WARNING: line length of 84 exceeds 80 columns
#293: FILE: include/linux/bpf.h:1555:
+				disable_private_stack:1; /* Disable private stack */

WARNING: line length of 89 exceeds 80 columns
#342: FILE: kernel/bpf/syscall.c:2832:
+	prog->disable_private_stack = !!(attr->prog_flags & BPF_F_DISABLE_PRIVATE_STACK);

WARNING: externs should be avoided in .c files
#388: FILE: tools/testing/selftests/bpf/bench.c:285:
+extern struct argp bench_private_stack_argp;

WARNING: externs should be avoided in .c files
#404: FILE: tools/testing/selftests/bpf/bench.c:547:
+extern const struct bench bench_no_private_stack;

WARNING: externs should be avoided in .c files
#405: FILE: tools/testing/selftests/bpf/bench.c:548:
+extern const struct bench bench_private_stack;

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#419: 
new file mode 100644

ERROR: code indent should use tabs where possible
#446: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:23:
+        { "nr-batch-iters", ARG_NR_BATCH_ITERS, "NR_BATCH_ITERS",$

WARNING: please, no spaces at the start of a line
#446: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:23:
+        { "nr-batch-iters", ARG_NR_BATCH_ITERS, "NR_BATCH_ITERS",$

ERROR: code indent should use tabs where possible
#448: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:25:
+        {},$

WARNING: please, no spaces at the start of a line
#448: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:25:
+        {},$

WARNING: line length of 84 exceeds 80 columns
#451: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:28:
+static error_t private_stack_parse_arg(int key, char *arg, struct argp_state *state)

ERROR: code indent should use tabs where possible
#455: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:32:
+        switch (key) {$

WARNING: please, no spaces at the start of a line
#455: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:32:
+        switch (key) {$

ERROR: code indent should use tabs where possible
#456: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:33:
+        case ARG_NR_BATCH_ITERS:$

WARNING: please, no spaces at the start of a line
#456: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:33:
+        case ARG_NR_BATCH_ITERS:$

ERROR: code indent should use tabs where possible
#457: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:34:
+                ret = strtoul(arg, NULL, 10);$

WARNING: please, no spaces at the start of a line
#457: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:34:
+                ret = strtoul(arg, NULL, 10);$

ERROR: code indent should use tabs where possible
#461: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:38:
+                break;$

WARNING: please, no spaces at the start of a line
#461: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:38:
+                break;$

ERROR: code indent should use tabs where possible
#462: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:39:
+        default:$

ERROR: code indent should use tabs where possible
#463: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:40:
+                return ARGP_ERR_UNKNOWN;$

WARNING: please, no spaces at the start of a line
#463: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:40:
+                return ARGP_ERR_UNKNOWN;$

ERROR: code indent should use tabs where possible
#464: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:41:
+        }$

WARNING: please, no spaces at the start of a line
#464: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:41:
+        }$

ERROR: code indent should use tabs where possible
#466: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:43:
+        return 0;$

WARNING: please, no spaces at the start of a line
#466: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:43:
+        return 0;$

ERROR: code indent should use tabs where possible
#470: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:47:
+        .options = opts,$

WARNING: please, no spaces at the start of a line
#470: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:47:
+        .options = opts,$

ERROR: code indent should use tabs where possible
#471: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:48:
+        .parser = private_stack_parse_arg,$

WARNING: please, no spaces at the start of a line
#471: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:48:
+        .parser = private_stack_parse_arg,$

ERROR: space required before the open parenthesis '('
#491: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:68:
+	if(!skel) {

WARNING: line length of 100 exceeds 80 columns
#499: FILE: tools/testing/selftests/bpf/benchs/bench_private_stack.c:76:
+		bpf_program__set_flags(skel->progs.stack0, old_flags | BPF_F_DISABLE_PRIVATE_STACK);

WARNING: line length of 94 exceeds 80 columns
#582: FILE: tools/testing/selftests/bpf/benchs/run_bench_private_stack.sh:9:
+    summarize "no-private-stack-${b}: " "$($RUN_BENCH --nr-batch-iters=${b} no-private-stack)"

WARNING: line length of 88 exceeds 80 columns
#583: FILE: tools/testing/selftests/bpf/benchs/run_bench_private_stack.sh:10:
+    summarize "private-stack-${b}: " "$($RUN_BENCH --nr-batch-iters=${b} private-stack)"

ERROR: code indent should use tabs where possible
#601: FILE: tools/testing/selftests/bpf/progs/private_stack.c:11:
+        unsigned int d[12];$

WARNING: please, no spaces at the start of a line
#601: FILE: tools/testing/selftests/bpf/progs/private_stack.c:11:
+        unsigned int d[12];$

ERROR: code indent should use tabs where possible
#605: FILE: tools/testing/selftests/bpf/progs/private_stack.c:15:
+        __uint(type, BPF_MAP_TYPE_HASH);$

WARNING: please, no spaces at the start of a line
#605: FILE: tools/testing/selftests/bpf/progs/private_stack.c:15:
+        __uint(type, BPF_MAP_TYPE_HASH);$

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#612: FILE: tools/testing/selftests/bpf/progs/private_stack.c:22:
+const volatile int batch_iters = 0;

total: 15 errors, 24 warnings, 0 checks, 294 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.

NOTE: Whitespace errors detected.
      You may wish to use scripts/cleanpatch or scripts/cleanfile

Commit fb1c62b8c05a ("selftests/bpf: Benchmark runtime performance with private stack") 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.