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eae569c2c64a98dd7fcf3f4c0ac0076bffec0932
device_google_wahoo/power/power.c
Adrian Salido a60c8d7e89 power: rewrite battery stats parser 
Make parsing battery stats more extendable and switch to system_stats for
the battery stats.

Bug: 36064954
Test: dumpsys batterystats shows non-zero stats
Change-Id: I39c59f86cbb335da5796d23c0ff4a7435745b31e
2017-04-11 19:05:04 -07:00

675 lines
23 KiB
C
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/*
* Copyright (c) 2012-2013, The Linux Foundation. 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 The Linux Foundation 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 "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* 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.
*/
#define LOG_NIDEBUG 0
#include <errno.h>
#include <inttypes.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <stdlib.h>
#define LOG_TAG "QCOM PowerHAL"
#include <utils/Log.h>
#include <hardware/hardware.h>
#include <hardware/power.h>
#include "utils.h"
#include "metadata-defs.h"
#include "hint-data.h"
#include "performance.h"
#include "power-common.h"
#ifndef RPM_SYSTEM_STAT
#define RPM_SYSTEM_STAT "/d/system_stats"
#endif
/* RPM runs at 19.2Mhz. Divide by 19200 for msec */
#define RPM_CLK 19200
#define ARRAY_SIZE(x) (sizeof((x))/sizeof((x)[0]))
#define LINE_SIZE 128
#define MAX_RPM_PARAMS 2
#define PLATFORM_SLEEP_MODES RPM_MODE_MAX
#define XO_VOTERS (MAX_STATS - XO_VOTERS_START)
#define VMIN_VOTERS 0
enum stats_type {
RPM_MODE_XO,
RPM_MODE_VMIN,
RPM_MODE_MAX,
XO_VOTERS_START = RPM_MODE_MAX,
VOTER_APSS = XO_VOTERS_START,
VOTER_MPSS,
VOTER_ADSP,
VOTER_SLPI,
MAX_STATS,
};
struct stat_pair {
enum stats_type stat;
const char *label;
const char **parameters;
size_t num_parameters;
};
const char *rpm_stat_params[MAX_RPM_PARAMS] = {
"count",
"actual last sleep(msec)",
};
const char *master_stat_params[MAX_RPM_PARAMS] = {
"Accumulated XO duration",
"XO Count",
};
struct stat_pair rpm_stat_map[] = {
{ RPM_MODE_XO, "RPM Mode:vlow", rpm_stat_params, ARRAY_SIZE(rpm_stat_params) },
{ RPM_MODE_VMIN, "RPM Mode:vmin", rpm_stat_params, ARRAY_SIZE(rpm_stat_params) },
{ VOTER_APSS, "APSS", master_stat_params, ARRAY_SIZE(master_stat_params) },
{ VOTER_MPSS, "MPSS", master_stat_params, ARRAY_SIZE(master_stat_params) },
{ VOTER_ADSP, "ADSP", master_stat_params, ARRAY_SIZE(master_stat_params) },
{ VOTER_SLPI, "SLPI", master_stat_params, ARRAY_SIZE(master_stat_params) },
};
static int saved_dcvs_cpu0_slack_max = -1;
static int saved_dcvs_cpu0_slack_min = -1;
static int saved_mpdecision_slack_max = -1;
static int saved_mpdecision_slack_min = -1;
static int saved_interactive_mode = -1;
static int slack_node_rw_failed = 0;
static int display_hint_sent;
static void power_init(struct power_module *UNUSED(module))
{
ALOGI("QCOM power HAL initing.");
}
static void process_video_decode_hint(void *metadata)
{
char governor[80];
struct video_decode_metadata_t video_decode_metadata;
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return;
}
if (metadata) {
ALOGI("Processing video decode hint. Metadata: %s", (char *)metadata);
}
/* Initialize encode metadata struct fields. */
memset(&video_decode_metadata, 0, sizeof(struct video_decode_metadata_t));
video_decode_metadata.state = -1;
video_decode_metadata.hint_id = DEFAULT_VIDEO_DECODE_HINT_ID;
if (metadata) {
if (parse_video_decode_metadata((char *)metadata, &video_decode_metadata) ==
-1) {
ALOGE("Error occurred while parsing metadata.");
return;
}
} else {
return;
}
if (video_decode_metadata.state == 1) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
int resource_values[] = {THREAD_MIGRATION_SYNC_OFF};
perform_hint_action(video_decode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
int resource_values[] = {TR_MS_30, HISPEED_LOAD_90, HS_FREQ_1026, THREAD_MIGRATION_SYNC_OFF};
