On 2020/5/29 18:26, Greg KH wrote:
On Fri, May 29, 2020 at 07:41:06AM +0000, Luis Chamberlain wrote:
From: Xiaoming Ni <nixiaoming@xxxxxxxxxx>
Move random_table sysctl from kernel/sysctl.c to drivers/char/random.c
and use register_sysctl_subdir() to help remove the clutter out of
kernel/sysctl.c.
Signed-off-by: Xiaoming Ni <nixiaoming@xxxxxxxxxx>
Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
drivers/char/random.c | 14 ++++++++++++--
include/linux/sysctl.h | 1 -
kernel/sysctl.c | 5 -----
3 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index a7cf6aa65908..73fd4b6e9c18 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -2101,8 +2101,7 @@ static int proc_do_entropy(struct ctl_table *table, int write,
}
static int sysctl_poolsize = INPUT_POOL_WORDS * 32;
-extern struct ctl_table random_table[];
-struct ctl_table random_table[] = {
+static struct ctl_table random_table[] = {
{
.procname = "poolsize",
.data = &sysctl_poolsize,
@@ -2164,6 +2163,17 @@ struct ctl_table random_table[] = {
#endif
{ }
};
+
+/*
+ * rand_initialize() is called before sysctl_init(),
+ * so we cannot call register_sysctl_init() in rand_initialize()
+ */
+static int __init random_sysctls_init(void)
+{
+ register_sysctl_subdir("kernel", "random", random_table);
No error checking?
:(
It was my mistake, I forgot to add a comment here.
Same as the comment of register_sysctl_init(),
There is almost no failure here during the system initialization phase,
and failure in time does not affect the main function.
Thanks
Xiaoming Ni
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