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Rename Profiler to Event Logger.

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In order to have a name according to the functionality of the feature.
This commit rename any text, function and variable related with the
Profiler name to Event logger.

Change-Id: I4f612cbc7c37965c35a64f06cc3ce5e3249d90e5
Signed-off-by: Yonattan Louise <yonattan.a.louise.mendoza@intel.com>
This commit is contained in:
Yonattan Louise 2015-10-16 15:45:02 -05:00 • committed by Anas Nashif
commit e378747706
34 changed files with 361 additions and 351 deletions
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8
arch/arm/core/cpu_idle.S
View file

@ -120,9 +120,9 @@ SECTION_FUNC(TEXT, _NanoIdleValClear)
*/
SECTION_FUNC(TEXT, nano_cpu_idle)
#ifdef CONFIG_PROFILER_SLEEP
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
push {lr}
bl _sys_profiler_enter_sleep
bl _sys_k_event_logger_enter_sleep
pop {lr}
#endif
@ -161,9 +161,9 @@ SECTION_FUNC(TEXT, nano_cpu_idle)
*/
SECTION_FUNC(TEXT, nano_cpu_atomic_idle)
#ifdef CONFIG_PROFILER_SLEEP
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
push {lr}
bl _sys_profiler_enter_sleep
bl _sys_k_event_logger_enter_sleep
pop {lr}
#endif

4
arch/arm/core/isr_wrapper.S
View file

@ -58,9 +58,9 @@ SECTION_FUNC(TEXT, _isr_wrapper)
push {lr} /* lr is now the first item on the stack */
#ifdef CONFIG_PROFILER_INTERRUPT
#ifdef CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT
push {lr}
bl _sys_profiler_interrupt
bl _sys_k_event_logger_interrupt
pop {lr}
#endif

4
arch/arm/core/swap.S
View file

@ -58,10 +58,10 @@ SECTION_FUNC(TEXT, __pendsv)
_GDB_STUB_EXC_ENTRY
#ifdef CONFIG_PROFILER_CONTEXT_SWITCH
#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
/* Register the context switch */
push {lr}
bl _sys_profiler_context_switch
bl _sys_k_event_logger_context_switch
pop {lr}
#endif

8
arch/arm/include/profiler_arch.h → arch/arm/include/kernel_event_logger_arch.h
View file

@ -16,11 +16,11 @@
/*
* @file
* @brief Profiler support for ARM
* @brief Kernel event logger support for ARM
*/
#ifndef __PROFILE_ARM_H__
#define __PROFILE_ARM_H__
#ifndef __KERNEL_EVENT_LOGGER_ARCH_H__
#define __KERNEL_EVENT_LOGGER_ARCH_H__
/**
* @brief Get the identification of the current interrupt.
@ -35,4 +35,4 @@ int _sys_current_irq_key_get(void)
return _IpsrGet();
}
#endif /* __PROFILE_ARM_H__ */
#endif /* __KERNEL_EVENT_LOGGER_ARCH_H__ */

8
arch/x86/core/cpuhalt.S
View file

@ -70,8 +70,8 @@ SECTION_FUNC(TEXT, nano_cpu_idle)
#ifdef CONFIG_INT_LATENCY_BENCHMARK
call _int_latency_stop
#endif
#ifdef CONFIG_PROFILER_SLEEP
call _sys_profiler_enter_sleep
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
call _sys_k_event_logger_enter_sleep
#endif
#if defined(CONFIG_BOOT_TIME_MEASUREMENT)
rdtsc /* record idle timestamp */
@ -113,8 +113,8 @@ SECTION_FUNC(TEXT, nano_cpu_atomic_idle)
#ifdef CONFIG_INT_LATENCY_BENCHMARK
call _int_latency_stop
#endif
#ifdef CONFIG_PROFILER_SLEEP
call _sys_profiler_enter_sleep
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
call _sys_k_event_logger_enter_sleep
#endif
sti /* make sure interrupts are enabled */

4
arch/x86/core/intstub.S
View file

@ -153,12 +153,12 @@ SECTION_FUNC(TEXT, _IntEnt)
popl %eax
#endif
#ifdef CONFIG_PROFILER_INTERRUPT
#ifdef CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT
/*
* Preserve EAX as it contains the stub return address.
*/
pushl %eax
call _sys_profiler_interrupt
call _sys_k_event_logger_interrupt
popl %eax
#endif

4
arch/x86/core/swap.S
View file

@ -121,11 +121,11 @@ SECTION_FUNC(TEXT, _Swap)
movl __tNANO_current_OFFSET (%eax), %ecx
movl %esp, __tTCS_coopReg_OFFSET + __tCoopReg_esp_OFFSET (%ecx)
#ifdef CONFIG_PROFILER_CONTEXT_SWITCH
#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
/* save %eax since it used as the return value for _Swap */
pushl %eax
/* Register the context switch */
call _sys_profiler_context_switch
call _sys_k_event_logger_context_switch
/* restore _Swap's %eax */
popl %eax
#endif

8
arch/x86/include/profiler_arch.h → arch/x86/include/kernel_event_logger_arch.h
View file

