ref: 64d062acdb9ed71cc251c69a08ee03e6c5bfcaaf
dir: /sys/src/9/xen/xen-public/xenoprof.h/
/******************************************************************************
* xenoprof.h
*
* Interface for enabling system wide profiling based on hardware performance
* counters
*
* 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) 2005 Hewlett-Packard Co.
* Written by Aravind Menon & Jose Renato Santos
*/
#ifndef __XEN_PUBLIC_XENOPROF_H__
#define __XEN_PUBLIC_XENOPROF_H__
#include "xen.h"
/*
* Commands to HYPERVISOR_xenoprof_op().
*/
#define XENOPROF_init 0
#define XENOPROF_reset_active_list 1
#define XENOPROF_reset_passive_list 2
#define XENOPROF_set_active 3
#define XENOPROF_set_passive 4
#define XENOPROF_reserve_counters 5
#define XENOPROF_counter 6
#define XENOPROF_setup_events 7
#define XENOPROF_enable_virq 8
#define XENOPROF_start 9
#define XENOPROF_stop 10
#define XENOPROF_disable_virq 11
#define XENOPROF_release_counters 12
#define XENOPROF_shutdown 13
#define XENOPROF_get_buffer 14
#define XENOPROF_set_backtrace 15
/* AMD IBS support */
#define XENOPROF_get_ibs_caps 16
#define XENOPROF_ibs_counter 17
#define XENOPROF_last_op 17
#define MAX_OPROF_EVENTS 32
#define MAX_OPROF_DOMAINS 25
#define XENOPROF_CPU_TYPE_SIZE 64
/* Xenoprof performance events (not Xen events) */
struct event_log {
uint64_t eip;
uint8_t mode;
uint8_t event;
};
/* PC value that indicates a special code */
#define XENOPROF_ESCAPE_CODE (~0ULL)
/* Transient events for the xenoprof->oprofile cpu buf */
#define XENOPROF_TRACE_BEGIN 1
/* Xenoprof buffer shared between Xen and domain - 1 per VCPU */
struct xenoprof_buf {
uint32_t event_head;
uint32_t event_tail;
uint32_t event_size;
uint32_t vcpu_id;
uint64_t xen_samples;
uint64_t kernel_samples;
uint64_t user_samples;
uint64_t lost_samples;
struct event_log event_log[1];
};
#ifndef __XEN__
typedef struct xenoprof_buf xenoprof_buf_t;
DEFINE_XEN_GUEST_HANDLE(xenoprof_buf_t);
#endif
struct xenoprof_init {
int32_t num_events;
int32_t is_primary;
char cpu_type[XENOPROF_CPU_TYPE_SIZE];
};
typedef struct xenoprof_init xenoprof_init_t;
DEFINE_XEN_GUEST_HANDLE(xenoprof_init_t);
struct xenoprof_get_buffer {
int32_t max_samples;
int32_t nbuf;
int32_t bufsize;
uint64_t buf_gmaddr;
};
typedef struct xenoprof_get_buffer xenoprof_get_buffer_t;
DEFINE_XEN_GUEST_HANDLE(xenoprof_get_buffer_t);
struct xenoprof_counter {
uint32_t ind;
uint64_t count;
uint32_t enabled;
uint32_t event;
uint32_t hypervisor;
uint32_t kernel;
uint32_t user;
uint64_t unit_mask;
};
typedef struct xenoprof_counter xenoprof_counter_t;
DEFINE_XEN_GUEST_HANDLE(xenoprof_counter_t);
typedef struct xenoprof_passive {
uint16_t domain_id;
int32_t max_samples;
int32_t nbuf;
int32_t bufsize;
uint64_t buf_gmaddr;
} xenoprof_passive_t;
DEFINE_XEN_GUEST_HANDLE(xenoprof_passive_t);
struct xenoprof_ibs_counter {
uint64_t op_enabled;
uint64_t fetch_enabled;
uint64_t max_cnt_fetch;
uint64_t max_cnt_op;
uint64_t rand_en;
uint64_t dispatched_ops;
};
typedef struct xenoprof_ibs_counter xenoprof_ibs_counter_t;
DEFINE_XEN_GUEST_HANDLE(xenoprof_ibs_counter_t);
#endif /* __XEN_PUBLIC_XENOPROF_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/