linux-kernel - [PATCH] gcov: add prototypes for internal functions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 17 May 2023 14:50:07 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Peter Oberparleiter <oberpar@...ux.ibm.com>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: [PATCH] gcov: add prototypes for internal functions

From: Arnd Bergmann <arnd@...db.de>

gcov uses global functions that are called from generated code,
but these have no prototype in a header, which causes a W=1
build warning:

kernel/gcov/gcc_base.c:12:6: error: no previous prototype for '__gcov_init' [-Werror=missing-prototypes]
kernel/gcov/gcc_base.c:40:6: error: no previous prototype for '__gcov_flush' [-Werror=missing-prototypes]
kernel/gcov/gcc_base.c:46:6: error: no previous prototype for '__gcov_merge_add' [-Werror=missing-prototypes]
kernel/gcov/gcc_base.c:52:6: error: no previous prototype for '__gcov_merge_single' [-Werror=missing-prototypes]

Add prototypes for all of these to an internal header.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 kernel/gcov/gcov.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/kernel/gcov/gcov.h b/kernel/gcov/gcov.h
index 912b8ea01d33..6df99772406c 100644
--- a/kernel/gcov/gcov.h
+++ b/kernel/gcov/gcov.h
@@ -82,4 +82,34 @@ extern const struct gcov_link gcov_link[];
 extern int gcov_events_enabled;
 extern struct mutex gcov_lock;
 
+void __gcov_init(struct gcov_info *info);
+void __gcov_flush(void);
+void __gcov_merge_add(gcov_type *counters, unsigned int n_counters);
+void __gcov_merge_single(gcov_type *counters, unsigned int n_counters);
+void __gcov_merge_delta(gcov_type *counters, unsigned int n_counters);
+void __gcov_merge_ior(gcov_type *counters, unsigned int n_counters);
+void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters);
+void __gcov_merge_icall_topn(gcov_type *counters, unsigned int n_counters);
+void __gcov_exit(void);
+
+size_t convert_to_gcda(char *buffer, struct gcov_info *info);
+void gcov_info_add(struct gcov_info *dst, struct gcov_info *src);
+struct gcov_info *gcov_info_dup(struct gcov_info *info);
+const char *gcov_info_filename(struct gcov_info *info);
+void gcov_info_free(struct gcov_info *info);
+int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2);
+void gcov_info_link(struct gcov_info *info);
+struct gcov_info *gcov_info_next(struct gcov_info *info);
+void gcov_info_reset(struct gcov_info *info);
+void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info);
+unsigned int gcov_info_version(struct gcov_info *info);
+bool gcov_info_within_module(struct gcov_info *info, struct module *mod);
+void llvm_gcda_emit_arcs(u32 num_counters, u64 *counters);
+void llvm_gcda_emit_function(u32 ident, u32 func_checksum, u32 cfg_checksum);
+void llvm_gcda_end_file(void);
+void llvm_gcda_start_file(const char *orig_filename, u32 version, u32 checksum);
+void llvm_gcda_summary_info(void);
+typedef void (*llvm_gcov_callback)(void);
+void llvm_gcov_init(llvm_gcov_callback writeout, llvm_gcov_callback flush);
+
 #endif /* GCOV_H */
-- 
2.39.2