Merge "clk: msm: clock-cpu: Add panic handler to dump cpu frequency" (a9c0df8a) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/clk/msm/clock-cpu-8939.c

+42 −0

Original line number	Diff line number	Diff line
		@@ -700,6 +700,45 @@ static struct notifier_block clock_8939_pm_notifier_single_cluster = {
		.notifier_call = clock_8939_pm_event_single_cluster,
		};

		/**
		* clock_panic_callback() - panic notification callback function.
		* This function is invoked when a kernel panic occurs.
		* @nfb: Notifier block pointer
		* @event: Value passed unmodified to notifier function
		* @data: Pointer passed unmodified to notifier function
		*
		* Return: NOTIFY_OK
		*/
		static int clock_panic_callback(struct notifier_block *nfb,
		unsigned long event, void *data)
		{
		bool single_cluster = 0;
		unsigned long rate;
		struct device_node *ofnode = of_find_compatible_node(NULL, NULL,
		"qcom,cpu-clock-8939");
		if (!ofnode)
		ofnode = of_find_compatible_node(NULL, NULL,
		"qcom,cpu-clock-8917");
		if (ofnode)
		single_cluster = of_property_read_bool(ofnode,
		"qcom,num-cluster");

		rate = (a53_bc_clk.c.count) ? a53_bc_clk.c.rate : 0;
		pr_err("%s frequency: %10lu Hz\n", a53_bc_clk.c.dbg_name, rate);

		if (!single_cluster) {
		rate = (a53_lc_clk.c.count) ? a53_lc_clk.c.rate : 0;
		pr_err("%s frequency: %10lu Hz\n", a53_lc_clk.c.dbg_name, rate);
		}

		return NOTIFY_OK;
		}

		static struct notifier_block clock_panic_notifier = {
		.notifier_call = clock_panic_callback,
		.priority = 1,
		};

		static int clock_a53_probe(struct platform_device *pdev)
		{
		int speed_bin, version, rc, cpu, mux_id, rate;
		@@ -798,6 +837,9 @@ static int clock_a53_probe(struct platform_device *pdev)

		populate_opp_table(pdev, single_cluster);

		atomic_notifier_chain_register(&panic_notifier_list,
		&clock_panic_notifier);

		return 0;
		}

drivers/clk/msm/clock-cpu-8953.c

+31 −0

Original line number	Diff line number	Diff line
		@@ -753,6 +753,34 @@ static int cpu_parse_devicetree(struct platform_device *pdev)
		return 0;
		}

		/**
		* clock_panic_callback() - panic notification callback function.
		* This function is invoked when a kernel panic occurs.
		* @nfb: Notifier block pointer
		* @event: Value passed unmodified to notifier function
		* @data: Pointer passed unmodified to notifier function
		*
		* Return: NOTIFY_OK
		*/
		static int clock_panic_callback(struct notifier_block *nfb,
		unsigned long event, void *data)
		{
		unsigned long rate;

		rate = (a53_perf_clk.c.count) ? a53_perf_clk.c.rate : 0;
		pr_err("%s frequency: %10lu Hz\n", a53_perf_clk.c.dbg_name, rate);

		rate = (a53_pwr_clk.c.count) ? a53_pwr_clk.c.rate : 0;
		pr_err("%s frequency: %10lu Hz\n", a53_pwr_clk.c.dbg_name, rate);

		return NOTIFY_OK;
		}

		static struct notifier_block clock_panic_notifier = {
		.notifier_call = clock_panic_callback,
		.priority = 1,
		};

		static int clock_cpu_probe(struct platform_device *pdev)
		{
		int speed_bin, version, rc, cpu, mux_id;
		@@ -875,6 +903,9 @@ static int clock_cpu_probe(struct platform_device *pdev)
		a53_perf_clk.hw_low_power_ctrl = true;
		}

		atomic_notifier_chain_register(&panic_notifier_list,
		&clock_panic_notifier);

		return 0;
		}