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qemu-e2k/hmp-commands-info.hx
zhenwei pi 00d60cfcbd monitor: Support specified vCPU registers 
Originally we have to get all the vCPU registers and parse the
specified one. To improve the performance of this usage, allow user
specified vCPU id to query registers.

Run a VM with 16 vCPU, use bcc tool to track the latency of
'hmp_info_registers':
'info registers -a' uses about 3ms;
'info registers 12' uses about 150us.

Cc: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-Id: <20220802073720.1236988-2-pizhenwei@bytedance.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2022-09-15 11:58:37 +01:00

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HXCOMM Use DEFHEADING() to define headings in both help text and rST.
HXCOMM Text between SRST and ERST is copied to the rST version and
HXCOMM discarded from C version.
HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
HXCOMM monitor info commands
HXCOMM HXCOMM can be used for comments, discarded from both rST and C.
HXCOMM
HXCOMM In this file, generally SRST fragments should have two extra
HXCOMM spaces of indent, so that the documentation list item for "info foo"
HXCOMM appears inside the documentation list item for the top level
HXCOMM "info" documentation entry. The exception is the first SRST
HXCOMM fragment that defines that top level entry.
SRST
``info`` *subcommand*
Show various information about the system state.
ERST
{
.name = "version",
.args_type = "",
.params = "",
.help = "show the version of QEMU",
.cmd = hmp_info_version,
.flags = "p",
},
SRST
``info version``
Show the version of QEMU.
ERST
{
.name = "network",
.args_type = "",
.params = "",
.help = "show the network state",
.cmd = hmp_info_network,
},
SRST
``info network``
Show the network state.
ERST
{
.name = "chardev",
.args_type = "",
.params = "",
.help = "show the character devices",
.cmd = hmp_info_chardev,
.flags = "p",
},
SRST
``info chardev``
Show the character devices.
ERST
{
.name = "block",
.args_type = "nodes:-n,verbose:-v,device:B?",
.params = "[-n] [-v] [device]",
.help = "show info of one block device or all block devices "
"(-n: show named nodes; -v: show details)",
.cmd = hmp_info_block,
},
SRST
``info block``
Show info of one block device or all block devices.
ERST
{
.name = "blockstats",
.args_type = "",
.params = "",
.help = "show block device statistics",
.cmd = hmp_info_blockstats,
},
SRST
``info blockstats``
Show block device statistics.
ERST
{
.name = "block-jobs",
.args_type = "",
.params = "",
.help = "show progress of ongoing block device operations",
.cmd = hmp_info_block_jobs,
},
SRST
``info block-jobs``
Show progress of ongoing block device operations.
ERST
{
.name = "registers",
.args_type = "cpustate_all:-a,vcpu:i?",
.params = "[-a|vcpu]",
.help = "show the cpu registers (-a: show register info for all cpus;"
" vcpu: specific vCPU to query; show the current CPU's registers if"
" no argument is specified)",
.cmd = hmp_info_registers,
},
SRST
``info registers``
Show the cpu registers.
ERST
#if defined(TARGET_I386)
{
.name = "lapic",
.args_type = "apic-id:i?",
.params = "[apic-id]",
.help = "show local apic state (apic-id: local apic to read, default is which of current CPU)",
.cmd = hmp_info_local_apic,
},
#endif
SRST
``info lapic``
Show local APIC state
ERST
{
.name = "cpus",
.args_type = "",
.params = "",
.help = "show infos for each CPU",
.cmd = hmp_info_cpus,
},
SRST
``info cpus``
Show infos for each CPU.
ERST
{
.name = "history",
.args_type = "",
.params = "",
.help = "show the command line history",
.cmd = hmp_info_history,
.flags = "p",
},
SRST
``info history``
Show the command line history.
ERST
{
.name = "irq",
.args_type = "",
.params = "",
.help = "show the interrupts statistics (if available)",
.cmd_info_hrt = qmp_x_query_irq,
},
SRST
``info irq``
Show the interrupts statistics (if available).
ERST
{
.name = "pic",
.args_type = "",
.params = "",
.help = "show PIC state",
.cmd = hmp_info_pic,
},
SRST
``info pic``
Show PIC state.
ERST
{
.name = "rdma",
.args_type = "",
.params = "",
.help = "show RDMA state",
.cmd_info_hrt = qmp_x_query_rdma,
},
SRST
``info rdma``
Show RDMA state.
ERST
{
.name = "pci",
.args_type = "",
.params = "",
.help = "show PCI info",
.cmd = hmp_info_pci,
},
SRST
``info pci``
Show PCI information.
