[PATCH v1 1/4] lib/vsprintf: Declare no_hash_pointers in a local header

From: Andy Shevchenko
Date: Fri Aug 04 2023 - 04:26:51 EST


Sparse is not happy to see non-static variable without declaration:
lib/vsprintf.c:61:6: warning: symbol 'no_hash_pointers' was not declared. Should it be static?

Declare respective variable in the local header.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
lib/test_printf.c | 4 ++--
lib/vsprintf.c | 1 +
lib/vsprintf.h | 7 +++++++
mm/kfence/report.c | 3 +--
4 files changed, 11 insertions(+), 4 deletions(-)
create mode 100644 lib/vsprintf.h

diff --git a/lib/test_printf.c b/lib/test_printf.c
index 7677ebccf3c3..9e04b5f7244a 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -24,6 +24,8 @@

#include <linux/property.h>

+#include "vsprintf.h"
+
#include "../tools/testing/selftests/kselftest_module.h"

#define BUF_SIZE 256
@@ -41,8 +43,6 @@ KSTM_MODULE_GLOBALS();
static char *test_buffer __initdata;
static char *alloced_buffer __initdata;

-extern bool no_hash_pointers;
-
static int __printf(4, 0) __init
do_test(int bufsize, const char *expect, int elen,
const char *fmt, va_list ap)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 40f560959b16..6774cf84e623 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -54,6 +54,7 @@

#include <linux/string_helpers.h>
#include "kstrtox.h"
+#include "vsprintf.h"

/* Disable pointer hashing if requested */
bool no_hash_pointers __ro_after_init;
diff --git a/lib/vsprintf.h b/lib/vsprintf.h
new file mode 100644
index 000000000000..ddffde905824
--- /dev/null
+++ b/lib/vsprintf.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LIB_VSPRINTF_H
+#define _LIB_VSPRINTF_H
+
+extern bool no_hash_pointers;
+
+#endif
diff --git a/mm/kfence/report.c b/mm/kfence/report.c
index 197430a5be4a..fb28c6abd58e 100644
--- a/mm/kfence/report.c
+++ b/mm/kfence/report.c
@@ -19,6 +19,7 @@

#include <asm/kfence.h>

+#include "../../lib/vsprintf.h"
#include "kfence.h"

/* May be overridden by <asm/kfence.h>. */
@@ -26,8 +27,6 @@
#define ARCH_FUNC_PREFIX ""
#endif

-extern bool no_hash_pointers;
-
/* Helper function to either print to a seq_file or to console. */
__printf(2, 3)
static void seq_con_printf(struct seq_file *seq, const char *fmt, ...)
--
2.40.0.1.gaa8946217a0b