f367f071b6
Remove function name from comment and add @brief instead. Also capitilize first letter. Change-Id: Ib708b49bf02e5bc89b0066637a55874e659637e0 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
142 lines
4.7 KiB
C
142 lines
4.7 KiB
C
/* boot_time.c - Boot Time measurement task */
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/*
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* Copyright (c) 2013-2015 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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Measure boot time for both nanokernel and microkernel project which includes
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- from reset to kernel's _start
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- from _start to main()
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- from _start to task
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- from _start to idle (for microkernel)
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*/
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#ifdef CONFIG_NANOKERNEL
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#include <nanokernel.h>
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#else
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#include <zephyr.h>
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#include <version.h>
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#endif
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#include <arch/cpu.h>
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#include <tc_util.h>
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/* externs */
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extern uint64_t __start_tsc; /* timestamp when kernel begins executing */
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extern uint64_t __main_tsc; /* timestamp when main() begins executing */
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extern uint64_t __idle_tsc; /* timestamp when CPU went idle */
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void bootTimeTask(void)
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{
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uint64_t task_tsc; /* timestamp at beginning of first task */
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uint64_t _start_us; /* being of __start timestamp in us */
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uint64_t main_us; /* begin of main timestamp in us */
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uint64_t task_us; /* begin of task timestamp in us */
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uint64_t s_main_tsc; /* __start->main timestamp */
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uint64_t s_task_tsc; /*__start->task timestamp */
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#ifndef CONFIG_NANOKERNEL
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uint64_t idle_us; /* begin of idle timestamp in us */
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uint64_t s_idle_tsc; /*__start->idle timestamp */
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#endif /* ! CONFIG_NANOKERNEL */
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task_tsc = _NanoTscRead();
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#ifndef CONFIG_NANOKERNEL
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/* Go to sleep for 1 tick in order to timestamp when IdleTask halts. */
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task_sleep(1);
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#endif /* ! CONFIG_NANOKERNEL */
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_start_us = __start_tsc / CONFIG_CPU_CLOCK_FREQ_MHZ;
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s_main_tsc = __main_tsc-__start_tsc;
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main_us = s_main_tsc / CONFIG_CPU_CLOCK_FREQ_MHZ;
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s_task_tsc = task_tsc-__start_tsc;
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task_us = s_task_tsc / CONFIG_CPU_CLOCK_FREQ_MHZ;
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#ifndef CONFIG_NANOKERNEL
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s_idle_tsc = __idle_tsc-__start_tsc;
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idle_us = s_idle_tsc / CONFIG_CPU_CLOCK_FREQ_MHZ;
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#endif
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/* Indicate start for sanity test suite */
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TC_START("Boot Time Measurement");
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/* Only print lower 32bit of time result */
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#ifdef CONFIG_NANOKERNEL
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TC_PRINT("NanoKernel Boot Result: Clock Frequency: %d MHz\n",
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CONFIG_CPU_CLOCK_FREQ_MHZ);
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#else /* CONFIG_MICROKERNEL */
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TC_PRINT("MicroKernel Boot Result: Clock Frequency: %d MHz\n",
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CONFIG_CPU_CLOCK_FREQ_MHZ);
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#endif
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TC_PRINT("__start : %d cycles, %d us\n",
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(uint32_t)(__start_tsc & 0xFFFFFFFFULL),
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(uint32_t) (_start_us & 0xFFFFFFFFULL));
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TC_PRINT("_start->main(): %d cycles, %d us\n",
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(uint32_t)(s_main_tsc & 0xFFFFFFFFULL),
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(uint32_t) (main_us & 0xFFFFFFFFULL));
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TC_PRINT("_start->task : %d cycles, %d us\n",
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(uint32_t)(s_task_tsc & 0xFFFFFFFFULL),
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(uint32_t) (task_us & 0xFFFFFFFFULL));
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#ifndef CONFIG_NANOKERNEL /* CONFIG_MICROKERNEL */
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TC_PRINT("_start->idle : %d cycles, %d us\n",
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(uint32_t)(s_idle_tsc & 0xFFFFFFFFULL),
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(uint32_t) (idle_us & 0xFFFFFFFFULL));
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#endif
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TC_PRINT("Boot Time Measurement finished\n");
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// for sanity regression test utility.
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TC_END_RESULT(TC_PASS);
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TC_END_REPORT(TC_PASS);
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}
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#ifdef CONFIG_NANOKERNEL
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char __stack fiberStack[512];
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/**
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*
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* @brief Nanokernel entry point
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*
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* @return N/A
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*/
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void main(void)
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{
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/* record timestamp for nanokernel's main() function */
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__main_tsc = _NanoTscRead();
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/* create bootTime fibers */
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task_fiber_start(fiberStack, 512,
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(nano_fiber_entry_t) bootTimeTask, 0, 0, 6, 0);
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}
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#endif /* CONFIG_NANOKERNEL */
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