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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC PATCH v4 2/9] xen/arm: implement HYPERVISOR_sysctl
On Tue, 4 Nov 2014, Oleksandr Dmytryshyn wrote:
> Signed-off-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx>
Why?
> arch/arm/include/asm/xen/hypercall.h | 1 +
> arch/arm/include/asm/xen/interface.h | 2 +
> arch/arm/xen/enlighten.c | 1 +
> arch/arm/xen/hypercall.S | 1 +
> include/xen/interface/sysctl.h | 646
> +++++++++++++++++++++++++++++++++++
> include/xen/interface/xen.h | 6 +
> 6 files changed, 657 insertions(+)
> create mode 100644 include/xen/interface/sysctl.h
>
> diff --git a/arch/arm/include/asm/xen/hypercall.h
> b/arch/arm/include/asm/xen/hypercall.h
> index c817c56..751869eb 100644
> --- a/arch/arm/include/asm/xen/hypercall.h
> +++ b/arch/arm/include/asm/xen/hypercall.h
> @@ -48,6 +48,7 @@ int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
> int HYPERVISOR_physdev_op(int cmd, void *arg);
> int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args);
> int HYPERVISOR_tmem_op(void *arg);
> +int HYPERVISOR_sysctl(void *arg);
>
> static inline void
> MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
> diff --git a/arch/arm/include/asm/xen/interface.h
> b/arch/arm/include/asm/xen/interface.h
> index 1151188..acf4b7a 100644
> --- a/arch/arm/include/asm/xen/interface.h
> +++ b/arch/arm/include/asm/xen/interface.h
> @@ -19,6 +19,7 @@
> __DEFINE_GUEST_HANDLE(name, struct name)
> #define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
> #define GUEST_HANDLE(name) __guest_handle_ ## name
> +#define GUEST_HANDLE_64(name) GUEST_HANDLE(name)
>
> #define set_xen_guest_handle(hnd, val) \
> do { \
> @@ -48,6 +49,7 @@ DEFINE_GUEST_HANDLE(int);
> DEFINE_GUEST_HANDLE(void);
> DEFINE_GUEST_HANDLE(uint64_t);
> DEFINE_GUEST_HANDLE(uint32_t);
> +DEFINE_GUEST_HANDLE(uint8_t);
> DEFINE_GUEST_HANDLE(xen_pfn_t);
> DEFINE_GUEST_HANDLE(xen_ulong_t);
>
> diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
> index eb0d851..675f17a 100644
> --- a/arch/arm/xen/enlighten.c
> +++ b/arch/arm/xen/enlighten.c
> @@ -350,4 +350,5 @@ EXPORT_SYMBOL_GPL(HYPERVISOR_memory_op);
> EXPORT_SYMBOL_GPL(HYPERVISOR_physdev_op);
> EXPORT_SYMBOL_GPL(HYPERVISOR_vcpu_op);
> EXPORT_SYMBOL_GPL(HYPERVISOR_tmem_op);
> +EXPORT_SYMBOL_GPL(HYPERVISOR_sysctl);
> EXPORT_SYMBOL_GPL(privcmd_call);
> diff --git a/arch/arm/xen/hypercall.S b/arch/arm/xen/hypercall.S
> index d1cf7b7..a1276df 100644
> --- a/arch/arm/xen/hypercall.S
> +++ b/arch/arm/xen/hypercall.S
> @@ -89,6 +89,7 @@ HYPERCALL2(memory_op);
> HYPERCALL2(physdev_op);
> HYPERCALL3(vcpu_op);
> HYPERCALL1(tmem_op);
> +HYPERCALL1(sysctl);
>
> ENTRY(privcmd_call)
> stmdb sp!, {r4}
> diff --git a/include/xen/interface/sysctl.h b/include/xen/interface/sysctl.h
> new file mode 100644
> index 0000000..1a8cf7a
> --- /dev/null
> +++ b/include/xen/interface/sysctl.h
> @@ -0,0 +1,646 @@
> +/******************************************************************************
> + * sysctl.h
> + *
> + * System management operations. For use by node control stack.
