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MIPS + TCG Continuous Benchmarking queue for June 27th, 2020

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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-gsoc-queue-jun-27-2020' into staging

MIPS + TCG Continuous Benchmarking queue for June 27th, 2020

# gpg: Signature made Sat 27 Jun 2020 20:30:48 BST
# gpg:                using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.com>" [full]
# Primary key fingerprint: 8526 FBF1 5DA3 811F 4A01  DD75 D497 2A89 67F7 5A65

* remotes/amarkovic/tags/mips-gsoc-queue-jun-27-2020:
  MAINTAINERS: Add 'Performance Tools and Tests' subsection
  scripts/performance: Add topN_callgrind.py script
  scripts/performance: Add topN_perf.py script
  MAINTAINERS: Add Loongson-3 maintainer and reviewer
  hw/intc: Add Loongson LIOINTC support
  hw/mips: Implement the kvm_type() hook in MachineClass

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2020-06-27 22:57:36 +01:00
commit e7651153a8
8 changed files with 585 additions and 0 deletions
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13
MAINTAINERS
View File

@ -1096,6 +1096,12 @@ F: hw/isa/vt82c686.c
F: hw/pci-host/bonito.c
F: include/hw/isa/vt82c686.h
Loongson-3 virtual platforms
M: Huacai Chen <chenhc@lemote.com>
R: Jiaxun Yang <jiaxun.yang@flygoat.com>
S: Maintained
F: hw/intc/loongson_liointc.c
Boston
M: Paul Burton <pburton@wavecomp.com>
R: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>
@ -3019,3 +3025,10 @@ M: Peter Maydell <peter.maydell@linaro.org>
S: Maintained
F: docs/conf.py
F: docs/*/conf.py
Miscellaneous
-------------
Performance Tools and Tests
M: Ahmed Karaman <ahmedkhaledkaraman@gmail.com>
S: Maintained
F: scripts/performance/

3
hw/intc/Kconfig
View File

@ -64,3 +64,6 @@ config OMPIC
config RX_ICU
bool
config LOONGSON_LIOINTC
bool

1
hw/intc/Makefile.objs
View File

@ -51,3 +51,4 @@ obj-$(CONFIG_MIPS_CPS) += mips_gic.o
obj-$(CONFIG_NIOS2) += nios2_iic.o
obj-$(CONFIG_OMPIC) += ompic.o
obj-$(CONFIG_IBEX) += ibex_plic.o
obj-$(CONFIG_LOONGSON_LIOINTC) += loongson_liointc.o