perform_hint_action(video_decode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
}
} else if (video_decode_metadata.state == 0) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
undo_hint_action(video_decode_metadata.hint_id);
}
}
}
static void process_video_encode_hint(void *metadata)
{
char governor[80];
struct video_encode_metadata_t video_encode_metadata;
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return;
}
/* Initialize encode metadata struct fields. */
memset(&video_encode_metadata, 0, sizeof(struct video_encode_metadata_t));
video_encode_metadata.state = -1;
video_encode_metadata.hint_id = DEFAULT_VIDEO_ENCODE_HINT_ID;
if (metadata) {
if (parse_video_encode_metadata((char *)metadata, &video_encode_metadata) ==
-1) {
ALOGE("Error occurred while parsing metadata.");
return;
}
} else {
return;
}
if (video_encode_metadata.state == 1) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
int resource_values[] = {IO_BUSY_OFF, SAMPLING_DOWN_FACTOR_1, THREAD_MIGRATION_SYNC_OFF};
perform_hint_action(video_encode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
int resource_values[] = {TR_MS_30, HISPEED_LOAD_90, HS_FREQ_1026, THREAD_MIGRATION_SYNC_OFF,
INTERACTIVE_IO_BUSY_OFF};
perform_hint_action(video_encode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
}
} else if (video_encode_metadata.state == 0) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
undo_hint_action(video_encode_metadata.hint_id);
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
undo_hint_action(video_encode_metadata.hint_id);
}
}
}
int __attribute__ ((weak)) power_hint_override(struct power_module *UNUSED(module),
power_hint_t UNUSED(hint),
void *UNUSED(data))
{
return HINT_NONE;
}
/* Declare function before use */
void interaction(int duration, int num_args, int opt_list[]);
static void power_hint(struct power_module *module, power_hint_t hint,
void *data)
{
/* Check if this hint has been overridden. */
if (power_hint_override(module, hint, data) == HINT_HANDLED) {
/* The power_hint has been handled. We can skip the rest. */
return;
}
switch(hint) {
case POWER_HINT_VSYNC:
break;
case POWER_HINT_SUSTAINED_PERFORMANCE:
ALOGI("Sustained perf power hint not handled in power_hint_override");
break;
case POWER_HINT_VR_MODE:
ALOGI("VR mode power hint not handled in power_hint_override");
break;
case POWER_HINT_INTERACTION:
{
int resources[] = {0x702, 0x20F, 0x30F};
int duration = 3000;
interaction(duration, sizeof(resources)/sizeof(resources[0]), resources);
}
break;
case POWER_HINT_VIDEO_ENCODE:
process_video_encode_hint(data);
break;
case POWER_HINT_VIDEO_DECODE:
process_video_decode_hint(data);
break;
default:
break;
}
}
int __attribute__ ((weak)) set_interactive_override(struct power_module *UNUSED(module),
int UNUSED(on))
{
return HINT_NONE;
}
void set_interactive(struct power_module *module, int on)
{
char governor[80];
char tmp_str[NODE_MAX];
struct video_encode_metadata_t video_encode_metadata;
int rc = 0;
if (set_interactive_override(module, on) == HINT_HANDLED) {
return;
}
ALOGI("Got set_interactive hint");
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return;
}
if (!on) {
/* Display off. */
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
int resource_values[] = {DISPLAY_OFF, MS_500, THREAD_MIGRATION_SYNC_OFF};
if (!display_hint_sent) {
perform_hint_action(DISPLAY_STATE_HINT_ID,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
display_hint_sent = 1;
}
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
int resource_values[] = {TR_MS_50, THREAD_MIGRATION_SYNC_OFF};
if (!display_hint_sent) {
perform_hint_action(DISPLAY_STATE_HINT_ID,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
display_hint_sent = 1;
}
} else if ((strncmp(governor, MSMDCVS_GOVERNOR, strlen(MSMDCVS_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(MSMDCVS_GOVERNOR))) {