> + *
> + * Reused from xen: xen/include/public/sysctl.h
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> copy
> + * of this software and associated documentation files (the "Software"), to
> + * deal in the Software without restriction, including without limitation the
> + * rights to use, copy, modify, merge, publish, distribute, sublicense,
> and/or
> + * sell copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> + * DEALINGS IN THE SOFTWARE.
> + *
> + * Copyright (c) 2002-2006, K Fraser
> + * Copyright (c) 2014, GlobalLogic Inc.
> + */
> +
> +#ifndef __XEN_PUBLIC_SYSCTL_H__
> +#define __XEN_PUBLIC_SYSCTL_H__
> +
> +#include <xen/interface/xen.h>
> +
> +#define XEN_SYSCTL_INTERFACE_VERSION 0x0000000A
> +
> +/*
> + * Read console content from Xen buffer ring.
> + */
> +/* XEN_SYSCTL_readconsole */
> +struct xen_sysctl_readconsole {
> + /* IN: Non-zero -> clear after reading. */
> + uint8_t clear;
> + /* IN: Non-zero -> start index specified by @index field. */
> + uint8_t incremental;
> + uint8_t pad0, pad1;
> + /*
> + * IN: Start index for consuming from ring buffer (if @incremental);
> + * OUT: End index after consuming from ring buffer.
> + */
> + uint32_t index;
> + /* IN: Virtual address to write console data. */
> + GUEST_HANDLE_64(char) buffer;
> + /* IN: Size of buffer; OUT: Bytes written to buffer. */
> + uint32_t count;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_readconsole);
> +
> +/* Get trace buffers machine base address */
> +/* XEN_SYSCTL_tbuf_op */
> +struct xen_sysctl_tbuf_op {
> + /* IN variables */
> +#define XEN_SYSCTL_TBUFOP_get_info 0
> +#define XEN_SYSCTL_TBUFOP_set_cpu_mask 1
> +#define XEN_SYSCTL_TBUFOP_set_evt_mask 2
> +#define XEN_SYSCTL_TBUFOP_set_size 3
> +#define XEN_SYSCTL_TBUFOP_enable 4
> +#define XEN_SYSCTL_TBUFOP_disable 5
> + uint32_t cmd;
> + /* IN/OUT variables */
> + struct xenctl_bitmap cpu_mask;
> + uint32_t evt_mask;
> + /* OUT variables */
> + uint64_aligned_t buffer_mfn;
> + uint32_t size; /* Also an IN variable! */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_tbuf_op);
> +
> +/*
> + * Get physical information about the host machine
> + */
> +/* XEN_SYSCTL_physinfo */
> + /* (x86) The platform supports HVM guests. */
> +#define _XEN_SYSCTL_PHYSCAP_hvm 0
> +#define XEN_SYSCTL_PHYSCAP_hvm (1u<<_XEN_SYSCTL_PHYSCAP_hvm)
> + /* (x86) The platform supports HVM-guest direct access to I/O devices. */
> +#define _XEN_SYSCTL_PHYSCAP_hvm_directio 1
> +#define XEN_SYSCTL_PHYSCAP_hvm_directio
> (1u<<_XEN_SYSCTL_PHYSCAP_hvm_directio)
> +struct xen_sysctl_physinfo {
> + uint32_t threads_per_core;
> + uint32_t cores_per_socket;
> + uint32_t nr_cpus; /* # CPUs currently online */
> + uint32_t max_cpu_id; /* Largest possible CPU ID on this host */
> + uint32_t nr_nodes; /* # nodes currently online */
> + uint32_t max_node_id; /* Largest possible node ID on this host */
> + uint32_t cpu_khz;
> + uint64_aligned_t total_pages;
> + uint64_aligned_t free_pages;
> + uint64_aligned_t scrub_pages;
> + uint64_aligned_t outstanding_pages;
> + uint32_t hw_cap[8];
> +
> + /* XEN_SYSCTL_PHYSCAP_??? */
> + uint32_t capabilities;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_physinfo);
> +
> +/*
> + * Get the ID of the current scheduler.
