WARNING: line length of 92 exceeds 80 columns
#50: FILE: kernel/bpf/trampoline.c:37:
+static struct bpf_trampoline *direct_ops_ip_lookup(struct ftrace_ops *ops, unsigned long ip)

WARNING: line length of 92 exceeds 80 columns
#67: FILE: kernel/bpf/trampoline.c:54:
+static struct bpf_trampoline *direct_ops_ip_lookup(struct ftrace_ops *ops, unsigned long ip)

CHECK: No space is necessary after a cast
#121: FILE: kernel/bpf/trampoline.c:198:
+	if (!add_hash_entry_direct(hash, ip, (unsigned long) addr)) {

WARNING: line length of 103 exceeds 80 columns
#150: FILE: kernel/bpf/trampoline.c:227:
+static int direct_ops_mod(struct ftrace_ops *ops, unsigned long ip, void *addr, bool lock_direct_mutex)

WARNING: line length of 103 exceeds 80 columns
#200: FILE: kernel/bpf/trampoline.c:277:
+static int direct_ops_mod(struct ftrace_ops *ops, unsigned long ip, void *addr, bool lock_direct_mutex)

WARNING: line length of 84 exceeds 80 columns
#247: FILE: kernel/bpf/trampoline.c:349:
+		ret = direct_ops_mod(tr->fops, tr->ip, new_addr, lock_direct_mutex);

total: 0 errors, 5 warnings, 1 checks, 253 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 1d62ac5022e4 ("bpf, x86: Use single ftrace_ops for direct calls") 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, 5 warnings, 1 checks, 253 lines checked