@ -16,11 +16,11 @@
/*
* @file
* @brief Profiler support for x86
* @brief Kernel event logger support for x86
*/
#ifndef __PROFILE_X86_H__
#define __PROFILE_X86_H__
#ifndef __KERNEL_EVENT_LOGGER_ARCH_H__
#define __KERNEL_EVENT_LOGGER_ARCH_H__
/**
* @brief Get the identification of the current interrupt.
@ -37,4 +37,4 @@ int _sys_current_irq_key_get(void)
return _loapic_isr_vector_get();
}
#endif /* __PROFILE_X86_H__ */
#endif /* __KERNEL_EVENT_LOGGER_ARCH_H__ */

6
drivers/timer/cortex_m_systick.c
View file

@ -233,9 +233,9 @@ void _TIMER_INT_HANDLER(void *unused)
{
ARG_UNUSED(unused);
#ifdef CONFIG_PROFILER_INTERRUPT
extern void _sys_profiler_interrupt(void);
_sys_profiler_interrupt();
#ifdef CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT
extern void _sys_k_event_logger_interrupt(void);
_sys_k_event_logger_interrupt();
#endif

96
include/misc/profiler.h → include/misc/kernel_event_logger.h
View file

@ -16,27 +16,27 @@
/*
* @file
* @brief Profiler support.
* @brief Kernel event logger support.
*/
#include <misc/event_logger.h>
#ifndef __PROFILE_H__
#define __PROFILE_H__
#ifndef __KERNEL_EVENT_LOGGER_H__
#define __KERNEL_EVENT_LOGGER_H__
#ifdef CONFIG_KERNEL_PROFILER
#ifdef CONFIG_KERNEL_EVENT_LOGGER
#ifdef CONFIG_PROFILER_CONTEXT_SWITCH
#define PROFILER_CONTEXT_SWITCH_EVENT_ID 0x0001
#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
#define KERNEL_EVENT_LOGGER_CONTEXT_SWITCH_EVENT_ID 0x0001
#endif
#ifdef CONFIG_PROFILER_INTERRUPT
#define PROFILER_INTERRUPT_EVENT_ID 0x0002
#ifdef CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT
#define KERNEL_EVENT_LOGGER_INTERRUPT_EVENT_ID 0x0002
#endif
#ifdef CONFIG_PROFILER_SLEEP
#define PROFILER_SLEEP_EVENT_ID 0x0003
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
#define KERNEL_EVENT_LOGGER_SLEEP_EVENT_ID 0x0003
#endif
#ifndef _ASMLANGUAGE
@ -44,44 +44,44 @@
* Global variable of the ring buffer that allows user to implement
* their own reading routine.
*/
struct event_logger sys_profiler_logger;
struct event_logger sys_k_event_logger;
/**
* @brief Sends a profile event message to the profiler.
* @brief Sends a event message to the kernel event logger.
*
* @details Sends a profile message to the profiler logger
* @details Sends a event message to the kernel event logger
* and informs that there are messages available.
*
* @param event_id The identification of the profiler event.
* @param event_id The identification of the event.
* @param data Pointer to the data of the message.
* @param data_size Size of the data in 32-bit words.
*
* @return No return value.
*/
#define sys_profiler_put(event_id, data, data_size) \
sys_event_logger_put(&sys_profiler_logger, event_id, data, data_size)
#define sys_k_event_logger_put(event_id, data, data_size) \
sys_event_logger_put(&sys_k_event_logger, event_id, data, data_size)
/**
* @brief Sends a profile event message to the profiler with the current
* @brief Sends a event message to the kernel event logger with the current
* timestamp.
*
* @details Sends a profile message to the profiler logger and informs that
* @details Sends a event message to the kernel event logger and informs that
* there messages available. The timestamp when the event occurred is stored
* as part of the event message.
*
* @param event_id The identification of the profiler event.
* @param event_id The identification of the event.
*
* @return No return value.
*/
void sys_profiler_put_timed(uint16_t event_id);
void sys_k_event_logger_put_timed(uint16_t event_id);
/**
* @brief Retrieves a profiler event message.
* @brief Retrieves a kernel event message.
*
* @details Retrieves a profiler event message copying it to the provided
* @details Retrieves a kernel event message copying it to the provided
* buffer. If the buffer is smaller than the message size the function returns
* an error. The function retrieves messages in FIFO order.
*
@ -91,22 +91,22 @@ void sys_profiler_put_timed(uint16_t event_id);
* @param buffer_size Size of the buffer in 32-bit words.
*
* @return -EMSGSIZE if the buffer size is smaller than the message size,
* the amount of 32-bit words copied or zero if there are no profile event
* the amount of 32-bit words copied or zero if there are no kernel event
* messages available.
*/
#define sys_profiler_get(event_id, dropped, buffer, buffer_size) \
sys_event_logger_get(&sys_profiler_logger, event_id, dropped, buffer, \
#define sys_k_event_logger_get(event_id, dropped, buffer, buffer_size) \
sys_event_logger_get(&sys_k_event_logger, event_id, dropped, buffer, \
buffer_size)
/**
* @brief Retrieves a profiler event message, wait if there is no message
* @brief Retrieves a kernel event message, wait if there is no message
* available.
*
* @details Retrieves a profiler event message copying it to the provided
* @details Retrieves a kernel event message copying it to the provided
* buffer. If the buffer is smaller than the message size the function returns
* an error. The function retrieves messages in FIFO order. If there is no
* profiler event message available the caller pends until a new message is
* kernel event message available the caller pends until a new message is
* logged.
*
* @param event_id Pointer to the id of the event fetched
@ -117,21 +117,21 @@ void sys_profiler_put_timed(uint16_t event_id);
* @return -EMSGSIZE if the buffer size is smaller than the message size, or
* the amount of 32-bit words copied.
*/
#define sys_profiler_get_wait(event_id, dropped, buffer, buffer_size) \
sys_event_logger_get_wait(&sys_profiler_logger, event_id, dropped, \
#define sys_k_event_logger_get_wait(event_id, dropped, buffer, buffer_size) \
sys_event_logger_get_wait(&sys_k_event_logger, event_id, dropped, \
buffer, buffer_size)
#ifdef CONFIG_NANO_TIMEOUTS
/**
* @brief Retrieves a profiler event message, wait with a timeout if there is
* @brief Retrieves a kernel event message, wait with a timeout if there is
* no profiling event messages available.
*
* @details Retrieves a profiler event message copying it to the provided
* @details Retrieves a kernel event message copying it to the provided
* buffer. If the buffer is smaller than the message size the function returns
* an error. The function retrieves messages in FIFO order. If there are no
* profiler event messages available the caller pends until a new message is
* kernel event messages available the caller pends until a new message is
* logged or the timeout expires.
*
* @param event_id Pointer to the id of the event fetched
@ -144,42 +144,42 @@ void sys_profiler_put_timed(uint16_t event_id);
* amount of 32-bit words copied or zero if the timeout expires and the was no
* message available.
*/
#define sys_profiler_get_wait_timeout(event_id, dropped, buffer, buffer_size, \
#define sys_k_event_logger_get_wait_timeout(event_id, dropped, buffer, buffer_size, \
timeout) \
sys_event_logger_get_wait_timeout(event_id, dropped, \
&sys_profiler_logger, buffer, \
&sys_k_event_logger, buffer, \
buffer_size, timeout)
#endif /* CONFIG_NANO_TIMEOUTS */
#ifdef CONFIG_PROFILER_CONTEXT_SWITCH
#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
/**
* @brief Register the fiber that calls the function as collector
*
* @details Initialize internal profiling data. This avoid registering the
* context switch of the collector fiber when CONFIG_PROFILE_THREAD_SWITCH
* is enable.
* @details Initialize internal profiling data. This avoid registering
* the context switch of the collector fiber when
* CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH is enable.
*
* @return No return value.
*/
void sys_profiler_register_as_collector(void);
#else /* !CONFIG_PROFILER_CONTEXT_SWITCH */
static inline void sys_profiler_register_as_collector(void) {};
#endif /* CONFIG_PROFILER_CONTEXT_SWITCH */
void sys_k_event_logger_register_as_collector(void);
#else /* !CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH */
static inline void sys_k_event_logger_register_as_collector(void) {};
#endif /* CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH */
#endif /* _ASMLANGUAGE */
#else /* !CONFIG_KERNEL_PROFILER */
#else /* !CONFIG_KERNEL_EVENT_LOGGER */
#ifndef _ASMLANGUAGE
static inline void sys_profiler_put(uint16_t event_id, uint32_t *event_data,
static inline void sys_k_event_logger_put(uint16_t event_id, uint32_t *event_data,
uint8_t data_size) {};
static inline void sys_profiler_put_timed(uint16_t event_id) {};
static inline void sys_k_event_logger_put_timed(uint16_t event_id) {};
#endif /* _ASMLANGUAGE */
#endif /* CONFIG_KERNEL_PROFILER */
#endif /* CONFIG_KERNEL_EVENT_LOGGER */
#endif /* __PROFILE_H__ */
#endif /* __KERNEL_EVENT_LOGGER_H__ */