> + */
> +/* XEN_SYSCTL_sched_id */
> +struct xen_sysctl_sched_id {
> + /* OUT variable */
> + uint32_t sched_id;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_sched_id);
> +
> +/* Interface for controlling Xen software performance counters. */
> +/* XEN_SYSCTL_perfc_op */
> +/* Sub-operations: */
> +#define XEN_SYSCTL_PERFCOP_reset 1 /* Reset all counters to zero. */
> +#define XEN_SYSCTL_PERFCOP_query 2 /* Get perfctr information. */
> +struct xen_sysctl_perfc_desc {
> + char name[80]; /* name of perf counter */
> + uint32_t nr_vals; /* number of values for this counter */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_perfc_desc);
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_perfc_val);
> +
> +struct xen_sysctl_perfc_op {
> + /* IN variables. */
> + uint32_t cmd; /* XEN_SYSCTL_PERFCOP_??? */
> + /* OUT variables. */
> + uint32_t nr_counters; /* number of counters description */
> + uint32_t nr_vals; /* number of values */
> + /* counter information (or NULL) */
> + GUEST_HANDLE_64(xen_sysctl_perfc_desc) desc;
> + /* counter values (or NULL) */
> + GUEST_HANDLE_64(xen_sysctl_perfc_val) val;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_perfc_op);
> +
> +/* Inject debug keys into Xen. */
> +/* XEN_SYSCTL_debug_keys */
> +struct xen_sysctl_debug_keys {
> + /* IN variables. */
> + GUEST_HANDLE_64(char) keys;
> + uint32_t nr_keys;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_debug_keys);
> +
> +/* Get physical CPU information. */
> +/* XEN_SYSCTL_getcpuinfo */
> +struct xen_sysctl_cpuinfo {
> + uint64_aligned_t idletime;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_cpuinfo);
> +struct xen_sysctl_getcpuinfo {
> + /* IN variables. */
> + uint32_t max_cpus;
> + GUEST_HANDLE_64(xen_sysctl_cpuinfo) info;
> + /* OUT variables. */
> + uint32_t nr_cpus;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_getcpuinfo);
> +
> +/* XEN_SYSCTL_availheap */
> +struct xen_sysctl_availheap {
> + /* IN variables. */
> + uint32_t min_bitwidth; /* Smallest address width (zero if don't care) */
> + uint32_t max_bitwidth; /* Largest address width (zero if don't care) */
> + int32_t node; /* NUMA node of interest (-1 for all nodes) */
> + /* OUT variables. */
> + uint64_aligned_t avail_bytes;/* Bytes available in the specified region
> */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_availheap);
> +
> +/* XEN_SYSCTL_get_pmstat */
> +struct pm_px_val {
> + uint64_aligned_t freq; /* Px core frequency */
> + uint64_aligned_t residency; /* Px residency time */
> + uint64_aligned_t count; /* Px transition count */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(pm_px_val);
> +
> +struct pm_px_stat {
> + uint8_t total; /* total Px states */
> + uint8_t usable; /* usable Px states */
> + uint8_t last; /* last Px state */
> + uint8_t cur; /* current Px state */
> + GUEST_HANDLE_64(uint64_t) trans_pt; /* Px transition table */
> + GUEST_HANDLE_64(pm_px_val) pt;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(pm_px_stat);
> +
> +struct pm_cx_stat {
> + uint32_t nr; /* entry nr in triggers & residencies, including C0 */
> + uint32_t last; /* last Cx state */
