On 5/17/23 10:59 AM, Aditi Ghag wrote:
static int btf_populate_kfunc_set(struct btf *btf, enum btf_kfunc_hook hook,
- struct btf_id_set8 *add_set)
+ const struct btf_kfunc_id_set *kset)
{
+ struct btf_kfunc_hook_filter *hook_filter;
+ struct btf_id_set8 *add_set = kset->set;
bool vmlinux_set = !btf_is_module(btf);
+ bool add_filter = !!kset->filter;
struct btf_kfunc_set_tab *tab;
struct btf_id_set8 *set;
u32 set_cnt;
@@ -7737,6 +7747,20 @@ static int btf_populate_kfunc_set(struct btf *btf, enum btf_kfunc_hook hook,
return 0;
tab = btf->kfunc_set_tab;
+
+ if (tab && add_filter) {
+ int i;
+
+ hook_filter = &tab->hook_filters[hook];
+ for (i = 0; i < hook_filter->nr_filters; i++) {
+ if (hook_filter->filters[i] == kset->filter)
+ add_filter = false;
Just noticed that this missed a "break;" that can save some unnecessary loops.
It seems it needs to respin one more time to clarify the patch 1 commit message.
Please also move patch 9 before patch 6 adding the 'bpf: Add bpf_sock_destroy
kfunc'. Patch 6 requires patch 9 to be safe. Then the patch 10 selftests can be
combined with patch 8 selftests as the last patch of the set.
Others lgtm.
+ }
+
+ if (add_filter && hook_filter->nr_filters == BTF_KFUNC_FILTER_MAX_CNT)
+ return -E2BIG;
+ }
+
if (!tab) {
tab = kzalloc(sizeof(*tab), GFP_KERNEL | __GFP_NOWARN);
if (!tab)