34
kernel/Kconfig
View file

@ -94,51 +94,51 @@ config EVENT_LOGGER
Enable event logging feature. Allow the usage of a ring buffer to
transmit event messages with a single interface to collect them.
config KERNEL_PROFILER
config KERNEL_EVENT_LOGGER
bool
prompt "Enable profiler features"
prompt "Enable kernel event logger features"
default n
select EVENT_LOGGER
help
This feature enables the usage of the profiling logger. Provides the
logging of sleep events (either entering or leaving low power conditions),
context switch events, interrupt events, boot events and a method to
collect these profile messages.
collect these event messages.
config PROFILER_BUFFER_SIZE
config KERNEL_EVENT_LOGGER_BUFFER_SIZE
int
prompt "Profiler buffer size"
prompt "Kernel event logger buffer size"
default 128
depends on KERNEL_PROFILER
depends on KERNEL_EVENT_LOGGER
help
Buffer size in 32-bit words.
menu "Profiler points"
depends on KERNEL_PROFILER
menu "Kernel event logging points"
depends on KERNEL_EVENT_LOGGER
config PROFILER_CONTEXT_SWITCH
config KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
bool
prompt "Context switch profiler point"
prompt "Context switch event logging point"
default n
depends on KERNEL_PROFILER
depends on KERNEL_EVENT_LOGGER
help
Enable the context switch event messages.
config PROFILER_INTERRUPT
config KERNEL_EVENT_LOGGER_INTERRUPT
bool
prompt "Interrupt profiler point"
prompt "Interrupt event logging point"
default n
depends on KERNEL_PROFILER
depends on KERNEL_EVENT_LOGGER
help
Enable interrupt event messages. These messages provide the following
information: The time when interrupts occur.
config PROFILER_SLEEP
config KERNEL_EVENT_LOGGER_SLEEP
bool
prompt "Sleep profiler point"
prompt "Sleep event logging point"
default n
depends on KERNEL_PROFILER && ADVANCED_POWER_MANAGEMENT
depends on KERNEL_EVENT_LOGGER && ADVANCED_POWER_MANAGEMENT
help
Enable low power condition event messages. These messages provide the
following information:

