Commit 8cdfdf7f authored by Ard Biesheuvel's avatar Ard Biesheuvel
Browse files

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: default avatarArd Biesheuvel <ardb@kernel.org>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Tested-by: default avatarKeith Packard <keithpac@amazon.com>
Tested-by: default avatarMarc Zyngier <maz@kernel.org>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
parent b6506981

arch/arm/include/asm/stacktrace.h

+2 −0
Original line number Diff line number Diff line
@@ -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 */

arch/arm/kernel/traps.c

+3 −4
Original line number Diff line number Diff line
@@ -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)

{
@@ -118,7 +117,7 @@ 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,

void dump_mem(const char *lvl, const char *str, unsigned long bottom,

	      unsigned long top)

{

	unsigned long first;