[PATCH v2] service: extend service function call statistics

[fengchengwen]

Acked-by: Chengwen Feng <fengchengwen at huawei.com>

On 2024/9/10 3:11, Mattias Rönnblom wrote:
> Add two new per-service counters.
> 
> RTE_SERVICE_ATTR_IDLE_CALL_COUNT tracks the number of service function
> invocations where no work was performed.
> 
> RTE_SERVICE_ATTR_ERROR_CALL_COUNT tracks the number invocations
> resulting in an error.
> 
> The semantics of RTE_SERVICE_ATTR_CALL_COUNT remains the same (i.e.,
> counting all invocations, regardless of return value).
> 
> The new statistics may be useful for both debugging and profiling
> (e.g., calculate the average per-call processing latency for non-idle
> service calls).
> 
> Service core tests are extended to cover the new counters, and
> coverage for RTE_SERVICE_ATTR_CALL_COUNT is improved.
> 
> The documentation for the CYCLES attributes are updated to reflect
> their actual semantics.
> 
> Signed-off-by: Mattias Rönnblom <mattias.ronnblom at ericsson.com>
>