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Commit c21eae30 authored by Murali Nalajala's avatar Murali Nalajala
Browse files

cpuidle: lpm-levels: Log power state id into lpm debug 



lpm driver sends the power state id information to PSCI
framework to do LPMs. Log this information into lpm debug
array. This is information is very useful to root cause
the stability issues from the power front.

Change-Id: Id797b6c7aa79a4c78f9373c7fd0a5f258a50b108
Signed-off-by: default avatarMurali Nalajala <mnalajal@codeaurora.org>
parent e5523bbc

drivers/cpuidle/lpm-levels.c

+13 −7
Original line number Diff line number Diff line
@@ -763,12 +763,18 @@ bool psci_enter_sleep(struct lpm_cluster *cluster, int idx, bool from_idle) 
		int state_id = get_cluster_id(cluster, &affinity_level);

		int power_state =

			PSCI_POWER_STATE(cluster->cpu->levels[idx].is_reset);

		bool success = false;



		affinity_level = PSCI_AFFINITY_LEVEL(affinity_level);

		state_id |= (power_state | affinity_level

			| cluster->cpu->levels[idx].psci_id);



		return !cpu_suspend(state_id);

		update_debug_pc_event(CPU_ENTER, state_id,

						0xdeaffeed, 0xdeaffeed, true);

		success = !cpu_suspend(state_id);

		update_debug_pc_event(CPU_EXIT, state_id,

						success, 0xdeaffeed, true);

		return success;

	}

}

#else
@@ -810,18 +816,18 @@ static int lpm_cpuidle_enter(struct cpuidle_device *dev, 
	cluster_prepare(cluster, cpumask, idx, true);

	trace_cpu_idle_enter(idx);

	lpm_stats_cpu_enter(idx);

	if (idx > 0)



	if (idx > 0 && !use_psci) {

		update_debug_pc_event(CPU_ENTER, idx, 0xdeaffeed, 0xdeaffeed,

					true);

	if (!use_psci)

		success = msm_cpu_pm_enter_sleep(cluster->cpu->levels[idx].mode,

				true);

	else

		success = psci_enter_sleep(cluster, idx, true);



	if (idx > 0)

		update_debug_pc_event(CPU_EXIT, idx, success, 0xdeaffeed,

					true);

	} else {

		success = psci_enter_sleep(cluster, idx, true);

	}



	lpm_stats_cpu_exit(idx, success);

	trace_cpu_idle_exit(idx, success);

	cluster_unprepare(cluster, cpumask, idx, true);