CHECK: Please use a blank line after function/struct/union/enum declarations
#202: FILE: include/linux/bpf.h:1392:
 }
+int bpf_extension_link_prog(struct bpf_tramp_link *link,

WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#206: FILE: include/linux/bpf.h:1396:
+	return -ENOTSUPP;

CHECK: Please use a blank line after function/struct/union/enum declarations
#208: FILE: include/linux/bpf.h:1398:
+}
+int bpf_extension_unlink_prog(struct bpf_tramp_link *link,

WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#212: FILE: include/linux/bpf.h:1402:
+	return -ENOTSUPP;

WARNING: line length of 86 exceeds 80 columns
#222: FILE: include/linux/bpf.h:1505:
+	u64 prog_array_member_cnt; /* counts how many times as member of prog_array */

WARNING: line length of 85 exceeds 80 columns
#223: FILE: include/linux/bpf.h:1506:
+	struct mutex ext_mutex; /* mutex for is_extended and prog_array_member_cnt */

WARNING: The commit message has 'Call Trace:', perhaps it also needs a 'Fixes:' tag?

total: 0 errors, 5 warnings, 2 checks, 186 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 8135a453b98d ("bpf: Prevent tailcall infinite loop caused by freplace") 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, 5 warnings, 2 checks, 186 lines checked