ERST
#if defined(TARGET_I386) || defined(TARGET_SH4) || defined(TARGET_SPARC) || \
defined(TARGET_PPC) || defined(TARGET_XTENSA) || defined(TARGET_M68K)
{
.name = "tlb",
.args_type = "",
.params = "",
.help = "show virtual to physical memory mappings",
.cmd = hmp_info_tlb,
},
#endif
SRST
``info tlb``
Show virtual to physical memory mappings.
ERST
#if defined(TARGET_I386) || defined(TARGET_RISCV)
{
.name = "mem",
.args_type = "",
.params = "",
.help = "show the active virtual memory mappings",
.cmd = hmp_info_mem,
},
#endif
SRST
``info mem``
Show the active virtual memory mappings.
ERST
{
.name = "mtree",
.args_type = "flatview:-f,dispatch_tree:-d,owner:-o,disabled:-D",
.params = "[-f][-d][-o][-D]",
.help = "show memory tree (-f: dump flat view for address spaces;"
"-d: dump dispatch tree, valid with -f only);"
"-o: dump region owners/parents;"
"-D: dump disabled regions",
.cmd = hmp_info_mtree,
},
SRST
``info mtree``
Show memory tree.
ERST
#if defined(CONFIG_TCG)
{
.name = "jit",
.args_type = "",
.params = "",
.help = "show dynamic compiler info",
},
#endif
SRST
``info jit``
Show dynamic compiler info.
ERST
#if defined(CONFIG_TCG)
{
.name = "opcount",
.args_type = "",
.params = "",
.help = "show dynamic compiler opcode counters",
},
#endif
SRST
``info opcount``
Show dynamic compiler opcode counters
ERST
{
.name = "sync-profile",
.args_type = "mean:-m,no_coalesce:-n,max:i?",
.params = "[-m] [-n] [max]",
.help = "show synchronization profiling info, up to max entries "
"(default: 10), sorted by total wait time. (-m: sort by "
"mean wait time; -n: do not coalesce objects with the "
"same call site)",
.cmd = hmp_info_sync_profile,
},
SRST
``info sync-profile [-m|-n]`` [*max*]
Show synchronization profiling info, up to *max* entries (default: 10),
sorted by total wait time.
``-m``
sort by mean wait time
``-n``
do not coalesce objects with the same call site
When different objects that share the same call site are coalesced,
the "Object" field shows---enclosed in brackets---the number of objects
being coalesced.
ERST
{
.name = "kvm",
.args_type = "",
.params = "",
.help = "show KVM information",
.cmd = hmp_info_kvm,
},
SRST
``info kvm``
Show KVM information.
ERST
{
.name = "numa",
.args_type = "",
.params = "",
.help = "show NUMA information",
.cmd_info_hrt = qmp_x_query_numa,
},
SRST
``info numa``
Show NUMA information.
ERST
{
.name = "usb",
.args_type = "",
.params = "",
.help = "show guest USB devices",
.cmd_info_hrt = qmp_x_query_usb,
},
SRST
``info usb``
Show guest USB devices.
ERST
{
.name = "usbhost",
.args_type = "",
.params = "",
.help = "show host USB devices",
},
SRST
``info usbhost``
Show host USB devices.
ERST
#if defined(CONFIG_TCG)
{
.name = "profile",
.args_type = "",
.params = "",
.help = "show profiling information",
.cmd_info_hrt = qmp_x_query_profile,
},
#endif
SRST
``info profile``
Show profiling information.
ERST
{
.name = "capture",
.args_type = "",
.params = "",
.help = "show capture information",
.cmd = hmp_info_capture,
},
SRST
``info capture``
Show capture information.
ERST
{
.name = "snapshots",
.args_type = "",
.params = "",
.help = "show the currently saved VM snapshots",
.cmd = hmp_info_snapshots,
},
SRST
``info snapshots``
Show the currently saved VM snapshots.
ERST
{
.name = "status",
.args_type = "",
.params = "",
.help = "show the current VM status (running|paused)",
.cmd = hmp_info_status,
.flags = "p",
},
SRST
``info status``
Show the current VM status (running|paused).
ERST
{
.name = "mice",
.args_type = "",
.params = "",
.help = "show which guest mouse is receiving events",
.cmd = hmp_info_mice,
},
SRST
``info mice``
Show which guest mouse is receiving events.
ERST
#if defined(CONFIG_VNC)
{
.name = "vnc",
.args_type = "",
.params = "",
.help = "show the vnc server status",
.cmd = hmp_info_vnc,
},
#endif
SRST
``info vnc``
Show the vnc server status.
