'struct bus_type' is not modified in this driver.
Constifying this structure moves some data to a read-only section, so
increase overall security, especially when the structure holds some
function pointers.
On a x86_64, with allmodconfig:
Before:
======
text data bss dec hex filename
273314 16956 716 290986 470aa kernel/events/core.o
After:
=====
text data bss dec hex filename
273474 16764 716 290954 4708a kernel/events/core.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
Compile tested-only.
---
kernel/events/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index af2e3a06b239..ee011a967a33 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -11508,7 +11508,7 @@ static const struct attribute_group *pmu_dev_groups[] = {
};
static int pmu_bus_running;
-static struct bus_type pmu_bus = {
+static const struct bus_type pmu_bus = {
.name = "event_source",
.dev_groups = pmu_dev_groups,
};
--
2.45.2
