How to use set_cpu_state_serial method in lisa

Best Python code snippet using lisa_python

cpusuite.py

Source:cpusuite.py Github

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...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....

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common.py

Source:common.py Github

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...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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