CHECK: No space is necessary after a cast
#65: FILE: kernel/bpf/arraymap.c:264:
+	*imm = (u64) array->pptrs[0];

CHECK: No space is necessary after a cast
#73: FILE: kernel/bpf/arraymap.c:272:
+	u64 base = (u64) array->pptrs[0];

WARNING: line length of 95 exceeds 80 columns
#135: FILE: kernel/bpf/verifier.c:9147:
+		verbose(env, "percpu_array map does not support direct string value access\n");

WARNING: line length of 89 exceeds 80 columns
#174: FILE: kernel/bpf/verifier.c:21336:
+			insn_buf[1] = BPF_MOV64_PERCPU_REG(insn->dst_reg, insn->dst_reg);

WARNING: line length of 86 exceeds 80 columns
#178: FILE: kernel/bpf/verifier.c:21340:
+			new_prog = bpf_patch_insn_data(env, i + delta, insn_buf, cnt);

CHECK: multiple assignments should be avoided
#183: FILE: kernel/bpf/verifier.c:21345:
+			env->prog = prog = new_prog;

CHECK: spaces preferred around that '*' (ctx:VxV)
#237: FILE: tools/lib/bpf/libbpf.c:1948:
+			memcpy(map->data + i*elem_sz, data, data_sz);
 			                    ^

CHECK: spaces preferred around that '*' (ctx:VxV)
#305: FILE: tools/lib/bpf/libbpf.c:2013:
+			memset(map->data, 0, map->num_cpus*roundup(data_sz, 8));
 			                                  ^

WARNING: line length of 89 exceeds 80 columns
#342: FILE: tools/lib/bpf/libbpf.c:5189:
+	data_sz = map_is_percpu_data(map) ? roundup(map->def.value_size, 8)*map->num_cpus

CHECK: spaces preferred around that '*' (ctx:VxV)
#342: FILE: tools/lib/bpf/libbpf.c:5189:
+	data_sz = map_is_percpu_data(map) ? roundup(map->def.value_size, 8)*map->num_cpus
 	                                                                   ^

WARNING: line length of 84 exceeds 80 columns
#401: FILE: tools/lib/bpf/libbpf.c:10445:
+	return map->def.type == BPF_MAP_TYPE_PERCPU_ARRAY ? map->data : map->mmaped;

total: 0 errors, 5 warnings, 6 checks, 329 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 7ff4d957c72c ("bpf: Introduce global percpu data") 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, 6 checks, 329 lines checked