Merge tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-block.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 7747160f6de836df455049774e649f0e63997098..f154019e6b840c41dfe7220a218c7da6f22c6267 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4206,6 +4206,12 @@ static void __init hugetlb_sysfs_init(void)
        hugetlb_register_all_nodes();
 }
 
+#ifdef CONFIG_SYSCTL
+static void hugetlb_sysctl_init(void);
+#else
+static inline void hugetlb_sysctl_init(void) { }
+#endif
+
 static int __init hugetlb_init(void)
 {
        int i;
@@ -4261,6 +4267,7 @@ static int __init hugetlb_init(void)
 
        hugetlb_sysfs_init();
        hugetlb_cgroup_file_init();
+       hugetlb_sysctl_init();
 
 #ifdef CONFIG_SMP
        num_fault_mutexes = roundup_pow_of_two(8 * num_possible_cpus());
@@ -4592,7 +4599,7 @@ out:
        return ret;
 }
 
-int hugetlb_sysctl_handler(struct ctl_table *table, int write,
+static int hugetlb_sysctl_handler(struct ctl_table *table, int write,
                          void *buffer, size_t *length, loff_t *ppos)
 {
 
@@ -4601,7 +4608,7 @@ int hugetlb_sysctl_handler(struct ctl_table *table, int write,
 }
 
 #ifdef CONFIG_NUMA
-int hugetlb_mempolicy_sysctl_handler(struct ctl_table *table, int write,
+static int hugetlb_mempolicy_sysctl_handler(struct ctl_table *table, int write,
                          void *buffer, size_t *length, loff_t *ppos)
 {
        return hugetlb_sysctl_handler_common(true, table, write,
@@ -4609,7 +4616,7 @@ int hugetlb_mempolicy_sysctl_handler(struct ctl_table *table, int write,
 }
 #endif /* CONFIG_NUMA */
 
-int hugetlb_overcommit_handler(struct ctl_table *table, int write,
+static int hugetlb_overcommit_handler(struct ctl_table *table, int write,
                void *buffer, size_t *length, loff_t *ppos)
 {
        struct hstate *h = &default_hstate;
@@ -4638,6 +4645,44 @@ out:
        return ret;
 }
 
+static struct ctl_table hugetlb_table[] = {
+       {
+               .procname       = "nr_hugepages",
+               .data           = NULL,
+               .maxlen         = sizeof(unsigned long),
+               .mode           = 0644,
+               .proc_handler   = hugetlb_sysctl_handler,
+       },
+#ifdef CONFIG_NUMA
+       {
+               .procname       = "nr_hugepages_mempolicy",
+               .data           = NULL,
+               .maxlen         = sizeof(unsigned long),
+               .mode           = 0644,
+               .proc_handler   = &hugetlb_mempolicy_sysctl_handler,
+       },
+#endif
+       {
+               .procname       = "hugetlb_shm_group",
+               .data           = &sysctl_hugetlb_shm_group,
+               .maxlen         = sizeof(gid_t),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec,
+       },
+       {
+               .procname       = "nr_overcommit_hugepages",
+               .data           = NULL,
+               .maxlen         = sizeof(unsigned long),
+               .mode           = 0644,
+               .proc_handler   = hugetlb_overcommit_handler,
+       },
+       { }
+};
+
+static void hugetlb_sysctl_init(void)
+{
+       register_sysctl_init("vm", hugetlb_table);
+}
 #endif /* CONFIG_SYSCTL */
 
 void hugetlb_report_meminfo(struct seq_file *m)