if (saved_interactive_mode == 1){
/* Display turned off. */
if (sysfs_read(DCVS_CPU0_SLACK_MAX_NODE, tmp_str, NODE_MAX - 1)) {
if (!slack_node_rw_failed) {
ALOGE("Failed to read from %s", DCVS_CPU0_SLACK_MAX_NODE);
}
rc = 1;
} else {
saved_dcvs_cpu0_slack_max = atoi(tmp_str);
}
if (sysfs_read(DCVS_CPU0_SLACK_MIN_NODE, tmp_str, NODE_MAX - 1)) {
if (!slack_node_rw_failed) {
ALOGE("Failed to read from %s", DCVS_CPU0_SLACK_MIN_NODE);
}
rc = 1;
} else {
saved_dcvs_cpu0_slack_min = atoi(tmp_str);
}
if (sysfs_read(MPDECISION_SLACK_MAX_NODE, tmp_str, NODE_MAX - 1)) {
if (!slack_node_rw_failed) {
ALOGE("Failed to read from %s", MPDECISION_SLACK_MAX_NODE);
}
rc = 1;
} else {
saved_mpdecision_slack_max = atoi(tmp_str);
}
if (sysfs_read(MPDECISION_SLACK_MIN_NODE, tmp_str, NODE_MAX - 1)) {
if(!slack_node_rw_failed) {
ALOGE("Failed to read from %s", MPDECISION_SLACK_MIN_NODE);
}
rc = 1;
} else {
saved_mpdecision_slack_min = atoi(tmp_str);
}
/* Write new values. */
if (saved_dcvs_cpu0_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_dcvs_cpu0_slack_max);
if (sysfs_write(DCVS_CPU0_SLACK_MAX_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_dcvs_cpu0_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_dcvs_cpu0_slack_min);
if (sysfs_write(DCVS_CPU0_SLACK_MIN_NODE, tmp_str) != 0) {
if(!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MIN_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_mpdecision_slack_max);
if (sysfs_write(MPDECISION_SLACK_MAX_NODE, tmp_str) != 0) {
if(!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_mpdecision_slack_min);
if (sysfs_write(MPDECISION_SLACK_MIN_NODE, tmp_str) != 0) {
if(!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MIN_NODE);
}
rc = 1;
}
}
}
slack_node_rw_failed = rc;
}
} else {
/* Display on. */
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
undo_hint_action(DISPLAY_STATE_HINT_ID);
display_hint_sent = 0;
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
undo_hint_action(DISPLAY_STATE_HINT_ID);
display_hint_sent = 0;
} else if ((strncmp(governor, MSMDCVS_GOVERNOR, strlen(MSMDCVS_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(MSMDCVS_GOVERNOR))) {
if (saved_interactive_mode == -1 || saved_interactive_mode == 0) {
/* Display turned on. Restore if possible. */
if (saved_dcvs_cpu0_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_dcvs_cpu0_slack_max);
if (sysfs_write(DCVS_CPU0_SLACK_MAX_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_dcvs_cpu0_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_dcvs_cpu0_slack_min);
if (sysfs_write(DCVS_CPU0_SLACK_MIN_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MIN_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_mpdecision_slack_max);
if (sysfs_write(MPDECISION_SLACK_MAX_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_mpdecision_slack_min);
if (sysfs_write(MPDECISION_SLACK_MIN_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MIN_NODE);
}
rc = 1;
}
}
}
slack_node_rw_failed = rc;
}
}
saved_interactive_mode = !!on;
}
static ssize_t get_number_of_platform_modes(struct power_module *UNUSED(module)) {
return PLATFORM_SLEEP_MODES;
}
static int get_voter_list(struct power_module *UNUSED(module), size_t *voter) {
voter[0] = XO_VOTERS;
voter[1] = VMIN_VOTERS;
return 0;
}
static int parse_stats(const char **params, size_t params_size,
uint64_t *list, FILE *fp) {
ssize_t nread;
size_t len = LINE_SIZE;
char *line;
size_t params_read = 0;
size_t i;
line = malloc(len);
if (!line) {
ALOGE("%s: no memory to hold line", __func__);
return -ENOMEM;
}
while ((params_read < params_size) &&
(nread = getline(&line, &len, fp) > 0)) {
char *key = line + strspn(line, " \t");
char *value = strchr(key, ':');
if (!value || (value > (line + len)))
continue;
*value++ = '\0';
for (i = 0; i < params_size; i++) {
if (!strcmp(key, params[i])) {
