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

CHECK: No space is necessary after a cast
#54: FILE: kernel/bpf/trampoline.c:45:
+		if (tr->func.addr == (void *) ip)

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

WARNING: please, no spaces at the start of a line
#90: FILE: kernel/bpf/trampoline.c:171:
+       .ops_func = bpf_tramp_ftrace_ops_func,$

CHECK: Please use a blank line after function/struct/union/enum declarations
#98: FILE: kernel/bpf/trampoline.c:179:
+}
+static void direct_ops_clear(struct bpf_trampoline *tr) { }

total: 0 errors, 3 warnings, 2 checks, 174 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 6426ab40ef63 ("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 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, 3 warnings, 2 checks, 174 lines checked