diff options
Diffstat (limited to 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 34 |
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 :-) |