6
kernel/microkernel/k_idle.c
View file

@ -320,9 +320,9 @@ void _sys_power_save_idle_exit(int32_t ticks)
#else
ARG_UNUSED(ticks);
#endif /* CONFIG_TICKLESS_IDLE */
#ifdef CONFIG_PROFILER_SLEEP
extern void _sys_profiler_exit_sleep(void);
_sys_profiler_exit_sleep();
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
extern void _sys_k_event_logger_exit_sleep(void);
_sys_k_event_logger_exit_sleep();
#endif
}

2
kernel/nanokernel/Makefile
View file

@ -14,5 +14,5 @@ obj-$(CONFIG_INT_LATENCY_BENCHMARK) += int_latency_bench.o
obj-$(CONFIG_ADVANCED_POWER_MANAGEMENT) += idle.o
obj-$(CONFIG_NANO_TIMERS) += nano_timer.o
obj-$(CONFIG_EVENT_LOGGER) += event_logger.o
obj-$(CONFIG_KERNEL_PROFILER) += profiler.o
obj-$(CONFIG_KERNEL_EVENT_LOGGER) += kernel_event_logger.o
obj-$(CONFIG_RING_BUFFER) += ring_buffer.o

155
kernel/nanokernel/kernel_event_logger.c Normal file
View file

@ -0,0 +1,155 @@
/*
* Copyright (c) 2015 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @file
* @brief Kernel event logger support.
*/
#include <misc/kernel_event_logger.h>
#include <misc/util.h>
#include <init.h>
#include <nano_private.h>
#include <kernel_event_logger_arch.h>
uint32_t _sys_k_event_logger_buffer[CONFIG_KERNEL_EVENT_LOGGER_BUFFER_SIZE];
#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
void *_collector_fiber;
#endif
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
uint32_t _sys_k_event_logger_sleep_start_time;
#endif
/**
* @brief Initialize the kernel event logger system.
*
* @details Initialize the ring buffer and the sync semaphore.
*
* @return No return value.
*/
static int _sys_k_event_logger_init(struct device *arg)
{
ARG_UNUSED(arg);
sys_event_logger_init(&sys_k_event_logger, _sys_k_event_logger_buffer,
CONFIG_KERNEL_EVENT_LOGGER_BUFFER_SIZE);
return 0;
}
DECLARE_DEVICE_INIT_CONFIG(kernel_event_logger_0, "",
_sys_k_event_logger_init, NULL);
nano_early_init(kernel_event_logger_0, NULL);
void sys_k_event_logger_put_timed(uint16_t event_id)
{
uint32_t data[1];
data[0] = nano_tick_get_32();
sys_event_logger_put(&sys_k_event_logger, event_id, data,
ARRAY_SIZE(data));
}
#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
void _sys_k_event_logger_context_switch(void)
{
extern tNANO _nanokernel;
uint32_t data[2];
extern void _sys_event_logger_put_non_preemptible(
struct event_logger *logger,
uint16_t event_id,
uint32_t *event_data,
uint8_t data_size);
/* if the kernel event logger has not been initialized, we do nothing */
if (sys_k_event_logger.ring_buf.buf == NULL) {
return;
}
if (_collector_fiber != _nanokernel.current) {
data[0] = nano_tick_get_32();
data[1] = (uint32_t)_nanokernel.current;
/*
* The mechanism we use to log the kernel events uses a sync semaphore
* to inform that there are available events to be collected. The
* context switch event can be triggered from a task. When we
* signal a semaphore from a task and a fiber is waiting for
* that semaphore, a context switch is generated immediately. Due to
* the fact that we register the context switch event while the context
* switch is being processed, a new context switch can be generated
* before the kernel finishes processing the current context switch. We
* need to prevent this because the kernel is not able to handle it.
* The _sem_give_non_preemptible function does not trigger a context
* switch when we signal the semaphore from any type of thread. Using
* _sys_event_logger_put_non_preemptible function, that internally uses
* _sem_give_non_preemptible function for signaling the sync semaphore,
* allow us registering the context switch event without triggering any
* new context switch during the process.
*/
_sys_event_logger_put_non_preemptible(&sys_k_event_logger,
KERNEL_EVENT_LOGGER_CONTEXT_SWITCH_EVENT_ID, data,
ARRAY_SIZE(data));
}
}
void sys_k_event_logger_register_as_collector(void)
{
_collector_fiber = _nanokernel.current;
}
#endif /* CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH */
#ifdef CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT
void _sys_k_event_logger_interrupt(void)
{
uint32_t data[2];
data[0] = nano_tick_get_32();
data[1] = _sys_current_irq_key_get();
sys_k_event_logger_put(KERNEL_EVENT_LOGGER_INTERRUPT_EVENT_ID, data,
ARRAY_SIZE(data));
}
#endif /* CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT */
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
void _sys_k_event_logger_enter_sleep(void)
{
_sys_k_event_logger_sleep_start_time = nano_cycle_get_32();
}
void _sys_k_event_logger_exit_sleep(void)
{
uint32_t data[3];
data[0] = nano_tick_get_32();
data[1] = (nano_cycle_get_32() - _sys_k_event_logger_sleep_start_time)
/ sys_clock_hw_cycles_per_tick;
/* register the cause of exiting sleep mode */
data[2] = _sys_current_irq_key_get();
sys_k_event_logger_put(KERNEL_EVENT_LOGGER_SLEEP_EVENT_ID, data,
ARRAY_SIZE(data));
}
#endif /* CONFIG_KERNEL_EVENT_LOGGER_SLEEP */

