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acpica: retrieve static battery info only once
On Fujitsu S936, evaluating the _BIF method on each battery-info update successively increased the RAM usage, while _BST (dynamic battery status) and _STA (generic status) did not show this behavior. Therefore this commit retrieves only dynamic information periodically (resp. on SCI IRQ). Now, acpica hast static RAM usage in idle state for 24+ hours. The root cause for the increased RAM usage is still shady. While it could just be normal that it grows until a certain yet unknown limit, there may also be memory leak in contrib code or some strange AML on the designated notebook. Issue #3454
This commit is contained in:
Christian Helmuth
parent
a7835650e8
commit
ce149397ec
@ -11,35 +11,166 @@
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* under the terms of the GNU Affero General Public License version 3.
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*/
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class Battery : Acpica::Callback<Battery> {
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class Battery : Acpica::Callback<Battery>
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{
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private:
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Acpica::Reportstate * _report;
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ACPI_HANDLE _sb;
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/*
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* ACPI spec - 10.2.2.1 _BIF (Battery Information)
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* (alternatively 10.2.2.2 _BIX could be used)
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*/
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Acpica::Buffer<char [512]> _battery;
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Genode::String<16> _battery_name;
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void _init_static_info()
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{
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ACPI_STATUS res = AcpiEvaluateObjectTyped(_sb, ACPI_STRING("_BIF"),
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nullptr, &_battery,
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ACPI_TYPE_PACKAGE);
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ACPI_OBJECT * obj = reinterpret_cast<ACPI_OBJECT *>(_battery.object);
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if (ACPI_FAILURE(res) || !obj || obj->Package.Count != 13) {
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Genode::error("failed - '", __func__, "' _BIF res=", Genode::Hex(res));
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return;
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}
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Acpica::Buffer<char [8]> battery_name;
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res = AcpiGetName(_sb, ACPI_SINGLE_NAME, &battery_name);
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if (ACPI_FAILURE(res)) {
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_battery_name = Genode::String<16>("unknown");
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} else {
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_battery_name = Genode::String<16>(battery_name.object);
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}
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}
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void _info(Genode::Xml_generator &xml)
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{
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xml.node("name", [&] { xml.append(_battery_name.string()); });
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const char * node_name[] = {
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"powerunit", "design_capacity", "last_full_capacity",
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"technology", "voltage", "warning_capacity", "low_capacity",
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"granularity1", "granularity2", "serial", "model", "type",
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"oem"
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};
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ACPI_OBJECT * obj = reinterpret_cast<ACPI_OBJECT *>(_battery.object);
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if (sizeof(node_name) / sizeof(node_name[0]) != obj->Package.Count)
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return;
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for (unsigned i = 0; i < 9; i++) {
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ACPI_OBJECT * v = &obj->Package.Elements[i];
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xml.node(node_name[i], [&] {
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if (v->Type != ACPI_TYPE_INTEGER) {
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xml.append("unknown");
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return;
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}
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xml.attribute("value", v->Integer.Value);
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if (i == 0)
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xml.append(v->Integer.Value == 0 ? "mW/mWh" :
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v->Integer.Value == 1 ? "mA/mAh" :
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"unknown");
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if (i == 3)
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xml.append(v->Integer.Value == 0 ? "primary" :
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v->Integer.Value == 1 ? "secondary" :
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"unknown");
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});
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}
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for (unsigned i = 9; i < obj->Package.Count; i++) {
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ACPI_OBJECT * v = &obj->Package.Elements[i];
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xml.node(node_name[i], [&] {
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if (v->Type != ACPI_TYPE_STRING)
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return;
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xml.append(v->String.Pointer);
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});
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}
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}
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void _status(Genode::Xml_generator &xml)
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{
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/* 10.2.2.6 _BST (Battery Status) */
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Acpica::Buffer<char [256]> dynamic;
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ACPI_STATUS res = AcpiEvaluateObjectTyped(_sb, ACPI_STRING("_BST"),
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nullptr, &dynamic,
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ACPI_TYPE_PACKAGE);
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ACPI_OBJECT * obj = reinterpret_cast<ACPI_OBJECT *>(dynamic.object);
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if (ACPI_FAILURE(res) || !obj ||
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obj->Package.Count != 4) {
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Genode::error("failed - '", __func__, "' _BST res=", Genode::Hex(res));
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return;
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}
