WARNING: please, no spaces at the start of a line
#117: FILE: kernel/bpf/trampoline.c:1443:
+    defined(CONFIG_HAVE_SINGLE_FTRACE_DIRECT_OPS)$

WARNING: line length of 86 exceeds 80 columns
#132: FILE: kernel/bpf/trampoline.c:1458:
+static int register_fentry_multi(struct bpf_trampoline *tr, void *new_addr, void *ptr)

CHECK: No space is necessary after a cast
#134: FILE: kernel/bpf/trampoline.c:1460:
+	unsigned long addr = (unsigned long) new_addr;

WARNING: line length of 93 exceeds 80 columns
#143: FILE: kernel/bpf/trampoline.c:1469:
+static int unregister_fentry_multi(struct bpf_trampoline *tr, u32 orig_flags, void *old_addr,

CHECK: No space is necessary after a cast
#146: FILE: kernel/bpf/trampoline.c:1472:
+	unsigned long addr = (unsigned long) old_addr;

WARNING: line length of 81 exceeds 80 columns
#152: FILE: kernel/bpf/trampoline.c:1478:
+	return add_ftrace_hash_entry_direct(data->unreg, ip, addr) ? 0 : -ENOMEM;

WARNING: line length of 89 exceeds 80 columns
#155: FILE: kernel/bpf/trampoline.c:1481:
+static int modify_fentry_multi(struct bpf_trampoline *tr, u32 orig_flags, void *old_addr,

WARNING: line length of 81 exceeds 80 columns
#156: FILE: kernel/bpf/trampoline.c:1482:
+			       void *new_addr, bool lock_direct_mutex, void *ptr)

CHECK: No space is necessary after a cast
#158: FILE: kernel/bpf/trampoline.c:1484:
+	unsigned long addr = (unsigned long) new_addr;

WARNING: line length of 82 exceeds 80 columns
#164: FILE: kernel/bpf/trampoline.c:1490:
+	return add_ftrace_hash_entry_direct(data->modify, ip, addr) ? 0 : -ENOMEM;

WARNING: line length of 84 exceeds 80 columns
#173: FILE: kernel/bpf/trampoline.c:1499:
+static int bpf_get_btf_id_target(struct btf *btf, struct bpf_prog *prog, u32 btf_id,

WARNING: line length of 91 exceeds 80 columns
#240: FILE: kernel/bpf/trampoline.c:1566:
+			err = btf_id_allow_sleepable(btf_id, tgt_info.tgt_addr, prog, btf);

WARNING: line length of 87 exceeds 80 columns
#262: FILE: kernel/bpf/trampoline.c:1588:
+		err = __bpf_trampoline_link_prog(&mnode->node, mnode->trampoline, NULL,

WARNING: line length of 86 exceeds 80 columns
#277: FILE: kernel/bpf/trampoline.c:1603:
+			WARN_ON_ONCE(update_ftrace_direct_del(&direct_ops, data.reg));

WARNING: line length of 90 exceeds 80 columns
#290: FILE: kernel/bpf/trampoline.c:1616:
+		WARN_ON_ONCE(__bpf_trampoline_unlink_prog(&mnode->node, mnode->trampoline,

CHECK: Alignment should match open parenthesis
#291: FILE: kernel/bpf/trampoline.c:1617:
+		WARN_ON_ONCE(__bpf_trampoline_unlink_prog(&mnode->node, mnode->trampoline,
+					NULL, &trampoline_multi_ops, &data));

WARNING: line length of 91 exceeds 80 columns
#305: FILE: kernel/bpf/trampoline.c:1631:
+int bpf_trampoline_multi_detach(struct bpf_prog *prog, struct bpf_tracing_multi_link *link)

WARNING: line length of 90 exceeds 80 columns
#323: FILE: kernel/bpf/trampoline.c:1649:
+		WARN_ON_ONCE(__bpf_trampoline_unlink_prog(&mnode->node, mnode->trampoline,

CHECK: Alignment should match open parenthesis
#324: FILE: kernel/bpf/trampoline.c:1650:
+		WARN_ON_ONCE(__bpf_trampoline_unlink_prog(&mnode->node, mnode->trampoline,
+					NULL, &trampoline_multi_ops, &data));

WARNING: line length of 87 exceeds 80 columns
#330: FILE: kernel/bpf/trampoline.c:1656:
+		WARN_ON_ONCE(update_ftrace_direct_mod(&direct_ops, data.modify, true));

WARNING: line length of 92 exceeds 80 columns
#341: FILE: kernel/bpf/trampoline.c:1667:
+#endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS && CONFIG_HAVE_SINGLE_FTRACE_DIRECT_OPS */

total: 0 errors, 16 warnings, 5 checks, 284 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 c4f187dad1e1 ("bpf: Add bpf_trampoline_multi_attach/detach functions") 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, 16 warnings, 5 checks, 284 lines checked