> + uint64_aligned_t idle_time; /* idle time from boot */
> + GUEST_HANDLE_64(uint64_t) triggers; /* Cx trigger counts */
> + GUEST_HANDLE_64(uint64_t) residencies; /* Cx residencies */
> + uint64_aligned_t pc2;
> + uint64_aligned_t pc3;
> + uint64_aligned_t pc6;
> + uint64_aligned_t pc7;
> + uint64_aligned_t cc3;
> + uint64_aligned_t cc6;
> + uint64_aligned_t cc7;
> +};
> +
> +struct xen_sysctl_get_pmstat {
> +#define PMSTAT_CATEGORY_MASK 0xf0
> +#define PMSTAT_PX 0x10
> +#define PMSTAT_CX 0x20
> +#define PMSTAT_get_max_px (PMSTAT_PX | 0x1)
> +#define PMSTAT_get_pxstat (PMSTAT_PX | 0x2)
> +#define PMSTAT_reset_pxstat (PMSTAT_PX | 0x3)
> +#define PMSTAT_get_max_cx (PMSTAT_CX | 0x1)
> +#define PMSTAT_get_cxstat (PMSTAT_CX | 0x2)
> +#define PMSTAT_reset_cxstat (PMSTAT_CX | 0x3)
> + uint32_t type;
> + uint32_t cpuid;
> + union {
> + struct pm_px_stat getpx;
> + struct pm_cx_stat getcx;
> + /* other struct for tx, etc */
> + } u;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_get_pmstat);
> +
> +/* XEN_SYSCTL_cpu_hotplug */
> +struct xen_sysctl_cpu_hotplug {
> + /* IN variables */
> + uint32_t cpu; /* Physical cpu. */
> +#define XEN_SYSCTL_CPU_HOTPLUG_ONLINE 0
> +#define XEN_SYSCTL_CPU_HOTPLUG_OFFLINE 1
> + uint32_t op; /* hotplug opcode */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_cpu_hotplug);
> +
> +/*
> + * Get/set xen power management, include
> + * 1. cpufreq governors and related parameters
> + */
> +/* XEN_SYSCTL_pm_op */
> +struct xen_userspace {
> + uint32_t scaling_setspeed;
> +};
> +
> +struct xen_ondemand {
> + uint32_t sampling_rate_max;
> + uint32_t sampling_rate_min;
> +
> + uint32_t sampling_rate;
> + uint32_t up_threshold;
> +};
> +
> +/*
> + * cpufreq para name of this structure named
> + * same as sysfs file name of native linux
> + */
> +#define CPUFREQ_NAME_LEN 16
> +struct xen_get_cpufreq_para {
> + /* IN/OUT variable */
> + uint32_t cpu_num;
> + uint32_t freq_num;
> + uint32_t gov_num;
> +
> + /* for all governors */
> + /* OUT variable */
> + GUEST_HANDLE_64(uint32_t) affected_cpus;
> + GUEST_HANDLE_64(uint32_t) scaling_available_frequencies;
> + GUEST_HANDLE_64(char) scaling_available_governors;
> + char scaling_driver[CPUFREQ_NAME_LEN];
> +
> + uint32_t cpuinfo_cur_freq;
> + uint32_t cpuinfo_max_freq;
> + uint32_t cpuinfo_min_freq;
> + uint32_t scaling_cur_freq;
> +
> + char scaling_governor[CPUFREQ_NAME_LEN];
> + uint32_t scaling_max_freq;
> + uint32_t scaling_min_freq;
> +
> + /* for specific governor */
> + union {
> + struct xen_userspace userspace;
> + struct xen_ondemand ondemand;
> + } u;
> +
> + int32_t turbo_enabled;
> +};
> +
> +struct xen_set_cpufreq_gov {
> + char scaling_governor[CPUFREQ_NAME_LEN];
> +};
> +
> +struct xen_set_cpufreq_para {
> + #define SCALING_MAX_FREQ 1
> + #define SCALING_MIN_FREQ 2
> + #define SCALING_SETSPEED 3
> + #define SAMPLING_RATE 4
> + #define UP_THRESHOLD 5
> +
> + uint32_t ctrl_type;
> + uint32_t ctrl_value;
> +};
> +
> +struct xen_sysctl_pm_op {
> + #define PM_PARA_CATEGORY_MASK 0xf0
> + #define CPUFREQ_PARA 0x10
> +
> + /* cpufreq command type */
> + #define GET_CPUFREQ_PARA (CPUFREQ_PARA | 0x01)
> + #define SET_CPUFREQ_GOV (CPUFREQ_PARA | 0x02)