242
hw/intc/loongson_liointc.c Normal file
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@ -0,0 +1,242 @@
/*
* QEMU Loongson Local I/O interrupt controler.
*
* Copyright (c) 2020 Jiaxun Yang <jiaxun.yang@flygoat.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "hw/sysbus.h"
#include "qemu/module.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#define D(x)
#define NUM_IRQS 32
#define NUM_CORES 4
#define NUM_IPS 4
#define NUM_PARENTS (NUM_CORES * NUM_IPS)
#define PARENT_COREx_IPy(x, y) (NUM_IPS * x + y)
#define R_MAPPER_START 0x0
#define R_MAPPER_END 0x20
#define R_ISR R_MAPPER_END
#define R_IEN 0x24
#define R_IEN_SET 0x28
#define R_IEN_CLR 0x2c
#define R_PERCORE_ISR(x) (0x40 + 0x8 * x)
#define R_END 0x64
#define TYPE_LOONGSON_LIOINTC "loongson.liointc"
#define LOONGSON_LIOINTC(obj) \
OBJECT_CHECK(struct loongson_liointc, (obj), TYPE_LOONGSON_LIOINTC)
struct loongson_liointc {
SysBusDevice parent_obj;
MemoryRegion mmio;
qemu_irq parent_irq[NUM_PARENTS];
uint8_t mapper[NUM_IRQS]; /* 0:3 for core, 4:7 for IP */
uint32_t isr;
uint32_t ien;
uint32_t per_core_isr[NUM_CORES];
/* state of the interrupt input pins */
uint32_t pin_state;
bool parent_state[NUM_PARENTS];
};
static void update_irq(struct loongson_liointc *p)
{
uint32_t irq, core, ip;
uint32_t per_ip_isr[NUM_IPS] = {0};
/* level triggered interrupt */
p->isr = p->pin_state;
/* Clear disabled IRQs */
p->isr &= p->ien;
/* Clear per_core_isr */
for (core = 0; core < NUM_CORES; core++) {
p->per_core_isr[core] = 0;
}
/* Update per_core_isr and per_ip_isr */
for (irq = 0; irq < NUM_IRQS; irq++) {
if (!(p->isr & (1 << irq))) {
continue;
}
for (core = 0; core < NUM_CORES; core++) {
if ((p->mapper[irq] & (1 << core))) {
p->per_core_isr[core] |= (1 << irq);
}
}
for (ip = 0; ip < NUM_IPS; ip++) {
if ((p->mapper[irq] & (1 << (ip + 4)))) {
per_ip_isr[ip] |= (1 << irq);
}
}
}
/* Emit IRQ to parent! */
for (core = 0; core < NUM_CORES; core++) {
for (ip = 0; ip < NUM_IPS; ip++) {
int parent = PARENT_COREx_IPy(core, ip);
if (p->parent_state[parent] !=
(!!p->per_core_isr[core] && !!per_ip_isr[ip])) {
p->parent_state[parent] = !p->parent_state[parent];
qemu_set_irq(p->parent_irq[parent], p->parent_state[parent]);
}
}
}
}
static uint64_t
liointc_read(void *opaque, hwaddr addr, unsigned int size)
{
struct loongson_liointc *p = opaque;
uint32_t r = 0;
/* Mapper is 1 byte */
if (size == 1 && addr < R_MAPPER_END) {
r = p->mapper[addr];
goto out;
}
/* Rest is 4 byte */
if (size != 4 || (addr % 4)) {
goto out;
}
if (addr >= R_PERCORE_ISR(0) &&
addr < R_PERCORE_ISR(NUM_CORES)) {
int core = (addr - R_PERCORE_ISR(0)) / 4;
r = p->per_core_isr[core];
goto out;
}
switch (addr) {
case R_ISR:
r = p->isr;
break;
case R_IEN:
r = p->ien;
break;
default:
break;
}
out:
D(qemu_log("%s: size=%d addr=%lx val=%x\n", __func__, size, addr, r));
return r;
}
static void
liointc_write(void *opaque, hwaddr addr,
uint64_t val64, unsigned int size)
{
struct loongson_liointc *p = opaque;
uint32_t value = val64;
D(qemu_log("%s: size=%d, addr=%lx val=%x\n", __func__, size, addr, value));
/* Mapper is 1 byte */
if (size == 1 && addr < R_MAPPER_END) {
p->mapper[addr] = value;
goto out;
}
/* Rest is 4 byte */
if (size != 4 || (addr % 4)) {
goto out;
}
if (addr >= R_PERCORE_ISR(0) &&
addr < R_PERCORE_ISR(NUM_CORES)) {
int core = (addr - R_PERCORE_ISR(0)) / 4;
p->per_core_isr[core] = value;
goto out;
}
switch (addr) {
case R_IEN_SET:
p->ien |= value;
break;
case R_IEN_CLR:
p->ien &= ~value;
break;
default:
break;
}
out:
update_irq(p);
}
static const MemoryRegionOps pic_ops = {
.read = liointc_read,
.write = liointc_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.min_access_size = 1,
.max_access_size = 4
}
};
static void irq_handler(void *opaque, int irq, int level)
{
struct loongson_liointc *p = opaque;
p->pin_state &= ~(1 << irq);
p->pin_state |= level << irq;
update_irq(p);
}
static void loongson_liointc_init(Object *obj)
{
struct loongson_liointc *p = LOONGSON_LIOINTC(obj);
int i;
qdev_init_gpio_in(DEVICE(obj), irq_handler, 32);
for (i = 0; i < NUM_PARENTS; i++) {
sysbus_init_irq(SYS_BUS_DEVICE(obj), &p->parent_irq[i]);
}
memory_region_init_io(&p->mmio, obj, &pic_ops, p,
"loongson.liointc", R_END);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &p->mmio);
}
static const TypeInfo loongson_liointc_info = {
.name = TYPE_LOONGSON_LIOINTC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(struct loongson_liointc),
.instance_init = loongson_liointc_init,
};
static void loongson_liointc_register_types(void)
{
type_register_static(&loongson_liointc_info);
}
type_init(loongson_liointc_register_types)

