CHECK: struct mutex definition without comment
#58: FILE: include/linux/bpf.h:1729:
+	struct mutex st_ops_assoc_mutex;

WARNING: line length of 87 exceeds 80 columns
#77: FILE: include/linux/bpf.h:2081:
+static inline int bpf_prog_assoc_struct_ops(struct bpf_prog *prog, struct bpf_map *map)

CHECK: Please use a blank line after function/struct/union/enum declarations
#77: FILE: include/linux/bpf.h:2081:
 }
+static inline int bpf_prog_assoc_struct_ops(struct bpf_prog *prog, struct bpf_map *map)

CHECK: Please use a blank line after function/struct/union/enum declarations
#81: FILE: include/linux/bpf.h:2085:
+}
+static inline void bpf_prog_disassoc_struct_ops(struct bpf_prog *prog)

WARNING: line length of 81 exceeds 80 columns
#84: FILE: include/linux/bpf.h:2088:
+static inline void *bpf_prog_get_assoc_struct_ops(const struct bpf_prog_aux *aux)

CHECK: Please use a blank line after function/struct/union/enum declarations
#84: FILE: include/linux/bpf.h:2088:
+}
+static inline void *bpf_prog_get_assoc_struct_ops(const struct bpf_prog_aux *aux)

WARNING: please, no space before tabs
#100: FILE: include/uapi/linux/bpf.h:922:
+ * ^IDescription$

WARNING: please, no space before tabs
#101: FILE: include/uapi/linux/bpf.h:923:
+ * ^I^IAssociate a BPF program with a struct_ops map. The struct_ops$

WARNING: please, no space before tabs
#102: FILE: include/uapi/linux/bpf.h:924:
+ * ^I^Imap is identified by *map_fd* and the BPF program is$

WARNING: please, no space before tabs
#103: FILE: include/uapi/linux/bpf.h:925:
+ * ^I^Iidentified by *prog_fd*.$

WARNING: please, no space before tabs
#105: FILE: include/uapi/linux/bpf.h:927:
+ * ^IReturn$

WARNING: please, no space before tabs
#106: FILE: include/uapi/linux/bpf.h:928:
+ * ^I^I0 on success or -1 if an error occurred (in which case,$

WARNING: please, no space before tabs
#107: FILE: include/uapi/linux/bpf.h:929:
+ * ^I^I*errno* is set appropriately).$

WARNING: line length of 90 exceeds 80 columns
#243: FILE: kernel/bpf/bpf_struct_ops.c:1478:
+	if (smp_load_acquire(&st_map->kvalue.common.state) == BPF_STRUCT_OPS_STATE_INIT) {

WARNING: memory barrier without comment
#243: FILE: kernel/bpf/bpf_struct_ops.c:1478:
+	if (smp_load_acquire(&st_map->kvalue.common.state) == BPF_STRUCT_OPS_STATE_INIT) {

WARNING: please, no space before tabs
#356: FILE: tools/include/uapi/linux/bpf.h:922:
+ * ^IDescription$

WARNING: please, no space before tabs
#357: FILE: tools/include/uapi/linux/bpf.h:923:
+ * ^I^IAssociate a BPF program with a struct_ops map. The struct_ops$

WARNING: please, no space before tabs
#358: FILE: tools/include/uapi/linux/bpf.h:924:
+ * ^I^Imap is identified by *map_fd* and the BPF program is$

WARNING: please, no space before tabs
#359: FILE: tools/include/uapi/linux/bpf.h:925:
+ * ^I^Iidentified by *prog_fd*.$

WARNING: please, no space before tabs
#361: FILE: tools/include/uapi/linux/bpf.h:927:
+ * ^IReturn$

WARNING: please, no space before tabs
#362: FILE: tools/include/uapi/linux/bpf.h:928:
+ * ^I^I0 on success or -1 if an error occurred (in which case,$

WARNING: please, no space before tabs
#363: FILE: tools/include/uapi/linux/bpf.h:929:
+ * ^I^I*errno* is set appropriately).$

total: 0 errors, 18 warnings, 4 checks, 297 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 90f0e16d74cc ("bpf: Support associating BPF program with struct_ops") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 18 warnings, 4 checks, 297 lines checked