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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 Thu, Nov 6, 2014 at 5:16 PM, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx> wrote:
> On Thu, 6 Nov 2014, Oleksandr Dmytryshyn wrote:
>> On Tue, Nov 4, 2014 at 6:17 PM, Stefano Stabellini
>> <stefano.stabellini@xxxxxxxxxxxxx> wrote:
>> > On Tue, 4 Nov 2014, Oleksandr Dmytryshyn wrote:
>> >> Signed-off-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx>
>> >
>> > Why?
>> I'll add authors Signed-off-by before my Signed-off-by in the next patch-set.
>
> Sorry, I meant why are you introducing HYPERVISOR_sysctl?
I use it to get real physical CPUs counter.
Also I'll implement a new sysctl operation: XEN_SYSCTL_cpufreq_op
Kernel will use this op to start/stop cpufreq notification
events sending.
>> >> 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.
>> I'll do this in the next patch-set.
>>
>> >> 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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