157
kernel/nanokernel/profiler.c
View file

@ -1,157 +0,0 @@
/*
* Copyright (c) 2015 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @file
* @brief Profiler support.
*/
#include <misc/profiler.h>
#include <misc/util.h>
#include <init.h>
#include <nano_private.h>
#include <profiler_arch.h>
uint32_t _sys_profiler_buffer[CONFIG_PROFILER_BUFFER_SIZE];
#ifdef CONFIG_PROFILER_CONTEXT_SWITCH
void *_collector_fiber;
#endif
#ifdef CONFIG_PROFILER_SLEEP
uint32_t _sys_profiler_sleep_start_time;
#endif
/**
* @brief Initialize the profiler system.
*
* @details Initialize the ring buffer and the sync semaphore.
*
* @return No return value.
*/
static int _sys_profiler_init(struct device *arg)
{
ARG_UNUSED(arg);
sys_event_logger_init(&sys_profiler_logger, _sys_profiler_buffer,
CONFIG_PROFILER_BUFFER_SIZE);
return 0;
}
DECLARE_DEVICE_INIT_CONFIG(profiler_0, "", _sys_profiler_init, NULL);
nano_early_init(profiler_0, NULL);
void sys_profiler_put_timed(uint16_t event_id)
{
uint32_t data[1];
data[0] = nano_tick_get_32();
sys_event_logger_put(&sys_profiler_logger, event_id, data,
ARRAY_SIZE(data));
}
#ifdef CONFIG_PROFILER_CONTEXT_SWITCH
void _sys_profiler_context_switch(void)
{
extern tNANO _nanokernel;
uint32_t data[2];
extern void _sys_event_logger_put_non_preemptible(
struct event_logger *logger,
uint16_t event_id,
uint32_t *event_data,
uint8_t data_size);
/* if the profiler has not been initialized, we do nothing */
if (sys_profiler_logger.ring_buf.buf == NULL) {
return;
}
if (_collector_fiber != _nanokernel.current) {
data[0] = nano_tick_get_32();
data[1] = (uint32_t)_nanokernel.current;
/*
* The mechanism we use to log the profile events uses a sync
* semaphore to inform that there are available events to be
* collected. The context switch event can be triggered from a
* task. When we signal a semaphore from a task and a fiber is
* waiting for that semaphore, a context switch is generated
* immediately. Due to the fact that we register the context
* switch event while the context switch is being processed, a
* new context switch can be generated before the kernel
* finishes processing the current context switch. We
* need to prevent this because the kernel is not able to
* handle it.
*
* The _sem_give_non_preemptible function does not trigger a
* context switch when we signal the semaphore from any type of
* thread. Using _sys_event_logger_put_non_preemptible function,
* that internally uses _sem_give_non_preemptible function for
* signaling the sync semaphore, allow us registering the
* context switch event without triggering any new context
* switch during the process.
*/
_sys_event_logger_put_non_preemptible(&sys_profiler_logger,
PROFILER_CONTEXT_SWITCH_EVENT_ID,
data,
ARRAY_SIZE(data));
}
}
void sys_profiler_register_as_collector(void)
{
_collector_fiber = _nanokernel.current;
}
#endif /* CONFIG_PROFILER_CONTEXT_SWITCH */
#ifdef CONFIG_PROFILER_INTERRUPT
void _sys_profiler_interrupt(void)
{
uint32_t data[2];
data[0] = nano_tick_get_32();
data[1] = _sys_current_irq_key_get();
sys_profiler_put(PROFILER_INTERRUPT_EVENT_ID, data, ARRAY_SIZE(data));
}
#endif /* CONFIG_PROFILER_INTERRUPT */
#ifdef CONFIG_PROFILER_SLEEP
void _sys_profiler_enter_sleep(void)
{
_sys_profiler_sleep_start_time = nano_cycle_get_32();
}
void _sys_profiler_exit_sleep(void)
{
uint32_t data[3];
data[0] = nano_tick_get_32();
data[1] = (nano_cycle_get_32() - _sys_profiler_sleep_start_time) /
sys_clock_hw_cycles_per_tick;
/* register the cause of exiting sleep mode */
data[2] = _sys_current_irq_key_get();
sys_profiler_put(PROFILER_SLEEP_EVENT_ID, data, ARRAY_SIZE(data));
}
#endif /* CONFIG_PROFILER_SLEEP */

0
samples/microkernel/apps/profiler_sample/Makefile → samples/microkernel/apps/kernel_event_logger_sample/Makefile
View file