140
scripts/performance/topN_callgrind.py Executable file
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@ -0,0 +1,140 @@
#!/usr/bin/env python3
# Print the top N most executed functions in QEMU using callgrind.
# Syntax:
# topN_callgrind.py [-h] [-n] <number of displayed top functions> -- \
# <qemu executable> [<qemu executable options>] \
# <target executable> [<target execurable options>]
#
# [-h] - Print the script arguments help message.
# [-n] - Specify the number of top functions to print.
# - If this flag is not specified, the tool defaults to 25.
#
# Example of usage:
# topN_callgrind.py -n 20 -- qemu-arm coulomb_double-arm
#
# This file is a part of the project "TCG Continuous Benchmarking".
#
# Copyright (C) 2020 Ahmed Karaman <ahmedkhaledkaraman@gmail.com>
# Copyright (C) 2020 Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import argparse
import os
import subprocess
import sys
# Parse the command line arguments
parser = argparse.ArgumentParser(
usage='topN_callgrind.py [-h] [-n] <number of displayed top functions> -- '
'<qemu executable> [<qemu executable options>] '
'<target executable> [<target executable options>]')
parser.add_argument('-n', dest='top', type=int, default=25,
help='Specify the number of top functions to print.')
parser.add_argument('command', type=str, nargs='+', help=argparse.SUPPRESS)
args = parser.parse_args()
# Extract the needed variables from the args
command = args.command
top = args.top
# Insure that valgrind is installed
check_valgrind_presence = subprocess.run(["which", "valgrind"],
stdout=subprocess.DEVNULL)
if check_valgrind_presence.returncode:
sys.exit("Please install valgrind before running the script!")
# Run callgrind
callgrind = subprocess.run((
["valgrind", "--tool=callgrind", "--callgrind-out-file=/tmp/callgrind.data"]
+ command),
stdout=subprocess.DEVNULL,
stderr=subprocess.PIPE)
if callgrind.returncode:
sys.exit(callgrind.stderr.decode("utf-8"))
# Save callgrind_annotate output to /tmp/callgrind_annotate.out
with open("/tmp/callgrind_annotate.out", "w") as output:
callgrind_annotate = subprocess.run(["callgrind_annotate",
"/tmp/callgrind.data"],
stdout=output,
stderr=subprocess.PIPE)
if callgrind_annotate.returncode:
os.unlink('/tmp/callgrind.data')
output.close()
os.unlink('/tmp/callgrind_annotate.out')
sys.exit(callgrind_annotate.stderr.decode("utf-8"))
# Read the callgrind_annotate output to callgrind_data[]
callgrind_data = []
with open('/tmp/callgrind_annotate.out', 'r') as data:
callgrind_data = data.readlines()
# Line number with the total number of instructions
total_instructions_line_number = 20
# Get the total number of instructions
total_instructions_line_data = callgrind_data[total_instructions_line_number]
total_number_of_instructions = total_instructions_line_data.split(' ')[0]
total_number_of_instructions = int(
total_number_of_instructions.replace(',', ''))
# Line number with the top function
first_func_line = 25
# Number of functions recorded by callgrind, last two lines are always empty
number_of_functions = len(callgrind_data) - first_func_line - 2
# Limit the number of top functions to "top"
number_of_top_functions = (top if number_of_functions >
top else number_of_functions)
# Store the data of the top functions in top_functions[]
top_functions = callgrind_data[first_func_line:
first_func_line + number_of_top_functions]
# Print table header
print('{:>4} {:>10} {:<30} {}\n{} {} {} {}'.format('No.',
'Percentage',
'Function Name',
'Source File',
'-' * 4,
'-' * 10,
'-' * 30,
'-' * 30,
))
# Print top N functions
for (index, function) in enumerate(top_functions, start=1):
function_data = function.split()
# Calculate function percentage
function_instructions = float(function_data[0].replace(',', ''))
function_percentage = (function_instructions /
total_number_of_instructions)*100
# Get function name and source files path
function_source_file, function_name = function_data[1].split(':')
# Print extracted data
print('{:>4} {:>9.3f}% {:<30} {}'.format(index,
round(function_percentage, 3),
function_name,
function_source_file))
# Remove intermediate files
os.unlink('/tmp/callgrind.data')
os.unlink('/tmp/callgrind_annotate.out')

