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kernel: rename boot time globals

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These are renamed to z_timestamp_main and z_timestamp_idle,
and now specified in kernel_internal.h.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-09-21 16:55:55 -07:00 • committed by Anas Nashif
commit e6654103ba
5 changed files with 15 additions and 14 deletions
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5
include/kernel.h
View file

@ -23,11 +23,6 @@
extern "C" {
#endif
#ifdef CONFIG_BOOT_TIME_MEASUREMENT
extern u32_t __main_time_stamp; /* timestamp when main task starts */
extern u32_t __idle_time_stamp; /* timestamp when CPU goes idle */
#endif
/**
* @brief Kernel APIs
* @defgroup kernel_apis Kernel APIs

4
kernel/idle.c
View file

@ -147,9 +147,9 @@ void idle(void *unused1, void *unused2, void *unused3)
#ifdef CONFIG_BOOT_TIME_MEASUREMENT
/* record timestamp when idling begins */
extern u32_t __idle_time_stamp;
extern u32_t z_timestamp_idle;
__idle_time_stamp = k_cycle_get_32();
z_timestamp_idle = k_cycle_get_32();
#endif
while (true) {

5
kernel/include/kernel_internal.h
View file

@ -295,6 +295,11 @@ extern u64_t z_arch_timing_value_swap_common;
extern u64_t z_arch_timing_value_swap_temp;
#endif /* CONFIG_EXECUTION_BENCHMARKING */
#ifdef CONFIG_BOOT_TIME_MEASUREMENT
extern u32_t z_timestamp_main; /* timestamp when main task starts */
extern u32_t z_timestamp_idle; /* timestamp when CPU goes idle */
#endif
#ifdef __cplusplus
}
#endif

6
kernel/init.c
View file

@ -66,8 +66,8 @@ LOG_MODULE_REGISTER(os);
/* boot time measurement items */
#ifdef CONFIG_BOOT_TIME_MEASUREMENT
u32_t __noinit __main_time_stamp; /* timestamp when main task starts */
u32_t __noinit __idle_time_stamp; /* timestamp when CPU goes idle */
u32_t __noinit z_timestamp_main; /* timestamp when main task starts */
u32_t __noinit z_timestamp_idle; /* timestamp when CPU goes idle */
#endif
/* init/main and idle threads */
@ -283,7 +283,7 @@ static void bg_thread_main(void *unused1, void *unused2, void *unused3)
#endif
#ifdef CONFIG_BOOT_TIME_MEASUREMENT
__main_time_stamp = k_cycle_get_32();
z_timestamp_main = k_cycle_get_32();
#endif
extern void main(void);

9
tests/benchmarks/boot_time/src/main.c
View file

@ -17,6 +17,7 @@
#include <zephyr.h>
#include <tc_util.h>
#include <kernel_internal.h>
void main(void)
{
@ -34,17 +35,17 @@ void main(void)
int freq = sys_clock_hw_cycles_per_sec() / 1000000;
main_us = __main_time_stamp / freq;
main_us = z_timestamp_main / freq;
task_us = task_time_stamp / freq;
idle_us = __idle_time_stamp / freq;
idle_us = z_timestamp_idle / freq;
TC_START("Boot Time Measurement");
TC_PRINT("Boot Result: Clock Frequency: %d MHz\n", freq);
TC_PRINT("_start->main(): %u cycles, %u us\n", __main_time_stamp,
TC_PRINT("_start->main(): %u cycles, %u us\n", z_timestamp_main,
main_us);
TC_PRINT("_start->task : %u cycles, %u us\n", task_time_stamp,
task_us);
TC_PRINT("_start->idle : %u cycles, %u us\n", __idle_time_stamp,
TC_PRINT("_start->idle : %u cycles, %u us\n", z_timestamp_idle,
idle_us);
TC_PRINT("Boot Time Measurement finished\n");