arch: exception: Add Kconfig EXCEPTION_DUMP_HOOK_ONLY

Add Kconfig option EXCEPTION_DUMP_HOOK_ONLY. If the option is selected
the exception dumps are sent only to the exception hook. Sometimes even
the attempt to log in the exception routine may hang the system.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

arch/common/Kconfig

@@ -39,6 +39,13 @@ config EXCEPTION_DUMP_HOOK
 	  Enables hook for configuring an additional method for delivering
 	  exeption prints through similar interface as printk or LOG.
 
+config EXCEPTION_DUMP_HOOK_ONLY
+	bool "Do not send exception prints to logs or printk if hook is set"
+	depends on EXCEPTION_DUMP_HOOK
+	help
+	  Do not send exception prints to logs or printk if the exception
+	  hook is set.
+
 config ARM_MPU
 	bool "ARM MPU Support"
 	select MPU

include/zephyr/arch/exception.h

@@ -87,7 +87,9 @@ static inline void arch_exception_call_dump_hook(const char *format, ...)
 	}
 }
 
-#if defined(CONFIG_LOG)
+#if defined(CONFIG_EXCEPTION_DUMP_HOOK_ONLY)
+#define EXCEPTION_DUMP(format, ...) arch_exception_call_dump_hook(format "\n",  ##__VA_ARGS__)
+#elif defined(CONFIG_LOG)
 #define EXCEPTION_DUMP(format, ...) arch_exception_call_dump_hook(format "\n",  ##__VA_ARGS__); \
 	LOG_ERR(format, ##__VA_ARGS__)
 #else