> + #define SET_CPUFREQ_PARA (CPUFREQ_PARA | 0x03)
> + #define GET_CPUFREQ_AVGFREQ (CPUFREQ_PARA | 0x04)
> +
> + /* set/reset scheduler power saving option */
> + #define XEN_SYSCTL_pm_op_set_sched_opt_smt 0x21
> +
> + /* cpuidle max_cstate access command */
> + #define XEN_SYSCTL_pm_op_get_max_cstate 0x22
> + #define XEN_SYSCTL_pm_op_set_max_cstate 0x23
> +
> + /* set scheduler migration cost value */
> + #define XEN_SYSCTL_pm_op_set_vcpu_migration_delay 0x24
> + #define XEN_SYSCTL_pm_op_get_vcpu_migration_delay 0x25
> +
> + /* enable/disable turbo mode when in dbs governor */
> + #define XEN_SYSCTL_pm_op_enable_turbo 0x26
> + #define XEN_SYSCTL_pm_op_disable_turbo 0x27
> +
> + uint32_t cmd;
> + uint32_t cpuid;
> + union {
> + struct xen_get_cpufreq_para get_para;
> + struct xen_set_cpufreq_gov set_gov;
> + struct xen_set_cpufreq_para set_para;
> + uint64_aligned_t get_avgfreq;
> + uint32_t set_sched_opt_smt;
> + uint32_t get_max_cstate;
> + uint32_t set_max_cstate;
> + uint32_t get_vcpu_migration_delay;
> + uint32_t set_vcpu_migration_delay;
> + } u;
> +};
> +
> +/* XEN_SYSCTL_page_offline_op */
> +struct xen_sysctl_page_offline_op {
> + /* IN: range of page to be offlined */
> +#define sysctl_page_offline 1
> +#define sysctl_page_online 2
> +#define sysctl_query_page_offline 3
> + uint32_t cmd;
> + uint32_t start;
> + uint32_t end;
> + /* OUT: result of page offline request */
> + /*
> + * bit 0~15: result flags
> + * bit 16~31: owner
> + */
> + GUEST_HANDLE(uint32_t) status;
> +};
> +
> +#define PG_OFFLINE_STATUS_MASK (0xFFUL)
> +
> +/* The result is invalid, i.e. HV does not handle it */
> +#define PG_OFFLINE_INVALID (0x1UL << 0)
> +
> +#define PG_OFFLINE_OFFLINED (0x1UL << 1)
> +#define PG_OFFLINE_PENDING (0x1UL << 2)
> +#define PG_OFFLINE_FAILED (0x1UL << 3)
> +#define PG_OFFLINE_AGAIN (0x1UL << 4)
> +
> +#define PG_ONLINE_FAILED PG_OFFLINE_FAILED
> +#define PG_ONLINE_ONLINED PG_OFFLINE_OFFLINED
> +
> +#define PG_OFFLINE_STATUS_OFFLINED (0x1UL << 1)
> +#define PG_OFFLINE_STATUS_ONLINE (0x1UL << 2)
> +#define PG_OFFLINE_STATUS_OFFLINE_PENDING (0x1UL << 3)
> +#define PG_OFFLINE_STATUS_BROKEN (0x1UL << 4)
> +
> +#define PG_OFFLINE_MISC_MASK (0xFFUL << 4)
> +
> +/* valid when PG_OFFLINE_FAILED or PG_OFFLINE_PENDING */
> +#define PG_OFFLINE_XENPAGE (0x1UL << 8)
> +#define PG_OFFLINE_DOM0PAGE (0x1UL << 9)
> +#define PG_OFFLINE_ANONYMOUS (0x1UL << 10)
> +#define PG_OFFLINE_NOT_CONV_RAM (0x1UL << 11)
> +#define PG_OFFLINE_OWNED (0x1UL << 12)
> +
> +#define PG_OFFLINE_BROKEN (0x1UL << 13)
> +#define PG_ONLINE_BROKEN PG_OFFLINE_BROKEN
> +
> +#define PG_OFFLINE_OWNER_SHIFT 16
> +
> +/* XEN_SYSCTL_lockprof_op */
> +/* Sub-operations: */
> +#define XEN_SYSCTL_LOCKPROF_reset 1 /* Reset all profile data to zero. */
> +#define XEN_SYSCTL_LOCKPROF_query 2 /* Get lock profile information. */
> +/* Record-type: */
> +#define LOCKPROF_TYPE_GLOBAL 0 /* global lock, idx meaningless */
> +#define LOCKPROF_TYPE_PERDOM 1 /* per-domain lock, idx is domid */
> +#define LOCKPROF_TYPE_N 2 /* number of types */
> +struct xen_sysctl_lockprof_data {
> + char name[40]; /* lock name (may include up to 2 %d specifiers) */
