164 lines
4.5 KiB
C
164 lines
4.5 KiB
C
/*-
|
|
* Copyright (c) 2003-2009 RMI Corporation
|
|
* 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.
|
|
* 3. Neither the name of RMI Corporation, nor the names of its contributors,
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*
|
|
* RMI_BSD */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/pcpu.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/smp.h>
|
|
#include <sys/sysctl.h>
|
|
#include <machine/smp.h>
|
|
#include <mips/rmi/perfmon.h>
|
|
#include <mips/rmi/pic.h>
|
|
#include <sys/mutex.h>
|
|
#include <mips/rmi/clock.h>
|
|
|
|
|
|
int xlr_perfmon_started = 0;
|
|
struct perf_area *xlr_shared_config_area = NULL;
|
|
uint32_t *xlr_perfmon_timer_loc;
|
|
uint32_t *xlr_cpu_sampling_interval;
|
|
uint32_t xlr_perfmon_kernel_version = 1; /* Future use */
|
|
uint32_t xlr_perfmon_ticks;
|
|
extern int mips_cpu_online_mask;
|
|
extern uint32_t cpu_ltop_map[MAXCPU];
|
|
|
|
#ifdef SMP
|
|
static __inline__ void
|
|
pic_send_perfmon_ipi(int cpu)
|
|
{
|
|
xlr_reg_t *mmio = xlr_io_mmio(XLR_IO_PIC_OFFSET);
|
|
int tid, pid;
|
|
uint32_t ipi;
|
|
|
|
tid = cpu & 0x3;
|
|
pid = (cpu >> 2) & 0x7;
|
|
ipi = (pid << 20) | (tid << 16) | IPI_PERFMON;
|
|
|
|
mtx_lock_spin(&xlr_pic_lock);
|
|
xlr_write_reg(mmio, PIC_IPI, ipi);
|
|
mtx_unlock_spin(&xlr_pic_lock);
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
void
|
|
xlr_perfmon_clockhandler(void)
|
|
{
|
|
#ifdef SMP
|
|
int cpu;
|
|
int i;
|
|
|
|
#endif
|
|
|
|
if (xlr_perfmon_ticks++ >= (*xlr_cpu_sampling_interval) / (XLR_PIC_HZ / (hz * 1024))) {
|
|
|
|
/* update timer */
|
|
*xlr_perfmon_timer_loc += *xlr_cpu_sampling_interval;
|
|
xlr_perfmon_ticks = 0;
|
|
xlr_perfmon_sampler(NULL);
|
|
#ifdef SMP
|
|
for (i = 0; i < NCPUS; i = i + NTHREADS) { /* oly thread 0 */
|
|
cpu = cpu_ltop_map[i];
|
|
if ((mips_cpu_online_mask & (1 << i)) &&
|
|
xlr_shared_config_area[cpu / NTHREADS].perf_config.magic ==
|
|
PERFMON_ACTIVE_MAGIC)
|
|
pic_send_perfmon_ipi(cpu);
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
static void
|
|
xlr_perfmon_start(void)
|
|
{
|
|
size_t size;
|
|
|
|
size = (NCORES * sizeof(*xlr_shared_config_area)) +
|
|
sizeof(*xlr_perfmon_timer_loc) +
|
|
sizeof(*xlr_cpu_sampling_interval);
|
|
|
|
xlr_shared_config_area = malloc(size, M_TEMP, M_WAITOK);
|
|
if (!xlr_shared_config_area) {
|
|
/* ERROR */
|
|
return;
|
|
}
|
|
xlr_perfmon_timer_loc = (uint32_t *) (xlr_shared_config_area + NCORES);
|
|
xlr_cpu_sampling_interval = (uint32_t *) (xlr_perfmon_timer_loc + 1);
|
|
|
|
*xlr_cpu_sampling_interval = DEFAULT_CPU_SAMPLING_INTERVAL;
|
|
*xlr_perfmon_timer_loc = 0;
|
|
xlr_perfmon_ticks = 0;
|
|
|
|
xlr_perfmon_init_cpu(NULL);
|
|
#ifdef SMP
|
|
smp_call_function(xlr_perfmon_init_cpu, NULL,
|
|
PCPU_GET(other_cpus) & 0x11111111);
|
|
#endif
|
|
xlr_perfmon_started = 1;
|
|
|
|
}
|
|
|
|
static void
|
|
xlr_perfmon_stop(void)
|
|
{
|
|
xlr_perfmon_started = 0;
|
|
free(xlr_shared_config_area, M_TEMP);
|
|
xlr_shared_config_area = NULL;
|
|
}
|
|
|
|
static int
|
|
sysctl_xlr_perfmon_start_stop(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
int error, val = xlr_perfmon_started;
|
|
|
|
error = sysctl_handle_int(oidp, &val, 0, req);
|
|
if (error != 0 || req->newptr == NULL)
|
|
return (error);
|
|
|
|
if (!xlr_perfmon_started && val != 0)
|
|
xlr_perfmon_start();
|
|
else if (xlr_perfmon_started && val == 0)
|
|
xlr_perfmon_stop();
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
SYSCTL_NODE(_debug, OID_AUTO, xlrperf, CTLFLAG_RW, NULL, "XLR PERF Nodes");
|
|
SYSCTL_PROC(_debug_xlrperf, OID_AUTO, start, CTLTYPE_INT | CTLFLAG_RW,
|
|
&xlr_perfmon_started, 0, sysctl_xlr_perfmon_start_stop, "I", "set/unset to start/stop "
|
|
"performance monitoring");
|