diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index c3f075e8f60c..09b2d2099107 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -74,9 +74,12 @@ int kallsyms_on_each_symbol(int (*fn)(void *, const char *, unsigned long),
 			    void *data);
 int kallsyms_on_each_match_symbol(int (*fn)(void *, unsigned long),
 				  const char *name, void *data);
+int kallsyms_on_each_match_symbol_or_prefix(int (*fn)(void *, unsigned long),
+					    const char *name, void *data);
 
 /* Lookup the address for a symbol. Returns 0 if not found. */
 unsigned long kallsyms_lookup_name(const char *name);
+unsigned long kallsyms_lookup_name_or_prefix(const char *name);
 
 extern int kallsyms_lookup_size_offset(unsigned long addr,
 				  unsigned long *symbolsize,
@@ -104,6 +107,11 @@ static inline unsigned long kallsyms_lookup_name(const char *name)
 	return 0;
 }
 
+static inline unsigned long kallsyms_lookup_name_or_prefix(const char *name)
+{
+	return 0;
+}
+
 static inline int kallsyms_lookup_size_offset(unsigned long addr,
 					      unsigned long *symbolsize,
 					      unsigned long *offset)
@@ -165,6 +173,12 @@ static inline int kallsyms_on_each_match_symbol(int (*fn)(void *, unsigned long)
 {
 	return -EOPNOTSUPP;
 }
+
+static inline int kallsyms_on_each_match_symbol_or_prefix(int (*fn)(void *, unsigned long),
+							  const char *name, void *data)
+{
+	return -EOPNOTSUPP;
+}
 #endif /*CONFIG_KALLSYMS*/
 
 static inline void print_ip_sym(const char *loglvl, unsigned long ip)
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index fb2c77368d18..4285dd85d814 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -164,9 +164,6 @@ static void cleanup_symbol_name(char *s)
 {
 	char *res;
 
-	if (!IS_ENABLED(CONFIG_LTO_CLANG))
-		return;
-
 	/*
 	 * LLVM appends various suffixes for local functions and variables that
 	 * must be promoted to global scope as part of LTO.  This can break
@@ -181,13 +178,13 @@ static void cleanup_symbol_name(char *s)
 	return;
 }
 
-static int compare_symbol_name(const char *name, char *namebuf)
+static int compare_symbol_name(const char *name, char *namebuf, bool exact_match)
 {
-	/* The kallsyms_seqs_of_names is sorted based on names after
-	 * cleanup_symbol_name() (see scripts/kallsyms.c) if clang lto is enabled.
-	 * To ensure correct bisection in kallsyms_lookup_names(), do
-	 * cleanup_symbol_name(namebuf) before comparing name and namebuf.
-	 */
+	int ret = strcmp(name, namebuf);
+
+	if (exact_match || !ret)
+		return ret;
+
 	cleanup_symbol_name(namebuf);
 	return strcmp(name, namebuf);
 }
@@ -204,13 +201,17 @@ static unsigned int get_symbol_seq(int index)
 
 static int kallsyms_lookup_names(const char *name,
 				 unsigned int *start,
-				 unsigned int *end)
+				 unsigned int *end,
+				 bool exact_match)
 {
 	int ret;
 	int low, mid, high;
 	unsigned int seq, off;
 	char namebuf[KSYM_NAME_LEN];
 
+	if (!IS_ENABLED(CONFIG_LTO_CLANG))
+		exact_match = true;
+
 	low = 0;
 	high = kallsyms_num_syms - 1;
 
@@ -219,7 +220,7 @@ static int kallsyms_lookup_names(const char *name,
 		seq = get_symbol_seq(mid);
 		off = get_symbol_offset(seq);
 		kallsyms_expand_symbol(off, namebuf, ARRAY_SIZE(namebuf));
-		ret = compare_symbol_name(name, namebuf);
+		ret = compare_symbol_name(name, namebuf, exact_match);
 		if (ret > 0)
 			low = mid + 1;
 		else if (ret < 0)
@@ -236,7 +237,7 @@ static int kallsyms_lookup_names(const char *name,
 		seq = get_symbol_seq(low - 1);
 		off = get_symbol_offset(seq);
 		kallsyms_expand_symbol(off, namebuf, ARRAY_SIZE(namebuf));
-		if (compare_symbol_name(name, namebuf))
+		if (compare_symbol_name(name, namebuf, exact_match))
 			break;
 		low--;
 	}
@@ -248,7 +249,7 @@ static int kallsyms_lookup_names(const char *name,
 			seq = get_symbol_seq(high + 1);
 			off = get_symbol_offset(seq);
 			kallsyms_expand_symbol(off, namebuf, ARRAY_SIZE(namebuf));
-			if (compare_symbol_name(name, namebuf))
+			if (compare_symbol_name(name, namebuf, exact_match))
 				break;
 			high++;
 		}
@@ -268,13 +269,35 @@ unsigned long kallsyms_lookup_name(const char *name)
 	if (!*name)
 		return 0;
 
