When generating syscall wrappers, call a tracing macro with the id,
name, and all parameters of the syscall as params when entering and
leaving the syscall. This can be disabled in certain call sites
by defining DISABLE_SYSCALL_TRACING which is useful for certain
tracing implementations which require syscalls themselves to work.
Notably some syscalls *cannot* be automatically traced this way and
headers where exclusions are set are in the gen_syscall.py as notracing.
Includes a systemview and test format implementation.
Tested with systemview, usb, and uart backends with the string
formatter using the tracing sample app.
Debugging the trace wrapper can be aided by setting the TRACE_DIAGNOSTIC
env var and rebuilding from scratch, a warning is issued for every
instance a syscall is traced.
Automatically generating a name mapping for SYSVIEW_Zephyr.txt is a
future item as is documenting how to capture and use the tracing data
generated.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
It was already using uart_irq_callback_user_data_set below, now it also
uses uart_irq_callback_user_data_t as callback type, so let's normalize
the callbacks.
Fixes#26923
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
MISRA-C Rule 5.3 states that identifiers in inner scope should
not hide identifiers in outer scope.
There is a global variable named "dev" to store which UART
device is being used the tracing backend. This name collides
with the parameter of same name in the ISR function. So rename
the global variable.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Tracing subsystem is growing and although related to debugging, it does
deserve to belong into its own subsystem.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Tom Burdick