When profiler is started from shell, platform information is
transmitted over uart by calling uart_poll_out(uart_dev)
directly in the shell fiber context which is executed when
the command is entered ('prof start')
Problem is that 'uart_dev' global variable is set to the UART
console device when prof_flush() first call is done.
Depending on when this call happens (application dependent,
especially in nano-apps which have to call prof_flush in
their main loop), 'prof start' may happen before 'uart_dev'
variable is actually set, which drives to shell fiber crash.
This patches moves sending platform information from shell
fiber to prof_flush function to avoid using non initialized
'uart_dev' variable.
Change-Id: Ie64f4418a745affa3fbd731db6bf9bb998b7c2f9
Signed-off-by: Fabrice Olivero <fabrice.olivero@intel.com>
On galileo, UART_0 IRQ is incorrectly mapped to IRQ 0
UART_0 IRQ should be mapped to IRQ 17 (same as UART_1 IRQ)
but NS16550 driver doesn't support mapping same IRQ for
different devices.
This is creating crashes when dumping profiler data on UART
CONSOLE (UART_1) with UART console enabled (UART in interrupt
mode)
This patch is disabling UART_0 in sample apps and adding a note
in the README file
This problem appeared due to following commit:
e643cede3a uart: add ISR callback mechanism for UART drivers
Since that commit, UART driver is setting the ISR for all
UART device instances when interrupt mode is enabled
Change-Id: Ic9d0207e5e5c7e3d8e8a8bf90f3132801bc6c2b1
Signed-off-by: Fabrice Olivero <fabrice.olivero@intel.com>
On Quark SE, using system timer as event timestamp creates
inconsistencies since the timer is handled by software in
timer_int_handler and tickless_idle_exit. So timestamp does not
reflect timing of certain events like timer IRQ.
This patch introduces the usage of RTC or AON counter as kernel
event logger timestamp
Change-Id: I070254446dd98dd448e119892c34abf12efca719
Signed-off-by: Fabrice Olivero <fabrice.olivero@intel.com>
This enable checking for errors and automatically print help string:
btshell> connect
connect <address: XX:XX:XX:XX:XX:XX> <address type: (public)>
Change-Id: Ie097ecddb72ab15bf6192e310d0bd839bfd251d5
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This patches includes
- a profiler file/Makefile that can be added to an application to enable
kernel event logger flush over UART
- a nanokernel and a microkernel sample application permitting to
exercise the profiler
- scripts permitting to get kernel event profiler data over UART
console and post-process this data
Origin: Original
Change-Id: Icacf4354c526c7f780b11371e9c28c87e6461eb8
Signed-off-by: Fabrice Olivero <fabrice.olivero@intel.com>
