c5153e190b
Have pmcstat(8) and pmccontrol(8) use these APIs. Return PMC class-related constants (PMC widths and capabilities) with the OP GETCPUINFO call leaving OP PMCINFO to return only the dynamic information associated with a PMC (i.e., whether enabled, owner pid, reload count etc.). Allow pmc_read() (i.e., OPS PMCRW) on active self-attached PMCs to get upto-date values from hardware since we can guarantee that the hardware is running the correct PMC at the time of the call. Bug fixes: - (x86 class processors) Fix a bug that prevented an RDPMC instruction from being recognized as permitted till after the attached process had context switched out and back in again after a pmc_start() call. Tighten the rules for using RDPMC class instructions: a GETMSR OP is now allowed only after an OP ATTACH has been done by the PMC's owner to itself. OP GETMSR is not allowed for PMCs that track descendants, for PMCs attached to processes other than their owner processes. - (P4/HTT processors only) Fix a bug that caused the MI and MD layers to get out of sync. Add a new MD operation 'get_config()' as part of this fix. - Allow multiple system-mode PMCs at the same row-index but on different CPUs to be allocated. - Reject allocation of an administratively disabled PMC. Misc. code cleanups and refactoring. Improve a few comments.
82 lines
3.0 KiB
C
82 lines
3.0 KiB
C
/*-
|
|
* Copyright (c) 2003,2004 Joseph Koshy
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _PMC_H_
|
|
#define _PMC_H_
|
|
|
|
#include <sys/pmc.h>
|
|
|
|
/*
|
|
* Prototypes
|
|
*/
|
|
|
|
int pmc_allocate(const char *_ctrspec, enum pmc_mode _mode, uint32_t _flags,
|
|
int _cpu, pmc_id_t *_pmcid);
|
|
int pmc_attach(pmc_id_t _pmcid, pid_t _pid);
|
|
int pmc_capabilities(pmc_id_t _pmc, uint32_t *_caps);
|
|
int pmc_configure_logfile(int _fd);
|
|
int pmc_detach(pmc_id_t _pmcid, pid_t _pid);
|
|
int pmc_disable(int _cpu, int _pmc);
|
|
int pmc_enable(int _cpu, int _pmc);
|
|
int pmc_get_driver_stats(struct pmc_op_getdriverstats *_gms);
|
|
int pmc_init(void);
|
|
int pmc_read(pmc_id_t _pmc, pmc_value_t *_value);
|
|
int pmc_release(pmc_id_t _pmc);
|
|
int pmc_rw(pmc_id_t _pmc, pmc_value_t _newvalue, pmc_value_t *_oldvalue);
|
|
int pmc_set(pmc_id_t _pmc, pmc_value_t _value);
|
|
int pmc_start(pmc_id_t _pmc);
|
|
int pmc_stop(pmc_id_t _pmc);
|
|
int pmc_width(pmc_id_t _pmc, uint32_t *_width);
|
|
int pmc_write(pmc_id_t _pmc, pmc_value_t _value);
|
|
|
|
int pmc_ncpu(void);
|
|
int pmc_npmc(int _cpu);
|
|
int pmc_cpuinfo(const struct pmc_op_getcpuinfo **_cpu_info);
|
|
int pmc_pmcinfo(int _cpu, struct pmc_op_getpmcinfo **_pmc_info);
|
|
|
|
const char *pmc_name_of_capability(uint32_t _c);
|
|
const char *pmc_name_of_class(enum pmc_class _pc);
|
|
const char *pmc_name_of_cputype(enum pmc_cputype _cp);
|
|
const char *pmc_name_of_disposition(enum pmc_disp _pd);
|
|
const char *pmc_name_of_event(enum pmc_event _pe);
|
|
const char *pmc_name_of_mode(enum pmc_mode _pm);
|
|
const char *pmc_name_of_state(enum pmc_state _ps);
|
|
|
|
int pmc_event_names_of_class(enum pmc_class _cl, const char ***_eventnames,
|
|
int *_nevents);
|
|
|
|
/*
|
|
* Architecture specific extensions
|
|
*/
|
|
|
|
#if __i386__ || __amd64__
|
|
int pmc_x86_get_msr(pmc_id_t _pmc, uint32_t *_msr);
|
|
#endif
|
|
|
|
#endif
|