> + int32_t type; /* LOCKPROF_TYPE_??? */
> + int32_t idx; /* index (e.g. domain id) */
> + uint64_aligned_t lock_cnt; /* # of locking succeeded */
> + uint64_aligned_t block_cnt; /* # of wait for lock */
> + uint64_aligned_t lock_time; /* nsecs lock held */
> + uint64_aligned_t block_time; /* nsecs waited for lock */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_lockprof_data);
> +
> +struct xen_sysctl_lockprof_op {
> + /* IN variables. */
> + uint32_t cmd; /* XEN_SYSCTL_LOCKPROF_??? */
> + uint32_t max_elem; /* size of output buffer */
> + /* OUT variables (query only). */
> + uint32_t nr_elem; /* number of elements available */
> + uint64_aligned_t time; /* nsecs of profile measurement */
> + /* profile information (or NULL) */
> + GUEST_HANDLE_64(xen_sysctl_lockprof_data) data;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_lockprof_op);
> +
> +/* XEN_SYSCTL_topologyinfo */
> +#define INVALID_TOPOLOGY_ID (~0U)
> +struct xen_sysctl_topologyinfo {
> + /*
> + * IN: maximum addressable entry in the caller-provided arrays.
> + * OUT: largest cpu identifier in the system.
> + * If OUT is greater than IN then the arrays are truncated!
> + * If OUT is leass than IN then the array tails are not written by
> + * sysctl.
> + */
> + uint32_t max_cpu_index;
> +
> + /*
> + * If not NULL, these arrays are filled with core/socket/node identifier
> + * for each cpu.
> + * If a cpu has no core/socket/node information (e.g., cpu not present)
> + * then the sentinel value ~0u is written to each array.
> + * The number of array elements written by the sysctl is:
> + * min(@max_cpu_index_IN,@max_cpu_index_OUT)+1
> + */
> + GUEST_HANDLE_64(uint32_t) cpu_to_core;
> + GUEST_HANDLE_64(uint32_t) cpu_to_socket;
> + GUEST_HANDLE_64(uint32_t) cpu_to_node;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_topologyinfo);
> +
> +/* XEN_SYSCTL_numainfo */
> +#define INVALID_NUMAINFO_ID (~0U)
> +struct xen_sysctl_numainfo {
> + /*
> + * IN: maximum addressable entry in the caller-provided arrays.
> + * OUT: largest node identifier in the system.
> + * If OUT is greater than IN then the arrays are truncated!
> + */
> + uint32_t max_node_index;
> +
> + /* NB. Entries are 0 if node is not present. */
> + GUEST_HANDLE_64(uint64_t) node_to_memsize;
> + GUEST_HANDLE_64(uint64_t) node_to_memfree;
> +
> + /*
> + * Array, of size (max_node_index+1)^2, listing memory access distances
> + * between nodes. If an entry has no node distance information (e.g.,
> node
> + * not present) then the value ~0u is written.
> + *
> + * Note that the array rows must be indexed by multiplying by the
> minimum
> + * of the caller-provided max_node_index and the returned value of
> + * max_node_index. That is, if the largest node index in the system is
> + * smaller than the caller can handle, a smaller 2-d array is
> constructed
> + * within the space provided by the caller. When this occurs, trailing
> + * space provided by the caller is not modified. If the largest node
> index
> + * in the system is larger than the caller can handle, then a 2-d array
> of
> + * the maximum size handleable by the caller is constructed.
