf/bpf_util.h
@@ -6,44 +6,17 @@
#include <stdlib.h>
#include <string.h>
#include <errno.h>
+#include <bpf/libbpf.h> /* libbpf_num_possible_cpus */
static inline unsigned int bpf_num_possible_cpus(void)
{
- static const char *fcpu = "/sys/devices/system/cpu/possible";
- unsigned int start, end, possible_cpus = 0;
- char buff[128];
- FILE *fp;
- int len, n, i, j = 0;
+ int possible_cpus = libbpf_num_possible_cpus();
- fp = fopen(fcpu, "r");
- if (!fp) {
- printf("Failed to open %s: '%s'!\n", fcpu, strerror(errno));
+ if (possible_cpus < 0) {
+ printf("Failed to get # of possible cpus: '%s'!\n",
+ strerror(-possible_cpus));
exit(1);
}
-
- if (!fgets(buff, sizeof(buff), fp)) {
- printf("Failed to read %s!\n", fcpu);
- exit(1);
- }
-
- len = strlen(buff);
- for (i = 0; i <= len; i++) {
- if (buff[i] == ',' || buff[i] == '\0') {
- buff[i] = '\0';
- n = sscanf(&buff[j], "%u-%u", &start, &end);
- if (n <= 0) {
- printf("Failed to retrieve # possible CPUs!\n");
- exit(1);
- } else if (n == 1) {
- end = start;
- }
- possible_cpus += end - start + 1;
- j = i + 1;
- }
- }
-
- fclose(fp);
-
return possible_cpus;
}
@@ -58,4 +31,13 @@
# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif
+#ifndef sizeof_field
+#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
+#endif
+
+#ifndef offsetofend
+#define offsetofend(TYPE, MEMBER) \
+ (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
+#endif
+
#endif /* __BPF_UTIL__ */
--
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