Merge "soc:qcom: Add support to log time taken ipi pings" (8e8bdade) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/soc/qcom/watchdog_v2.c

+14 −2

Original line number	Diff line number	Diff line
		@@ -96,6 +96,10 @@ struct msm_watchdog_data {

		bool timer_expired;
		bool user_pet_complete;
		unsigned long long timer_fired;
		unsigned long long thread_start;
		unsigned long long ping_start[NR_CPUS];
		unsigned long long ping_end[NR_CPUS];
		};

		/*
		@@ -374,6 +378,7 @@ static void keep_alive_response(void *info)
		struct msm_watchdog_data wdog_dd = (struct msm_watchdog_data )info;

		cpumask_set_cpu(cpu, &wdog_dd->alive_mask);
		wdog_dd->ping_end[cpu] = sched_clock();
		/* Make sure alive mask is cleared and set in order */
		smp_mb();
		}
		@@ -390,17 +395,20 @@ static void ping_other_cpus(struct msm_watchdog_data *wdog_dd)
		/* Make sure alive mask is cleared and set in order */
		smp_mb();
		for_each_cpu(cpu, cpu_online_mask) {
		if (!cpu_idle_pc_state[cpu] && !cpu_isolated(cpu))
		if (!cpu_idle_pc_state[cpu] && !cpu_isolated(cpu)) {
		wdog_dd->ping_start[cpu] = sched_clock();
		smp_call_function_single(cpu, keep_alive_response,
		wdog_dd, 1);
		}
		}
		}

		static void pet_task_wakeup(unsigned long data)
		{
		struct msm_watchdog_data *wdog_dd =
		(struct msm_watchdog_data *)data;
		wdog_dd->timer_expired = true;
		wdog_dd->timer_fired = sched_clock();
		wake_up(&wdog_dd->pet_complete);
		}

		@@ -410,7 +418,7 @@ static __ref int watchdog_kthread(void *arg)
		(struct msm_watchdog_data *)arg;
		unsigned long delay_time = 0;
		struct sched_param param = {.sched_priority = MAX_RT_PRIO-1};
		int ret;
		int ret, cpu;

		sched_setscheduler(current, SCHED_FIFO, &param);
		while (!kthread_should_stop()) {
		@@ -419,6 +427,10 @@ static __ref int watchdog_kthread(void *arg)
		wdog_dd->timer_expired);
		} while (ret != 0);

		wdog_dd->thread_start = sched_clock();
		for_each_cpu(cpu, cpu_present_mask)
		wdog_dd->ping_start[cpu] = wdog_dd->ping_end[cpu] = 0;

		if (wdog_dd->do_ipi_ping)
		ping_other_cpus(wdog_dd);