> + */
> + GUEST_HANDLE_64(uint32_t) node_to_node_distance;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_numainfo);
> +
> +/* XEN_SYSCTL_cpupool_op */
> +#define XEN_SYSCTL_CPUPOOL_OP_CREATE 1 /* C */
> +#define XEN_SYSCTL_CPUPOOL_OP_DESTROY 2 /* D */
> +#define XEN_SYSCTL_CPUPOOL_OP_INFO 3 /* I */
> +#define XEN_SYSCTL_CPUPOOL_OP_ADDCPU 4 /* A */
> +#define XEN_SYSCTL_CPUPOOL_OP_RMCPU 5 /* R */
> +#define XEN_SYSCTL_CPUPOOL_OP_MOVEDOMAIN 6 /* M */
> +#define XEN_SYSCTL_CPUPOOL_OP_FREEINFO 7 /* F */
> +#define XEN_SYSCTL_CPUPOOL_PAR_ANY 0xFFFFFFFF
> +struct xen_sysctl_cpupool_op {
> + uint32_t op; /* IN */
> + uint32_t cpupool_id; /* IN: CDIARM OUT: CI */
> + uint32_t sched_id; /* IN: C OUT: I */
> + uint32_t domid; /* IN: M */
> + uint32_t cpu; /* IN: AR */
> + uint32_t n_dom; /* OUT: I */
> + struct xenctl_bitmap cpumap; /* OUT: IF */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_cpupool_op);
> +
> +#define ARINC653_MAX_DOMAINS_PER_SCHEDULE 64
> +/*
> + * This structure is used to pass a new ARINC653 schedule from a
> + * privileged domain (ie dom0) to Xen.
> + */
> +struct xen_sysctl_arinc653_schedule {
> + /* major_frame holds the time for the new schedule's major frame
> + * in nanoseconds. */
> + uint64_aligned_t major_frame;
> + /* num_sched_entries holds how many of the entries in the
> + * sched_entries[] array are valid. */
> + uint8_t num_sched_entries;
> + /* The sched_entries array holds the actual schedule entries. */
> + struct {
> + /* dom_handle must match a domain's UUID */
> + xen_domain_handle_t dom_handle;
> + /*
> + * If a domain has multiple VCPUs, vcpu_id specifies which one
> + * this schedule entry applies to. It should be set to 0 if
> + * there is only one VCPU for the domain. */
> + unsigned int vcpu_id;
> + /*
> + * runtime specifies the amount of time that should be allocated
> + * to this VCPU per major frame. It is specified in nanoseconds
> + */
> + uint64_aligned_t runtime;
> + } sched_entries[ARINC653_MAX_DOMAINS_PER_SCHEDULE];
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_arinc653_schedule);
> +
> +struct xen_sysctl_credit_schedule {
> + /* Length of timeslice in milliseconds */
> +#define XEN_SYSCTL_CSCHED_TSLICE_MAX 1000
> +#define XEN_SYSCTL_CSCHED_TSLICE_MIN 1
> + unsigned tslice_ms;
> + /* Rate limit (minimum timeslice) in microseconds */
> +#define XEN_SYSCTL_SCHED_RATELIMIT_MAX 500000
> +#define XEN_SYSCTL_SCHED_RATELIMIT_MIN 100
> + unsigned ratelimit_us;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_credit_schedule);
> +
> +/* XEN_SYSCTL_scheduler_op */
> +/* Set or get info? */
> +#define XEN_SYSCTL_SCHEDOP_putinfo 0
> +#define XEN_SYSCTL_SCHEDOP_getinfo 1
> +struct xen_sysctl_scheduler_op {
> + uint32_t cpupool_id; /* Cpupool whose scheduler is to be targetted. */
> + uint32_t sched_id; /* XEN_SCHEDULER_* (domctl.h) */
> + uint32_t cmd; /* XEN_SYSCTL_SCHEDOP_* */
> + union {
> + struct xen_sysctl_sched_arinc653 {
> + GUEST_HANDLE_64(xen_sysctl_arinc653_schedule) schedule;
> + } sched_arinc653;
> + struct xen_sysctl_credit_schedule sched_credit;
> + } u;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_scheduler_op);
> +
> +/* XEN_SYSCTL_coverage_op */
> +/*
> + * Get total size of information, to help allocate
> + * the buffer. The pointer points to a 32 bit value.
> + */
> +#define XEN_SYSCTL_COVERAGE_get_total_size 0
> +
> +/*
> + * Read coverage information in a single run
> + * You must use a tool to split them.
> + */
> +#define XEN_SYSCTL_COVERAGE_read 1
> +
> +/*
> + * Reset all the coverage counters to 0
> + * No parameters.