ERST
#if defined(CONFIG_SPICE)
{
.name = "spice",
.args_type = "",
.params = "",
.help = "show the spice server status",
.cmd = hmp_info_spice,
},
#endif
SRST
``info spice``
Show the spice server status.
ERST
{
.name = "name",
.args_type = "",
.params = "",
.help = "show the current VM name",
.cmd = hmp_info_name,
.flags = "p",
},
SRST
``info name``
Show the current VM name.
ERST
{
.name = "uuid",
.args_type = "",
.params = "",
.help = "show the current VM UUID",
.cmd = hmp_info_uuid,
.flags = "p",
},
SRST
``info uuid``
Show the current VM UUID.
ERST
#if defined(CONFIG_SLIRP)
{
.name = "usernet",
.args_type = "",
.params = "",
.help = "show user network stack connection states",
.cmd = hmp_info_usernet,
},
#endif
SRST
``info usernet``
Show user network stack connection states.
ERST
{
.name = "migrate",
.args_type = "",
.params = "",
.help = "show migration status",
.cmd = hmp_info_migrate,
},
SRST
``info migrate``
Show migration status.
ERST
{
.name = "migrate_capabilities",
.args_type = "",
.params = "",
.help = "show current migration capabilities",
.cmd = hmp_info_migrate_capabilities,
},
SRST
``info migrate_capabilities``
Show current migration capabilities.
ERST
{
.name = "migrate_parameters",
.args_type = "",
.params = "",
.help = "show current migration parameters",
.cmd = hmp_info_migrate_parameters,
},
SRST
``info migrate_parameters``
Show current migration parameters.
ERST
{
.name = "balloon",
.args_type = "",
.params = "",
.help = "show balloon information",
.cmd = hmp_info_balloon,
},
SRST
``info balloon``
Show balloon information.
ERST
{
.name = "qtree",
.args_type = "",
.params = "",
.help = "show device tree",
.cmd = hmp_info_qtree,
},
SRST
``info qtree``
Show device tree.
ERST
{
.name = "qdm",
.args_type = "",
.params = "",
.help = "show qdev device model list",
.cmd = hmp_info_qdm,
},
SRST
``info qdm``
Show qdev device model list.
ERST
{
.name = "qom-tree",
.args_type = "path:s?",
.params = "[path]",
.help = "show QOM composition tree",
.cmd = hmp_info_qom_tree,
.flags = "p",
},
SRST
``info qom-tree``
Show QOM composition tree.
ERST
{
.name = "roms",
.args_type = "",
.params = "",
.help = "show roms",
.cmd_info_hrt = qmp_x_query_roms,
},
SRST
``info roms``
Show roms.
ERST
{
.name = "trace-events",
.args_type = "name:s?,vcpu:i?",
.params = "[name] [vcpu]",
.help = "show available trace-events & their state "
"(name: event name pattern; vcpu: vCPU to query, default is any)",
.cmd = hmp_info_trace_events,
.command_completion = info_trace_events_completion,
},
SRST
``info trace-events``
Show available trace-events & their state.
ERST
{
.name = "tpm",
.args_type = "",
.params = "",
.help = "show the TPM device",
.cmd = hmp_info_tpm,
},
SRST
``info tpm``
Show the TPM device.
ERST
{
.name = "memdev",
.args_type = "",
.params = "",
.help = "show memory backends",
.cmd = hmp_info_memdev,
.flags = "p",
},
SRST
``info memdev``
Show memory backends
ERST
{
.name = "memory-devices",
.args_type = "",
.params = "",
.help = "show memory devices",
.cmd = hmp_info_memory_devices,
},
SRST
``info memory-devices``
Show memory devices.
ERST
{
.name = "iothreads",
.args_type = "",
.params = "",
.help = "show iothreads",
.cmd = hmp_info_iothreads,
.flags = "p",
},
SRST
``info iothreads``
Show iothread's identifiers.
ERST
{
.name = "rocker",
.args_type = "name:s",
.params = "name",
.help = "Show rocker switch",
.cmd = hmp_rocker,
},
SRST
``info rocker`` *name*
Show rocker switch.
ERST
{
.name = "rocker-ports",
.args_type = "name:s",
.params = "name",
.help = "Show rocker ports",
.cmd = hmp_rocker_ports,
},
SRST
``info rocker-ports`` *name*-ports
Show rocker ports.
