hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/ICA1GK -------------------------------- This kfunc is to enable bpf progs to perform atomic read on ->usage of struct page_counter. Signed-off-by: GONG Ruiqi <gongruiqi1@huawei.com> --- kernel/bpf-rvi/common_kfuncs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/bpf-rvi/common_kfuncs.c b/kernel/bpf-rvi/common_kfuncs.c index 53b7ca1acc39..c93b1fc08395 100644 --- a/kernel/bpf-rvi/common_kfuncs.c +++ b/kernel/bpf-rvi/common_kfuncs.c @@ -4,6 +4,7 @@ #include <linux/mm.h> #include <linux/swap.h> #include <linux/types.h> +#include <linux/page_counter.h> #include <linux/btf_ids.h> #include <linux/bpf.h> @@ -37,8 +38,14 @@ __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) } } +__bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) +{ + return page_counter_read(counter); +} + BTF_SET8_START(bpf_common_kfuncs_ids) BTF_ID_FLAGS(func, bpf_si_memswinfo) +BTF_ID_FLAGS(func, bpf_page_counter_read) BTF_SET8_END(bpf_common_kfuncs_ids) static const struct btf_kfunc_id_set bpf_common_kfuncs_set = { -- 2.25.1