For tracing_user, the sys_trace_isr_enter() & sys_trace_isr_exit()
block any nest interrupts & most SMP interrupts for the user. It is
hard to analyze the IRQ preemption(e.g., each IRQ counter and execution
time). This commit adds ISR nest level for each CPU to the user instead
of blocking user call back when nest interrupts.
Signed-off-by: Wealian Liao <WHLIAO@nuvoton.com>
The user tracing backend allows one to implement weak symbols to perform
user specific tracing, e.g gpio toggling or spi transactions. This adds
a qemu sample that just does a simple printk for each of the traced
functions, but could be changed to do whatever function the user
desires.
Signed-off-by: Bradley Bolen <bbolen@lexmark.com>
Add support for new tracing macros in test backend. Move header from
sample into the subsystem and make it available for general testing with
any application.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Instead if printing the line number, output the context (thread,
semaphore, mutex, ..) and the ID of the event where applicable.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
usb_enable() must be called by the application.
The application may want to register usb_dc_status_callback
and trace usb status codes (usb_dc_status_code).
Signed-off-by: Emil Obalski <emil.obalski@nordicsemi.no>
This is more a sample than a test, so put it under samples with the goal
of having dedicated tracing tests in the future under tests.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
