90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
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/*
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* Copyright (c) 2017 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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/* #include <kernel_structs.h> */
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u64_t __noinit __start_swap_time;
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u64_t __noinit __end_swap_time;
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u64_t __noinit __start_intr_time;
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u64_t __noinit __end_intr_time;
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u64_t __noinit __start_tick_time;
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u64_t __noinit __end_tick_time;
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/* location of the time stamps*/
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u32_t __read_swap_end_time_value;
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u64_t __common_var_swap_end_time;
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/* NRF RTC TIMER runs ar very slow rate (32KHz), So in order to measure
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* Kernel stats dedicated timer is used to measure kernel stats
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*/
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#if defined(CONFIG_NRF_RTC_TIMER)
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#include <arch/arm/cortex_m/cmsis.h>
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/* To get current count of timer, first 1 need to be written into
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* Capture Register and Current Count will be copied into corresponding
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* current count register.
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*/
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#define TIMING_INFO_PRE_READ() (NRF_TIMER2->TASKS_CAPTURE[0] = 1)
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#define TIMING_INFO_OS_GET_TIME() (NRF_TIMER2->CC[0])
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#define TIMING_INFO_GET_TIMER_VALUE() TIMING_INFO_OS_GET_TIME()
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#else /* All other architectures */
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#define TIMING_INFO_PRE_READ()
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#define TIMING_INFO_OS_GET_TIME() k_cycle_get_32()
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#ifdef CONFIG_ARM
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#include <arch/arm/cortex_m/cmsis.h>
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#define TIMING_INFO_GET_TIMER_VALUE() SysTick->VAL
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#endif /* CONFIG_ARM */
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#endif /* CONFIG_NRF_RTC_TIMER */
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#ifdef CONFIG_ARM
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void read_timer_start_of_swap(void)
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{
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TIMING_INFO_PRE_READ();
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__start_swap_time = (u32_t) TIMING_INFO_GET_TIMER_VALUE();
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}
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void read_timer_end_of_swap(void)
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{
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if (__read_swap_end_time_value == 1) {
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TIMING_INFO_PRE_READ();
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__read_swap_end_time_value = 2;
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__common_var_swap_end_time = TIMING_INFO_OS_GET_TIME();
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}
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}
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/* ARM processors read current value of time through sysTick timer
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* and nrf soc read it though timer
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*/
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void read_timer_start_of_isr(void)
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{
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TIMING_INFO_PRE_READ();
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__start_intr_time = (u32_t) TIMING_INFO_GET_TIMER_VALUE();
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}
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void read_timer_end_of_isr(void)
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{
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TIMING_INFO_PRE_READ();
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__end_intr_time = (u32_t) TIMING_INFO_GET_TIMER_VALUE();
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}
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void read_timer_start_of_tick_handler(void)
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{
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TIMING_INFO_PRE_READ();
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__start_tick_time = (u32_t)TIMING_INFO_GET_TIMER_VALUE();
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}
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void read_timer_end_of_tick_handler(void)
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{
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TIMING_INFO_PRE_READ();
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__end_tick_time = (u32_t) TIMING_INFO_GET_TIMER_VALUE();
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}
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#endif /* CONFIG_ARM */
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