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/perf/arch/x86/util/header.c | 69 +++++++++++++++++++++++++++++++++-
1 files changed, 67 insertions(+), 2 deletions(-)
diff --git a/kernel/tools/perf/arch/x86/util/header.c b/kernel/tools/perf/arch/x86/util/header.c
index 2a5daec..578c8c5 100644
--- a/kernel/tools/perf/arch/x86/util/header.c
+++ b/kernel/tools/perf/arch/x86/util/header.c
@@ -5,8 +5,10 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <regex.h>
-#include "../../util/header.h"
+#include "../../../util/debug.h"
+#include "../../../util/header.h"
static inline void
cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,
@@ -71,9 +73,72 @@
{
char *buf = malloc(128);
- if (buf && __get_cpuid(buf, 128, "%s-%u-%X$") < 0) {
+ if (buf && __get_cpuid(buf, 128, "%s-%u-%X-%X$") < 0) {
free(buf);
return NULL;
}
return buf;
}
+
+/* Full CPUID format for x86 is vendor-family-model-stepping */
+static bool is_full_cpuid(const char *id)
+{
+ const char *tmp = id;
+ int count = 0;
+
+ while ((tmp = strchr(tmp, '-')) != NULL) {
+ count++;
+ tmp++;
+ }
+
+ if (count == 3)
+ return true;
+
+ return false;
+}
+
+int strcmp_cpuid_str(const char *mapcpuid, const char *id)
+{
+ regex_t re;
+ regmatch_t pmatch[1];
+ int match;
+ bool full_mapcpuid = is_full_cpuid(mapcpuid);
+ bool full_cpuid = is_full_cpuid(id);
+
+ /*
+ * Full CPUID format is required to identify a platform.
+ * Error out if the cpuid string is incomplete.
+ */
+ if (full_mapcpuid && !full_cpuid) {
+ pr_info("Invalid CPUID %s. Full CPUID is required, "
+ "vendor-family-model-stepping\n", id);
+ return 1;
+ }
+
+ if (regcomp(&re, mapcpuid, REG_EXTENDED) != 0) {
+ /* Warn unable to generate match particular string. */
+ pr_info("Invalid regular expression %s\n", mapcpuid);
+ return 1;
+ }
+
+ match = !regexec(&re, id, 1, pmatch, 0);
+ regfree(&re);
+ if (match) {
+ size_t match_len = (pmatch[0].rm_eo - pmatch[0].rm_so);
+ size_t cpuid_len;
+
+ /* If the full CPUID format isn't required,
+ * ignoring the stepping.
+ */
+ if (!full_mapcpuid && full_cpuid)
+ cpuid_len = strrchr(id, '-') - id;
+ else
+ cpuid_len = strlen(id);
+
+ /* Verify the entire string matched. */
+ if (match_len == cpuid_len)
+ return 0;
+ }
+
+ return 1;
+}
--
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