From: Ard Biesheuvel <ardb@kernel.org>
To: linux-arm-kernel@lists.infradead.org, linux@armlinux.org.uk
Cc: Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Kees Cook <keescook@chromium.org>,
Keith Packard <keithpac@amazon.com>,
Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH v2 5/9] ARM: export dump_mem() to other objects
Date: Tue, 5 Oct 2021 09:15:38 +0200 [thread overview]
Message-ID: <20211005071542.3127341-6-ardb@kernel.org> (raw)
In-Reply-To: <20211005071542.3127341-1-ardb@kernel.org>
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>
---
arch/arm/include/asm/stacktrace.h | 2 ++
arch/arm/kernel/traps.c | 7 +++----
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h
index 2d76a2e29f05..e86f55155500 100644
--- a/arch/arm/include/asm/stacktrace.h
+++ b/arch/arm/include/asm/stacktrace.h
@@ -27,5 +27,7 @@ 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 195dff58bafc..e4698605bb72 100644
--- 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;
--
2.30.2
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next prev parent reply other threads:[~2021-10-05 7:19 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-05 7:15 [PATCH v2 0/9] ARM: add support for IRQ stacks Ard Biesheuvel
2021-10-05 7:15 ` [PATCH v2 1/9] ARM: remove some dead code Ard Biesheuvel
2021-10-05 12:06 ` Arnd Bergmann
2021-10-05 7:15 ` [PATCH v2 2/9] ARM: assembler: introduce bl_r and bl_m macros Ard Biesheuvel
2021-10-05 12:10 ` Arnd Bergmann
2021-10-05 12:14 ` Ard Biesheuvel
2021-10-05 7:15 ` [PATCH v2 3/9] ARM: optimize indirect call to handle_arch_irq for v7 cores Ard Biesheuvel
2021-10-05 12:11 ` Arnd Bergmann
2021-10-05 7:15 ` [PATCH v2 4/9] ARM: unwind: support unwinding across multiple stacks Ard Biesheuvel
2021-10-05 12:17 ` Arnd Bergmann
2021-10-05 7:15 ` Ard Biesheuvel [this message]
2021-10-05 12:15 ` [PATCH v2 5/9] ARM: export dump_mem() to other objects Arnd Bergmann
2021-10-05 7:15 ` [PATCH v2 6/9] ARM: unwind: dump exception stack from calling frame Ard Biesheuvel
2021-10-05 12:20 ` Arnd Bergmann
2021-10-05 7:15 ` [PATCH v2 7/9] ARM: implement IRQ stacks Ard Biesheuvel
2021-10-05 12:26 ` Arnd Bergmann
2021-10-05 7:15 ` [PATCH v2 8/9] ARM: call_with_stack: add unwind support Ard Biesheuvel
2021-10-05 12:22 ` Arnd Bergmann
2021-10-05 18:46 ` Nick Desaulniers
2021-10-05 18:57 ` Ard Biesheuvel
2021-10-05 7:15 ` [PATCH v2 9/9] ARM: run softirqs on the per-CPU IRQ stack Ard Biesheuvel
2021-10-05 12:23 ` Arnd Bergmann
2021-10-06 15:21 ` Ard Biesheuvel
2021-10-11 23:29 ` [PATCH v2 0/9] ARM: add support for IRQ stacks Keith Packard
2021-10-16 22:04 ` Linus Walleij
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