Adds a lock around the output to prevent corruption, and sets the buffer
size of the output to size of the output buffer. This fixes the
corrupted log output as process() may be called from multiple contexts
from different CPUs. A background log processing thread may race against
the panic ISR log context also calling process() on an SMP system.
Additionally sets the buffer size to 80 such that the cavs trace_out.c
functionality and lock are useful for more than one character at a time
greatly reducing the chances of garbled output in a printk and log race
but does not entirely prevent it. CONFIG_LOG_PRINTK=y should be used
to avoid all races.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
Adding mechanism to all the backends to switch the logging formats
at runtime while leveraging the function pointer table based upon
the Kconfigs which also cleans up the logging backend design.
Also demonstrate the working API with the changes
to syst sample. Clean up Kconfig for backends and add a standard
template to generate the Kconfigs for logging formats to be used
by all backends.
Signed-off-by: Aastha Grover <aastha.grover@intel.com>
Reduced logging mode selection to deferred, immediate, minimal and
frontend. Decoupled logging version from mode and created CONFIG_LOG1
which can be used to explicitly select deprecated version.
From now on, chosing CONFIG_LOG_MODE_{IMMEDIATE,DEFERRED} will result
in version2.
Deprecated CONFIG_LOG2_MODE_{IMMEDIATE,DEFERRED} with cmake warning.
Codebase adapted to those changes.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This platform had separate backends for the log subsystem and printk
handler, which was silly. Unify them to use the same backend so they
don't clobber each other.
This patch appears to be a lot of lines, but it's really mostly code
motion and renaming.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Ring buffer in memory backend does not depends on xtensa adsp board,
so make it general: remove to log_backend_rb and remove dependency on
up_squared_adsp.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