2
samples/microkernel/apps/profiler_sample/README.txt → samples/microkernel/apps/kernel_event_logger_sample/README.txt
View file

@ -1,4 +1,4 @@
Title: Profiler Sample
Title: Kernel Event Logger Sample
Description:

2
samples/microkernel/apps/profiler_sample/prj.mdef → samples/microkernel/apps/kernel_event_logger_sample/prj.mdef
View file

@ -6,7 +6,7 @@
% TASK NAME PRIO ENTRY STACK GROUPS
% ==================================================
TASK profiler 5 profiler_demo 1024 [EXE]
TASK k_logger 5 k_event_logger_demo 1024 [EXE]
TASK phi1Task0 6 philEntry 1024 [PHI]
TASK philTask1 6 philEntry 1024 [PHI]
TASK philTask2 6 philEntry 1024 [PHI]

11
samples/microkernel/apps/kernel_event_logger_sample/prj_arm.conf Normal file
View file

@ -0,0 +1,11 @@
CONFIG_COMPILER_OPT="-O0"
CONFIG_NUM_IRQS=43
CONFIG_NANO_TIMEOUTS=y
CONFIG_RING_BUFFER=y
CONFIG_KERNEL_EVENT_LOGGER=y
CONFIG_KERNEL_EVENT_LOGGER_BUFFER_SIZE=16
CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH=y
CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT=y
CONFIG_ADVANCED_POWER_MANAGEMENT=y
CONFIG_TICKLESS_IDLE=n
CONFIG_KERNEL_EVENT_LOGGER_SLEEP=y

10
samples/microkernel/apps/profiler_sample/prj_x86.conf → samples/microkernel/apps/kernel_event_logger_sample/prj_x86.conf
View file

@ -1,11 +1,11 @@
# Let stack canaries use non-random number generator.
# This option is NOT to be used in production code.
CONFIG_RING_BUFFER=y
CONFIG_KERNEL_PROFILER=y
CONFIG_KERNEL_EVENT_LOGGER=y
CONFIG_NANO_TIMEOUTS=y
CONFIG_PROFILER_BUFFER_SIZE=16
CONFIG_PROFILER_CONTEXT_SWITCH=y
CONFIG_PROFILER_INTERRUPT=y
CONFIG_KERNEL_EVENT_LOGGER_BUFFER_SIZE=16
CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH=y
CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT=y
CONFIG_ADVANCED_POWER_MANAGEMENT=y
CONFIG_TICKLESS_IDLE=y
CONFIG_PROFILER_SLEEP=y
CONFIG_KERNEL_EVENT_LOGGER_SLEEP=y

3
samples/microkernel/apps/kernel_event_logger_sample/src/Makefile Normal file
View file

@ -0,0 +1,3 @@
ccflags-y += ${PROJECTINCLUDE} -I${ZEPHYR_BASE}/samples/microkernel/apps/philosophers/src
obj-y = kernel_event_collector_sample.o ../../../../microkernel/apps/philosophers/src/phil_fiber.o

43
samples/microkernel/apps/profiler_sample/src/profiler_collector_sample.c → samples/microkernel/apps/kernel_event_logger_sample/src/kernel_event_collector_sample.c
View file