> + */
> +#define XEN_SYSCTL_COVERAGE_reset 2
> +
> +/*
> + * Like XEN_SYSCTL_COVERAGE_read but reset also
> + * counters to 0 in a single call.
> + */
> +#define XEN_SYSCTL_COVERAGE_read_and_reset 3
> +
> +struct xen_sysctl_coverage_op {
> + uint32_t cmd; /* XEN_SYSCTL_COVERAGE_* */
> + union {
> + uint32_t total_size; /* OUT */
> + GUEST_HANDLE_64(uint8_t) raw_info; /* OUT */
> + } u;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl_coverage_op);
> +
> +
> +struct xen_sysctl {
> + uint32_t cmd;
> +#define XEN_SYSCTL_readconsole 1
> +#define XEN_SYSCTL_tbuf_op 2
> +#define XEN_SYSCTL_physinfo 3
> +#define XEN_SYSCTL_sched_id 4
> +#define XEN_SYSCTL_perfc_op 5
> +#define XEN_SYSCTL_debug_keys 7
> +#define XEN_SYSCTL_getcpuinfo 8
> +#define XEN_SYSCTL_availheap 9
> +#define XEN_SYSCTL_get_pmstat 10
> +#define XEN_SYSCTL_cpu_hotplug 11
> +#define XEN_SYSCTL_pm_op 12
> +#define XEN_SYSCTL_page_offline_op 14
> +#define XEN_SYSCTL_lockprof_op 15
> +#define XEN_SYSCTL_topologyinfo 16
> +#define XEN_SYSCTL_numainfo 17
> +#define XEN_SYSCTL_cpupool_op 18
> +#define XEN_SYSCTL_scheduler_op 19
> +#define XEN_SYSCTL_coverage_op 20
> + uint32_t interface_version; /* XEN_SYSCTL_INTERFACE_VERSION */
> + union {
> + struct xen_sysctl_readconsole readconsole;
> + struct xen_sysctl_tbuf_op tbuf_op;
> + struct xen_sysctl_physinfo physinfo;
> + struct xen_sysctl_topologyinfo topologyinfo;
> + struct xen_sysctl_numainfo numainfo;
> + struct xen_sysctl_sched_id sched_id;
> + struct xen_sysctl_perfc_op perfc_op;
> + struct xen_sysctl_debug_keys debug_keys;
> + struct xen_sysctl_getcpuinfo getcpuinfo;
> + struct xen_sysctl_availheap availheap;
> + struct xen_sysctl_get_pmstat get_pmstat;
> + struct xen_sysctl_cpu_hotplug cpu_hotplug;
> + struct xen_sysctl_pm_op pm_op;
> + struct xen_sysctl_page_offline_op page_offline;
> + struct xen_sysctl_lockprof_op lockprof_op;
> + struct xen_sysctl_cpupool_op cpupool_op;
> + struct xen_sysctl_scheduler_op scheduler_op;
> + struct xen_sysctl_coverage_op coverage_op;
> + uint8_t pad[128];
> + } u;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_sysctl);
> +
> +#endif /* __XEN_PUBLIC_SYSCTL_H__ */
We usually only introduce what we need from Xen header files in Linux:
do not copy the entirety of sysctl.h, just introduce what you need.
> diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
> index 53ec416..cf64566 100644
> --- a/include/xen/interface/xen.h
> +++ b/include/xen/interface/xen.h
> @@ -57,6 +57,7 @@
> #define __HYPERVISOR_event_channel_op 32
> #define __HYPERVISOR_physdev_op 33
> #define __HYPERVISOR_hvm_op 34
> +#define __HYPERVISOR_sysctl 35
> #define __HYPERVISOR_tmem_op 38
>
> /* Architecture-specific hypercall definitions. */
> @@ -526,6 +527,11 @@ struct tmem_op {
>
> DEFINE_GUEST_HANDLE(u64);
>
> +struct xenctl_bitmap {
> + GUEST_HANDLE_64(uint8_t) bitmap;
> + uint32_t nr_bits;
> +};
> +
> #else /* __ASSEMBLY__ */
>
> /* In assembly code we cannot use C numeric constant suffixes. */
> --
> 1.9.1
>
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