149
scripts/performance/topN_perf.py Executable file
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@ -0,0 +1,149 @@
#!/usr/bin/env python3
# Print the top N most executed functions in QEMU using perf.
# Syntax:
# topN_perf.py [-h] [-n] <number of displayed top functions> -- \
# <qemu executable> [<qemu executable options>] \
# <target executable> [<target execurable options>]
#
# [-h] - Print the script arguments help message.
# [-n] - Specify the number of top functions to print.
# - If this flag is not specified, the tool defaults to 25.
#
# Example of usage:
# topN_perf.py -n 20 -- qemu-arm coulomb_double-arm
#
# This file is a part of the project "TCG Continuous Benchmarking".
#
# Copyright (C) 2020 Ahmed Karaman <ahmedkhaledkaraman@gmail.com>
# Copyright (C) 2020 Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import argparse
import os
import subprocess
import sys
# Parse the command line arguments
parser = argparse.ArgumentParser(
usage='topN_perf.py [-h] [-n] <number of displayed top functions > -- '
'<qemu executable> [<qemu executable options>] '
'<target executable> [<target executable options>]')
parser.add_argument('-n', dest='top', type=int, default=25,
help='Specify the number of top functions to print.')
parser.add_argument('command', type=str, nargs='+', help=argparse.SUPPRESS)
args = parser.parse_args()
# Extract the needed variables from the args
command = args.command
top = args.top
# Insure that perf is installed
check_perf_presence = subprocess.run(["which", "perf"],
stdout=subprocess.DEVNULL)
if check_perf_presence.returncode:
sys.exit("Please install perf before running the script!")
# Insure user has previllage to run perf
check_perf_executability = subprocess.run(["perf", "stat", "ls", "/"],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
if check_perf_executability.returncode:
sys.exit(
"""
Error:
You may not have permission to collect stats.
Consider tweaking /proc/sys/kernel/perf_event_paranoid,
which controls use of the performance events system by
unprivileged users (without CAP_SYS_ADMIN).
-1: Allow use of (almost) all events by all users
Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK
0: Disallow ftrace function tracepoint by users without CAP_SYS_ADMIN
Disallow raw tracepoint access by users without CAP_SYS_ADMIN
1: Disallow CPU event access by users without CAP_SYS_ADMIN
2: Disallow kernel profiling by users without CAP_SYS_ADMIN
To make this setting permanent, edit /etc/sysctl.conf too, e.g.:
kernel.perf_event_paranoid = -1
* Alternatively, you can run this script under sudo privileges.
"""
)
# Run perf record
perf_record = subprocess.run((["perf", "record", "--output=/tmp/perf.data"] +
command),
stdout=subprocess.DEVNULL,
stderr=subprocess.PIPE)
if perf_record.returncode:
os.unlink('/tmp/perf.data')
sys.exit(perf_record.stderr.decode("utf-8"))
# Save perf report output to /tmp/perf_report.out
with open("/tmp/perf_report.out", "w") as output:
perf_report = subprocess.run(
["perf", "report", "--input=/tmp/perf.data", "--stdio"],
stdout=output,
stderr=subprocess.PIPE)
if perf_report.returncode:
os.unlink('/tmp/perf.data')
output.close()
os.unlink('/tmp/perf_report.out')
sys.exit(perf_report.stderr.decode("utf-8"))
# Read the reported data to functions[]
functions = []
with open("/tmp/perf_report.out", "r") as data:
# Only read lines that are not comments (comments start with #)
# Only read lines that are not empty
functions = [line for line in data.readlines() if line and line[0]
!= '#' and line[0] != "\n"]
# Limit the number of top functions to "top"
number_of_top_functions = top if len(functions) > top else len(functions)
# Store the data of the top functions in top_functions[]
top_functions = functions[:number_of_top_functions]
# Print table header
print('{:>4} {:>10} {:<30} {}\n{} {} {} {}'.format('No.',
'Percentage',
'Name',
'Invoked by',
'-' * 4,
'-' * 10,
'-' * 30,
'-' * 25))
# Print top N functions
for (index, function) in enumerate(top_functions, start=1):
function_data = function.split()
function_percentage = function_data[0]
function_name = function_data[-1]
function_invoker = ' '.join(function_data[2:-2])
print('{:>4} {:>10} {:<30} {}'.format(index,
function_percentage,
function_name,
function_invoker))
# Remove intermediate files
os.unlink('/tmp/perf.data')
os.unlink('/tmp/perf_report.out')