@ -1,4 +1,4 @@
/* profiler_collector_sample.c - Profiler sample project */
/* kernel_event_collector_sample.c - Kernel event collector sample project */
/*
* Copyright (c) 2015 Intel Corporation
@ -19,7 +19,7 @@
#include <zephyr.h>
#include "phil.h"
#include <misc/profiler.h>
#include <misc/kernel_event_logger.h>
#include <string.h>
#define RANDOM(x) (((nano_tick_get_32() * ((x) + 1)) & 0x2F) + 1)
@ -29,7 +29,7 @@
extern void philEntry(void);
#define STSIZE 1024
char __stack profiler_stack[2][STSIZE];
char __stack kernel_event_logger_stack[2][STSIZE];
struct context_switch_data_t {
uint32_t thread_id;
@ -37,7 +37,7 @@ struct context_switch_data_t {
uint32_t count;
};
int total_dropped_counter=0;
int total_dropped_counter;
#define MAX_BUFFER_CONTEXT_DATA 20
@ -236,7 +236,9 @@ void summary_data_printer(void)
PRINTF("\x1b[15;32HINTERRUPT EVENT DATA");
PRINTF("\x1b[16;32H--------------------");
PRINTF("\x1b[17;32HInterrupt counters");
int line = 0;
for (i = 0; i < 255; i++) {
if (interrupt_counters[i] > 0) {
PRINTF("\x1b[%d;%dHirq #%d : %d times", 18 + line, 32, i,
@ -252,9 +254,9 @@ void summary_data_printer(void)
/**
* @brief Profiler data collector fiber
* @brief Kernel event data collector fiber
*
* @details Collect the profiler messages and process them depending
* @details Collect the kernel event messages and process them depending
* the kind of event received.
*
* @return No return value.
@ -269,12 +271,13 @@ void profiling_data_collector(void)
/* We register the fiber as collector to avoid this fiber generating a
* context switch event every time it collects the data
*/
sys_profiler_register_as_collector();
sys_k_event_logger_register_as_collector();
while (1) {
/* collect the data */
uint8_t data_length = SIZE32_OF(data);
res = sys_profiler_get_wait(&event_id, &dropped_count, data,
res = sys_k_event_logger_get_wait(&event_id, &dropped_count, data,
&data_length);
if (res > 0) {
/* Register the amount of droppped events occurred */
@ -284,7 +287,7 @@ void profiling_data_collector(void)
/* process the data */
switch (event_id) {
case PROFILER_CONTEXT_SWITCH_EVENT_ID:
case KERNEL_EVENT_LOGGER_CONTEXT_SWITCH_EVENT_ID:
if (data_length != 2) {
PRINTF("\x1b[13;1HError in context switch message. "
"event_id = %d, Expected %d, received %d\n",
@ -293,7 +296,7 @@ void profiling_data_collector(void)
register_context_switch_data(data[0], data[1]);
}
break;
case PROFILER_INTERRUPT_EVENT_ID:
case KERNEL_EVENT_LOGGER_INTERRUPT_EVENT_ID:
if (data_length != 2) {
PRINTF("\x1b[13;1HError in sleep message. "
"event_id = %d, Expected %d, received %d\n",
@ -302,7 +305,7 @@ void profiling_data_collector(void)
register_interrupt_event_data(data[0], data[1]);
}
break;
case PROFILER_SLEEP_EVENT_ID:
case KERNEL_EVENT_LOGGER_SLEEP_EVENT_ID:
if (data_length != 3) {
PRINTF("\x1b[13;1HError in sleep message. "
"event_id = %d, Expected %d, received %d\n",
@ -328,17 +331,17 @@ void profiling_data_collector(void)
/**
* @brief Start the demo fibers
*
* @details Start the profiler data colector fiber and the summary printer
* @details Start the kernel event data colector fiber and the summary printer
* fiber that shows the context switch data.
*
* @return No return value.
*/
void profiler_fiber_start(void)
void kernel_event_logger_fiber_start(void)
{
PRINTF("\x1b[2J\x1b[15;1H");
task_fiber_start(&profiler_stack[0][0], STSIZE,
task_fiber_start(&kernel_event_logger_stack[0][0], STSIZE,
(nano_fiber_entry_t) profiling_data_collector, 0, 0, 6, 0);
task_fiber_start(&profiler_stack[1][0], STSIZE,
task_fiber_start(&kernel_event_logger_stack[1][0], STSIZE,
(nano_fiber_entry_t) summary_data_printer, 0, 0, 6, 0);
}
@ -349,7 +352,7 @@ struct nano_sem forks[N_PHILOSOPHERS];
/**
* @brief Manokernel entry point.
*
* @details Start the profiler data colector fiber. Then
* @details Start the kernel event data colector fiber. Then
* do wait forever.
* @return No return value.
*/
@ -357,7 +360,7 @@ int main(void)
{
int i;
profiler_fiber_start();
kernel_event_logger_fiber_start();
/* initialize philosopher semaphores */
for (i = 0; i < N_PHILOSOPHERS; i++) {
@ -383,14 +386,14 @@ int main(void)
/**
* @brief Microkernel task.
*
* @details Start the profiler data colector fiber. Then
* @details Start the kernel event data colector fiber. Then
* do wait forever.
*
* @return No return value.
*/
void profiler_demo(void)
void k_event_logger_demo(void)
{
profiler_fiber_start();
kernel_event_logger_fiber_start();
task_group_start(PHI);
}

0
samples/microkernel/apps/profiler_sample/testcase.ini → samples/microkernel/apps/kernel_event_logger_sample/testcase.ini
View file

11
samples/microkernel/apps/profiler_sample/prj_arm.conf
View file

@ -1,11 +0,0 @@
CONFIG_COMPILER_OPT="-O0"
CONFIG_NUM_IRQS=43
CONFIG_NANO_TIMEOUTS=y
CONFIG_RING_BUFFER=y
CONFIG_KERNEL_PROFILER=y
CONFIG_PROFILER_BUFFER_SIZE=16
CONFIG_PROFILER_CONTEXT_SWITCH=y
CONFIG_PROFILER_INTERRUPT=y
CONFIG_ADVANCED_POWER_MANAGEMENT=y
CONFIG_TICKLESS_IDLE=n
CONFIG_PROFILER_SLEEP=y

3
samples/microkernel/apps/profiler_sample/src/Makefile
View file

@ -1,3 +0,0 @@
ccflags-y += ${PROJECTINCLUDE} -I${ZEPHYR_BASE}/samples/microkernel/apps/philosophers/src
obj-y = profiler_collector_sample.o ../../../../microkernel/apps/philosophers/src/phil_fiber.o

2
samples/nanokernel/apps/profiler_sample/Makefile → samples/nanokernel/apps/kernel_event_logger_sample/Makefile
View file

@ -1,6 +1,6 @@
KERNEL_TYPE = nano
PLATFORM_CONFIG ?= basic_atom
SOURCE_DIR = $(ZEPHYR_BASE)/samples/microkernel/apps/profiler_sample/src/
SOURCE_DIR = $(ZEPHYR_BASE)/samples/microkernel/apps/kernel_event_logger_sample/src/
MDEF_FILE = prj.mdef
CONF_FILE = prj_$(ARCH).conf

13
samples/nanokernel/apps/profiler_sample/README.txt → samples/nanokernel/apps/kernel_event_logger_sample/README.txt
View file

