72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation.
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* Copyright (c) 2021 Nordic Semiconductor ASA.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "pm_stats.h"
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#include <init.h>
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#include <kernel_structs.h>
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#include <stats/stats.h>
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#include <sys/printk.h>
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STATS_SECT_START(pm_stats)
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STATS_SECT_ENTRY32(state_count)
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STATS_SECT_ENTRY32(state_last_cycles)
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STATS_SECT_ENTRY32(state_total_cycles)
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STATS_SECT_END;
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STATS_NAME_START(pm_stats)
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STATS_NAME(pm_stats, state_count)
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STATS_NAME(pm_stats, state_last_cycles)
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STATS_NAME(pm_stats, state_total_cycles)
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STATS_NAME_END(pm_stats);
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static STATS_SECT_DECL(pm_stats) stats[CONFIG_MP_NUM_CPUS][PM_STATE_COUNT];
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#define PM_STAT_NAME_LEN sizeof("pm_cpu_XXX_state_X_stats")
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static char names[CONFIG_MP_NUM_CPUS][PM_STATE_COUNT][PM_STAT_NAME_LEN];
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static uint32_t time_start[CONFIG_MP_NUM_CPUS];
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static uint32_t time_stop[CONFIG_MP_NUM_CPUS];
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static int pm_stats_init(const struct device *dev)
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{
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ARG_UNUSED(dev);
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for (uint8_t i = 0U; i < CONFIG_MP_NUM_CPUS; i++) {
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for (uint8_t j = 0U; j < PM_STATE_COUNT; j++) {
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snprintk(names[i][j], PM_STAT_NAME_LEN,
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"pm_cpu_%03d_state_%1d_stats", i, j);
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stats_init(&(stats[i][j].s_hdr), STATS_SIZE_32, 3U,
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STATS_NAME_INIT_PARMS(stats));
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stats_register(names[i][j], &(stats[i][j].s_hdr));
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}
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}
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return 0;
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}
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SYS_INIT(pm_stats_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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void pm_stats_start(void)
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{
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time_start[_current_cpu->id] = k_cycle_get_32();
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}
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void pm_stats_stop(void)
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{
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time_stop[_current_cpu->id] = k_cycle_get_32();
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}
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void pm_stats_update(enum pm_state state)
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{
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uint8_t cpu = _current_cpu->id;
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uint32_t time_total = time_stop[cpu] - time_start[cpu];
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STATS_INC(stats[cpu][state], state_count);
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STATS_INCN(stats[cpu][state], state_total_cycles, time_total);
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STATS_SET(stats[cpu][state], state_last_cycles, time_total);
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}
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