WARNING: line length of 96 exceeds 80 columns
#358: FILE: kernel/bpf/ringbuf.c:172:
+static struct bpf_ringbuf *bpf_ringbuf_alloc(size_t data_sz, int numa_node, bool overwrite_mode)

WARNING: line length of 97 exceeds 80 columns
#393: FILE: kernel/bpf/ringbuf.c:219:
+	rb_map->rb = bpf_ringbuf_alloc(attr->max_entries, rb_map->map.numa_node, overwrite_mode);

WARNING: memory barrier without comment
#416: FILE: kernel/bpf/ringbuf.c:319:
+		over_pos = smp_load_acquire(&rb->overwrite_pos);

WARNING: memory barrier without comment
#417: FILE: kernel/bpf/ringbuf.c:320:
+		prod_pos = smp_load_acquire(&rb->producer_pos);

WARNING: else is not generally useful after a break or return
#419: FILE: kernel/bpf/ringbuf.c:322:
+		return prod_pos - max(cons_pos, over_pos);
+	} else {

WARNING: memory barrier without comment
#420: FILE: kernel/bpf/ringbuf.c:323:
+		prod_pos = smp_load_acquire(&rb->producer_pos);

WARNING: line length of 82 exceeds 80 columns
#463: FILE: kernel/bpf/ringbuf.c:460:
+	unsigned long cons_pos, prod_pos, new_prod_pos, pend_pos, over_pos, flags;

WARNING: line length of 81 exceeds 80 columns
#494: FILE: kernel/bpf/ringbuf.c:494:
+	/* In overwrite mode, advance overwrite_pos when the ring buffer is full.

WARNING: line length of 85 exceeds 80 columns
#495: FILE: kernel/bpf/ringbuf.c:495:
+	 * The key points are to stay on record boundaries and consume enough records

WARNING: line length of 85 exceeds 80 columns
#503: FILE: kernel/bpf/ringbuf.c:503:
+			/* The bpf_ringbuf_has_space() check above ensures we won’t

WARNING: line length of 82 exceeds 80 columns
#504: FILE: kernel/bpf/ringbuf.c:504:
+			 * step over a record currently being worked on by another

WARNING: memory barrier without comment
#527: FILE: kernel/bpf/ringbuf.c:649:
+		return smp_load_acquire(&rb->overwrite_pos);

total: 0 errors, 12 warnings, 0 checks, 226 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 650c061662da ("bpf: Add overwrite mode for BPF ring buffer") 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, 12 warnings, 0 checks, 226 lines checked