ERST
{
.name = "rocker-of-dpa-flows",
.args_type = "name:s,tbl_id:i?",
.params = "name [tbl_id]",
.help = "Show rocker OF-DPA flow tables",
.cmd = hmp_rocker_of_dpa_flows,
},
SRST
``info rocker-of-dpa-flows`` *name* [*tbl_id*]
Show rocker OF-DPA flow tables.
ERST
{
.name = "rocker-of-dpa-groups",
.args_type = "name:s,type:i?",
.params = "name [type]",
.help = "Show rocker OF-DPA groups",
.cmd = hmp_rocker_of_dpa_groups,
},
SRST
``info rocker-of-dpa-groups`` *name* [*type*]
Show rocker OF-DPA groups.
ERST
#if defined(TARGET_S390X)
{
.name = "skeys",
.args_type = "addr:l",
.params = "address",
.help = "Display the value of a storage key",
.cmd = hmp_info_skeys,
},
#endif
SRST
``info skeys`` *address*
Display the value of a storage key (s390 only)
ERST
#if defined(TARGET_S390X)
{
.name = "cmma",
.args_type = "addr:l,count:l?",
.params = "address [count]",
.help = "Display the values of the CMMA storage attributes for a range of pages",
.cmd = hmp_info_cmma,
},
#endif
SRST
``info cmma`` *address*
Display the values of the CMMA storage attributes for a range of
pages (s390 only)
ERST
{
.name = "dump",
.args_type = "",
.params = "",
.help = "Display the latest dump status",
.cmd = hmp_info_dump,
},
SRST
``info dump``
Display the latest dump status.
ERST
{
.name = "ramblock",
.args_type = "",
.params = "",
.help = "Display system ramblock information",
.cmd_info_hrt = qmp_x_query_ramblock,
},
SRST
``info ramblock``
Dump all the ramblocks of the system.
ERST
{
.name = "hotpluggable-cpus",
.args_type = "",
.params = "",
.help = "Show information about hotpluggable CPUs",
.cmd = hmp_hotpluggable_cpus,
.flags = "p",
},
SRST
``info hotpluggable-cpus``
Show information about hotpluggable CPUs
ERST
{
.name = "vm-generation-id",
.args_type = "",
.params = "",
.help = "Show Virtual Machine Generation ID",
.cmd = hmp_info_vm_generation_id,
},
SRST
``info vm-generation-id``
Show Virtual Machine Generation ID
ERST
{
.name = "memory_size_summary",
.args_type = "",
.params = "",
.help = "show the amount of initially allocated and "
"present hotpluggable (if enabled) memory in bytes.",
.cmd = hmp_info_memory_size_summary,
},
SRST
``info memory_size_summary``
Display the amount of initially allocated and present hotpluggable (if
enabled) memory in bytes.
ERST
#if defined(TARGET_I386)
{
.name = "sev",
.args_type = "",
.params = "",
.help = "show SEV information",
.cmd = hmp_info_sev,
},
#endif
SRST
``info sev``
Show SEV information.
ERST
{
.name = "replay",
.args_type = "",
.params = "",
.help = "show record/replay information",
.cmd = hmp_info_replay,
},
SRST
``info replay``
Display the record/replay information: mode and the current icount.
ERST
{
.name = "dirty_rate",
.args_type = "",
.params = "",
.help = "show dirty rate information",
.cmd = hmp_info_dirty_rate,
},
SRST
``info dirty_rate``
Display the vcpu dirty rate information.
ERST
{
.name = "vcpu_dirty_limit",
.args_type = "",
.params = "",
.help = "show dirty page limit information of all vCPU",
.cmd = hmp_info_vcpu_dirty_limit,
},
SRST
``info vcpu_dirty_limit``
Display the vcpu dirty page limit information.
ERST
#if defined(TARGET_I386)
{
.name = "sgx",
.args_type = "",
.params = "",
.help = "show intel SGX information",
.cmd = hmp_info_sgx,
},
#endif
SRST
``info sgx``
Show intel SGX information.
ERST
#if defined(CONFIG_MOS6522)
{
.name = "via",
.args_type = "",
.params = "",
.help = "show guest mos6522 VIA devices",
.cmd = hmp_info_via,
},
#endif
SRST
``info via``
Show guest mos6522 VIA devices.
ERST
{
.name = "stats",
.args_type = "target:s,names:s?,provider:s?",
.params = "target [names] [provider]",
.help = "show statistics for the given target (vm or vcpu); optionally filter by"
"name (comma-separated list, or * for all) and provider",
.cmd = hmp_info_stats,
},
SRST
``stats``
Show runtime-collected statistics
ERST
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