-	ret = kallsyms_lookup_names(name, &i, NULL);
+	ret = kallsyms_lookup_names(name, &i, NULL, true);
 	if (!ret)
 		return kallsyms_sym_address(get_symbol_seq(i));
 
 	return module_kallsyms_lookup_name(name);
 }
 
+/*
+ * Lookup the address for this symbol.
+ *
+ * With CONFIG_LTO_CLANG=y, if there is no exact match, also try lookup
+ * symbol.llvm.<hash>.
+ */
+unsigned long kallsyms_lookup_name_or_prefix(const char *name)
+{
+	unsigned long addr;
+
+	addr = kallsyms_lookup_name(name);
+
+	if (!addr && IS_ENABLED(CONFIG_LTO_CLANG)) {
+		int ret, i;
+
+		ret = kallsyms_lookup_names(name, &i, NULL, false);
+		if (!ret)
+			addr = kallsyms_sym_address(get_symbol_seq(i));
+	}
+	return addr;
+}
+
 /*
  * Iterate over all symbols in vmlinux.  For symbols from modules use
  * module_kallsyms_on_each_symbol instead.
@@ -303,7 +326,25 @@ int kallsyms_on_each_match_symbol(int (*fn)(void *, unsigned long),
 	int ret;
 	unsigned int i, start, end;
 
-	ret = kallsyms_lookup_names(name, &start, &end);
+	ret = kallsyms_lookup_names(name, &start, &end, true);
+	if (ret)
+		return 0;
+
+	for (i = start; !ret && i <= end; i++) {
+		ret = fn(data, kallsyms_sym_address(get_symbol_seq(i)));
+		cond_resched();
+	}
+
+	return ret;
+}
+
+int kallsyms_on_each_match_symbol_or_prefix(int (*fn)(void *, unsigned long),
+					    const char *name, void *data)
+{
+	int ret;
+	unsigned int i, start, end;
+
+	ret = kallsyms_lookup_names(name, &start, &end, false);
 	if (ret)
 		return 0;
 
@@ -450,8 +491,6 @@ const char *kallsyms_lookup(unsigned long addr,
 
 int lookup_symbol_name(unsigned long addr, char *symname)
 {
-	int res;
-
 	symname[0] = '\0';
 	symname[KSYM_NAME_LEN - 1] = '\0';
 
@@ -462,16 +501,10 @@ int lookup_symbol_name(unsigned long addr, char *symname)
 		/* Grab name */
 		kallsyms_expand_symbol(get_symbol_offset(pos),
 				       symname, KSYM_NAME_LEN);
-		goto found;
+		return 0;
 	}
 	/* See if it's in a module. */
-	res = lookup_module_symbol_name(addr, symname);
-	if (res)
-		return res;
-
-found:
-	cleanup_symbol_name(symname);
-	return 0;
+	return lookup_module_symbol_name(addr, symname);
 }
 
 /* Look up a kernel symbol and return it in a text buffer. */
diff --git a/kernel/kallsyms_selftest.c b/kernel/kallsyms_selftest.c
index 2f84896a7bcb..873f7c445488 100644
--- a/kernel/kallsyms_selftest.c
+++ b/kernel/kallsyms_selftest.c
@@ -187,31 +187,11 @@ static void test_perf_kallsyms_lookup_name(void)
 		stat.min, stat.max, div_u64(stat.sum, stat.real_cnt));
 }
 
-static bool match_cleanup_name(const char *s, const char *name)
-{
-	char *p;
-	int len;
-
-	if (!IS_ENABLED(CONFIG_LTO_CLANG))
-		return false;
-
-	p = strstr(s, ".llvm.");
-	if (!p)
-		return false;
-
-	len = strlen(name);
-	if (p - s != len)
-		return false;
-
-	return !strncmp(s, name, len);
-}
-
 static int find_symbol(void *data, const char *name, unsigned long addr)
 {
 	struct test_stat *stat = (struct test_stat *)data;
 
-	if (strcmp(name, stat->name) == 0 ||
-	    (!stat->perf && match_cleanup_name(name, stat->name))) {
+	if (!strcmp(name, stat->name)) {
 		stat->real_cnt++;
 		stat->addr = addr;
 