list[i] = strtoull(value, NULL, 0);
params_read++;
break;
}
}
}
free(line);
return 0;
}
static int extract_stats(uint64_t *list, char *file,
struct stat_pair *map, size_t map_size) {
FILE *fp;
ssize_t read;
size_t len = LINE_SIZE;
char *line;
size_t i, stats_read = 0;
int ret = 0;
fp = fopen(file, "re");
if (fp == NULL) {
ALOGE("%s: failed to open '%s': %s", __func__, file, strerror(errno));
return -errno;
}
line = malloc(len);
if (!line) {
ALOGE("%s: no memory to hold line", __func__);
fclose(fp);
return -ENOMEM;
}
while ((stats_read < map_size) && (read = getline(&line, &len, fp) != -1)) {
size_t begin = strspn(line, " \t");
for (i = 0; i < map_size; i++) {
if (!strncmp(line + begin, map[i].label, strlen(map[i].label))) {
stats_read++;
break;
}
}
if (i == map_size)
continue;
ret = parse_stats(map[i].parameters, map[i].num_parameters,
&list[map[i].stat * MAX_RPM_PARAMS], fp);
if (ret < 0)
break;
}
free(line);
fclose(fp);
return ret;
}
static int get_platform_low_power_stats(struct power_module *UNUSED(module),
power_state_platform_sleep_state_t *list) {
uint64_t stats[MAX_STATS * MAX_RPM_PARAMS] = {0};
uint64_t *values;
int ret;
unsigned i;
if (!list) {
return -EINVAL;
}
ret = extract_stats(stats, RPM_SYSTEM_STAT,
rpm_stat_map, ARRAY_SIZE(rpm_stat_map));
if (ret) {
return ret;
}
/* Update statistics for XO_shutdown */
strcpy(list[0].name, "XO_shutdown");
values = stats + (RPM_MODE_XO * MAX_RPM_PARAMS);
list[0].total_transitions = values[0];
list[0].residency_in_msec_since_boot = values[1];
list[0].supported_only_in_suspend = false;
list[0].number_of_voters = XO_VOTERS;
for (i = 0; i < XO_VOTERS; i++) {
int voter = i + XO_VOTERS_START;
strlcpy(list[0].voters[i].name, rpm_stat_map[voter].label,
POWER_STATE_VOTER_NAME_MAX_LENGTH);
values = stats + (voter * MAX_RPM_PARAMS);
list[0].voters[i].total_time_in_msec_voted_for_since_boot = values[0] / RPM_CLK;
list[0].voters[i].total_number_of_times_voted_since_boot = values[1];
}
/* Update statistics for VMIN state */
strcpy(list[1].name, "VMIN");
values = stats + (RPM_MODE_VMIN * MAX_RPM_PARAMS);
list[1].total_transitions = values[0];
list[1].residency_in_msec_since_boot = values[1];
list[1].supported_only_in_suspend = false;
list[1].number_of_voters = VMIN_VOTERS;
return 0;
}
static int power_open(const hw_module_t* UNUSED(module), const char* name,
hw_device_t** device)
{
ALOGD("%s: enter; name=%s", __FUNCTION__, name);
int retval = 0; /* 0 is ok; -1 is error */
if (strcmp(name, POWER_HARDWARE_MODULE_ID) == 0) {
power_module_t *dev = (power_module_t *)calloc(1,
sizeof(power_module_t));
if (dev) {
/* Common hw_device_t fields */
dev->common.tag = HARDWARE_MODULE_TAG;
dev->common.module_api_version = POWER_MODULE_API_VERSION_0_5;
dev->common.module_api_version = HARDWARE_HAL_API_VERSION;
dev->init = power_init;
dev->powerHint = power_hint;
dev->setInteractive = set_interactive;
dev->get_number_of_platform_modes = get_number_of_platform_modes;
dev->get_platform_low_power_stats = get_platform_low_power_stats;
dev->get_voter_list = get_voter_list;
*device = (hw_device_t*)dev;
} else
retval = -ENOMEM;
} else {
retval = -EINVAL;
}
ALOGD("%s: exit %d", __FUNCTION__, retval);
return retval;
}
static struct hw_module_methods_t power_module_methods = {
.open = power_open,
};
struct power_module HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.module_api_version = POWER_MODULE_API_VERSION_0_5,
.hal_api_version = HARDWARE_HAL_API_VERSION,
.id = POWER_HARDWARE_MODULE_ID,
.name = "QCOM Power HAL",
.author = "Qualcomm",
.methods = &power_module_methods,
},
.init = power_init,
.powerHint = power_hint,
.setInteractive = set_interactive,
.get_number_of_platform_modes = get_number_of_platform_modes,
.get_platform_low_power_stats = get_platform_low_power_stats,
.get_voter_list = get_voter_list
};
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