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How to use set_cpu_state_serial method in lisa

Best Python code snippet using lisa_python

cpusuite.py

Source:cpusuite.py

...189        # current max channel will be cpu_count - len(idle_cpus)190        # check channels of synthetic network adapter align with current setting channel191        try:192            # take idle cpu to offline193            set_cpu_state_serial(log, node, idle_cpus, CPUState.OFFLINE)194            # get vmbus channels of synthetic network adapter. the synthetic network195            # drivers have class id "f8615163-df3e-46c5-913f-f2d2f965ed0e"196            node.tools[Lsvmbus].get_device_channels(force_run=True)197            cpu_count = node.tools[Lscpu].get_core_count()198            # current max channel count need minus count of idle cpus199            max_channel_count = cpu_count - len(idle_cpus)200            # change current channel201            first_channel_count = random.randint(1, min(max_channel_count, 64))202            node.tools[Ethtool].change_device_channels_info("eth0", first_channel_count)203            # verify that the added channels do not handle interrupts on offline cpu204            lsvmbus_channels = node.tools[Lsvmbus].get_device_channels(force_run=True)205            for channel in lsvmbus_channels:206                # verify synthetic network adapter channels align with expected value207                if channel.class_id == "f8615163-df3e-46c5-913f-f2d2f965ed0e":208                    log.debug(f"Network synthetic channel: {channel}")209                    assert_that(channel.channel_vp_map).is_length(first_channel_count)210                # verify that devices do not handle interrupts on offline cpu211                for channel_vp in channel.channel_vp_map:212                    assert_that(channel_vp.target_cpu).is_not_in(idle_cpus)213            # reset idle cpu to online214            set_cpu_state_serial(log, node, idle_cpus, CPUState.ONLINE)215            # reset max and current channel count into original ones216            # by reloading hv_netvsc driver217            node.tools[Modprobe].reload(["hv_netvsc"])218            # change the combined channels count after all cpus online219            second_channel_count = random.randint(1, min(cpu_count, 64))220            while True:221                if first_channel_count != second_channel_count:222                    break223                second_channel_count = random.randint(1, min(cpu_count, 64))224            node.tools[Ethtool].change_device_channels_info(225                "eth0", second_channel_count226            )227            # verify that the network adapter channels count changed228            # into new channel count229            lsvmbus_channels = node.tools[Lsvmbus].get_device_channels(force_run=True)230            for channel in lsvmbus_channels:231                # verify that channels were added to synthetic network adapter232                if channel.class_id == "f8615163-df3e-46c5-913f-f2d2f965ed0e":233                    log.debug(f"Network synthetic channel: {channel}")234                    assert_that(channel.channel_vp_map).is_length(second_channel_count)235        finally:236            # reset idle cpu to online237            set_cpu_state_serial(log, node, idle_cpus, CPUState.ONLINE)238            # restore channel count into origin value239            current_device_channel = (240                node.tools[Ethtool].get_device_channels_info("eth0", True)241            ).current_channels242            if current_device_channel != origin_device_channel:243                node.tools[Ethtool].change_device_channels_info(244                    "eth0", origin_device_channel245                )246            # when kernel doesn't support set vmbus channels target cpu feature, the247            # dict which stores original status is empty, nothing need to be restored....

common.py

Source:common.py

...65    all_cpu = list(range(1, cpu_count))66    # get the idle cpu by excluding in used cpu from all cpu67    idle_cpu = [str(x) for x in all_cpu if str(x) not in cpu_in_used]68    return idle_cpu69def set_cpu_state_serial(70    log: Logger, node: Node, idle_cpu: List[str], state: str71) -> None:72    for target_cpu in idle_cpu:73        log.debug(f"setting cpu{target_cpu} to {state}.")74        if state == CPUState.ONLINE:75            set_state = set_cpu_state(node, target_cpu, True)76        else:77            set_state = set_cpu_state(node, target_cpu, False)78        if not set_state:79            raise BadEnvironmentStateException(80                (81                    f"Expected cpu{target_cpu} state: {state}."82                    f"The test failed leaving cpu{target_cpu} in a bad state."83                ),...

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