26
target/mips/kvm.c
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@ -21,10 +21,12 @@
#include "qemu/main-loop.h"
#include "qemu/timer.h"
#include "sysemu/kvm.h"
#include "sysemu/kvm_int.h"
#include "sysemu/runstate.h"
#include "sysemu/cpus.h"
#include "kvm_mips.h"
#include "exec/memattrs.h"
#include "hw/boards.h"
#define DEBUG_KVM 0
@ -1270,3 +1272,27 @@ int kvm_arch_msi_data_to_gsi(uint32_t data)
{
abort();
}
int mips_kvm_type(MachineState *machine, const char *vm_type)
{
#if defined(KVM_CAP_MIPS_VZ) || defined(KVM_CAP_MIPS_TE)
int r;
KVMState *s = KVM_STATE(machine->accelerator);
#endif
#if defined(KVM_CAP_MIPS_VZ)
r = kvm_check_extension(s, KVM_CAP_MIPS_VZ);
if (r > 0) {
return KVM_VM_MIPS_VZ;
}
#endif
#if defined(KVM_CAP_MIPS_TE)
r = kvm_check_extension(s, KVM_CAP_MIPS_TE);
if (r > 0) {
return KVM_VM_MIPS_TE;
}
#endif
return -1;
}

11
target/mips/kvm_mips.h
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@ -12,6 +12,8 @@
#ifndef KVM_MIPS_H
#define KVM_MIPS_H
#include "cpu.h"
/**
* kvm_mips_reset_vcpu:
* @cpu: MIPSCPU
@ -23,4 +25,13 @@ void kvm_mips_reset_vcpu(MIPSCPU *cpu);
int kvm_mips_set_interrupt(MIPSCPU *cpu, int irq, int level);
int kvm_mips_set_ipi_interrupt(MIPSCPU *cpu, int irq, int level);
#ifdef CONFIG_KVM
int mips_kvm_type(MachineState *machine, const char *vm_type);
#else
static inline int mips_kvm_type(MachineState *machine, const char *vm_type)
{
return 0;
}
#endif
#endif /* KVM_MIPS_H */