@ -1,8 +1,11 @@
Title: Profiler Sample
Title: Kernel Event Logger Sample
Description:
A sample that shows how profiler events can be retrieved.
This sample uses the philosopher sample with two additional tasks to show the
profiling data on different system's states. The fork manager task controls the
fork's availibilty. The worker task performs intermitently heavy processing,
allowing or preventing the system to go idle.
--------------------------------------------------------------------------------
@ -26,6 +29,12 @@ or
make pristine # discard results of previous builds
# and restore pre-defined configuration info
Problems with QEMU on ARM:
Qemu v2.1 for ARM platform do not support tickless idle. If run the sample
project in QEMU with the CONFIG_TICKLESS_IDLE option enabled, the project
could present an erratic behaviour.
--------------------------------------------------------------------------------
Sample Output:

24
samples/nanokernel/apps/kernel_event_logger_sample/prj.mdef Normal file
View file

@ -0,0 +1,24 @@
% Application : DiningPhilosophers
% TASKGROUP NAME
% ==============
TASKGROUP PHI
% TASK NAME PRIO ENTRY STACK GROUPS
% ======================================================
TASK k_logger 5 k_event_logger_demo 1024 [EXE]
TASK phi1Task0 6 philEntry 1024 [PHI]
TASK philTask1 6 philEntry 1024 [PHI]
TASK philTask2 6 philEntry 1024 [PHI]
TASK philTask3 6 philEntry 1024 [PHI]
TASK philTask4 6 philEntry 1024 [PHI]
TASK philTask5 6 philEntry 1024 [PHI]
% MUTEX NAME
% ================
MUTEX forkMutex0
MUTEX forkMutex1
MUTEX forkMutex2
MUTEX forkMutex3
MUTEX forkMutex4
MUTEX forkMutex5

6
samples/nanokernel/apps/kernel_event_logger_sample/prj_arc.conf Normal file
View file

@ -0,0 +1,6 @@
CONFIG_COMPILER_OPT="-O0"
CONFIG_NUM_IRQS=43
CONFIG_NANO_TIMEOUTS=y
CONFIG_KERNEL_EVENT_LOGGER=y
CONFIG_KERNEL_EVENT_LOGGER_BUFFER_SIZE=16
CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH=y

6
samples/nanokernel/apps/kernel_event_logger_sample/prj_arm.conf Normal file
View file

@ -0,0 +1,6 @@
CONFIG_COMPILER_OPT="-O0"
CONFIG_NUM_IRQS=43
CONFIG_NANO_TIMEOUTS=y
CONFIG_KERNEL_EVENT_LOGGER=y
CONFIG_KERNEL_EVENT_LOGGER_BUFFER_SIZE=16
CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH=y

6
samples/nanokernel/apps/profiler_sample/prj_x86.conf → samples/nanokernel/apps/kernel_event_logger_sample/prj_x86.conf
View file

@ -1,6 +1,6 @@
# Let stack canaries use non-random number generator.
# This option is NOT to be used in production code.
CONFIG_KERNEL_PROFILER=y
CONFIG_KERNEL_EVENT_LOGGER=y
CONFIG_NANO_TIMEOUTS=y
CONFIG_PROFILER_BUFFER_SIZE=16
CONFIG_PROFILER_CONTEXT_SWITCH=y
CONFIG_KERNEL_EVENT_LOGGER_BUFFER_SIZE=16
CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH=y

24
samples/nanokernel/apps/profiler_sample/prj.mdef
View file

@ -1,24 +0,0 @@
% Application : DiningPhilosophers
% TASKGROUP NAME
% ==============
TASKGROUP PHI
% TASK NAME PRIO ENTRY STACK GROUPS
% ==================================================
TASK profiler 5 profiler_demo 1024 [EXE]
TASK phi1Task0 6 philEntry 1024 [PHI]
TASK philTask1 6 philEntry 1024 [PHI]
TASK philTask2 6 philEntry 1024 [PHI]
TASK philTask3 6 philEntry 1024 [PHI]
TASK philTask4 6 philEntry 1024 [PHI]
TASK philTask5 6 philEntry 1024 [PHI]
% MUTEX NAME
% ================
MUTEX forkMutex0
MUTEX forkMutex1
MUTEX forkMutex2
MUTEX forkMutex3
MUTEX forkMutex4
MUTEX forkMutex5

6
samples/nanokernel/apps/profiler_sample/prj_arc.conf
View file

@ -1,6 +0,0 @@
CONFIG_COMPILER_OPT="-O0"
CONFIG_NUM_IRQS=43
CONFIG_NANO_TIMEOUTS=y
CONFIG_KERNEL_PROFILER=y
CONFIG_PROFILER_BUFFER_SIZE=16
CONFIG_PROFILER_CONTEXT_SWITCH=y

6
samples/nanokernel/apps/profiler_sample/prj_arm.conf
View file

@ -1,6 +0,0 @@
CONFIG_COMPILER_OPT="-O0"
CONFIG_NUM_IRQS=43
CONFIG_NANO_TIMEOUTS=y
CONFIG_KERNEL_PROFILER=y
CONFIG_PROFILER_BUFFER_SIZE=16
CONFIG_PROFILER_CONTEXT_SWITCH=y