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examples/vm_power: cli in guest

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Provides a small sample application(guest_vm_power_mgr) to run on a VM.
The application is run by providing a core mask(-c) and number of memory
channels(-n). The core mask corresponds to the number of lcore channels to
attempt to open. A maximum of 64 channels per VM is allowed. The channels must
be monitored by the host.
After successful initialisation a CPU frequency command can be sent to the host
using:
set_cpu_freq <lcore_num> <up|down|min|max>.

Signed-off-by: Alan Carew <alan.carew@intel.com>
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
This commit is contained in:
Alan Carew 2014-11-25 16:18:06 +00:00 committed by Thomas Monjalon
parent 8db653ff78
commit f5e5c3347a
5 changed files with 407 additions and 0 deletions
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examples/vm_power_manager/guest_cli/Makefile Normal file
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# BSD LICENSE
#
# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of Intel 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 COPYRIGHT HOLDERS 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 COPYRIGHT
# OWNER 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.
ifeq ($(RTE_SDK),)
$(error "Please define RTE_SDK environment variable")
endif
# Default target, can be overridden by command line or environment
RTE_TARGET ?= x86_64-native-linuxapp-gcc
include $(RTE_SDK)/mk/rte.vars.mk
# binary name
APP = guest_vm_power_mgr
# all source are stored in SRCS-y
SRCS-y := main.c vm_power_cli_guest.c
CFLAGS += -O3 -I$(RTE_SDK)/lib/librte_power/
CFLAGS += $(WERROR_FLAGS)
# workaround for a gcc bug with noreturn attribute
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
CFLAGS_main.o += -Wno-return-type
endif
include $(RTE_SDK)/mk/rte.extapp.mk

88
examples/vm_power_manager/guest_cli/main.c Normal file
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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
/*
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <sys/epoll.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
*/
#include <signal.h>
#include <rte_lcore.h>
#include <rte_power.h>
#include <rte_debug.h>
#include <rte_config.h>
#include "vm_power_cli_guest.h"
#include "main.h"
static void
sig_handler(int signo)
{
printf("Received signal %d, exiting...\n", signo);
unsigned lcore_id;
RTE_LCORE_FOREACH(lcore_id) {
rte_power_exit(lcore_id);
}
}
int
MAIN(int argc, char **argv)
{
int ret;
unsigned lcore_id;
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_panic("Cannot init EAL\n");
signal(SIGINT, sig_handler);
signal(SIGTERM, sig_handler);
rte_power_set_env(PM_ENV_KVM_VM);
RTE_LCORE_FOREACH(lcore_id) {
rte_power_init(lcore_id);
}
run_cli(NULL);
return 0;
}

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examples/vm_power_manager/guest_cli/main.h Normal file
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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
#ifndef _MAIN_H_
#define _MAIN_H_
#ifdef RTE_EXEC_ENV_BAREMETAL
#define MAIN _main
#else
#define MAIN main
#endif
int MAIN(int argc, char **argv);
#endif /* _MAIN_H_ */
#ifndef MAIN_H_
#define MAIN_H_
#endif /* MAIN_H_ */

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examples/vm_power_manager/guest_cli/vm_power_cli_guest.c Normal file
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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <termios.h>
#include <cmdline_rdline.h>
#include <cmdline_parse.h>
#include <cmdline_parse_string.h>
#include <cmdline_parse_num.h>
#include <cmdline_socket.h>
#include <cmdline.h>
#include <rte_config.h>
#include <rte_log.h>
#include <rte_lcore.h>
#include <rte_power.h>
#include "vm_power_cli_guest.h"
#define CHANNEL_PATH "/dev/virtio-ports/virtio.serial.port.poweragent"
#define RTE_LOGTYPE_GUEST_CHANNEL RTE_LOGTYPE_USER1
struct cmd_quit_result {
cmdline_fixed_string_t quit;
};
static void cmd_quit_parsed(__attribute__((unused)) void *parsed_result,
__attribute__((unused)) struct cmdline *cl,
__attribute__((unused)) void *data)
{
unsigned lcore_id;
RTE_LCORE_FOREACH(lcore_id) {
rte_power_exit(lcore_id);
}
cmdline_quit(cl);
}
cmdline_parse_token_string_t cmd_quit_quit =
TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
cmdline_parse_inst_t cmd_quit = {
.f = cmd_quit_parsed, /* function to call */
.data = NULL, /* 2nd arg of func */
.help_str = "close the application",
.tokens = { /* token list, NULL terminated */
(void *)&cmd_quit_quit,
NULL,
},
};
/* *** VM operations *** */
struct cmd_set_cpu_freq_result {
cmdline_fixed_string_t set_cpu_freq;
uint8_t lcore_id;
cmdline_fixed_string_t cmd;
};
static void
cmd_set_cpu_freq_parsed(void *parsed_result, struct cmdline *cl,
__attribute__((unused)) void *data)
{
int ret = -1;
struct cmd_set_cpu_freq_result *res = parsed_result;
if (!strcmp(res->cmd , "up"))
ret = rte_power_freq_up(res->lcore_id);
else if (!strcmp(res->cmd , "down"))
ret = rte_power_freq_down(res->lcore_id);
else if (!strcmp(res->cmd , "min"))
ret = rte_power_freq_min(res->lcore_id);
else if (!strcmp(res->cmd , "max"))
ret = rte_power_freq_max(res->lcore_id);
if (ret != 1)
cmdline_printf(cl, "Error sending message: %s\n", strerror(ret));
}
cmdline_parse_token_string_t cmd_set_cpu_freq =
TOKEN_STRING_INITIALIZER(struct cmd_set_cpu_freq_result,
set_cpu_freq, "set_cpu_freq");
cmdline_parse_token_string_t cmd_set_cpu_freq_core_num =
TOKEN_NUM_INITIALIZER(struct cmd_set_cpu_freq_result,
lcore_id, UINT8);
cmdline_parse_token_string_t cmd_set_cpu_freq_cmd_cmd =
TOKEN_STRING_INITIALIZER(struct cmd_set_cpu_freq_result,
cmd, "up#down#min#max");
cmdline_parse_inst_t cmd_set_cpu_freq_set = {
.f = cmd_set_cpu_freq_parsed,
.data = NULL,
.help_str = "set_cpu_freq <core_num> <up|down|min|max>, Set the current "
"frequency for the specified core by scaling up/down/min/max",
.tokens = {
(void *)&cmd_set_cpu_freq,
(void *)&cmd_set_cpu_freq_core_num,
(void *)&cmd_set_cpu_freq_cmd_cmd,
NULL,
},
};
cmdline_parse_ctx_t main_ctx[] = {
(cmdline_parse_inst_t *)&cmd_quit,
(cmdline_parse_inst_t *)&cmd_set_cpu_freq_set,
NULL,
};
void
run_cli(__attribute__((unused)) void *arg)
{
struct cmdline *cl;
cl = cmdline_stdin_new(main_ctx, "vmpower(guest)> ");
if (cl == NULL)
return;
cmdline_interact(cl);
cmdline_stdin_exit(cl);
}

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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
#ifndef VM_POWER_CLI_H_
#define VM_POWER_CLI_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "channel_commands.h"
int guest_channel_host_connect(unsigned lcore_id);
int guest_channel_send_msg(struct channel_packet *pkt, unsigned lcore_id);
void guest_channel_host_disconnect(unsigned lcore_id);
void run_cli(__attribute__((unused)) void *arg);
#ifdef __cplusplus
}
#endif
#endif /* VM_POWER_CLI_H_ */