logging: Postpone log processing when no backends enabled (05b854c1) · Commits · Wenxi XU / zephyr

In initial state of the system it is possible that no backends are yet enabled and log processing is triggered. In that case logs were discarded. A flag has been added to the log core to do processing only if at least one backend is enabled. It is applicable only to initial phase. If backends are disabled in application lifetime logs will be discarded. Signed-off-by:

Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>

subsys/logging/log_core.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,7 @@ static u8_t __noinit __aligned(sizeof(u32_t))
		static struct log_list_t list;
		static atomic_t initialized;
		static bool panic_mode;
		static bool backend_attached;
		static atomic_t buffered_cnt;
		static k_tid_t proc_tid;

		@@ -278,6 +279,7 @@ void log_init(void)
		}

		log_backend_activate(backend, NULL);
		backend_attached = true;
		}
		}
		}
		@@ -375,6 +377,9 @@ bool log_process(bool bypass)
		{
		struct log_msg *msg;

		if (!backend_attached) {
		return false;
		}
		unsigned int key = irq_lock();

		msg = log_list_head_get(&list);
		@@ -477,6 +482,7 @@ void log_backend_enable(struct log_backend const *const backend,
		{
		backend_filter_set(backend, level);
		log_backend_activate(backend, ctx);
		backend_attached = true;
		}

		void log_backend_disable(struct log_backend const *const backend)

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