WARNING: line length of 100 exceeds 80 columns
#118: FILE: arch/riscv/include/asm/ftrace.h:189:
+static __always_inline unsigned long ftrace_regs_get_return_address(const struct ftrace_regs *fregs)

WARNING: line length of 82 exceeds 80 columns
#256: FILE: include/linux/fprobe.h:150:
+#define MAX_FPROBE_DATA_SIZE		(MAX_FPROBE_DATA_SIZE_WORD * sizeof(long))

CHECK: Prefer using the BIT macro
#301: FILE: kernel/trace/fprobe.c:19:
+#define FPROBE_IP_TABLE_SIZE (1 << FPROBE_IP_HASH_BITS)

CHECK: Prefer using the BIT macro
#312: FILE: kernel/trace/fprobe.c:22:
+#define FPROBE_TABLE_SIZE (1 << FPROBE_HASH_BITS)

CHECK: Macro argument 'x' may be better as '(x)' to avoid precedence issues
#315: FILE: kernel/trace/fprobe.c:24:
+#define SIZE_IN_LONG(x) ((x + sizeof(long) - 1) >> (sizeof(long) == 8 ? 3 : 2))

CHECK: Please use a blank line after function/struct/union/enum declarations
#367: FILE: kernel/trace/fprobe.c:65:
+}
+NOKPROBE_SYMBOL(find_first_fprobe_node);

CHECK: Please use a blank line after function/struct/union/enum declarations
#435: FILE: kernel/trace/fprobe.c:109:
+}
+NOKPROBE_SYMBOL(is_fprobe_still_exist);

WARNING: line length of 84 exceeds 80 columns
#485: FILE: kernel/trace/fprobe.c:152:
+#define FPROBE_HEADER_SIZE_IN_LONG	SIZE_IN_LONG(sizeof(struct __fprobe_header))

WARNING: line length of 83 exceeds 80 columns
#496: FILE: kernel/trace/fprobe.c:155:
+					struct fprobe *fp, unsigned int size_words)

CHECK: Alignment should match open parenthesis
#496: FILE: kernel/trace/fprobe.c:155:
+static inline bool write_fprobe_header(unsigned long *stack,
+					struct fprobe *fp, unsigned int size_words)

WARNING: line length of 85 exceeds 80 columns
#509: FILE: kernel/trace/fprobe.c:168:
+					struct fprobe **fp, unsigned int *size_words)

CHECK: Alignment should match open parenthesis
#509: FILE: kernel/trace/fprobe.c:168:
+static inline void read_fprobe_header(unsigned long *stack,
+					struct fprobe **fp, unsigned int *size_words)

WARNING: line length of 84 exceeds 80 columns
#536: FILE: kernel/trace/fprobe.c:195:
+static inline int __fprobe_kprobe_handler(unsigned long ip, unsigned long parent_ip,

WARNING: line length of 87 exceeds 80 columns
#537: FILE: kernel/trace/fprobe.c:196:
+					  struct fprobe *fp, struct ftrace_regs *fregs,

CHECK: multiple assignments should be avoided
#585: FILE: kernel/trace/fprobe.c:231:
+	first = node = find_first_fprobe_node(func);

WARNING: line length of 81 exceeds 80 columns
#597: FILE: kernel/trace/fprobe.c:243:
+		 * Since fprobe can be enabled until the next loop, we ignore the

WARNING: line length of 87 exceeds 80 columns
#601: FILE: kernel/trace/fprobe.c:247:
+			FPROBE_HEADER_SIZE_IN_LONG + SIZE_IN_LONG(fp->entry_data_size);

WARNING: line length of 92 exceeds 80 columns
#605: FILE: kernel/trace/fprobe.c:251:
+		fgraph_data = fgraph_reserve_data(gops->idx, reserved_words * sizeof(long));

WARNING: line length of 85 exceeds 80 columns
#646: FILE: kernel/trace/fprobe.c:287:
+			ret = __fprobe_kprobe_handler(func, ret_ip, fp, fregs, data);

WARNING: line length of 97 exceeds 80 columns
#650: FILE: kernel/trace/fprobe.c:291:
+		/* If entry_handler returns !0, nmissed is not counted but skips exit_handler. */

WARNING: line length of 84 exceeds 80 columns
#654: FILE: kernel/trace/fprobe.c:295:
+			if (write_fprobe_header(&fgraph_data[used], fp, size_words))

CHECK: Please use a blank line after function/struct/union/enum declarations
#664: FILE: kernel/trace/fprobe.c:305:
+}
+NOKPROBE_SYMBOL(fprobe_entry);

CHECK: Please use a blank line after function/struct/union/enum declarations
#700: FILE: kernel/trace/fprobe.c:341:
+}
+NOKPROBE_SYMBOL(fprobe_return);

CHECK: Please use a blank line after function/struct/union/enum declarations
#706: FILE: kernel/trace/fprobe.c:347:
+};
+static int fprobe_graph_active;

WARNING: line length of 82 exceeds 80 columns
#774: FILE: kernel/trace/fprobe.c:422:
+static int filter_match_callback(void *data, const char *name, unsigned long addr)

WARNING: line length of 84 exceeds 80 columns
#816: FILE: kernel/trace/fprobe.c:447:
+	struct filter_match_data match = { .filter = filter, .notfilter = notfilter,

WARNING: line length of 82 exceeds 80 columns
#823: FILE: kernel/trace/fprobe.c:454:
+	ret = module_kallsyms_on_each_symbol(NULL, filter_match_callback, &match);

total: 0 errors, 16 warnings, 11 checks, 1029 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 b95e2d596027 ("fprobe: Rewrite fprobe on function-graph tracer") 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, 16 warnings, 11 checks, 1029 lines checked