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Commit 40f6a6ce authored by Santosh Mardi's avatar Santosh Mardi Committed by Gerrit - the friendly Code Review server
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driver: soc: qcom: update pmu cache status for hotplug 



When the core is coming up online during hotplug, set pmu cache
status flag to PMU_MAP_INVALID until new pmu map is updated
to RIMPS. This update is needed to discard the cached pmu
values until new pmu map is sent to RIMPS and pmu cache flag
is updated to PMU_CACHE_INVALID.

Change-Id: I24fe117c4cb0e20a154b0dfe6b0af04d244d0bdc
Signed-off-by: default avatarSantosh Mardi <gsantosh@codeaurora.org>
parent 5efe1606

drivers/soc/qcom/rimps_memlat.c

+13 −3
Original line number Diff line number Diff line
@@ -87,6 +87,13 @@ enum mon_type { 
	MAX_MEMLAT_DEVICE_TYPE

};



enum pmu_cache_status {

	PMU_CACHE_INVALID,

	PMU_CACHE_VALID,

	PMU_MAP_INVALID,

	PMU_CACHE_STATUS_MAX

};



struct core_dev_map {

	u32 core_mhz;

	u32 target_freq;
@@ -702,6 +709,9 @@ static int memlat_hp_restart_events(unsigned int cpu, bool cpu_up) 


	cpumask_set_cpu(cpu, &mask);



	if (cpu_up)

		set_pmu_cache_flag(PMU_MAP_INVALID, cpu);



	if (cpu_up) {

		ret = setup_common_pmu_events(cpu_grp, &mask);

		if (ret < 0) {
@@ -751,7 +761,7 @@ static int memlat_hp_restart_events(unsigned int cpu, bool cpu_up) 
			free_mon_evs(mon, &mask);

		}

	}

	set_pmu_cache_flag(!cpu_up, cpu);

	set_pmu_cache_flag(cpu_up ? PMU_CACHE_INVALID : PMU_CACHE_VALID, cpu);

exit:

	kfree(attr);

	return ret;
@@ -813,12 +823,12 @@ static int memlat_idle_notif(struct notifier_block *nb, 
				mon = &cpu_grp->mons[i];

				save_mon_pmu_events(mon, cpu);

			}

			set_pmu_cache_flag(true, cpu);

			set_pmu_cache_flag(PMU_CACHE_VALID, cpu);

		}

		break;

	case CPU_PM_EXIT:

		__this_cpu_write(cpu_is_idle, false);

		set_pmu_cache_flag(false, cpu);

		set_pmu_cache_flag(PMU_CACHE_INVALID, cpu);

		break;

	}

idle_exit: