ARM: export dump_mem() to other objects

The unwind info based stack unwinder will make its own call to
dump_mem() to dump the exception stack, so give it external linkage.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Keith Packard <keithpac@amazon.com>
Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M

diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h
index 8f54f9ad8a9b93ae756471e0d60f01d665a38f7a..33ee1aa4b8c0edf6213b196447dace8368ef2e7e 100644 (file)
--- a/arch/arm/include/asm/stacktrace.h
+++ b/arch/arm/include/asm/stacktrace.h
@@ -36,5 +36,7 @@ void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame)
 extern int unwind_frame(struct stackframe *frame);
 extern void walk_stackframe(struct stackframe *frame,
                            int (*fn)(struct stackframe *, void *), void *data);
+extern void dump_mem(const char *lvl, const char *str, unsigned long bottom,
+                    unsigned long top);
 
 #endif /* __ASM_STACKTRACE_H */

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 195dff58bafc73277667a2f3f45badd3490022cc..e4698605bb724e082c92d85a36fdc48227f8f16b 100644 (file)
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -35,6 +35,7 @@
 #include <asm/ptrace.h>
 #include <asm/unwind.h>
 #include <asm/tls.h>
+#include <asm/stacktrace.h>
 #include <asm/system_misc.h>
 #include <asm/opcodes.h>
 
@@ -60,8 +61,6 @@ static int __init user_debug_setup(char *str)
 __setup("user_debug=", user_debug_setup);
 #endif
 
-static void dump_mem(const char *, const char *, unsigned long, unsigned long);
-
 void dump_backtrace_entry(unsigned long where, unsigned long from,
                          unsigned long frame, const char *loglvl)
 {
@@ -118,8 +117,8 @@ static int verify_stack(unsigned long sp)
 /*
  * Dump out the contents of some memory nicely...
  */
-static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
-                    unsigned long top)
+void dump_mem(const char *lvl, const char *str, unsigned long bottom,
+             unsigned long top)
 {
        unsigned long first;
        int i;