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Acpica::Buffer<ACPI_OBJECT> sta;
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res = AcpiEvaluateObjectTyped(_sb, ACPI_STRING("_STA"), nullptr,
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&sta, ACPI_TYPE_INTEGER);
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if (ACPI_FAILURE(res)) {
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xml.node("status", [&] { xml.append("unknown"); });
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} else
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xml.node("status", [&] {
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xml.attribute("value", sta.object.Integer.Value);
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/* see "6.3.7 _STA" for more human readable decoding */
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if (!(sta.object.Integer.Value & ACPI_STA_BATTERY_PRESENT))
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xml.append("battery not present");
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});
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const char * node_name[] = {
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"state", "present_rate", "remaining_capacity",
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"present_voltage"
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};
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if (sizeof(node_name) / sizeof(node_name[0]) != obj->Package.Count)
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return;
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for (unsigned i = 0; i < obj->Package.Count; i++) {
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ACPI_OBJECT * v = &obj->Package.Elements[i];
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xml.node(node_name[i], [&] {
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if (v->Type != ACPI_TYPE_INTEGER) {
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xml.append("unknown");
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return;
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}
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xml.attribute("value", v->Integer.Value);
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if (i != 0)
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return;
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if (v->Integer.Value & 0x1) xml.append("discharging");
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if (v->Integer.Value & 0x2) xml.append("charging");
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if (v->Integer.Value & 0x4) xml.append("critical low");
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});
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}
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}
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public:
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Battery(void * report, ACPI_HANDLE sb)
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: _report(reinterpret_cast<Acpica::Reportstate *>(report)), _sb(sb)
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{
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_init_static_info();
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if (_report)
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_report->add_notify(this);
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}
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void handle(ACPI_HANDLE sb, UINT32 value)
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{
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if (_report)
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_report->battery_event();
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}
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static ACPI_STATUS detect(ACPI_HANDLE sb, UINT32, void *m, void **)
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{
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Acpica::Main * main = reinterpret_cast<Acpica::Main *>(m);
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Battery * dev_obj = new (main->heap) Battery(main->report, sb);
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ACPI_STATUS res = AcpiInstallNotifyHandler (sb, ACPI_DEVICE_NOTIFY,
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handler, dev_obj);
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ACPI_STATUS res =
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AcpiInstallNotifyHandler(sb, ACPI_DEVICE_NOTIFY,
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Acpica::Callback<Battery>::handler,
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dev_obj);
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if (ACPI_FAILURE(res)) {
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Genode::error("failed - '", __func__, "' "
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"res=", Genode::Hex(res));
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@ -48,7 +179,7 @@ class Battery : Acpica::Callback<Battery> {
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}
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Acpica::Buffer<char [8]> battery_name;
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AcpiGetName (sb, ACPI_SINGLE_NAME, &battery_name);
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res = AcpiGetName (sb, ACPI_SINGLE_NAME, &battery_name);
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if (ACPI_FAILURE(res)) {
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Genode::error("failed - '", __func__, "' battery name "
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"res=", Genode::Hex(res));
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@ -106,130 +237,19 @@ class Battery : Acpica::Callback<Battery> {
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return AE_OK;
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}
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/*
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* Acpica::Callback<> interface
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*/
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void handle(ACPI_HANDLE sb, UINT32 value)
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{
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if (_report)
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_report->battery_event();
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}
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void generate(Genode::Xml_generator &xml)
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{
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info(xml);
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status(xml);
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}
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void info(Genode::Xml_generator &xml)
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{
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/* ACPI spec - 10.2.2.1 _BIF (Battery Information) */
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Acpica::Buffer<char [512]> battery;
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ACPI_STATUS res = AcpiEvaluateObjectTyped(_sb, ACPI_STRING("_BIF"),
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nullptr, &battery,
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ACPI_TYPE_PACKAGE);
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ACPI_OBJECT * obj = reinterpret_cast<ACPI_OBJECT *>(battery.object);
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if (ACPI_FAILURE(res) || !obj || obj->Package.Count != 13) {
