[PATCH] static_call: make selftest available for out-of-line SC

From: Song Shuai
Date: Wed Jan 10 2024 - 05:51:06 EST


Static call selftest should be built once HAVE_STATIC_CALL is configured.
but it's now bonded with HAVE_STATIC_CALL_INLINE.

Move selftest to static_call.c making it available for out-of-line SC.

Signed-off-by: Song Shuai <songshuaishuai@xxxxxxxxxxx>
---
kernel/static_call.c | 44 +++++++++++++++++++++++++++++++++++++
kernel/static_call_inline.c | 42 -----------------------------------
2 files changed, 44 insertions(+), 42 deletions(-)

diff --git a/kernel/static_call.c b/kernel/static_call.c
index e9c3e69f3837..b1e1b4573201 100644
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -1,8 +1,52 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/static_call.h>
+#include <linux/init.h>

long __static_call_return0(void)
{
return 0;
}
EXPORT_SYMBOL_GPL(__static_call_return0);
+
+#ifdef CONFIG_STATIC_CALL_SELFTEST
+
+static int func_a(int x)
+{
+ return x+1;
+}
+
+static int func_b(int x)
+{
+ return x+2;
+}
+
+DEFINE_STATIC_CALL(sc_selftest, func_a);
+
+static struct static_call_data {
+ int (*func)(int);
+ int val;
+ int expect;
+} static_call_data [] __initdata = {
+ { NULL, 2, 3 },
+ { func_b, 2, 4 },
+ { func_a, 2, 3 }
+};
+
+static int __init test_static_call_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(static_call_data); i++ ) {
+ struct static_call_data *scd = &static_call_data[i];
+
+ if (scd->func)
+ static_call_update(sc_selftest, scd->func);
+
+ WARN_ON(static_call(sc_selftest)(scd->val) != scd->expect);
+ }
+
+ return 0;
+}
+early_initcall(test_static_call_init);
+
+#endif /* CONFIG_STATIC_CALL_SELFTEST */
diff --git a/kernel/static_call_inline.c b/kernel/static_call_inline.c
index 639397b5491c..3e65bfafe559 100644
--- a/kernel/static_call_inline.c
+++ b/kernel/static_call_inline.c
@@ -512,45 +512,3 @@ int __init static_call_init(void)
}
early_initcall(static_call_init);

-#ifdef CONFIG_STATIC_CALL_SELFTEST
-
-static int func_a(int x)
-{
- return x+1;
-}
-
-static int func_b(int x)
-{
- return x+2;
-}
-
-DEFINE_STATIC_CALL(sc_selftest, func_a);
-
-static struct static_call_data {
- int (*func)(int);
- int val;
- int expect;
-} static_call_data [] __initdata = {
- { NULL, 2, 3 },
- { func_b, 2, 4 },
- { func_a, 2, 3 }
-};
-
-static int __init test_static_call_init(void)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(static_call_data); i++ ) {
- struct static_call_data *scd = &static_call_data[i];
-
- if (scd->func)
- static_call_update(sc_selftest, scd->func);
-
- WARN_ON(static_call(sc_selftest)(scd->val) != scd->expect);
- }
-
- return 0;
-}
-early_initcall(test_static_call_init);
-
-#endif /* CONFIG_STATIC_CALL_SELFTEST */
--
2.39.2