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Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index ba4d9e85feb8..86e0771352f2 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -224,6 +224,9 @@ static int proc_dostring_coredump(struct ctl_table *table, int write,
#endif
static int proc_dopipe_max_size(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
+static int proc_dointvec_minmax_bpf_stats(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos);
#ifdef CONFIG_MAGIC_SYSRQ
/* Note: sysrq code uses its own private copy */
@@ -1230,6 +1233,15 @@ static struct ctl_table kern_table[] = {
.extra2 = &one,
},
#endif
+ {
+ .procname = "bpf_stats_enabled",
+ .data = &sysctl_bpf_stats_enabled,
+ .maxlen = sizeof(sysctl_bpf_stats_enabled),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax_bpf_stats,
+ .extra1 = &zero,
+ .extra2 = &one,
+ },
#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU)
{
.procname = "panic_on_rcu_stall",
@@ -3260,6 +3272,28 @@ int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
#endif /* CONFIG_PROC_SYSCTL */
+static int proc_dointvec_minmax_bpf_stats(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ int ret, bpf_stats = *(int *)table->data;
+ struct ctl_table tmp = *table;
+
+ if (write && !capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ tmp.data = &bpf_stats;
+ ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
+ if (write && !ret) {
+ *(int *)table->data = bpf_stats;
+ if (bpf_stats)
+ static_branch_enable(&bpf_stats_enabled_key);
+ else
+ static_branch_disable(&bpf_stats_enabled_key);
+ }
+ return ret;
+}
+
/*
* No sense putting this after each symbol definition, twice,
* exception granted :-)