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Genode::error("failed - '", __func__, "' _BIF res=", Genode::Hex(res));
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return;
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}
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Acpica::Buffer<char [8]> battery_name;
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AcpiGetName (_sb, ACPI_SINGLE_NAME, &battery_name);
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if (ACPI_FAILURE(res))
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xml.node("name", [&] { xml.append("unknown"); });
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else
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xml.node("name", [&] { xml.append(battery_name.object); });
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const char * node_name[] = {
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"powerunit", "design_capacity", "last_full_capacity",
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"technology", "voltage", "warning_capacity", "low_capacity",
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"granularity1", "granularity2", "serial", "model", "type",
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"oem"
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};
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if (sizeof(node_name) / sizeof(node_name[0]) != obj->Package.Count)
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return;
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for (unsigned i = 0; i < 9; i++) {
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ACPI_OBJECT * v = &obj->Package.Elements[i];
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xml.node(node_name[i], [&] {
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if (v->Type != ACPI_TYPE_INTEGER) {
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xml.append("unknown");
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return;
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}
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xml.attribute("value", v->Integer.Value);
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if (i == 0)
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xml.append(v->Integer.Value == 0 ? "mW/mWh" :
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v->Integer.Value == 1 ? "mA/mAh" :
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"unknown");
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if (i == 3)
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xml.append(v->Integer.Value == 0 ? "primary" :
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v->Integer.Value == 1 ? "secondary" :
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"unknown");
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});
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}
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for (unsigned i = 9; i < obj->Package.Count; i++) {
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ACPI_OBJECT * v = &obj->Package.Elements[i];
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xml.node(node_name[i], [&] {
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if (v->Type != ACPI_TYPE_STRING)
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return;
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xml.append(v->String.Pointer);
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});
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}
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}
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void status(Genode::Xml_generator &xml)
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{
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/* 10.2.2.6 _BST (Battery Status) */
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Acpica::Buffer<char [256]> dynamic;
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ACPI_STATUS res = AcpiEvaluateObjectTyped(_sb, ACPI_STRING("_BST"),
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nullptr, &dynamic,
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ACPI_TYPE_PACKAGE);
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ACPI_OBJECT * obj = reinterpret_cast<ACPI_OBJECT *>(dynamic.object);
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if (ACPI_FAILURE(res) || !obj ||
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obj->Package.Count != 4) {
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Genode::error("failed - '", __func__, "' _BST res=", Genode::Hex(res));
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return;
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}
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Acpica::Buffer<ACPI_OBJECT> sta;
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res = AcpiEvaluateObjectTyped(_sb, ACPI_STRING("_STA"), nullptr,
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&sta, ACPI_TYPE_INTEGER);
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if (ACPI_FAILURE(res)) {
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xml.node("status", [&] { xml.append("unknown"); });
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} else
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xml.node("status", [&] {
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xml.attribute("value", sta.object.Integer.Value);
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/* see "6.3.7 _STA" for more human readable decoding */
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if (!(sta.object.Integer.Value & ACPI_STA_BATTERY_PRESENT))
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xml.append("battery not present");
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});
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const char * node_name[] = {
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"state", "present_rate", "remaining_capacity",
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"present_voltage"
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};
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if (sizeof(node_name) / sizeof(node_name[0]) != obj->Package.Count)
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return;
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for (unsigned i = 0; i < obj->Package.Count; i++) {
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ACPI_OBJECT * v = &obj->Package.Elements[i];
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xml.node(node_name[i], [&] {
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if (v->Type != ACPI_TYPE_INTEGER) {
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xml.append("unknown");
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return;
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}
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xml.attribute("value", v->Integer.Value);
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if (i != 0)
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return;
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if (v->Integer.Value & 0x1) xml.append("discharging");
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if (v->Integer.Value & 0x2) xml.append("charging");
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if (v->Integer.Value & 0x4) xml.append("critical low");
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});
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}
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_info(xml);
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_status(xml);
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}
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};
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